Flutter路由检测插件route_detector的使用

Flutter路由检测插件route_detector的使用

Route Detector 是一个用于轻松观察导航路径的 Flutter 库。

安装

1. 在 pubspec.yaml 文件中添加最新版本的包。

dependencies:
  route_detector: - latest version -

1. 导入包并在你的 Flutter 应用中使用它。

import 'package:route_detector/route_detector.dart';

使用

首先，创建一个路由观察者并将其提供给 MaterialApp 的 navigatorObservers 列表。然后在需要监测的页面中使用 RouteDetector。

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // 创建你的路由观察者
  static final RouteObserver<PageRoute> routeObserver = RouteObserver<PageRoute>();

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      navigatorObservers: [routeObserver], // 提供它在导航观察者列表中
      home: const MyHomePage(title: 'Flutter Route Detector Example'),
    );
  }
}

class MyHomePage extends StatelessWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

  [@override](/user/override)
  Widget build(BuildContext context) {
    return RouteDetector(
      // 使用它
      routeObserver: MyApp.routeObserver,
      routeName: "MyHomePage",
      onLeaveScreen: () {},
      onShowingScreen: () {},
      showLogs: true,
      child: Scaffold(
        appBar: AppBar(
          title: Text(title),
        ),
        body: Center(
          child: Text(
            'Screen One',
            style: Theme.of(context).textTheme.headline4,
          ),
        ),
      ),
    );
  }
}

示例

下面是一个完整的示例，展示了如何在 Flutter 应用中使用 route_detector 插件。

import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:route_detector/route_detector.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // 创建你的路由观察者
  static final RouteObserver<PageRoute> routeObserver = RouteObserver<PageRoute>();

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      navigatorObservers: [
        routeObserver // 提供它在导航观察者列表中
      ],
      home: const MyHomePage(title: 'Flutter Route Detector Example'),
    );
  }
}

class MyHomePage extends StatelessWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

  [@override](/user/override)
  Widget build(BuildContext context) {
    return RouteDetector(
      // 使用它
      routeObserver: MyApp.routeObserver,
      routeName: "MyHomePage",
      onLeaveScreen: () {
        Fluttertoast.showToast(msg: "You're leaving the screen");
      },
      onShowingScreen: () {
        Fluttertoast.showToast(msg: "You're showing the screen");
      },
      showLogs: true,
      child: Scaffold(
        appBar: AppBar(
          actions: [
            IconButton(
                onPressed: () {
                  Navigator.push(context,
                      MaterialPageRoute(builder: (c) => const NextScreen()));
                },
                icon: const Icon(Icons.arrow_forward_ios))
          ],
          title: Text(title),
        ),
        body: Center(
          child: Text(
            'Screen One',
            style: Theme.of(context).textTheme.headline4,
          ),
        ),
      ),
    );
  }
}

class NextScreen extends StatelessWidget {
  const NextScreen({Key? key}) : super(key: key);

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("Second Screen"),
      ),
      body: Center(
        child: Text(
          'Screen Two',
          style: Theme.of(context).textTheme.headline4,
        ),
      ),
    );
  }
}