"MyApp widgets require a MediaQuery widget ancestor." Code Answer's

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MyApp widgets require a MediaQuery widget ancestor.

Lokesh003 on Mar 01, 2021

Its because, the showModalBottomSheet tries to access the ancestor of type 
MaterialApp from the given context.

Use Builder widget to get new context with MaterialApp ancestor or Separate 
your MaterialAapp and Scaffold widgets into separate widgets.

Using Builder :

floatingActionButton: Builder(
  builder: (context) => FloatingActionButton(
      child: Icon(Icons.add),
      onPressed: () { showModalBottomSheet(
          context: context,
          builder: (context) {
            return Text('Modal bottom sheet', style: TextStyle(fontSize: 30));
          });
      }
  ),
),
  
reference:
https://stackoverflow.com/questions/59864150/flutter-exception-caught-by-gesture-no-mediaquery-widget-found-inside-showmodal

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MyApp widgets require a MediaQuery widget ancestor. flutter widgets example tkinter widgets overview how to destroy all widgets in a frame void main() { testWidgets('Counter increments smoke test', (WidgetTester tester) async { // Build our app and trigger a frame. await tester.pumpWidget(MyApp()); How to delete Tkinter widgets from a window? accessing widgets in screen manager kivy ipywidgets hide widget flutter widgets example require('dotenv').config() typescript dotenv typescript flutter fab covers widget on keyboard open add bullet points in text widget flutter Require statement not part of import statement.eslint@typescript-eslint/no-var-requires Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i @types/node` and then add `node` to the types field in your tsconfig. Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i @types/node` and then add `node` to the types field in your tsconfig.

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MyApp widgets require a MediaQuery widget ancestor. No Material widget found. TextField widgets require a Material widget ancestor. void main() { testWidgets('Counter increments smoke test', (WidgetTester tester) async { // Build our app and trigger a frame. await tester.pumpWidget(MyApp()); How to delete Tkinter widgets from a window? how to destroy all widgets in a frame tkinter widgets overview flutter widgets example accessing widgets in screen manager kivy Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i @types/node` and then add `node` to the types field in your tsconfig. require('dotenv').config() typescript Require statement not part of import statement.eslint@typescript-eslint/no-var-requires add bullet points in text widget flutter flutter fab covers widget on keyboard open ipywidgets hide widget

"MyApp widgets require a MediaQuery widget ancestor." Code Answer's