Flutter How to pass touch event through a platform view to another

Question

I have an app with two platform view one of these is a doodle view and another is webview, below is my code

Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('test'),
      ),
      body: BlocProvider<CourseDocBloc>(
        create: (context) => CourseDocBloc(),
        child: Container(
          height: double.infinity,
          child: Stack(
            children: <Widget>[
              Listener(
                child: WebView(
                  initialUrl: 'https://google.com',
                  javascriptMode: JavascriptMode.unrestricted,
                  onPageStarted: (url) {
                    print('start load');
                  },
                  onPageFinished: (url) {
                    print('load finished');
                  },
                ),
               onPointerDown: (e) => {print('web down')},
               onPointerUp: (e) => {print('web up')},
              ),
              UiKitView(
                viewType: 'GLView',
                hitTestBehavior: PlatformViewHitTestBehavior.transparent, 
                onPlatformViewCreated: (_) => created(),
              )
            ],
          ),
        ),
      ),
    );
  }

when I set UiKitView hitTestBehavior: PlatformViewHitTestBehavior.transparent，the bottom Listener will print web down, web up ..., but the WebView can not receive touch event, I can't input and click button in html. the GLView is just a OpenGL View to render doodle.

---

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! Doctor found issues in 2 categories.

Answer 1

check this out https://stackoverflow.com/a/55431380

Wrapping a widget with IgnorePointer makes all touch events for the widget pass through to the widget underneath.

child: Stack(
            children: <Widget>[
              Listener(
                child: WebView(
                  initialUrl: 'https://google.com',
                  javascriptMode: JavascriptMode.unrestricted,
                  onPageStarted: (url) {
                    print('start load');
                  },
                  onPageFinished: (url) {
                    print('load finished');
                  },
                ),
               onPointerDown: (e) => {print('web down')},
               onPointerUp: (e) => {print('web up')},
              ),
              IgnorePointer(
                child: UiKitView(
                 viewType: 'GLView',
                 hitTestBehavior: PlatformViewHitTestBehavior.transparent, 
                 onPlatformViewCreated: (_) => created(),
               ),
             ),
            ],
          ),