mirrored_repositories/just_launch/plugins/package_manager/example
import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:package_manager/package_manager.dart';
import 'package:package_manager/package_manager_platform_interface.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  List<InstalledApp> _platformVersion = [];
  final _packageManagerPlugin = PackageManager();

  @override
  void initState() {
    super.initState();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    List<InstalledApp> platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      platformVersion = await _packageManagerPlugin.getAllApps();
    } on PlatformException {
      platformVersion = [];
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
          appBar: AppBar(
            title: const Text('Plugin example app'),
          ),
          body: ListView.builder(
            itemBuilder: (context, i) {
              final name = _platformVersion[i].label;
              final package = _platformVersion[i].package;
              return ListTile(
                title: Text(name),
                subtitle: Text(package),
                onTap: () async {
                  await _packageManagerPlugin.launchApp(package);
                },
                onLongPress: () async {
                  await _packageManagerPlugin.launchSettings(package);
                },
              );
            },
            itemCount: _platformVersion.length,
          )),
    );
  }
}
