import 'package:flutter/material.dart';

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

class MyApp extends StatefulWidget {
  @override
  State createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  bool useSemanticsDebugger = false;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        showSemanticsDebugger: useSemanticsDebugger,
        theme: ThemeData(primaryColor: Colors.blue),
        home: Scaffold(
          appBar: AppBar(
            title: Text('GridView Semantics Test'),
          ),
          body: GridView.count(crossAxisCount: 4,
              children: _buildChildren(context)
          ),
        ));
  }

  List<Widget> _buildChildren(BuildContext context) {
    final widgets = List<Widget>();
    for(int i = 0; i < 100; ++i) {
      widgets.add(ListTile(
        title: Text('Cell $i'),
      ));
    }
    return widgets;
  }
}