{"id":137944,"date":"2021-03-24T00:00:00","date_gmt":"2021-03-24T00:00:00","guid":{"rendered":"https:\/\/adapty.io\/pt-android-in-app-purchases-google-play-billing-library-part-2\/"},"modified":"2021-03-24T00:00:00","modified_gmt":"2021-03-24T00:00:00","slug":"android-in-app-purchases-google-play-billing-library-part-2","status":"publish","type":"post","link":"https:\/\/adapty.io\/pt\/blog\/android-in-app-purchases-google-play-billing-library-part-2\/","title":{"rendered":"Compras no aplicativo para Android, parte 2: processamento de compras com a Biblioteca Google Play de Faturamento."},"content":{"rendered":"\n<p>No artigo anterior, criamos uma classe de wrapper para trabalhar com a Biblioteca de Faturamento:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"import android.content.Context\nimport com.android.billingclient.api.*\nclass BillingClientWrapper(context: Context) : PurchasesUpdatedListener {\n   interface OnQueryProductsListener {\n       fun onSuccess(products: List&lt;SkuDetails&gt;)\n       fun onFailure(error: Error)\n   }\n   class Error(val responseCode: Int, val debugMessage: String)\n   private val billingClient = BillingClient\n       .newBuilder(context)\n       .enablePendingPurchases()\n       .setListener(this)\n       .build()\n   fun queryProducts(listener: OnQueryProductsListener) {\n       val skusList = listOf(&quot;premium_sub_month&quot;, &quot;premium_sub_year&quot;, &quot;some_inapp&quot;)\n       queryProductsForType(\n           skusList,\n           BillingClient.SkuType.SUBS\n       ) { billingResult, skuDetailsList -&gt;\n           if (billingResult.responseCode == BillingClient.BillingResponseCode.OK) {\n               val products = skuDetailsList ?: mutableListOf()\n               queryProductsForType(\n                   skusList,\n                   BillingClient.SkuType.INAPP\n               ) { billingResult, skuDetailsList -&gt;\n                   if (billingResult.responseCode == BillingClient.BillingResponseCode.OK) {\n                       products.addAll(skuDetailsList ?: listOf())\n                       listener.onSuccess(products)\n                   } else {\n                       listener.onFailure(\n                           Error(billingResult.responseCode, billingResult.debugMessage)\n                       )\n                   }\n               }\n           } else {\n               listener.onFailure(\n                   Error(billingResult.responseCode, billingResult.debugMessage)\n               )\n           }\n       }\n   }\n   private fun queryProductsForType(\n       skusList: List&lt;String&gt;,\n       @BillingClient.SkuType type: String,\n       listener: SkuDetailsResponseListener\n   ) {\n       onConnected {\n           billingClient.querySkuDetailsAsync(\n               SkuDetailsParams.newBuilder().setSkusList(skusList).setType(type).build(),\n               listener\n           )\n       }\n   }\n   private fun onConnected(block: () -&gt; Unit) {\n       billingClient.startConnection(object : BillingClientStateListener {\n           override fun onBillingSetupFinished(billingResult: BillingResult) {\n               block()\n           }\n           override fun onBillingServiceDisconnected() {\n               \/\/ Try to restart the connection on the next request to\n               \/\/ Google Play by calling the startConnection() method.\n           }\n       })\n   }\n   override fun onPurchasesUpdated(billingResult: BillingResult, purchaseList: MutableList&lt;Purchase&gt;?) {\n       \/\/ here come callbacks about new purchases\n   }\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">import<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">android.content.Context<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">import<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">com.android.billingclient.api.*<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">class<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">context<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Context<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB; font-weight: bold\">PurchasesUpdatedListener<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">interface<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">OnQueryProductsListener<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">products<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">List<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">SkuDetails<\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">error<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">class<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">responseCode<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Int<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">debugMessage<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> billingClient <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">context<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">enablePendingPurchases<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">setListener<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">this<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">queryProducts<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">listener<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">OnQueryProductsListener<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> skusList <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">listOf<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">premium_sub_month<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">premium_sub_year<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">some_inapp<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       queryProductsForType<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           skusList<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">SkuType<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">SUBS<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> skuDetailsList <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">BillingResponseCode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OK<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> products <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> skuDetailsList <\/span><span style=\"color: #81A1C1\">?:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">mutableListOf<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               queryProductsForType<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   skusList<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">SkuType<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">INAPP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> skuDetailsList <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">BillingResponseCode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OK<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       products<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">addAll<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">skuDetailsList <\/span><span style=\"color: #81A1C1\">?:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">listOf<\/span><span style=\"color: #ECEFF4\">())<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       listener<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">products<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #ECEFF4\">}<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">else<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       listener<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                           <\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">debugMessage<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">else<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               listener<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">debugMessage<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">queryProductsForType<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #D8DEE9\">skusList<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">List<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">@BillingClient.SkuType<\/span><span style=\"color: #ECEFF4\"> <\/span><span style=\"color: #D8DEE9\">type<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #D8DEE9\">listener<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">SkuDetailsResponseListener<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       onConnected <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">querySkuDetailsAsync<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #8FBCBB\">SkuDetailsParams<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">().<\/span><span style=\"color: #D8DEE9FF\">setSkusList<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">skusList<\/span><span style=\"color: #ECEFF4\">).<\/span><span style=\"color: #D8DEE9FF\">setType<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">type<\/span><span style=\"color: #ECEFF4\">).