dart
void main() {
  runApp(MyApp());
  // Add this line to configure 1Flow
  OneFlow.configure('<1flow_project_key>',true); // true if want to enable surveys otherwise false.
 /* Adding 'oneFlowSurveyFinishNotificationHandler' event listener. 
	     This event will be triggered as soon as user will submit the survey. */
  OneFlow.methodchannel.setMethodCallHandler(oneFlowSurveyFinishNotificationHandler);
}


/* Event listener function which will be called 
   as soon as 'oneFlowSurveyFinishNotification' will be triggered. */
Future<void> oneFlowSurveyFinishNotificationHandler(MethodCall call) async {
    final String method = call.method;
    dynamic argument = call.arguments;
    switch (method) {
      case "oneFlowSurveyFinishNotification":
        {
          print("oneFlowSurveyFinishNotification: $argument");
        }
        break;
      default:
        {
          print("Invalid choice");
        }
        break;
    }
  }

json
	
Example:-
{
  "survey_id": "XXXXXXXXXXXXX",
  "survey_name": "Rating Survey",
  "trigger_name": "fileSaved",
  "status": "finished",
  "screens": [
    {
      "question_title": "How it worked",
      "question_type": "checkbox",
      "screen_id": "XXXXXXXXXXXXX",
      "question_ans": [
        {
          "answer_value": "Option 1"
        },
        {
          "answer_value": "Option 2"
        },
        {
          "answer_value": "Other",
          "other_value": "Checkbox Other"
        }
      ]
    },
    {
      "question_title": "Your valuable feedback",
      "question_type": "text",
      "screen_id": "XXXXXXXXXXXXX",
      "question_ans": [
        {
          "answer_value": "This is user's feedback"
        }
      ]
    }
  ]
}