code: public void authenticate(Activity activity) {
          activity.startActivityForResult(EvernoteLoginActivity.createIntent(activity, mConsumerKey, mConsumerSecret, mSupportAppLinkedNotebooks, mLocale), REQUEST_CODE_LOGIN);
      }
docs: Similar to {@link EvernoteSession#authenticate(FragmentActivity)}, but instead of opening a dialog
  this method launches a separate {@link Activity}.
  
  <p/>
  
  The calling {@code activity} should override {@link Activity#onActivityResult(int, int, android.content.Intent)}. The {@code requestCode}
  is {@link EvernoteSession#REQUEST_CODE_LOGIN}. The {@code resultCode} is either {@link Activity#RESULT_OK} or
  {@link Activity#RESULT_CANCELED}.
  
  @param activity The {@link Activity} launching the {@link EvernoteLoginActivity}.