visibility_detector 在iOS上 左滑返回有几率会出发两次

[WHAYL]

版本信息

• Flutter版本：[举例：v3.19.2]
• flutter_smart_dialog版本：[举例：v4.9.6]
• visibility_detector: ^0.4.0+2

描述bug/需求

onVisibilityChanged 在iOS上 左滑返回有几率会出发两次
VisibilityDetector(
key: Key("reca"),
onVisibilityChanged: (VisibilityInfo visibilityInfo) {
var visiblePercentage =
visibilityInfo.visibleFraction * 100;
if (visiblePercentage == 100.0) {
print("首页首页"); ///在iOS上 左滑返回有几率会出发两次
}
},
child:***)

问题demo

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'),
      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> {
  int _counter = 0;

  void _incrementCounter() {
    Navigator.push(
      context,
      MaterialPageRoute(builder: (context) => Page1()),
    );
  }

  @override
  Widget build(BuildContext context) {
    print("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: Container(
        child: Column(
          children: [
            Expanded(
              child: VisibilityDetector(
                key: Key("rec"),
                onVisibilityChanged: (VisibilityInfo visibilityInfo) {
                  var visiblePercentage = visibilityInfo.visibleFraction * 100;
                  if (visiblePercentage == 100.0) {
                    print("推荐页面111");
                  }
                },
                child: PageView(
                  physics: NeverScrollableScrollPhysics(),
                  children: <Widget>[
                    VisibilityDetector(
                      key: Key("reca"),
                      onVisibilityChanged: (VisibilityInfo visibilityInfo) {
                        var visiblePercentage =
                            visibilityInfo.visibleFraction * 100;
                        if (visiblePercentage == 100.0) {
                          print("首页首页");
                        }
                      },
                      child: Container(
                        width: 300,
                        // color: Colors.red,
                        child: Column(
                          children: [
                            const Text(
                              'You have pushed the button this many times:',
                            ),
                            InkWell(
                              onTap: () {
                                _incrementCounter();
                              },
                              child: 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 {
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return PageView(
      children: [
        Center(
          child: Text(
            "page1",
            style: TextStyle(color: Colors.red),
          ),
        )
      ],
    );
  }
}

[xdd666t]

• 这个问题解决了，试下新版本吧

dependencies:
  flutter_smart_dialog: ^4.9.7+2