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Babel includes JSX processing.

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Flutter

              
                import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('事件通知'),
        ),
        body: NotificationListenerPage(),
      ),
    );
  }
}

class NotificationListenerPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // 监听滚动通知
    return NotificationListener(
      // ignore: missing_return
      onNotification: (notification) {
        switch (notification.runtimeType) {
          case ScrollStartNotification:
            print('ScrollStart');
            break;
          case ScrollUpdateNotification:
            print('ScrollUpdate');
            break;
          case ScrollEndNotification:
            print('ScrollEnd');
            break;
          case OverscrollNotification:
            print('Overscroll');
            break;
        }
      },
      child: ListView.builder(
        itemCount: 100,
        itemBuilder: (context, index) {
          return ListTile(
            title: Text("$index"),
          );
        },
      ),
    );
  }
}

              
            
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999px

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