Flutter应用管理插件apps_handler的使用

Flutter应用管理插件apps_handler的使用

插件介绍

apps_handler 是一个Flutter插件，用于获取安装在Android设备上的应用程序信息、监控应用程序的安装和卸载事件，并且可以启动应用程序。它支持获取详细的应用程序信息、检查特定应用程序是否已安装、打开应用程序设置等。

安装插件

首先，在你的pubspec.yaml文件中添加以下依赖项：

dependencies:
  apps_handler: ^latest_version

平台支持

• Android: 支持
• iOS: 不支持
• MacOS: 不支持
• Web: 不支持
• Linux: 不支持
• Windows: 不支持

必需权限

对于Android 11 (API level 30) 及以上版本，需要在AndroidManifest.xml中添加以下权限：

<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES" />
<uses-permission android:name="android.permission.REQUEST_DELETE_PACKAGES" />

<queries>
    <intent>
        <action android:name="android.intent.action.MAIN" />
    </intent>
</queries>

使用示例

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

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

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

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Apps Handler Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        useMaterial3: true,
      ),
      home: const MyHomePage(),
    );
  }
}

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

  [@override](/user/override)
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  List<AppInfo> _apps = [];
  bool _isLoading = false;
  String _lastEvent = 'No events yet';

  Future<void> _loadApps() async {
    setState(() {
      _isLoading = true;
    });

    try {
      final apps = await AppsHandler.getInstalledApps(
        includeSystemApps: true,
        includeAppIcons: true,
        onlyAppsWithLaunchIntent: true,
      );

      if (!mounted) return;
      setState(() {
        _apps = apps;
      });
    } catch (e) {
      if (!mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('Error loading apps: $e')),
      );
    } finally {
      if (mounted) {
        setState(() {
          _isLoading = false;
        });
      }
    }
  }

  void _listenToAppChanges() {
    AppsHandler.appChanges.listen((event) {
      setState(() {
        _lastEvent = 'App ${event.packageName} was ${event.event}';
      });
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Apps Handler'),
        actions: [
          IconButton(
            icon: const Icon(Icons.refresh),
            onPressed: _loadApps,
          ),
        ],
      ),
      body: Column(
        children: [
          // Last event display
          Container(
            padding: const EdgeInsets.all(8.0),
            color: Colors.grey[200],
            width: double.infinity,
            child: Text(
              _lastEvent,
              style: Theme.of(context).textTheme.bodyMedium,
            ),
          ),
          // Apps list
          Expanded(
            child: _isLoading
                ? const Center(child: CircularProgressIndicator())
                : ListView.builder(
                    itemCount: _apps.length,
                    itemBuilder: (context, index) {
                      final app = _apps[index];
                      return ListTile(
                        leading: app.appIcon != null
                            ? Image.memory(Uint8List.fromList(app.appIcon!))
                            : Icon(Icons.android),
                        title: Text(app.appName),
                        subtitle: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Text(app.packageName),
                            Text(
                                'Version: ${app.versionName ?? 'Unknown'} (${app.versionCode})'),
                            Text('Category: ${app.category}'),
                          ],
                        ),
                        isThreeLine: true,
                        trailing: Row(
                          mainAxisSize: MainAxisSize.min,
                          children: [
                            IconButton(
                              icon: const Icon(Icons.settings),
                              onPressed: () {
                                Navigator.pop(context);
                                _openAppSettings(app.packageName);
                              },
                              tooltip: 'Open Settings',
                            ),
                            IconButton(
                              icon: const Icon(Icons.delete),
                              onPressed: () {
                                showDialog(
                                  context: context,
                                  builder: (context) =&gt; AlertDialog(
                                    title: Text('Uninstall ${app.appName}?'),
                                    content: Text(
                                        'Are you sure you want to uninstall ${app.appName}?'),
                                    actions: TextButton(
                                      onPressed: () {
                                        Navigator.pop(context);
                                        _uninstallApp(app.packageName);
                                      },
                                      child: const Text('Uninstall'),
                                    ),
                                  ),
                                );
                              },
                              tooltip: 'Uninstall',
                            ),
                            IconButton(
                              icon: const Icon(Icons.launch),
                              onPressed: () {
                                Navigator.pop(context);
                                _openApp(app.packageName);
                              },
                              tooltip: 'Launch',
                            ),
                          ],
                        ),
                      );
                    },
                  ),
          ),
        ],
      ),
    );
  }
}