Flutter Web：如何修复 SelectableText 对齐？答案

【问题标题】：Flutter Web: How to fix SelectableText alignment?Flutter Web：如何修复 SelectableText 对齐？
【发布时间】：2020-04-08 17:02:41
【问题描述】：

我在Row 中有一个SelectableText 和Icon，但SelectableText 似乎没有正确对齐。

现在看起来像这样，

预期结果：

这是我正在使用的代码，

        Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Icon(FontAwesomeIcons.whatsapp),
            const Padding(padding: EdgeInsets.only(left: 8)),
            SelectableText(
              '+91-8**2**8**5',
              textAlign: TextAlign.center,
              style: Theme.of(context).textTheme.title,
            )
          ],
        ),

PS：它适用于 Text，但我想要 SelectableText。

【问题讨论】：

标签： flutter flutter-layout flutter-web

【解决方案1】：

问题网络上的可选文本小部件被剪掉了一半 https://github.com/flutter/flutter/issues/40663 已解决。
请升级到最新版本
附上我的完整测试代码和结果

完整的测试代码

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

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(        
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {      
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {   
    return Scaffold(
      appBar: AppBar(        
        title: Text(widget.title),
      ),
      body: Center(        
        child: Column(          
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                const Icon(FontAwesomeIcons.whatsapp),
                const Padding(padding: EdgeInsets.only(left: 8)),
                SelectableText(
                  '+91-8**2**8**5',
                  textAlign: TextAlign.center,
                  style: Theme.of(context).textTheme.title,
                )
              ],
            ),
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.display1,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ), 
    );
  }
}

【讨论】：

我到底怎么想不通！实际上我切换到主频道它下载了一些东西，我以为我正在运行最新版本。非常感谢。