android - Retrieve account name with the NEW Google Drive API

Question

I set up the authorization process for Google Play Services as described under https://developers.google.com/drive/android/auth

Now that the user has authorized the app I want to retrieve the account name. But I can't find any method in the API (http://developer.android.com/reference/gms-packages.html) that would be helpful.

Answer 1

I assume that you already have QUICKSTART or DEMO, or something similar up-and-running, so I will refer to these 2 examples. In the BaseDemoActivity.java code, you'll notice that account selection is invoked when connection fails,

@Override public void onConnectionFailed(ConnectionResult result) {
  ...
  result.startResolutionForResult(this, REQUEST_CODE_RESOLUTION);
  ...
}

... and it comes back in onActivityResult(). I just grab the intent data and get the KEY_ACCOUNT_NAME, it is the selected email. The code below is modified from the DEMO's BaseDemoActivity.java (I mentioned above).

@Override protected void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
  switch (requestCode) {
    case REQUEST_CODE_RESOLUTION:
    if ((resultCode == RESULT_OK) && (data != null) && (data.getExtras() != null ))
      // user selected account, get it
      String email = data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME);
    else
      finish();    // user cancelled selection, an easy solution
    break;
  }

Hope it helps.