मैं रूट के साथ एक स्क्रीन से दूसरे स्क्रीन पर नेविगेट करने की कोशिश कर रहा हूं। जब मैं पृष्ठ पर जाने वाले मार्ग पर जाने के लिए बटन दबाता हूं बशर्ते मुझे त्रुटि मिले
I/flutter ( 8790): Another exception was thrown: There are multiple heroes that share the same tag within a subtree.
यहाँ कोड है:
मार्ग:
<String, WidgetBuilder>{
'/first':(BuildContext context) =>NavigatorOne() ,
'/second':(BuildContext context) =>NavigatorTwo(),
'/third':(BuildContext context) =>NavigatorThree(),
},
Navigator.of(context).pushNamed('/first');
Navigator.of(context).pushNamed('/second');
Navigator.of(context).pushNamed('/third');
class NavigatorOne extends StatefulWidget {
@override
_NavigatorOneState createState() => _NavigatorOneState();
}
class _NavigatorOneState extends State<NavigatorOne> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: Container(
color: Colors.green,
child: RaisedButton(child: Text(' one 1'),onPressed: (){
Navigator.of(context).pushNamed('/second');
},),
),
);
}
}
और त्रुटि:
══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter (21786): The following assertion was thrown during a scheduler callback:
I/flutter (21786): There are multiple heroes that share the same tag within a subtree.
I/flutter (21786): Within each subtree for which heroes are to be animated (typically a PageRoute subtree), each Hero
I/flutter (21786): must have a unique non-null tag.
I/flutter (21786): In this case, multiple heroes had the following tag: <default FloatingActionButton tag>
मैं इसे कैसे हल करूं?