app_info_flutter 2.0.0

A Flutter plugin to retrieve basic app information like name, package name, version, build number, and other app metadata.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:convert';

import 'package:flutter/services.dart';
import 'package:app_info_flutter/app_info_flutter.dart';

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

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

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

class _MyAppState extends State<MyApp> {
  String _appName = 'Unknown';
  String _packageName = 'Unknown';
  String _version = 'Unknown';
  String _buildNumber = 'Unknown';
  String _buildType = 'Unknown';
  String _installerPackage = 'Unknown';
  String _firstInstallTime = 'Unknown';
  String _lastUpdateTime = 'Unknown';
  String _appSize = 'Unknown';
  String _cacheSize = 'Unknown';
  String _targetSdkVersion = 'Unknown';
  String _minSdkVersion = 'Unknown';
  List<String> _grantedPermissions = [];
  List<String> _declaredPermissions = [];

  // New features
  String _signature = 'Unknown';
  List<String> _signatures = [];
  String _isPhysicalDevice = 'Unknown';
  String _isStoreVersion = 'Unknown';
  String _apkSize = 'Unknown';
  AppInfoData? _consolidatedAppInfo;
  bool _isLoading = false;

  final _appInfoFlutterPlugin = AppInfoFlutter();
  final _scaffoldMessengerKey = GlobalKey<ScaffoldMessengerState>();

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

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    setState(() {
      _isLoading = true;
    });

    String appName;
    String packageName;
    String version;
    String buildNumber;
    String buildType;
    String installerPackage;
    String firstInstallTime;
    String lastUpdateTime;
    String appSize;
    String cacheSize;
    String targetSdkVersion;
    String minSdkVersion;
    List<String> grantedPermissions = [];
    List<String> declaredPermissions = [];

    // New features
    String signature;
    List<String> signatures = [];
    String isPhysicalDevice;
    String isStoreVersion;
    String apkSize;
    AppInfoData? consolidatedAppInfo;

    try {
      appName = await _appInfoFlutterPlugin.getAppName() ?? 'Unknown';
      packageName = await _appInfoFlutterPlugin.getPackageName() ?? 'Unknown';
      version = await _appInfoFlutterPlugin.getVersion() ?? 'Unknown';
      buildNumber = await _appInfoFlutterPlugin.getBuildNumber() ?? 'Unknown';

      final buildTypeEnum = await _appInfoFlutterPlugin.getBuildType();
      buildType = buildTypeEnum?.name.toUpperCase() ?? 'Unknown';

      installerPackage =
          await _appInfoFlutterPlugin.getInstallerPackageName() ?? 'Unknown';

      final firstInstall = await _appInfoFlutterPlugin.getFirstInstallTime();
      firstInstallTime = firstInstall != null
          ? firstInstall.toString()
          : 'Unknown';

      final lastUpdate = await _appInfoFlutterPlugin.getLastUpdateTime();
      lastUpdateTime = lastUpdate != null ? lastUpdate.toString() : 'Unknown';

      final size = await _appInfoFlutterPlugin.getAppSize() ?? 0;
      appSize = size > 0
          ? '${(size / 1024 / 1024).toStringAsFixed(2)} MB'
          : 'Unknown';

      final cache = await _appInfoFlutterPlugin.getCacheSize() ?? 0;
      cacheSize = cache > 0
          ? '${(cache / 1024 / 1024).toStringAsFixed(2)} MB'
          : '$cache Bytes';

      final targetSdk = await _appInfoFlutterPlugin.getTargetSdkVersion();
      targetSdkVersion = targetSdk?.toString() ?? 'Unknown';

      final minSdk = await _appInfoFlutterPlugin.getMinSdkVersion();
      minSdkVersion = minSdk?.toString() ?? 'Unknown';

      grantedPermissions =
          await _appInfoFlutterPlugin.getGrantedPermissions() ?? [];
      declaredPermissions =
          await _appInfoFlutterPlugin.getDeclaredPermissions() ?? [];

