Get an oauth2 token for an google account

token

    private void getToken(final Context context, final String accountName)
    {
      final String scope = "oauth2:https://www.googleapis.com/auth/userinfo.profile";
    	AsyncTask task = new AsyncTask() {
    		@Override
    		protected Object doInBackground(Object... params) {
    			final String token;
    	    	 try {
    	    	     token = GoogleAuthUtil.getToken(context, accountName, scope);
    	    	     Log.d(TAG, token);
    	    	 } catch (GooglePlayServicesAvailabilityException playEx) {
    	    		 Log.d(TAG, "OMG A CRASH1");
    	    	     Dialog dialog = GooglePlayServicesUtil.getErrorDialog(
    	    	         playEx.getConnectionStatusCode(),
    	    	         (Activity) context,
    	    	         REQUEST_AUTHORIZATION);
    	    	     // Use the dialog to present to the user.
    	    	 } catch (UserRecoverableAuthException recoverableException) {
    	    		 Log.d(TAG, "OMG A CRASH2");
    	    	     Intent recoveryIntent = recoverableException.getIntent();
    	    	     startActivityForResult(recoveryIntent, 2);
    	    	     // Use the intent in a custom dialog or just startActivityForResult.
    	    	 } catch (GoogleAuthException authEx) {
    	    	     // This is likely unrecoverable.
    	    	     Log.e(TAG, "Unrecoverable authentication exception: " + authEx.getMessage(), authEx);
    	    	 } catch (IOException ioEx) {
    	    	     Log.i(TAG, "transient error encountered: " + ioEx.getMessage());
    	    	 }
    			return null;
    		}
    	};
    	task.execute((Void) null);
    }