热使用flutter卸载用户设备上的应用程序，并知道用户是否单击了取消或确定

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Uninstall App',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: UninstallPage(),
    );
  }
}

class UninstallPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Uninstall App'),
      ),
      body: Center(
        child: RaisedButton(
          child: Text('Uninstall'),
          onPressed: () {
            showDialog(
              context: context,
              builder: (BuildContext context) {
                return AlertDialog(
                  title: Text('Confirmation'),
                  content: Text('Are you sure you want to uninstall this app?'),
                  actions: <Widget>[
                    FlatButton(
                      child: Text('Cancel'),
                      onPressed: () {
                        Navigator.of(context).pop();
                      },
                    ),
                    FlatButton(
                      child: Text('Uninstall'),
                      onPressed: () {
                        FlutterInstallApp.uninstallApp();
                        Navigator.of(context).pop();
                      },
                    ),
                  ],
                );
              },
            );
          },
        ),
      ),
    );
  }
}