使用Flutter中的ToggleButton在两个有状态小部件之间切换，同时保持在同一位置

import 'package:flutter/material.dart';

class ToggleButtonExample extends StatefulWidget {
  @override
  _ToggleButtonExampleState createState() => _ToggleButtonExampleState();
}

class _ToggleButtonExampleState extends State<ToggleButtonExample> {
  bool _isToggled = false;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Toggle Button Example'),
      ),
      body: Center(
        child: ToggleButtons(
          children: <Widget>[
            Icon(Icons.favorite),
            Icon(Icons.favorite_border),
          ],
          isSelected: [_isToggled],
          onPressed: (index) {
            setState(() {
              _isToggled = !_isToggled;
            });
          },
        ),
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: ToggleButtonExample(),
  ));
}