Identify users in Android SDK

Adapty creates an internal profile ID for every user. However, if you have your own authentication system, you should set your own Customer User ID. You can find users by their Customer User ID in the Profiles section and use it in the server-side API, which will be sent to all integrations.

Setting customer user ID on configuration

If you have a user ID during configuration, just pass it as customerUserId parameter to .activate() method:

Adapty.activate(applicationContext, "PUBLIC_SDK_KEY", customerUserId = "YOUR_USER_ID")

tip

Want to see a real-world example of how Adapty SDK is integrated into a mobile app? Check out our sample apps, which demonstrate the full setup, including displaying paywalls, making purchases, and other basic functionality.

Setting customer user ID after configuration

If you don't have a user ID in the SDK configuration, you can set it later at any time with the .identify() method. The most common cases for using this method are after registration or authorization, when the user switches from being an anonymous user to an authenticated user.

Kotlin

Adapty.identify("YOUR_USER_ID") { error ->
    if (error == null) {
        // successful identify
    }
}

Java

Adapty.identify("YOUR_USER_ID", error -> {
    if (error == null) {
        // successful identify
    }
});

Request parameters:

• Customer User ID (required): a string user identifier.

warning

Resubmitting of significant user data

In some cases, such as when a user logs into their account again, Adapty's servers already have information about that user. In these scenarios, the Adapty SDK will automatically switch to work with the new user. If you passed any data to the anonymous user, such as custom attributes or attributions from third-party networks, you should resubmit that data for the identified user.

It's also important to note that you should re-request all paywalls and products after identifying the user, as the new user's data may be different.

Logging out and logging in

You can logout the user anytime by calling .logout() method:

Kotlin

Adapty.logout { error ->
    if (error == null) {
        // successful logout
    }
}

Java

Adapty.logout(error -> {
    if (error == null) {
        // successful logout
    }
});

You can then login the user using .identify() method.