      // New features
      signature = await _appInfoFlutterPlugin.getSignature() ?? 'None';
      signatures = await _appInfoFlutterPlugin.getSignatures() ?? [];

      final physicalDev = await _appInfoFlutterPlugin.isPhysicalDevice();
      isPhysicalDevice = physicalDev != null
          ? physicalDev.toString().toUpperCase()
          : 'Unknown';

      final storeVersion = await _appInfoFlutterPlugin.isStoreVersion();
      isStoreVersion = storeVersion != null
          ? storeVersion.toString().toUpperCase()
          : 'Unknown';

      final sizeApk = await _appInfoFlutterPlugin.getApkSize() ?? 0;
      apkSize = sizeApk > 0
          ? '${(sizeApk / 1024 / 1024).toStringAsFixed(2)} MB'
          : 'Unknown';

      consolidatedAppInfo = await _appInfoFlutterPlugin.getAppInfo();
    } on PlatformException catch (e) {
      appName = 'Failed: ${e.message}';
      packageName = 'Failed';
      version = 'Failed';
      buildNumber = 'Failed';
      buildType = 'Failed';
      installerPackage = 'Failed';
      firstInstallTime = 'Failed';
      lastUpdateTime = 'Failed';
      appSize = 'Failed';
      cacheSize = 'Failed';
      targetSdkVersion = 'Failed';
      minSdkVersion = 'Failed';
      signature = 'Failed';
      signatures = [];
      isPhysicalDevice = 'Failed';
      isStoreVersion = 'Failed';
      apkSize = 'Failed';
      consolidatedAppInfo = null;
    }

    if (!mounted) return;

    setState(() {
      _appName = appName;
      _packageName = packageName;
      _version = version;
      _buildNumber = buildNumber;
      _buildType = buildType;
      _installerPackage = installerPackage;
      _firstInstallTime = firstInstallTime;
      _lastUpdateTime = lastUpdateTime;
      _appSize = appSize;
      _cacheSize = cacheSize;
      _targetSdkVersion = targetSdkVersion;
      _minSdkVersion = minSdkVersion;
      _grantedPermissions = grantedPermissions;
      _declaredPermissions = declaredPermissions;
      _signature = signature;
      _signatures = signatures;
      _isPhysicalDevice = isPhysicalDevice;
      _isStoreVersion = isStoreVersion;
      _apkSize = apkSize;
      _consolidatedAppInfo = consolidatedAppInfo;
      _isLoading = false;
    });
  }

