flutter AppBar路由Navigator之命名路由

1、配置路由文件Routes.dart

import 'package:flutter/material.dart';

import '../pages/Tabs.dart';
import '../pages/Form.dart';
import '../pages/Search.dart';//配置路由
final routes={
      '/':(context)=>Tabs(),
      '/form':(context)=>FormPage(),
      '/search':(context,{arguments})=>SearchPage(arguments:arguments),
};

//固定写法
var onGenerateRoute=(RouteSettings settings) {
      // 统一处理
      final String name = settings.name; 
      final Function pageContentBuilder = routes[name];
      if (pageContentBuilder != null) {
        if (settings.arguments != null) {
          final Route route = MaterialPageRoute(
              builder: (context) =>
                  pageContentBuilder(context, arguments: settings.arguments));
          return route;
        }else{
            final Route route = MaterialPageRoute(
              builder: (context) =>
                  pageContentBuilder(context));
            return route;
        }
      }
};

然后在main.dart引入Routes.dart

import 'Routes.dart路径'

import 'package:flutter/material.dart';
import 'routes/Routes.dart';

void main() => runApp(MyApp());
class MyApp extends StatelessWidget {  
  
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      // home:Tabs(),   
      initialRoute: '/',     //初始化的时候加载的路由
      onGenerateRoute: onGenerateRoute
     
    );
  }
}

路由传参初页面

import 'package:flutter/material.dart';

class HomePage extends StatefulWidget {
  HomePage({Key key}) : super(key: key);
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  @override
  Widget build(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.center,
      mainAxisAlignment: MainAxisAlignment.center,
      children: <Widget>[
        RaisedButton(
            child: Text("跳转到搜索页面"),
            onPressed: () {
              //路由跳转
              Navigator.pushNamed(context, '/search',arguments: {
                "id":123
              });
            },
            color: Theme.of(context).accentColor,
            textTheme: ButtonTextTheme.primary
        ),
      ],
    );
  }
}

接收参数页面

import 'package:flutter/material.dart';

class SearchPage extends StatelessWidget {
  //接收页面参数
  final arguments;
  SearchPage({this.arguments});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar:AppBar(
        title: Text("搜索页面"),
      ) ,
      body: Text("搜索页面内容区域${arguments != null ? arguments['id'] : '0'}"),
    );
  }
}