与Navigator2.0好像不兼容 #69
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给下可复现问题场景的最简demo：可执行的main文件 |
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
// 该文件可独立运行
// 右击点击 create 'router_example.dart' -> OK
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
final delegate = MyRouteDelegate(
onGenerateRoute: (RouteSettings settings) {
return MaterialPageRoute(
settings: settings,
builder: (BuildContext context) {
return MyHomePage(title: 'Route: ${settings.name}');
},
);
},
);
@override
Widget build(BuildContext context) {
return MaterialApp.router(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
routeInformationParser: MyRouteParser(),
routerDelegate: delegate,
builder: FlutterSmartDialog.init(),
);
}
}
class MyRouteParser extends RouteInformationParser<String> {
@override
Future<String> parseRouteInformation(RouteInformation routeInformation) {
return SynchronousFuture(routeInformation.location);
}
@override
RouteInformation restoreRouteInformation(String configuration) {
return RouteInformation(location: configuration);
}
}
class MyRouteDelegate extends RouterDelegate<String>
with PopNavigatorRouterDelegateMixin<String>, ChangeNotifier {
final _stack = <String>[];
static MyRouteDelegate of(BuildContext context) {
final delegate = Router.of(context).routerDelegate;
assert(delegate is MyRouteDelegate, 'Delegate type must match');
return delegate as MyRouteDelegate;
}
MyRouteDelegate({
@required this.onGenerateRoute,
});
final RouteFactory onGenerateRoute;
@override
GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
@override
String get currentConfiguration => _stack.isNotEmpty ? _stack.last : null;
List<String> get stack => List.unmodifiable(_stack);
void push(String newRoute) {
_stack.add(newRoute);
notifyListeners();
}
void remove(String routeName) {
_stack.remove(routeName);
notifyListeners();
}
@override
Future<void> setInitialRoutePath(String configuration) {
return setNewRoutePath(configuration);
}
@override
Future<void> setNewRoutePath(String configuration) {
_stack
..clear()
..add(configuration);
return SynchronousFuture<void>(null);
}
bool _onPopPage(Route<dynamic> route, dynamic result) {
if (_stack.isNotEmpty) {
if (_stack.last == route.settings.name) {
_stack.remove(route.settings.name);
notifyListeners();
}
}
return route.didPop(result);
}
@override
Widget build(BuildContext context) {
print('${describeIdentity(this)}.stack: $_stack');
return Navigator(
key: navigatorKey,
onPopPage: _onPopPage,
observers: [FlutterSmartDialog.observer],
pages: [
for (final name in _stack)
MyPage(
key: ValueKey(name),
name: name,
),
],
);
}
}
class MyPage extends Page {
const MyPage({
LocalKey key,
String name,
}) : super(
key: key,
name: name,
);
Route createRoute(BuildContext context) {
return MaterialPageRoute(
settings: this,
builder: (BuildContext context) {
return MyHomePage(title: 'Route: ${name}');
},
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
static int _counter = 0;
void _showDialog() {
SmartDialog.show(
alignment: Alignment.center,
maskColor: Colors.black38,
builder: (_) {
return Container(
height: 150,
width: 150,
color: Colors.white,
alignment: Alignment.center,
child: ElevatedButton(
child: const Text('进入下级页面'),
onPressed: _jumpNextPage,
),
);
},
);
}
void _jumpNextPage() {
MyRouteDelegate.of(context).push('Route$_counter');
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headline4,
),
],
),
),
floatingActionButton: Row(
mainAxisSize: MainAxisSize.min,
children: [
FloatingActionButton(
heroTag: 'add',
onPressed: _showDialog,
tooltip: 'Increment',
child: Icon(Icons.add),
),
],
),
);
}
} |
dependencies:
flutter_smart_dialog: ^4.0.9+7 |
感谢回答 |
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版本信息
描述bug/需求
使用Navigator 2.0会报错，老版本3.x好像不会
错误信息:
The text was updated successfully, but these errors were encountered: