app-starlock/lib/tools/app_manager.dart

import 'package:package_info_plus/package_info_plus.dart';

class AppManager {

  String appName = '';
  String packageName = '';
  String version = '';
  String buildNumber = '';
  String platformName = '';
  String get showVersion =>'$version.$buildNumber';

  static AppManager? _manager;
  AppManager._init();

  static AppManager? shareManager(){
    _manager ??=  AppManager._init();
    return _manager;
  }

  factory AppManager() => shareManager()!;
  AppManager? get manager => shareManager();

  //当前应用的语言
  String _languageCode = 'en-US';
  void setLanCode({String? code})=>_languageCode = code!;
  String get languageCode => _languageCode;

  //设备唯一标识
  String _deviceID = '';
  void saveDeviceID(String id){
    _deviceID = id;
  }

  Future<void> initPackageInfo() async {
    PackageInfo packageInfo = await PackageInfo.fromPlatform();
    AppManager().appName = packageInfo.appName;
    AppManager().packageName = packageInfo.packageName;
    AppManager().version = packageInfo.version;
    AppManager().buildNumber = packageInfo.buildNumber;
  }

  String get deviceId =>_deviceID;

}