<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">(),<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               listener<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onConnected<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">block<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Unit<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">startConnection<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">object<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientStateListener<\/span><span style=\"color: #D8DEE9FF\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           override fun onBillingSetupFinished<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingResult<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               block<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           }<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           override fun onBillingServiceDisconnected<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">\/\/<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Try<\/span><span style=\"color: #D8DEE9FF\"> to restart the connection on the next request to<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">\/\/<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Google<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Play<\/span><span style=\"color: #D8DEE9FF\"> by calling the startConnection<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> method<\/span><span style=\"color: #ECEFF4\">.<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           }<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       }<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">override<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onPurchasesUpdated<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">billingResult<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">purchaseList<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">MutableList<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #D8DEE9FF\">?<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #616E88\">\/\/ here come callbacks about new purchases<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Vamos prosseguir com a implementa\u00e7\u00e3o da compra e melhorar nossa classe.<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\" id=\"como-criar-uma-tela-de-assinatura\">Como criar uma tela de assinatura<\/h2>\n\n\n\n<p>Qualquer aplicativo que apresente compras no aplicativo tem uma tela de paywall. Existem <a href=\"https:\/\/support.google.com\/googleplay\/android-developer\/answer\/9900533\" target=\"_blank\" rel=\"noopener nofollow\">pol\u00edticas do Google<\/a> que definem o n\u00famero m\u00ednimo de elementos e textos instrucionais que devem estar presentes nas telas. Segue um resumo. Na tela do paywall, \u00e9 necess\u00e1rio ser expl\u00edcito sobre as condi\u00e7\u00f5es de assinatura, custos e dura\u00e7\u00e3o, assim como especificar se a assinatura \u00e9 necess\u00e1ria para utilizar o aplicativo (app). Deve-se tamb\u00e9m evitar for\u00e7ar seus usu\u00e1rios a realizar qualquer a\u00e7\u00e3o adicional para rever as condi\u00e7\u00f5es.&nbsp;<\/p>\n\n\n\n<p>Vamos usar como exemplo uma tela de paywall simplificada:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/adapty.io\/wp-content\/uploads\/2023\/01\/631abc67c79cf6614ff8de49_3321.png\" alt=\"\" width=\"240\" height=\"506\"><figcaption class=\"wp-element-caption\"><em>Exemplo de paywall no Android<\/em><\/figcaption><\/figure><\/div>\n\n\n<p>\u200dTemos os seguintes elementos na tela do paywall:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Um cabe\u00e7alho.<\/li>\n\n\n\n<li>Bot\u00f5es definidos para iniciar o processo de compra. Estes bot\u00f5es orientam o usu\u00e1rio sobre os detalhes gerais das op\u00e7\u00f5es de assinatura, como o t\u00edtulo e os custos, que s\u00e3o exibidas na moeda local.<\/li>\n\n\n\n<li>Texto de instru\u00e7\u00e3o.&nbsp;<\/li>\n\n\n\n<li>Um bot\u00e3o para restaurar a compra feita anteriormente. Este elemento \u00e9 obrigat\u00f3rio para qualquer aplicativo que apresente assinaturas ou compras n\u00e3o consum\u00edveis.<\/li>\n<\/ul>\n\n\n\n<p>Ajuste do c\u00f3digo para exibir as informa\u00e7\u00f5es do produto<\/p>\n\n\n\n<p>H\u00e1 quatro produtos no nosso exemplo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Duas assinaturas com renova\u00e7\u00e3o autom\u00e1tica (\u201cpremium_sub_month\u201d e \u201cpremium_sub_year\u201d);<\/li>\n\n\n\n<li>Um produto que n\u00e3o pode ser comprado duas vezes ou um produto n\u00e3o consum\u00edvel (\u201cunlock_feature\u201d);<\/li>\n\n\n\n<li>Um produto que pode ser comprado v\u00e1rias vezes ou um produto consum\u00edvel (\u201ccoin_pack_large\u201d).<\/li>\n<\/ul>\n\n\n\n<p>Para simplificar o exemplo, usaremos uma Atividade que iremos injetar com o BillingClientWrapper criado no artigo anterior, assim como um layout com um n\u00famero fixo de bot\u00f5es de compra.<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"class PaywallActivity: BaseActivity() {\n\n   @Inject\n   lateinit var billingClientWrapper: BillingClientWrapper\n\n   override fun onCreate(savedInstanceState: Bundle?) {\n       super.onCreate(savedInstanceState)\n       setContentView(R.layout.activity_paywall)\n\n       displayProducts() \/\/to be declared below\n   }\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">class<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">PaywallActivity<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB; font-weight: bold\">BaseActivity<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">@Inject<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   lateinit <\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> billingClientWrapper<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">override<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onCreate<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">savedInstanceState<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Bundle?<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">super<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onCreate<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">savedInstanceState<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       setContentView<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #8FBCBB\">R<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">layout<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">activity_paywall<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       displayProducts<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #616E88\">\/\/to be declared below<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Por comodidade, vamos adicionar um mapa onde a chave \u00e9 o <a href=\"https:\/\/developer.android.com\/reference\/com\/android\/billingclient\/api\/SkuDetails#getSku()\" target=\"_blank\" rel=\"noopener nofollow\">sku<\/a> do produto, e o valor \u00e9 o bot\u00e3o correspondente na tela.<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"private val purchaseButtonsMap: Map&lt;String, Button&gt; by lazy(LazyThreadSafetyMode.NONE) {\n   mapOf(\n       &quot;premium_sub_month&quot; to monthlySubButton,\n       &quot;premium_sub_year&quot; to yearlySubButton,\n       &quot;coin_pack_large&quot; to coinPackLargeButton,\n       &quot;unlock_feature&quot; to unlockFeatureButton,\n   )\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> purchaseButtonsMap<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Map<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Button<\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #D8DEE9FF\"> by lazy<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #8FBCBB\">LazyThreadSafetyMode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">NONE<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #88C0D0\">mapOf<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">premium_sub_month<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #D8DEE9FF\"> to monthlySubButton<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">premium_sub_year<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #D8DEE9FF\"> to yearlySubButton<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">coin_pack_large<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #D8DEE9FF\"> to coinPackLargeButton<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">unlock_feature<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #D8DEE9FF\"> to unlockFeatureButton<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Vamos declarar um m\u00e9todo para exibir os produtos na IU. Ele ser\u00e1 baseado na l\u00f3gica introduzida em nosso tutorial <a href=\"https:\/\/adapty.io\/blog\/android-in-app-subscriptions-part-1\" target=\"_blank\" rel=\"noopener\">anterior<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"private fun displayProducts() {\n   billingClientWrapper.queryProducts(object : BillingClientWrapper.OnQueryProductsListener {\n       override fun onSuccess(products: List&lt;SkuDetails&gt;&gt;) {\n           products.forEach { product -&gt;\n               purchaseButtonsMap[product.sku]?.apply {\n                   text = &quot;${product.description} for ${product.price}&quot;\n                   setOnClickListener {\n                       billingClientWrapper.purchase(this@PaywallActivity, product) \/\/will be declared below\n                   }\n               }\n           }\n       }\n\n       override fun onFailure(error: BillingClientWrapper.Error) {\n           \/\/handle error\n       }\n   })\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">displayProducts<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   billingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">queryProducts<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">object<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OnQueryProductsListener<\/span><span style=\"color: #D8DEE9FF\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       override fun onSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">products<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">List<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">SkuDetails<\/span><span style=\"color: #81A1C1\">&gt;&gt;<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           products<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">forEach { product <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               purchaseButtonsMap[product<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">sku]<\/span><span style=\"color: #ECEFF4\">?.