Save passwords with Credential Saving

To enable One Tap sign-in for returning users, you can prompt users to save their password with Google. The user will be able to sign in with their saved passwords in your app and on the web.

When you start the save password flow, the user will be presented with a bottomsheet dialog allowing them to choose if they want to save their password and to which Google account they want to save it.

Launch password save bottomsheet dialog

You should launch the password save dialog after you have authenticated the username and password with your backend. Keep the credentials in memory while authenticating. After you have confirmed the credentials are valid, launch the save dialog by doing the following:

1. Create a new SignInPassword object. It should be initialized with the user id they use with your service (for example their username or email address) and password that you want to save.

   private static final int REQUEST_CODE_GIS_SAVE_PASSWORD = 2; /* unique request id */
   private void savePassword() {
       SignInPassword signInPassword = new SignInPassword(userId, password);
       ...
   

2. Create a SavePasswordRequest object

   SavePasswordRequest savePasswordRequest =
       SavePasswordRequest.builder().setSignInPassword(signInPassword).build();
   

3. Get a PendingIntent to display the password save dialog from Identity.getCredentialSavingClient and launch the flow:

   Identity.getCredentialSavingClient(activity)
      .savePassword(savePasswordRequest)
      .addOnSuccessListener(
          result -> {
              startIntentSenderForResult(
                  result.getPendingIntent().getIntentSender(),
                  REQUEST_CODE_GIS_SAVE_PASSWORD,
                  /* fillInIntent= */ null,
                  /* flagsMask= */ 0,
                  /* flagsValue= */ 0,
                  /* extraFlags= */ 0,
                  /* options= */ null);
          })
   

Handle password save results

Handle the result of the password save flow in onActivityResult:

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == REQUEST_CODE_GIS_SAVE_PASSWORD) {
        if (resultCode == Activity.RESULT_OK) {
            /* password was saved */
        } else if (resultCode == Activity.RESULT_CANCELED) {
            /* password saving was cancelled */
        }
    }
}

private ActivityResultLauncher<IntentSenderRequest> savePasswordHandler =
    registerForActivityResult(new ActivityResultContracts.StartIntentSenderForResult(), result -> {
        // handle intent result here
    });