android - usingOAuth2 deprecated?

Question

I've been working on an Android App that uses Google Drive API. It was originally build from the quickstart example here. The simplified sequence of API calls (with proper error handling not shown here) is:

 GoogleAccountCredential cred = GoogleAccountCredential.usingOAuth2(this, DriveScopes.DRIVE_FILE);
 cred.setSelectedAccountName("...");  
 Drive drvSvc = new Drive.Builder (AndroidHttp.newCompatibleTransport(), new GsonFactory(), cred).build();
 FileList gooLst = drvSvc.files().list().setMaxResults(MAX_DOWN).setQ(_rqst).execute();

It has been working fine and I am just about to release my App. But suddenly, after Drive API update, I'm getting a warning

The method usingOAuth2(Context, String, String...) from the type GoogleAccountCredential is deprecated

What's happening? Is there another way to obtain credentials? Is there an edited version of quickstart example available anywhere?

Thanks in advance for any clarification. sean

Answer 1

So, the simple answer to my own question is

replace:

GoogleAccountCredential crd = GoogleAccountCredential.usingOAuth2(this, DriveScopes.DRIVE_FILE);

with

GoogleAccountCredential crd = GoogleAccountCredential.usingOAuth2(this, Arrays.asList(DriveScopes.DRIVE_FILE));