<\/span><span style=\"color: #D8DEE9FF\">apply {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   text <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&quot;${<\/span><span style=\"color: #A3BE8C\">product<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #A3BE8C\">description<\/span><span style=\"color: #ECEFF4\">}<\/span><span style=\"color: #A3BE8C\"> for <\/span><span style=\"color: #ECEFF4\">${<\/span><span style=\"color: #A3BE8C\">product<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #A3BE8C\">price<\/span><span style=\"color: #ECEFF4\">}&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   setOnClickListener <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       billingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">this@PaywallActivity,<\/span><span style=\"color: #ECEFF4\"> <\/span><span style=\"color: #D8DEE9FF\">product<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #616E88\">\/\/will be declared below<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               }<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           }<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">override<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">error<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #616E88\">\/\/handle error<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   }<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>product.price \u00e9 uma sequ\u00eancia j\u00e1 formatada que especifica a moeda local para a conta. n\u00e3o precisa de nenhuma formata\u00e7\u00e3o adicional. Todas as outras propriedades do objeto da classe <a href=\"https:\/\/developer.android.com\/reference\/com\/android\/billingclient\/api\/SkuDetails\" target=\"_blank\" rel=\"noopener nofollow\">SkuDetails<\/a> tamb\u00e9m s\u00e3o totalmente localizadas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"como-iniciar-o-processo-de-compra\">Como iniciar o processo de compra<\/h2>\n\n\n\n<p>Para processar a compra, temos que usar o m\u00e9todo <a href=\"https:\/\/developer.android.com\/reference\/com\/android\/billingclient\/api\/BillingClient#launchBillingFlow(android.app.Activity,%20com.android.billingclient.api.BillingFlowParams)\" target=\"_blank\" rel=\"noopener nofollow\">launchBillingFlow()<\/a> do thread principal do aplicativo.<\/p>\n\n\n\n<p>Para isso, vamos adicionar um m\u00e9todo de compra() ao BillingClientWrapper.&nbsp;<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"fun purchase(activity: Activity, product: SkuDetails) {\n   onConnected {\n       activity.runOnUiThread {\n           billingClient.launchBillingFlow(\n               activity,\n               BillingFlowParams.newBuilder().setSkuDetails(product).build()\n           )\n       }\n   }\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">purchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">activity<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Activity<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">product<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">SkuDetails<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   onConnected <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       activity<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">runOnUiThread <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">launchBillingFlow<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               activity<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #8FBCBB\">BillingFlowParams<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">().<\/span><span style=\"color: #D8DEE9FF\">setSkuDetails<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">product<\/span><span style=\"color: #ECEFF4\">).<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>O m\u00e9todo launchBillingFlow() n\u00e3o tem retorno de chamada. A resposta retornar\u00e1 ao m\u00e9todo onPurchasesUpdated(). Voc\u00ea se lembra que citamos isso <a href=\"https:\/\/adapty.io\/blog\/android-in-app-subscriptions-part-1\" target=\"_blank\" rel=\"noopener\">no artigo anterior<\/a> e pedimos guardar a informa\u00e7\u00e3o para mais tarde? Bem, vamos precisar dela agora.<\/p>\n\n\n\n<p>O m\u00e9todo onPurchasesUpdated() \u00e9 chamado sempre que houver algum resultado fora da intera\u00e7\u00e3o do usu\u00e1rio com o di\u00e1logo de compra. Pode ser uma compra realizada com sucesso ou um cancelamento de compra causado pelo fechamento da caixa de di\u00e1logo por parte do usu\u00e1rio, neste caso obteremos o c\u00f3digo <a href=\"https:\/\/developer.android.com\/reference\/com\/android\/billingclient\/api\/BillingClient.BillingResponseCode#USER_CANCELED\" target=\"_blank\" rel=\"noopener nofollow\">BillingResponseCode.<em>USER_CANCELED<\/em><\/a>. Outra possibilidade pode ser qualquer uma das outras mensagens de erro poss\u00edveis.<\/p>\n\n\n\n<p>De forma semelhante \u00e0 interface OnQueryProductsListener mencionada no artigo anterior, vamos citar uma interface OnPurchaseListener na classe BillingClientWrapper. Atrav\u00e9s dessa interface, receberemos a compra (um objeto da classe <a href=\"https:\/\/developer.android.com\/reference\/com\/android\/billingclient\/api\/Purchase\" target=\"_blank\" rel=\"noopener nofollow\">Compra<\/a> ou uma mensagem de erro declarada por n\u00f3s <a href=\"https:\/\/adapty.io\/blog\/android-in-app-subscriptions\" target=\"_blank\" rel=\"noopener\">no guia anterior<\/a>. No pr\u00f3ximo artigo, discutiremos o caso em que o objeto da classe \u201cCompra\u201d pode ser nulo, mesmo que a compra tenha sido realizada com sucesso.<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"interface OnPurchaseListener {\n   fun onPurchaseSuccess(purchase: Purchase?)\n   fun onPurchaseFailure(error: Error)\n}\n\nvar onPurchaseListener: OnPurchaseListener? = null\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">interface<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">OnPurchaseListener<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onPurchaseSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">purchase<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase?<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onPurchaseFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">error<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> onPurchaseListener<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">OnPurchaseListener?<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">null<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>A seguir, vamos implement\u00e1-la no PaywallActivity:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"class PaywallActivity: BaseActivity(), BillingClientWrapper.OnPurchaseListener {\n\n   @Inject\n   lateinit var billingClientWrapper: BillingClientWrapper\n\n   private val purchaseButtonsMap: Map&lt;String, Button&gt; by lazy(LazyThreadSafetyMode.NONE) {\n       mapOf(\n           &quot;premium_sub_month&quot; to monthlySubButton,\n           &quot;premium_sub_year&quot; to yearlySubButton,\n           &quot;coin_pack_large&quot; to coinPackLargeButton,\n           &quot;unlock_feature&quot; to unlockFeatureButton,\n       )\n   }\n\n   override fun onCreate(savedInstanceState: Bundle?) {\n       super.onCreate(savedInstanceState)\n       setContentView(R.layout.activity_paywall)\n\n       billingClientWrapper.onPurchaseListener = this\n\n       displayProducts()\n   }\n\n   override fun onPurchaseSuccess(purchase: Purchase?) {\n       \/\/handle successful purchase\n   }\n\n   override fun onPurchaseFailure(error: BillingClientWrapper.Error) {\n       \/\/handle error or user cancelation\n   }\n\n   private fun displayProducts() {\n       billingClientWrapper.queryProducts(object : BillingClientWrapper.OnQueryProductsListener {\n           override fun onSuccess(products: List&lt;SkuDetails&gt;) {\n               products.forEach { product -&gt;\n                   purchaseButtonsMap[product.sku]?.apply {\n                       text = &quot;${product.description} for ${product.price}&quot;\n                       setOnClickListener {\n                           billingClientWrapper.purchase(this@PaywallActivity, product)\n                       }\n                   }\n               }\n           }\n\n           override fun onFailure(error: BillingClientWrapper.Error) {\n               \/\/handle error\n           }\n       })\n   }\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">class<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">PaywallActivity<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB; font-weight: bold\">BaseActivity<\/span><span style=\"color: #ECEFF4\">(),<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OnPurchaseListener<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">@Inject<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   