unregisterSurveyListeners method
Unregisters Survey activity listeners
Implementation
Future<bool?> unregisterSurveyListeners() async {
if (onSurveyDisplayedListener == null &&
onQuestionAnsweredListener == null &&
onSurveyClosedListener == null &&
onSurveyCompletedListener == null) {
return false;
}
onSurveyDisplayedListener = null;
onQuestionAnsweredListener = null;
onSurveyClosedListener = null;
onSurveyCompletedListener = null;
return await _channel.invokeMethod('unregisterSurveyListeners');
}