我想使用CupertinoPageRoute而不是Navigator.pushNamed 在MaterialApp中使用路由数组。 Navigator.pushNamed(上下文,p01.routeName);工作良好。但是我想完成两个项目。
我希望导航为Android中的Cupertino风格。从右到左,而不是从下到上。
导航将非常深入,我想添加一个返回按钮...。 Navigator.popUntil(上下文, ModalRoute.withName('/'));我可以回到特定位置 在导航堆栈中。
我如何使用名为Routes的路线 和 CupertinoPageRoute(builder:(context)=> p02.routeName);
import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'p01.dart';
import 'p02.dart';
import 'p03.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'Flutter Demo',
theme: new ThemeData(
primarySwatch: Colors.blue,
),
home: new MyHomePage(title: 'Flutter Demo Home Page'),
initialRoute: '/',
// routes: {
// '/p01' : (context) => p01(),
// '/p02' : (context) => p02(),
// '/p03' : (context) => p03(),
// },
//***** . this is what I am trying to use for routes.
routes: <String, WidgetBuilder>{
p01.routeName: (BuildContext context) => new p01(title: "p01"),
p02.routeName: (BuildContext context) => new p02(title: "p02"),
p03.routeName: (BuildContext context) => new p03(title: "p03"),
},
);
}
}
...
Padding(
padding: const EdgeInsets.all(8.0),
child: RaisedButton(
child: Text(" cup P01"),
onPressed: () {
print("p01 was pressed");
//Navigator.pushNamed(context, p01.routeName);
// CupertinoPageRoute(builder: (context) => AA02Disclaimer()),
//CupertinoPageRoute(builder: (context) => p02());
// CupertinoPageRoute( p02.routeName );
// p02.routeName: (BuildContext context) => new p02(title: "p02"),
//**** . this is the code I am trying to make work...
CupertinoPageRoute(builder: (context) => p02.routeName);
},
),
),
======== 这是返回到根目录的代码。
Padding(
padding: const EdgeInsets.all(8.0),
child: RaisedButton(
child: Text("/"),
onPressed: () {
print("/ was pressed");
// Navigator.pushNamed(context, p03.routeName);
Navigator.popUntil(context, ModalRoute.withName('/'));
},
),
),
答案 0 :(得分:2)
TL; DR::使用onGenerate
/ MaterialApp
中的CupertinoApp
使用自定义路由。例如CupertinoPageRoute
。如果您已经在使用Cupertino风格,请考虑使用CupertinoApp
,它会自动使用CupertinoPageRoute
。
我将答案分为两种解决方案,一种是默认MaterialApp
,另一种是CupertinoApp
(使用Cupertino-Style):
保持风格(MaterialApp):
如果要将MaterialApp保留为根窗口小部件,则必须用routes
实现替换MaterialApp
的{{1}}属性:
原文:
onGenerate
更改为routes: {
'/': (_) => HomePage(),
'deeper': (_) => DeeperPage(),
}
:
onGenerate
现在onGenerateRoute: (RouteSettings settings) {
switch (settings.name) {
case '/':
return CupertinoPageRoute(
builder: (_) => HomePage(), settings: settings);
case 'deeper':
return CupertinoPageRoute(
builder: (_) => DeeperPage(), settings: settings);
}
}
手动处理路由,并为每个路由使用CupertinoPageRoute。这将替换完整的onGenerate
结构。
快速独立示例:
routes: {...}
Cupterino样式(CupertinoApp):
如果您仍然想使用 Cupertino-style ,我建议您使用CupertinoApp小部件,而不要使用MaterialApp小部件(就像已经在注释中建议的那样) @ anmol.majhail)。
然后默认选择的导航将始终使用CupertinoPageRoute。
独立的快速示例:
import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
onGenerateRoute: (RouteSettings settings) {
switch (settings.name) {
case '/':
return CupertinoPageRoute(
builder: (_) => HomePage(), settings: settings);
case 'deeper':
return CupertinoPageRoute(
builder: (_) => DeeperPage(), settings: settings);
}
},
);
}
}
class HomePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Material!'),
),
body: Center(
child: RaisedButton(
child: Text('Take me deeper!'),
onPressed: () => Navigator.pushNamed(context, 'deeper'),
),
),
);
}
}
class DeeperPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Material!'),
),
body: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: [
RaisedButton(
child: Text('Home :)'),
onPressed: () =>
Navigator.popUntil(context, ModalRoute.withName('/')),
),
RaisedButton(
child: Text('Deeper!'),
onPressed: () => Navigator.pushNamed(context, 'deeper'),
),
],
),
);
}
}