  Future<void> _handleClearCache() async {
    final scaffoldMessenger = _scaffoldMessengerKey.currentState;
    if (scaffoldMessenger == null) return;
    try {
      final success = await _appInfoFlutterPlugin.clearCache();
      if (success) {
        scaffoldMessenger.showSnackBar(
          const SnackBar(content: Text('Cache cleared successfully!')),
        );
        await initPlatformState();
      } else {
        scaffoldMessenger.showSnackBar(
          const SnackBar(content: Text('Failed to clear cache.')),
        );
      }
    } catch (e) {
      scaffoldMessenger.showSnackBar(SnackBar(content: Text('Error: $e')));
    }
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      scaffoldMessengerKey: _scaffoldMessengerKey,
      theme: ThemeData(
        useMaterial3: true,
        colorScheme: ColorScheme.fromSeed(
          seedColor: Colors.deepPurple,
          brightness: Brightness.dark,
        ),
      ),
      home: Scaffold(
        appBar: AppBar(
          title: const Text('App Info Plugin Showcase'),
          actions: [
            IconButton(
              icon: _isLoading
                  ? const SizedBox(
                      width: 20,
                      height: 20,
                      child: CircularProgressIndicator(strokeWidth: 2),
                    )
                  : const Icon(Icons.refresh),
              onPressed: _isLoading ? null : initPlatformState,
            ),
          ],
        ),
        body: _isLoading
            ? const Center(child: CircularProgressIndicator())
            : SingleChildScrollView(
                child: Padding(
                  padding: const EdgeInsets.all(12.0),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.stretch,
                    children: [
                      _buildInfoCard(
                        title: 'Basic Info',
                        icon: Icons.info_outline,
                        children: [
                          _buildRow('App Name', _appName),
                          _buildRow('Package Name', _packageName),
                          _buildRow('Version', _version),
                          _buildRow('Build Number', _buildNumber),
                        ],
                      ),
                      const SizedBox(height: 12),
                      _buildInfoCard(
                        title: 'Device & Platform Info',
                        icon: Icons.phone_android,
                        children: [
                          _buildRow('Physical Device?', _isPhysicalDevice),
                          _buildRow('Store Version?', _isStoreVersion),
                          _buildRow('Installer Package', _installerPackage),
                          _buildRow('Build Type', _buildType),
                        ],
                      ),
                      const SizedBox(height: 12),
                      _buildInfoCard(
                        title: 'Storage Details',
                        icon: Icons.storage,
                        children: [
                          _buildRow('App Directory Size', _appSize),
                          _buildRow('APK File Size', _apkSize),
                          _buildRow('Cache Directory Size', _cacheSize),
                          const SizedBox(height: 8),
                          ElevatedButton.icon(
                            onPressed: _handleClearCache,
                            icon: const Icon(Icons.delete_sweep),
                            label: const Text('Clear Cache'),
                            style: ElevatedButton.styleFrom(
                              backgroundColor: Colors.redAccent.withValues(
                                alpha: 0.2,
                              ),
                              foregroundColor: Colors.redAccent,
                            ),
                          ),
                        ],
                      ),
                      const SizedBox(height: 12),
                      _buildInfoCard(
                        title: 'SDK & Installation Info',
                        icon: Icons.settings_applications,
                        children: [
                          _buildRow('Target SDK Version', _targetSdkVersion),
                          _buildRow('Min SDK Version', _minSdkVersion),
                          _buildRow('First Install Time', _firstInstallTime),
                          _buildRow('Last Update Time', _lastUpdateTime),
                        ],
                      ),
                      const SizedBox(height: 12),
                      _buildInfoCard(
                        title: 'Security Certificates (SHA-256)',
                        icon: Icons.security,
                        children: [
                          _buildRow('Primary Signature', _signature),
                          const SizedBox(height: 8),
                          const Text(
                            'All Signatures:',
                            style: TextStyle(fontWeight: FontWeight.bold),
                          ),
                          const SizedBox(height: 4),
                          ..._signatures.map(
                            (sig) => Padding(
                              padding: const EdgeInsets.only(
                                left: 8.0,
                                top: 4.0,
                              ),
                              child: Text(
                                sig,
                                style: const TextStyle(
                                  fontSize: 12,
                                  fontFamily: 'monospace',
                                ),
                              ),
                            ),
                          ),
                          if (_signatures.isEmpty) const Text('None'),
                        ],
                      ),
                      const SizedBox(height: 12),
                      _buildInfoCard(
                        title: 'Consolidated getAppInfo() Output',
                        icon: Icons.integration_instructions,
                        children: [
                          const Text(
                            'All metadata returned in a single method channel call:',
                            style: TextStyle(
                              fontStyle: FontStyle.italic,
                              fontSize: 13,
                            ),
                          ),
                          const SizedBox(height: 8),
                          Container(
                            padding: const EdgeInsets.all(8.0),
                            decoration: BoxDecoration(
                              color: Colors.black26,
                              borderRadius: BorderRadius.circular(6),
                            ),
                            child: Text(
                              _consolidatedAppInfo != null
                                  ? const JsonEncoder.withIndent(
                                      '  ',
                                    ).convert(_consolidatedAppInfo!.toMap())
                                  : 'No Consolidated Info Available',
                              style: const TextStyle(
                                fontSize: 12,
                                fontFamily: 'monospace',
                              ),
                            ),
                          ),
                        ],
                      ),
                      const SizedBox(height: 12),
                      _buildInfoCard(
                        title: 'Permissions',
                        icon: Icons.vpn_key,
                        children: [
                          const Text(
                            'Granted:',
                            style: TextStyle(fontWeight: FontWeight.bold),
                          ),
                          const SizedBox(height: 4),
                          ..._grantedPermissions.map((p) => Text('• $p')),
                          if (_grantedPermissions.isEmpty) const Text('None'),
                          const SizedBox(height: 12),
                          const Text(
                            'Declared in Manifest:',
                            style: TextStyle(fontWeight: FontWeight.bold),
                          ),
                          const SizedBox(height: 4),
                          ..._declaredPermissions.map((p) => Text('• $p')),
                          if (_declaredPermissions.isEmpty) const Text('None'),
                        ],
                      ),
                    ],
                  ),
                ),
              ),
      ),
    );
  }

  Widget _buildInfoCard({
    required String title,
    required IconData icon,
    required List<Widget> children,
  }) {
    return Card(
      elevation: 2,
      child: Padding(
        padding: const EdgeInsets.all(12.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            Row(
              children: [
                Icon(icon, color: Colors.deepPurpleAccent),
                const SizedBox(width: 8),
                Text(
                  title,
                  style: const TextStyle(
                    fontSize: 16,
                    fontWeight: FontWeight.bold,
                  ),
                ),
              ],
            ),
            const Divider(),
            const SizedBox(height: 4),
            ...children,
          ],
        ),
      ),
    );
  }

  Widget _buildRow(String label, String value) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 4.0),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Expanded(
            flex: 2,
            child: Text(
              label,
              style: const TextStyle(fontWeight: FontWeight.w600),
            ),
          ),
          Expanded(
            flex: 3,
            child: Text(
              value,
              textAlign: TextAlign.right,
              style: const TextStyle(color: Colors.white70),
            ),
          ),
        ],
      ),
    );
  }
}