switch切换 flutter button example

import 'package:flutter/material.dart';
void main() {
  runApp(MyApp());
}
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Home(),
    );
  }
}
class Home extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
  bool isSwitched = false;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.green,
        title: Text("Flutter Switch Example"),
      ),
      body: Center(
        child: Switch(
          value: isSwitched,
          onChanged: (value){
            setState(() {
              isSwitched=value;
              print(isSwitched);
            });
          },
          activeTrackColor: Colors.lightGreenAccent,
          activeColor: Colors.green,
        ),
      ),
    );
  }
}