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Reconstruct the implementation of initialization.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,144 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter_smart_dialog/flutter_smart_dialog.dart'; | ||
| import 'package:visibility_detector/visibility_detector.dart'; | ||
|
|
||
| void main() { | ||
| runApp(const MyApp()); | ||
| } | ||
|
|
||
| class MyApp extends StatelessWidget { | ||
| const MyApp({super.key}); | ||
|
|
||
| // This widget is the root of your application. | ||
| @override | ||
| Widget build(BuildContext context) { | ||
| return MaterialApp( | ||
| title: 'Flutter Demo', | ||
| theme: ThemeData( | ||
| colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple), | ||
| useMaterial3: true, | ||
| ), | ||
| home: const MyHomePage(title: 'Flutter Demo Home Page'), | ||
| navigatorObservers: [FlutterSmartDialog.observer], | ||
| builder: FlutterSmartDialog.init(), //这里注释掉就不会有问题 | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| class MyHomePage extends StatefulWidget { | ||
| const MyHomePage({super.key, required this.title}); | ||
|
|
||
| final String title; | ||
|
|
||
| @override | ||
| State<MyHomePage> createState() => _MyHomePageState(); | ||
| } | ||
|
|
||
| class _MyHomePageState extends State<MyHomePage> { | ||
| final int _counter = 0; | ||
|
|
||
| void _incrementCounter() { | ||
| Navigator.push( | ||
| context, | ||
| MaterialPageRoute(builder: (context) => const Page1()), | ||
| ); | ||
| } | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| debugPrint("rebuild"); | ||
| // This method is rerun every time setState is called, for instance as done | ||
| // by the _incrementCounter method above. | ||
| // | ||
| // The Flutter framework has been optimized to make rerunning build methods | ||
| // fast, so that you can just rebuild anything that needs updating rather | ||
| // than having to individually change instances of widgets. | ||
| return Scaffold( | ||
| appBar: AppBar( | ||
| // TRY THIS: Try changing the color here to a specific color (to | ||
| // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar | ||
| // change color while the other colors stay the same. | ||
| backgroundColor: Theme.of(context).colorScheme.inversePrimary, | ||
| // Here we take the value from the MyHomePage object that was created by | ||
| // the App.build method, and use it to set our appbar title. | ||
| title: Text(widget.title), | ||
| ), | ||
| body: Column( | ||
| children: [ | ||
| Expanded( | ||
| child: VisibilityDetector( | ||
| key: const Key("rec"), | ||
| onVisibilityChanged: (VisibilityInfo visibilityInfo) { | ||
| var visiblePercentage = visibilityInfo.visibleFraction * 100; | ||
| if (visiblePercentage == 100.0) { | ||
| debugPrint("推荐页面111"); | ||
| } | ||
| }, | ||
| child: PageView( | ||
| physics: const NeverScrollableScrollPhysics(), | ||
| children: <Widget>[ | ||
| VisibilityDetector( | ||
| key: const Key("reca"), | ||
| onVisibilityChanged: (VisibilityInfo visibilityInfo) { | ||
| var visiblePercentage = | ||
| visibilityInfo.visibleFraction * 100; | ||
| if (visiblePercentage == 100.0) { | ||
| debugPrint("首页首页"); | ||
| } | ||
| }, | ||
| child: SizedBox( | ||
| width: 300, | ||
| // color: Colors.red, | ||
| child: Column( | ||
| children: [ | ||
| const Text( | ||
| 'You have pushed the button this many times:', | ||
| ), | ||
| InkWell( | ||
| onTap: () { | ||
| _incrementCounter(); | ||
| }, | ||
| child: const Text("dfdfd"), | ||
| ) | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| Text( | ||
| '$_counter', | ||
| style: Theme.of(context).textTheme.headlineMedium, | ||
| ), | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| Container(width: 200, height: 40, color: Colors.red) | ||
| ], | ||
| ), | ||
| floatingActionButton: FloatingActionButton( | ||
| onPressed: _incrementCounter, | ||
| tooltip: 'Increment', | ||
| child: const Icon(Icons.add), | ||
| ), // This trailing comma makes auto-formatting nicer for build methods. | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| class Page1 extends StatelessWidget { | ||
| const Page1({super.key}); | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) { | ||
| // TODO: implement build | ||
| return PageView( | ||
| children: const [ | ||
| Center( | ||
| child: Text( | ||
| "page1", | ||
| style: TextStyle(color: Colors.red), | ||
| ), | ||
| ) | ||
| ], | ||
| ); | ||
| } | ||
| } |
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