How can I get the google username on Android?

I've seen references to using the AccountManager like Accessing Google Account Id /username via Android. But it seems like it's for grabbing the authtoken?

I just need access to the u开发者_Go百科sername, no passwords or any auth tokens.

I'm using android 2.1 sdk. How can I get the google username on Android?

As mentioned in the comments, Roman's answer to How to get the Android device's primary e-mail address solves it. Here's the code i used that will also strip out the username from the email.

public String getUsername() {
    AccountManager manager = AccountManager.get(this); 
    Account[] accounts = manager.getAccountsByType("com.google"); 
    List<String> possibleEmails = new LinkedList<String>();

    for (Account account : accounts) {
      // TODO: Check possibleEmail against an email regex or treat
      // account.name as an email address only for certain account.type values.
      possibleEmails.add(account.name);
    }

    if (!possibleEmails.isEmpty() && possibleEmails.get(0) != null) {
        String email = possibleEmails.get(0);
        String[] parts = email.split("@");

        if (parts.length > 1)
            return parts[0];
    }
    return null;
}

In new Android version you can't get the accounts with code due to security reason:-

it needs to be prompt to user, and if user agreed then only can be proceed with it.The code will be looks like below :-

 private val chooseAccount = registerForActivityResult(ActivityResultContracts.StartActivityForResult()){ result: ActivityResult ->
    result.apply {
        if (resultCode == RESULT_OK) {
            Timber.d("resultCode ==RESULT_OK")
            Timber.d(data?.getStringExtra(AccountManager.KEY_ACCOUNT_TYPE))
            Timber.d(data?.getStringExtra(AccountManager.KEY_ACCOUNT_NAME))
        } else if (resultCode == RESULT_CANCELED) {
            Timber.d("resultCode ==RESULT_CANCELED")
        }
    }
   
}




 override fun onCreate(savedInstanceState: Bundle?) {
//Note: setAllowableAccountsTypes you can change it as per your need
    chooseAccount.launch(
            AccountPicker.newChooseAccountIntent(
                AccountPicker.AccountChooserOptions.Builder()
                    .setAllowableAccountsTypes(listOf(GoogleAuthUtil.GOOGLE_ACCOUNT_TYPE))
                    .setAlwaysShowAccountPicker(true)
                    .build()
            ))
}