初始化项目

lib/language/AppLanguage.dart

@@ -0,0 +1,63 @@
+import 'dart:convert';
+
+import 'package:ef/ef.dart';
+import 'package:flutter/services.dart';
+
+class AppLanguage extends Translations {
+  // 私有构造函数
+  AppLanguage._internal();
+
+  // 单例实例
+  static final AppLanguage _instance = AppLanguage._internal();
+
+  factory AppLanguage() => _instance;
+
+  // 缓存翻译数据
+  final Map<String, Map<String, String>> _localizedValues = {};
+
+  @override
+  Map<String, Map<String, String>> get keys => _localizedValues;
+
+  // 动态加载语言文件
+  Future<void> loadLanguage(String languageCode) async {
+    if (_localizedValues.containsKey(languageCode)) {
+      return; // 如果语言已经加载，无需重复加载
+    }
+
+    try {
+      // 加载 JSON 文件
+      final jsonString =
+          await rootBundle.loadString('assets/langs/$languageCode.json');
+      final Map<String, dynamic> jsonMap = json.decode(jsonString);
+
+      // 扁平化 JSON 数据并存储到缓存
+      _localizedValues[languageCode] = _flattenJson(jsonMap);
+
+      // 通知 GetX 更新 keys
+      // Get.forceAppUpdate();
+      Get.appendTranslations(keys);
+    } catch (e) {
+      print('Error loading $languageCode language file: $e');
+    }
+  }
+
+  // 扁平化嵌套 JSON 数据
+  Map<String, String> _flattenJson(Map<String, dynamic> json,
+      [String prefix = '']) {
+    final Map<String, String> flatMap = {};
+    json.forEach((key, value) {
+      final newKey = prefix.isEmpty ? key : '$prefix.$key';
+      if (value is Map<String, dynamic>) {
+        flatMap.addAll(_flattenJson(value, newKey));
+      } else {
+        flatMap[newKey] = value.toString();
+      }
+    });
+    return flatMap;
+  }
+
+  // 清理语言缓存
+  void clearLanguage(String languageCode) {
+    _localizedValues.remove(languageCode);
+  }
+}