flutter 路由

路由页面配置

import 'package:flutter/material.dart';
import '../pages/Tabs.dart';
import '../pages/Form.dart';
import '../pages/Search.dart';
import '../pages/Product.dart';
import '../pages/ProductInfo.dart';

//配置路由
//arguments 未有参数的路由
final routes={
      '/':(context)=>Tabs(),
      '/form':(context)=>FormPage(),
      '/product':(context)=>ProductPage(),
      '/productinfo':(context,{arguments})=>ProductInfoPage(arguments:arguments),
      '/search':(context,{arguments})=>SearchPage(arguments:arguments),
};

//固定写法 可直接复制使用 
// ignore: missing_return
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;
        }
      }
};

在main.dart文件中配置路由

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);
  }
}

无参数直接跳转

Navigator.pushNamed(context, ‘/productinfo’);

有参数跳转传值

Navigator.pushNamed(context, '/productinfo',arguments: {"pid":456});

页面内获取上个页面传递的路由参数 arguments

import 'package:flutter/material.dart';

class ProductInfoPage extends StatefulWidget {
  final Map arguments;
  ProductInfoPage({Key key,this.arguments}) : super(key: key);

  _ProductInfoPageState createState() => _ProductInfoPageState(arguments:this.arguments);
}

class _ProductInfoPageState extends State {
  Map arguments;
  _ProductInfoPageState({this.arguments});
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('商品详情'),
      ),
      body: Container(
        child: Text("pid=${arguments["pid"]}"),
      ),
    );
  }
}

页面返回使用的路由函数

Navigator.of(context).pop();