lateinit <\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> billingClientWrapper<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> purchaseButtonsMap<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Map<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Button<\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #D8DEE9FF\"> by lazy<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #8FBCBB\">LazyThreadSafetyMode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">NONE<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #88C0D0\">mapOf<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">premium_sub_month<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #D8DEE9FF\"> to monthlySubButton<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">premium_sub_year<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #D8DEE9FF\"> to yearlySubButton<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">coin_pack_large<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #D8DEE9FF\"> to coinPackLargeButton<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">unlock_feature<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #D8DEE9FF\"> to unlockFeatureButton<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">override<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onCreate<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">savedInstanceState<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Bundle?<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">super<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onCreate<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">savedInstanceState<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       setContentView<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #8FBCBB\">R<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">layout<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">activity_paywall<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       billingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onPurchaseListener <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">this<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       displayProducts<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">override<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onPurchaseSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">purchase<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase?<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #616E88\">\/\/handle successful purchase<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">override<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onPurchaseFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">error<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #616E88\">\/\/handle error or user cancelation<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">displayProducts<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       billingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">queryProducts<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">object<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OnQueryProductsListener<\/span><span style=\"color: #D8DEE9FF\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           override fun onSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">products<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">List<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">SkuDetails<\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               products<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">forEach { product <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   purchaseButtonsMap[product<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">sku]<\/span><span style=\"color: #ECEFF4\">?.<\/span><span style=\"color: #D8DEE9FF\">apply {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       text <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&quot;${<\/span><span style=\"color: #A3BE8C\">product<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #A3BE8C\">description<\/span><span style=\"color: #ECEFF4\">}<\/span><span style=\"color: #A3BE8C\"> for <\/span><span style=\"color: #ECEFF4\">${<\/span><span style=\"color: #A3BE8C\">product<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #A3BE8C\">price<\/span><span style=\"color: #ECEFF4\">}&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       setOnClickListener <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                           billingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">this@PaywallActivity,<\/span><span style=\"color: #ECEFF4\"> <\/span><span style=\"color: #D8DEE9FF\">product<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   }<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               }<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #81A1C1\">override<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">error<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #616E88\">\/\/handle error<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       }<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Vamos adicionar alguma l\u00f3gica ao onPurchaseUpdated():<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"override fun onPurchasesUpdated(\n   billingResult: BillingResult,\n   purchaseList: MutableList&lt;Purchase&gt;?\n) {\n   when (billingResult.responseCode) {\n       BillingClient.BillingResponseCode.OK -&gt; {\n           if (purchaseList == null) {\n               \/\/to be discussed in the next article\n               onPurchaseListener?.onPurchaseSuccess(null)\n               return\n           }\n\n           purchaseList.forEach(::processPurchase) \/\/to be declared below\n       }\n       else -&gt; {\n           \/\/error occured or user canceled\n           onPurchaseListener?.onPurchaseFailure(\n               BillingClientWrapper.Error(\n                   billingResult.responseCode,\n                   billingResult.debugMessage\n               )\n           )\n       }\n   }\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">override<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onPurchasesUpdated<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #D8DEE9\">billingResult<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #D8DEE9\">purchaseList<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">MutableList<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #D8DEE9FF\">?<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">when<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">BillingResponseCode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OK<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchaseList <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">null<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #616E88\">\/\/to be discussed in the next article<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               on<\/span><span style=\"color: #8FBCBB\">PurchaseListener?<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onPurchaseSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">null<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">return<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           purchaseList<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">forEach<\/span><span style=\"color: #ECEFF4\">(::<\/span><span style=\"color: #D8DEE9FF\">processPurchase<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #616E88\">\/\/to be declared below<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">else<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #616E88\">\/\/error occured or user canceled<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           on<\/span><span style=\"color: #8FBCBB\">PurchaseListener?<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onPurchaseFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">debugMessage<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Caso a purchaseList n\u00e3o esteja vazia, primeiro teremos que escolher os itens cuja purchaseState \u00e9 igual a <a href=\"https:\/\/developer.android.com\/google\/play\/billing\/integrate#pending\" target=\"_blank\" rel=\"noopener nofollow\">PurchaseState.PURCHASED<\/a>, \u00e1 que tamb\u00e9m existem compras <a href=\"https:\/\/developer.android.com\/google\/play\/billing\/integrate#pending\" target=\"_blank\" rel=\"noopener nofollow\">pendentes<\/a>. Se for esse o caso, o fluxo de usu\u00e1rios termina aqui. De acordo com os <a href=\"https:\/\/developer.android.com\/google\/play\/billing\/integrate#process\" target=\"_blank\" rel=\"noopener nofollow\">documentos<\/a>, devemos verificar a compra no nosso servidor. Abordaremos este assunto nos pr\u00f3ximos artigos desta s\u00e9rie. Assim que for conclu\u00edda a verifica\u00e7\u00e3o do servidor, voc\u00ea deve entregar o conte\u00fado e informar o Google. Caso isso n\u00e3o seja feito, a compra ser\u00e1 automaticamente reembolsada em tr\u00eas dias. \u00c9 bastante interessante que esta pol\u00edtica seja exclusiva do Google Play. O iOS n\u00e3o imp\u00f5e nenhuma pol\u00edtica semelhante. Voc\u00ea tem duas maneiras de reconhecer a entrega de seu conte\u00fado ao usu\u00e1rio:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Atrav\u00e9s do <a href=\"https:\/\/developer.android.com\/reference\/com\/android\/billingclient\/api\/BillingClient#acknowledgepurchase\" target=\"_blank\" rel=\"noopener nofollow\">acknowledgePurchase()<\/a> no lado do cliente;<\/li>\n\n\n\n<li>Atrav\u00e9s do <a href=\"https:\/\/developers.google.com\/android-publisher\/api-ref\/purchases\/products\/acknowledge\" target=\"_blank\" rel=\"noopener nofollow\">Product.Purchases.Acknowledge<\/a>\/<a href=\"https:\/\/developers.google.com\/android-publisher\/api-ref\/purchases\/subscriptions\/acknowledge\" target=\"_blank\" rel=\"noopener nofollow\">Purchases.Subscriptions.Acknowledge<\/a> no lado do sistema backend.