CODEWITHSUNDEEP
flutterdart
dipansh
dipansh

Reputation: 518

No MediaQuery widget ancestor found while using MediaQuery.of(context)

I am getting an error saying No MediaQuery widget ancestor found while using MediaQuery.of(context). Here is my code and I am using MediaQuery.of(context) inside a MaterialApp but it is still giving me errors. Can someone help?

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final mediaQuery = MediaQuery.of(context);

    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Responsive'),
        ),
        body: SingleChildScrollView(
          child: Column(
            children: [
              Container(
                color: Colors.red,
                height: mediaQuery.size.height,
              ),
              Container(
                color: Colors.amber,
                height: 200,
              ),
            ],
          ),
        ),
      ),
    );
  }
}

Error

error image

Upvotes: 1

Views: 791

Answers (2)

Tipu Sultan
Tipu Sultan

Reputation: 1865

You get this error because your MediaQuery is out of MaterialApp. Use material home as seperate Stateless of Statefull widget.

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final mediaQuery = MediaQuery.of(context);

    return MaterialApp(
      home: Home();
  }
}

class Home extends StatelessWidget {
  const Home({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final mediaQuery = MediaQuery.of(context);
    return Scaffold(
      appBar: AppBar(
        title: Text('Responsive'),
      ),
      body: SingleChildScrollView(
        child: Column(
          children: [
            Container(
              color: Colors.red,
              height: mediaQuery.size.height,
            ),
            Container(
              color: Colors.amber,
              height: 200,
            ),
          ],
        ),
      ),
    );
  }
}

Upvotes: 1

Muhammad Arbaz Zafar
Muhammad Arbaz Zafar

Reputation: 661

you need to use media Query like that

Size size = MediaQuery.of(context).size;

and where you want to use so like this according width or height

height: size.height*0.1,

Upvotes: 0

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