在“颤振”中路由按钮时不断出错。

Question

当我尝试将一个按钮路由到一个小部件时，我一直会收到这个错误。

======== Exception caught by gesture ===============================================================
The following assertion was thrown while handling a gesture:
Could not find a generator for route RouteSettings("/SantosDumont", null) in the _WidgetsAppState.

这是密码。我想使用info按钮类调用多个历史人物，然后列出ListTile中的每个历史数字，比如桑托斯杜蒙特路由。

class Hwk3 extends StatefulWidget {
  const Hwk3({Key? key}) : super(key: key);

  @override
class _Hwk3State extends State<Hwk3> {
  var nameArray = [
    'Pablo Picasso',
    'Santos Dumont'
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Historical Figures'),
      ),
      body: ListView.builder(
        itemCount: nameArray.length,
        itemBuilder: (BuildContext context, index) {
          return ListTile(
              title: Text(nameArray[index]),
              trailing: InfoButtons(historicalfigure: '/SantosDumont'));
        },
      ),
    );
  }
}

class InfoButtons extends StatelessWidget {
  final String historicalfigure;

  InfoButtons({required this.historicalfigure});
  @override
  Widget build(BuildContext context) {
    return (IconButton(
        icon: const Icon(Icons.info),
        tooltip: "Press for more information on historical figure",
        onPressed: () {
          Navigator.of(context).pushNamed(historicalfigure);
        }));
  }
}

Answer 1

您需要在/SantosDumont内部的路由中定义MaterialApp，或者使用Navigator.of(context).push。看看这个链接：用指定的路线导航