<\/li>\n<\/ul>\n\n\n\n<p>Quando se trata de um produto consum\u00edvel, temos que usar o m\u00e9todo <a href=\"https:\/\/developer.android.com\/reference\/com\/android\/billingclient\/api\/BillingClient#consumeasync\" target=\"_blank\" rel=\"noopener nofollow\">consumeAsync()<\/a>. Ele reconhece a compra em detalhes, ao mesmo tempo em que torna poss\u00edvel refazer a compra do produto. Isto s\u00f3 pode ser feito com a Biblioteca de Faturamento. Por alguma raz\u00e3o, a API do Google Play Developer n\u00e3o oferece nenhuma maneira de fazer isso no sistema backend. \u00c9 bastante curioso que, ao contr\u00e1rio do Google Play, o App Store e o AppGallery configurem o produto como consum\u00edvel via App Store Connect e AppGallery Connect, respectivamente. No entanto, tais produtos no AppGallery tamb\u00e9m devem ser consumidos de forma expl\u00edcita.<\/p>\n\n\n\n\n\n<p>Vamos escrever os m\u00e9todos de reconhecimento e consumo, assim como duas vers\u00f5es do m\u00e9todo ProcessPurchase() para contabilizar se estamos ou n\u00e3o executando nosso pr\u00f3prio sistema backend.<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"private fun acknowledgePurchase(\n   purchase: Purchase,\n   callback: AcknowledgePurchaseResponseListener\n) {\n   onConnected {\n       billingClient.acknowledgePurchase(\n           AcknowledgePurchaseParams.newBuilder().setPurchaseToken(purchase.purchaseToken)\n               .build(),\n           callback::onAcknowledgePurchaseResponse\n       )\n   }\n}\n\nprivate fun consumePurchase(purchase: Purchase, callback: ConsumeResponseListener) {\n   onConnected {\n       billingClient.consumeAsync(\n           ConsumeParams.newBuilder().setPurchaseToken(purchase.purchaseToken).build()\n       ) { billingResult, purchaseToken -&gt;\n           callback.onConsumeResponse(billingResult, purchaseToken)\n       }\n   }\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">acknowledgePurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #D8DEE9\">purchase<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #D8DEE9\">callback<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">AcknowledgePurchaseResponseListener<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   onConnected <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">acknowledgePurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #8FBCBB\">AcknowledgePurchaseParams<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">().<\/span><span style=\"color: #D8DEE9FF\">setPurchaseToken<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseToken<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">(),<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #D8DEE9\">callback<\/span><span style=\"color: #ECEFF4\">::<\/span><span style=\"color: #D8DEE9FF\">onAcknowledgePurchaseResponse<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">consumePurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">purchase<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">callback<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">ConsumeResponseListener<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   onConnected <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">consumeAsync<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #8FBCBB\">ConsumeParams<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">().<\/span><span style=\"color: #D8DEE9FF\">setPurchaseToken<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseToken<\/span><span style=\"color: #ECEFF4\">).<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> purchaseToken <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           callback<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onConsumeResponse<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> purchaseToken<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Sem verifica\u00e7\u00e3o do servidor:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"private fun processPurchase(purchase: Purchase) {\n   if (purchase.purchaseState == Purchase.PurchaseState.PURCHASED) {\n       onPurchaseListener?.onPurchaseSuccess(purchase)\n\n       if (purchase.skus.firstOrNull() == &quot;coin_pack_large&quot;) {\n           \/\/consuming our only consumable product\n           consumePurchase(purchase) { billingResult, purchaseToken -&gt;\n               if (billingResult.responseCode != BillingClient.BillingResponseCode.OK) {\n                   \/\/implement retry logic or try to consume again in onResume()\n               }\n           }\n       } else if (!purchase.isAcknowledged) {\n           acknowledgePurchase(purchase) { billingResult -&gt;\n               if (billingResult.responseCode != BillingClient.BillingResponseCode.OK) {\n                   \/\/implement retry logic or try to acknowledge again in onResume()\n               }\n           }\n       }\n   }\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">processPurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">purchase<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseState <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">PurchaseState<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">PURCHASED<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       on<\/span><span style=\"color: #8FBCBB\">PurchaseListener?<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onPurchaseSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">skus<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">firstOrNull<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">coin_pack_large<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #616E88\">\/\/consuming our only consumable product<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           consumePurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> purchaseToken <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode <\/span><span style=\"color: #81A1C1\">!=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">BillingResponseCode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OK<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #616E88\">\/\/implement retry logic or try to consume again in onResume()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">else<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">!<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">isAcknowledged<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           acknowledgePurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> billingResult <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode <\/span><span style=\"color: #81A1C1\">!=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">BillingResponseCode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OK<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #616E88\">\/\/implement retry logic or try to acknowledge again in onResume()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Com verifica\u00e7\u00e3o do servidor:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"private fun processPurchase(purchase: Purchase) {\n   if (purchase.purchaseState == Purchase.PurchaseState.PURCHASED) {\n       api.verifyPurchase(purchase.purchaseToken) { error -&gt;\n           if (error != null) {\n               onPurchaseListener?.onPurchaseSuccess(purchase)\n\n               if (purchase.skus.firstOrNull() == &quot;coin_pack_large&quot;) {\n                   \/\/consuming our only consumable product\n                   billingClient.consumeAsync(\n                       ConsumeParams.newBuilder().setPurchaseToken(purchase.purchaseToken)\n                           .build()\n                   ) { billingResult, purchaseToken -&gt;\n                       if (billingResult.responseCode != BillingClient.BillingResponseCode.OK) {\n                           \/\/implement retry logic or try to consume again in onResume()\n                       }\n                   }\n               }\n           } else {\n               \/\/handle verification error\n           }\n       }\n   }\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">processPurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">purchase<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseState <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">PurchaseState<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">PURCHASED<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       api<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">verifyPurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseToken<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> error <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">error <\/span><span style=\"color: #81A1C1\">!=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">null<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               on<\/span><span style=\"color: #8FBCBB\">PurchaseListener?