Flutter如何检测指针沿多个容器滑动

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('GestureDetector Demo'),
        ),
        body: Center(
          child: Row(
            children: [
              Container(
                width: 100,
                height: 100,
                color: Colors.red,
              ),
              Container(
                width: 100,
                height: 100,
                color: Colors.green,
              ),
              Container(
                width: 100,
                height: 100,
                color: Colors.blue,
              ),
            ],
          ),
        ),
      ),
    );
  }
}

class MyGestureDetector extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return GestureDetector(
      onPanUpdate: (details) {
        if (details.delta.dx > 0) {
          // 用户向右滑动
          print('向右滑动');
        } else if (details.delta.dx < 0) {
          // 用户向左滑动
          print('向左滑动');
        }
      },
      child: Container(
        width: 100,
        height: 100,
        color: Colors.red,
      ),
    );
  }
}