1 、问题

用Flutter写了页面跳转，提示错误如下

Navigator operation requested with a context that does not include a Navigator.

 

 

 

 

 

 

 

 

 

 

2 、我的代码

void main() {runApp(MyApp1());
}class MyApp1 extends StatelessWidget {@overrideWidget build(BuildContext context) {return MaterialApp(title: 'open url',home: Scaffold(appBar: AppBar(title: Text('hello flutter'),),body: Column(mainAxisAlignment: MainAxisAlignment.center,mainAxisSize: MainAxisSize.min,children: <Widget>[FlatButton(child: Text("go to new page"),textColor: Colors.blue,onPressed: () {Navigator.push(context, MaterialPageRoute(builder:(context) => NewPage()));},),],),),);}
}class NewPage extends StatelessWidget {@overrideWidget build(BuildContext context) {return Scaffold(appBar: AppBar(title: Text("hello word"),),body: Center(child: Text("this is new page"),),);}
}

 

 

 

 

 

 

 

 

 

 

 

 

 

3、原因

Navigator operation requested with a context that does not include a Navigator.

说明这个context上下文不一致，我们看下Navigator的继承关系

class Navigator extends StatefulWidget {
}

但是我的代码是这样的

class MyApp1 extends StatelessWidget {
}

我们需要使用StatefulWidget的Context

 

 

 

 

 

 

 

 

 

 

 

4、解决办法

void main() {runApp(MaterialApp(title: "Navigation basics",home: MyApp1(),));
}

用MaterialApp启动

class MaterialApp extends StatefulWidget {
***
}