GestureDetector

main.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  void hello() {
    print('Hello World');
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('FlutterZero')),
        body: Center(
          child: GestureDetector(
            child: Icon(
              Icons.home,
              size: 100,
              color: Colors.blue,
            ),
            onTap: () => print('シングルクリック'),
            onDoubleTap: () => print('ダブルクリック'),
            onLongPress: () => print('ロングプレス'),
          ),
        ),
      ),
    );
  }
}