Question 128029 in Android Studio Question posted in
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Android Studio – No MediaQuery widget ancestor found. Scaffold widgets require a MediaQuery widget ancestor

I am new to flutter, BUILT an app showing graphs in flutter. When i run the code a red screen is appearing showing the above error

No MediaQuery widget ancestor found. Scaffold widgets require a MediaQuery widget ancestor.

I have cleared all the errors except this one.

Full link of the code

link of screenshot error

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2

Answers


  1. 0

    Wrap your scaffold to MatertialApp or you can make a class and in that class call GraphScreen like this

       void main() => runApp(const MyApp());
 
  class MyApp extends StatelessWidget {      
    @override
    Widget build(BuildContext context) {
      return MaterialApp(
  
        title: 'Flutter Demo',
        theme: ThemeData(
          primarySwatch: Colors.blue,
        ),
        home: GraphScreen(),
  
      );
    }
  }
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  2. 0

    Check you main.dart, and in the MyApp (Or whatever you named it) class, you should wrap it with MaterialApp. It should fix the problem.

    class MyApp extends StatelessWidget  {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Graphn',
      home: GraphScreen(),
    );
  }
}
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