<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onPurchaseSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">skus<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">firstOrNull<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">coin_pack_large<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #616E88\">\/\/consuming our only consumable product<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">consumeAsync<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       <\/span><span style=\"color: #8FBCBB\">ConsumeParams<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">().<\/span><span style=\"color: #D8DEE9FF\">setPurchaseToken<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseToken<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                           <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> purchaseToken <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode <\/span><span style=\"color: #81A1C1\">!=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">BillingResponseCode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OK<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                           <\/span><span style=\"color: #616E88\">\/\/implement retry logic or try to consume again in onResume()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">else<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #616E88\">\/\/handle verification error<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Nos pr\u00f3ximos artigos, vamos tratar da verifica\u00e7\u00e3o do servidor para compras de forma mais detalhada.<\/p>\n\n\n\n<p>Naturalmente, podemos tamb\u00e9m implementar o reconhecimento no segundo exemplo do lado do cliente. No entanto, caso voc\u00ea possa fazer algo no sistema backend, fa\u00e7a. Caso o reconhecimento ou o processo de consumo gere algum erro, ele n\u00e3o poder\u00e1 ser ignorado. Caso nenhum deles seja executado no prazo de 3 dias ap\u00f3s a compra ter recebido o status <a href=\"https:\/\/developer.android.com\/reference\/com\/android\/billingclient\/api\/Purchase.PurchaseState#PURCHASED\" target=\"_blank\" rel=\"noopener nofollow\">PurchaseState.<em>PURCHASED<\/em><\/a>, ele ser\u00e1 cancelado e reembolsado. Portanto, se for imposs\u00edvel fazer no sistema backend e voc\u00ea continuar recebendo o erro ap\u00f3s uma s\u00e9rie de tentativas, existe uma solu\u00e7\u00e3o confi\u00e1vel. Voc\u00ea vai ter que obter as compras atuais do usu\u00e1rio atrav\u00e9s de algum m\u00e9todo de ciclo de vida, como <a href=\"https:\/\/developer.android.com\/reference\/androidx\/lifecycle\/Lifecycle.Event\" target=\"_blank\" rel=\"noopener nofollow\">onStart() ou onResume()<\/a>, e continuar tentando, esperando que o usu\u00e1rio abra o aplicativo no prazo de 3 dias durante sua conex\u00e3o com a Internet. \ud83d\ude42<\/p>\n\n\n\n<p>Portanto, a vers\u00e3o atual da classe BillingClientWrapper ser\u00e1 assim:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"\" style=\"font-size:.875rem;line-height:1.25rem\"><span role=\"button\" tabindex=\"0\" data-code=\"import android.app.Activity\nimport android.content.Context\nimport com.android.billingclient.api.*\n\nclass BillingClientWrapper(context: Context, private val api: Api) : PurchasesUpdatedListener {\n\n   interface OnQueryProductsListener {\n       fun onSuccess(products: List&lt;SkuDetails&gt;)\n       fun onFailure(error: Error)\n   }\n\n   interface OnPurchaseListener {\n       fun onPurchaseSuccess(purchase: Purchase?)\n       fun onPurchaseFailure(error: Error)\n   }\n\n   var onPurchaseListener: OnPurchaseListener? = null\n\n   class Error(val responseCode: Int, val debugMessage: String)\n\n   private val billingClient = BillingClient\n       .newBuilder(context)\n       .enablePendingPurchases()\n       .setListener(this)\n       .build()\n\n   fun purchase(activity: Activity, product: SkuDetails) {\n       onConnected {\n           activity.runOnUiThread {\n               billingClient.launchBillingFlow(\n                   activity,\n                   BillingFlowParams.newBuilder().setSkuDetails(product).build()\n               )\n           }\n       }\n   }\n\n   fun queryProducts(listener: OnQueryProductsListener) {\n       val skusList = listOf(&quot;premium_sub_month&quot;, &quot;premium_sub_year&quot;, &quot;coin_pack_large&quot;, &quot;unlock_feature&quot;)\n\n       queryProductsForType(\n           skusList,\n           BillingClient.SkuType.SUBS\n       ) { billingResult, skuDetailsList -&gt;\n           if (billingResult.responseCode == BillingClient.BillingResponseCode.OK) {\n               val products = skuDetailsList ?: mutableListOf()\n               queryProductsForType(\n                   skusList,\n                   BillingClient.SkuType.INAPP\n               ) { billingResult, skuDetailsList -&gt;\n                   if (billingResult.responseCode == BillingClient.BillingResponseCode.OK) {\n                       products.addAll(skuDetailsList ?: listOf())\n                       listener.onSuccess(products)\n                   } else {\n                       listener.onFailure(\n                           Error(billingResult.responseCode, billingResult.debugMessage)\n                       )\n                   }\n               }\n           } else {\n               listener.onFailure(\n                   Error(billingResult.responseCode, billingResult.debugMessage)\n               )\n           }\n       }\n   }\n\n   private fun queryProductsForType(\n       skusList: List&lt;String&gt;,\n       @BillingClient.SkuType type: String,\n       listener: SkuDetailsResponseListener\n   ) {\n       onConnected {\n           billingClient.querySkuDetailsAsync(\n               SkuDetailsParams.newBuilder().setSkusList(skusList).setType(type).build(),\n               listener\n           )\n       }\n   }\n\n   private fun onConnected(block: () -&gt; Unit) {\n       billingClient.startConnection(object : BillingClientStateListener {\n           override fun onBillingSetupFinished(billingResult: BillingResult) {\n               block()\n           }\n\n           override fun onBillingServiceDisconnected() {\n               \/\/ Try to restart the connection on the next request to\n               \/\/ Google Play by calling the startConnection() method.\n           }\n       })\n   }\n\n   override fun onPurchasesUpdated(\n       billingResult: BillingResult,\n       purchaseList: MutableList&lt;Purchase&gt;?\n   ) {\n       when (billingResult.responseCode) {\n           BillingClient.BillingResponseCode.OK -&gt; {\n               if (purchaseList == null) {\n                   \/\/to be discussed in the next article\n                   onPurchaseListener?.onPurchaseSuccess(null)\n                   return\n               }\n\n               purchaseList.forEach(::processPurchase)\n           }\n           else -&gt; {\n               \/\/error occured or user canceled\n               onPurchaseListener?.onPurchaseFailure(\n                   BillingClientWrapper.Error(\n                       billingResult.responseCode,\n                       billingResult.debugMessage\n                   )\n               )\n           }\n       }\n   }\n\n   private fun processPurchase(purchase: Purchase) {\n       if (purchase.purchaseState == Purchase.PurchaseState.PURCHASED) {\n           api.verifyPurchase(purchase.purchaseToken) { error -&gt;\n               if (error != null) {\n                   onPurchaseListener?.onPurchaseSuccess(purchase)\n\n                   if (purchase.skus.firstOrNull() == &quot;coin_pack_large&quot;) {\n                       \/\/consuming our only consumable product\n                       billingClient.consumeAsync(\n                           ConsumeParams.newBuilder().setPurchaseToken(purchase.purchaseToken)\n                               .build()\n                       ) { billingResult, purchaseToken -&gt;\n                           if (billingResult.responseCode != BillingClient.BillingResponseCode.OK) {\n                               \/\/implement retry logic or try to consume again in onResume()\n                           }\n                       }\n                   }\n               } else {\n                   \/\/handle verification error\n               }\n           }\n       }\n   }\n\n   private fun acknowledgePurchase(\n       purchase: Purchase,\n       callback: AcknowledgePurchaseResponseListener\n   ) {\n       onConnected {\n           billingClient.acknowledgePurchase(\n               AcknowledgePurchaseParams.newBuilder().setPurchaseToken(purchase.purchaseToken)\n                   .build(),\n               callback::onAcknowledgePurchaseResponse\n           )\n       }\n   }\n\n   private fun consumePurchase(purchase: Purchase, callback: ConsumeResponseListener) {\n       onConnected {\n           billingClient.consumeAsync(\n               ConsumeParams.newBuilder().setPurchaseToken(purchase.purchaseToken).build()\n           ) { billingResult, purchaseToken -&gt;\n               callback.onConsumeResponse(billingResult, purchaseToken)\n           }\n       }\n   }\n}\" style=\"color:#d8dee9ff;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki nord\" style=\"background-color: #2e3440ff\"><code><span class=\"line\"><span style=\"color: #81A1C1\">import<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">android.app.Activity<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">import<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">android.content.Context<\/span><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">import<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">com.android.billingclient.api.