Flutter：在小部件的状态initState中从Navigator获取传递的参数

使用如下

MaterialApp.onGenerateRoute

onGenerateRoute: (RouteSettings settings) {  print('build route for ${settings.name}');  var routes = <String, WidgetBuilder>{    "hello": (ctx) => Hello(settings.arguments),    "other": (ctx) => SomeWidget(),  };  WidgetBuilder builder = routes[settings.name];  return MaterialPageRoute(builder: (ctx) => builder(ctx));},

现在您可以简单地使用

NavigatorState.pushNamed

Navigator.of(context).pushNamed("hello", arguments: "world");

在这里，您有一些测试

Hello

class Hello extends StatelessWidget {  final String greet;  Hello(this.greet);  @override  Widget build(BuildContext context) {    return Scaffold(      appBar: AppBar(),      body: Center(        child: Text(          'hello $greet',          textScaleFactor: 5.0,        ),      ),    );  }}