Flutter路由守卫拦截的实现

Navigator.of(context).push(
  MaterialPageRoute(builder: (context) => LoginPage()),
);

/// lib/router/index.dart
import 'package:cyber_security/view/login/index.dart';
import 'package:cyber_security/view/main/index.dart';
import 'package:cyber_security/view/not_found/index.dart';
import 'package:flutter/material.dart';

Map<String, WidgetBuilder> routeList={
  "notFound":(content) =>const NotFound(),
  "login":(content) =>const LoginPage(),
  "main":(content) =>const MainPage(),
};

final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        key: navigatorKey,
        debugShowCheckedModeBanner: false,
        title: 'Flutter APP',
        initialRoute: 'login', // 默认进入的页面
        onGenerateRoute: _routeGenerator);
  }
  /// 实现路由守卫
  Route _routeGenerator(RouteSettings settings) {
    final name = settings.name;
    var builder = routeList[name];
    // 如果路由表中未定义，跳转到未定义路由页面
    builder ??= (content) => const NotFound();
    // 用户权限认证的逻辑处理
    ……
    // 构建动态的route
    final route = MaterialPageRoute(
      builder: builder,
      settings: settings,
    );
    return route;
  }
}