*<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #81A1C1\">class<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">context<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Context<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">api<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Api<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB; font-weight: bold\">PurchasesUpdatedListener<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">interface<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">OnQueryProductsListener<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">products<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">List<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">SkuDetails<\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">error<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">interface<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">OnPurchaseListener<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onPurchaseSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">purchase<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase?<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onPurchaseFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">error<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">var<\/span><span style=\"color: #D8DEE9FF\"> onPurchaseListener<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">OnPurchaseListener?<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">null<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">class<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">responseCode<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Int<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">debugMessage<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> billingClient <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">context<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">enablePendingPurchases<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">setListener<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">this<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">purchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">activity<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Activity<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">product<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">SkuDetails<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       onConnected <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           activity<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">runOnUiThread <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">launchBillingFlow<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   activity<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #8FBCBB\">BillingFlowParams<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">().<\/span><span style=\"color: #D8DEE9FF\">setSkuDetails<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">product<\/span><span style=\"color: #ECEFF4\">).<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">queryProducts<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">listener<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">OnQueryProductsListener<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> skusList <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">listOf<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">premium_sub_month<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">premium_sub_year<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">coin_pack_large<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">unlock_feature<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       queryProductsForType<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           skusList<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">SkuType<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">SUBS<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> skuDetailsList <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">BillingResponseCode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OK<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">val<\/span><span style=\"color: #D8DEE9FF\"> products <\/span><span style=\"color: #81A1C1\">=<\/span><span style=\"color: #D8DEE9FF\"> skuDetailsList <\/span><span style=\"color: #81A1C1\">?:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">mutableListOf<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               queryProductsForType<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   skusList<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">SkuType<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">INAPP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> skuDetailsList <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">BillingResponseCode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OK<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       products<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">addAll<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">skuDetailsList <\/span><span style=\"color: #81A1C1\">?:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">listOf<\/span><span style=\"color: #ECEFF4\">())<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       listener<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">products<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #ECEFF4\">}<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">else<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       listener<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                           <\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">debugMessage<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">else<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               listener<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">debugMessage<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">queryProductsForType<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #D8DEE9\">skusList<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">List<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">@BillingClient.SkuType<\/span><span style=\"color: #ECEFF4\"> <\/span><span style=\"color: #D8DEE9\">type<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">String<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #D8DEE9\">listener<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">SkuDetailsResponseListener<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       onConnected <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">querySkuDetailsAsync<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #8FBCBB\">SkuDetailsParams<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">().<\/span><span style=\"color: #D8DEE9FF\">setSkusList<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">skusList<\/span><span style=\"color: #ECEFF4\">).<\/span><span style=\"color: #D8DEE9FF\">setType<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">type<\/span><span style=\"color: #ECEFF4\">).<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">(),<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               listener<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onConnected<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">block<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Unit<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">startConnection<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">object<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClientStateListener<\/span><span style=\"color: #D8DEE9FF\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           override fun onBillingSetupFinished<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingResult<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               block<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           }<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           override fun onBillingServiceDisconnected<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> {<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">\/\/<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Try<\/span><span style=\"color: #D8DEE9FF\"> to restart the connection on the next request to<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">\/\/<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Google<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Play<\/span><span style=\"color: #D8DEE9FF\"> by calling the startConnection<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> method<\/span><span style=\"color: #ECEFF4\">.<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           }<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       }<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">override<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">onPurchasesUpdated<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #D8DEE9\">billingResult<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #D8DEE9\">purchaseList<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">MutableList<\/span><span style=\"color: #81A1C1\">&lt;<\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #81A1C1\">&gt;<\/span><span style=\"color: #D8DEE9FF\">?