code: @Override
  	protected Boolean doInBackground(Void... params) {
  		try {
  			return launcher.launch(context, extras);
  		}
  		catch (Exception e) {
  			error = e;
  		}
  		
  		return false;
  	}
docs: /* (non-Javadoc)
  @see android.os.AsyncTask#doInBackground(Params[])