嵌套的 CupertinoButtons：父按钮的不必要突出显示答案

【问题标题】：Nested CupertinoButtons: unnecessary highlighting of the parent button嵌套的 CupertinoButtons：父按钮的不必要突出显示
【发布时间】：2022-07-06 14:09:03
【问题描述】：

考虑以下代码：

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        appBar: AppBar(
          title: const Text('My app'),
        ),
        body: Center(
          child: CupertinoButton(
            onPressed: () {},
            child: Container(
              height: 300,
              width: 300,
              color: Colors.red,
              child: Center(
                child: CupertinoButton(
                  onPressed: () {
                    debugPrint(
                        'Pressing this button shouldnt highlight the parent button');
                  },
                  child: Container(
                    width: 100,
                    height: 100,
                    color: Colors.green,
                  ),
                ),
              ),
            ),
          ),
        ), // This trailing comma makes auto-formatting nicer for build methods.
      ),
    );
  }
}

它产生以下输出：

基本上，点击子按钮（绿色）也会突出显示父按钮（红色）。

如何防止按下子按钮时父按钮高亮？

【问题讨论】：

标签： flutter

【解决方案1】：

您必须删除父库比蒂诺按钮

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        appBar: AppBar(
          title: const Text('My app'),
        ),
        body: Center(
          child: Container(
            height: 300,
            width: 300,
            color: Colors.red,
            child: Center(
              child: CupertinoButton(
                
                onPressed: () {
                  debugPrint(
                      'Pressing this button shouldnt highlight the parent button');
                },
                child: Container(
                  width: 100,
                  height: 100,
                  color: Colors.green,
                ),
              ),
            ),
          ),
        ), // This trailing comma makes auto-formatting nicer for build methods.
      ),
    );
  }
}

【讨论】：