<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">when<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">BillingResponseCode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OK<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchaseList <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">null<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #616E88\">\/\/to be discussed in the next article<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   on<\/span><span style=\"color: #8FBCBB\">PurchaseListener?<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onPurchaseSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #81A1C1\">null<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #81A1C1\">return<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               purchaseList<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">forEach<\/span><span style=\"color: #ECEFF4\">(::<\/span><span style=\"color: #D8DEE9FF\">processPurchase<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #81A1C1\">else<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #616E88\">\/\/error occured or user canceled<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               on<\/span><span style=\"color: #8FBCBB\">PurchaseListener?<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onPurchaseFailure<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #8FBCBB\">BillingClientWrapper<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">Error<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">debugMessage<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">processPurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">purchase<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseState <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">PurchaseState<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">PURCHASED<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           api<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">verifyPurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseToken<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> error <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">error <\/span><span style=\"color: #81A1C1\">!=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">null<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   on<\/span><span style=\"color: #8FBCBB\">PurchaseListener?<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onPurchaseSuccess<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">skus<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">firstOrNull<\/span><span style=\"color: #ECEFF4\">()<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">==<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #A3BE8C\">coin_pack_large<\/span><span style=\"color: #ECEFF4\">&quot;<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       <\/span><span style=\"color: #616E88\">\/\/consuming our only consumable product<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">consumeAsync<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                           <\/span><span style=\"color: #8FBCBB\">ConsumeParams<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">().<\/span><span style=\"color: #D8DEE9FF\">setPurchaseToken<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseToken<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                               <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> purchaseToken <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                           <\/span><span style=\"color: #81A1C1\">if<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">responseCode <\/span><span style=\"color: #81A1C1\">!=<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">BillingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">BillingResponseCode<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #8FBCBB\">OK<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                               <\/span><span style=\"color: #616E88\">\/\/implement retry logic or try to consume again in onResume()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">}<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">else<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #616E88\">\/\/handle verification error<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">acknowledgePurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #D8DEE9\">purchase<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #ECEFF4\">,<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #D8DEE9\">callback<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">AcknowledgePurchaseResponseListener<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       onConnected <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">acknowledgePurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #8FBCBB\">AcknowledgePurchaseParams<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">().<\/span><span style=\"color: #D8DEE9FF\">setPurchaseToken<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseToken<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">                   <\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">(),<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #D8DEE9\">callback<\/span><span style=\"color: #ECEFF4\">::<\/span><span style=\"color: #D8DEE9FF\">onAcknowledgePurchaseResponse<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #81A1C1\">private<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #81A1C1\">fun<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #88C0D0\">consumePurchase<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9\">purchase<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">Purchase<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #D8DEE9\">callback<\/span><span style=\"color: #81A1C1\">:<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #8FBCBB\">ConsumeResponseListener<\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       onConnected <\/span><span style=\"color: #ECEFF4\">{<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           billingClient<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">consumeAsync<\/span><span style=\"color: #ECEFF4\">(<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               <\/span><span style=\"color: #8FBCBB\">ConsumeParams<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">newBuilder<\/span><span style=\"color: #ECEFF4\">().<\/span><span style=\"color: #D8DEE9FF\">setPurchaseToken<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">purchase<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">purchaseToken<\/span><span style=\"color: #ECEFF4\">).<\/span><span style=\"color: #D8DEE9FF\">build<\/span><span style=\"color: #ECEFF4\">()<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">)<\/span><span style=\"color: #D8DEE9FF\"> <\/span><span style=\"color: #ECEFF4\">{<\/span><span style=\"color: #D8DEE9FF\"> billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> purchaseToken <\/span><span style=\"color: #81A1C1\">-&gt;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">               callback<\/span><span style=\"color: #ECEFF4\">.<\/span><span style=\"color: #D8DEE9FF\">onConsumeResponse<\/span><span style=\"color: #ECEFF4\">(<\/span><span style=\"color: #D8DEE9FF\">billingResult<\/span><span style=\"color: #ECEFF4\">,<\/span><span style=\"color: #D8DEE9FF\"> purchaseToken<\/span><span style=\"color: #ECEFF4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">           <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">       <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D8DEE9FF\">   <\/span><span style=\"color: #ECEFF4\">}<\/span><\/span>\n<span class=\"line\"><span style=\"color: #ECEFF4\">}<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>Talvez voc\u00ea pergunte por que os bot\u00f5es est\u00e3o ativos para todos os produtos, n\u00e3o importando se o usu\u00e1rio j\u00e1 os comprou ou n\u00e3o. Ou talvez voc\u00ea tenha algumas perguntas sobre o que acontece se voc\u00ea comprar as duas assinaturas. A primeira assinatura substituir\u00e1 a segunda, ou elas v\u00e3o coexistir? Confira os pr\u00f3ximos artigos para obter todas as respostas \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Em nosso segundo cap\u00edtulo, vamos tratar dos detalhes t\u00e9cnicos que envolvem o processamento de compras.<\/p>\n","protected":false},"author":43,"featured_media":143566,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[994],"tags":[],"page-builder":[],"class_list":["post-137944","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutorial-pt"],"acf":[],"_links":{"self":[{"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/posts\/137944","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/users\/43"}],"replies":[{"embeddable":true,"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/comments?post=137944"}],"version-history":[{"count":0,"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/posts\/137944\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/media\/143566"}],"wp:attachment":[{"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/media?parent=137944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/categories?post=137944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/tags?post=137944"},{"taxonomy":"page-builder","embeddable":true,"href":"https:\/\/adapty.io\/pt\/wp-json\/wp\/v2\/page-builder?post=137944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}