EventChannel native pass data to Flutter

Objective: Native page initiative to pass information to the Flutter page

Step 1 flutter

Defined EventChannel

static  const the EventChannel the EventChannel EventChannel = ( "sample.flutter.io/test_event_channel"); // the Samples may be replaced with the actual package name. To keep the corresponding native.

InitState override methods, monitoring information transfer

  @override
  void initState(){
    super.initState();
    eventChannel.receiveBroadcastStream().listen(_onEnvent,onError: _onError);
  }

  // receiving the passed parameter activity obj 
  void _onEnvent (Object obj) {
    setState(() {

    });
  }

  void _onError(Object obj){

  }

2 original page

Creating EventChannel , by setSreamHandler in the EventSink pass information to flutter

new EventChannel((FlutterView) flutterView,"Event_Channel").setStreamHandler(new EventChannel.StreamHandler() {
            @Override
            public void onListen(Object o, EventChannel.EventSink eventSink) {
                eventSink.success("hello world !");
            }

            @Override
            public  void onCancel (Object o) {

            }
        });