import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      theme: new ThemeData(platform: TargetPlatform.android),
      home: new Scaffold(
        body: new GestureDetector(
          onTapDown: (TapDownDetails details) {
            print("tapped down button 1");
          },
          onTapUp: (TapUpDetails details) {
            print("tapped up button 1");
          },
          onTapCancel: () {
            print("tapped cancel button 1");
          },
          onTap: () {
            print("tapped button 1");
          },
          child: new Container(
            height: 400.0,
            width: 400.0,
            color: Colors.red,
            child: new Column(
              children: <Widget>[
                new GestureDetector(
                  onTapDown: (TapDownDetails details) {
                    print("tapped down button 2");
                  },
                  onTapUp: (TapUpDetails details) {
                    print("tapped up button 2");
                  },
                  onTapCancel: () {
                    print("tapped cancel button 2");
                  },
                  onTap: () {
                    print("tapped button 2");
                  },
                  child: Container(
                    height: 200.0,
                    width: 200.0,
                    color: Colors.blue,
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}