Question

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 username, no passwords or any auth tokens.

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

Answer 1

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;
}