语言切换

2026-05-27 09:36:56 +08:00
parent 298b06d456
commit ac906c901b
13 changed files with 120 additions and 77 deletions
--- a/app/src/main/java/com/example/defenseapplication/utils/ApiConfig.kt
+++ b/app/src/main/java/com/example/defenseapplication/utils/ApiConfig.kt
@@ -162,11 +162,10 @@ object ApiConfig {
    fun createHeadersInterceptor() = Interceptor { chain ->
        val requestBuilder = chain.request().newBuilder()
        val token = authToken
-        val langHeader = LanguageHeaderManager.getLanguageHeaderValue()
        
        // 添加必要的请求头
        requestBuilder.header("clientid", "428a8310cd442757ae699df5d894f051")
-        requestBuilder.header("content-language", langHeader)
+        requestBuilder.header("content-language", LanguageUtil.getLanguageHeaderValue())
        
        // 如果有 token，添加 Authorization 头
        if (token.isNotBlank()) {
--- a/app/src/main/java/com/example/defenseapplication/utils/LanguageHeaderManager.kt
+++ b/app/src/main/java/com/example/defenseapplication/utils/LanguageHeaderManager.kt
@@ -1,37 +1,13 @@
 package com.example.defenseapplication.utils

 import android.content.Context
-import androidx.core.content.edit
-
-enum class AppLanguage(val code: String) {
-    ENGLISH("en_US"),
-    SIMPLIFIED_CHINESE("zh_CN"),
-    TRADITIONAL_CHINESE("zh_TW")
-}

+/**
+ * HTTP 请求头的语言值管理，统一由 LanguageUtil 提供
+ * @deprecated Use LanguageUtil.getLanguageHeaderValue() directly
+ */
 object LanguageHeaderManager {
-    private const val PREF_NAME = "app_lang_pref"
-    private const val KEY_LANGUAGE = "selected_language"

-    private var currentLanguage: AppLanguage = AppLanguage.ENGLISH
-
-    fun init(context: Context) {
-        val prefs = context.getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE)
-        val langCode = prefs.getString(KEY_LANGUAGE, AppLanguage.ENGLISH.code)
-        currentLanguage = AppLanguage.values().find { it.code == langCode } ?: AppLanguage.ENGLISH
-    }
-
-    fun getCurrentLanguage(): AppLanguage = currentLanguage
-
-    fun switchLanguage(context: Context, language: AppLanguage) {
-        currentLanguage = language
-        // 持久化
-        context.getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE).edit {
-            putString(KEY_LANGUAGE, language.code)
-            apply()
-        }
-        // 可选：更新应用 Locale、重启 Activity 等
-    }
-
-    fun getLanguageHeaderValue(): String = currentLanguage.code
+    @Deprecated("Use LanguageUtil.getLanguageHeaderValue() instead", ReplaceWith("LanguageUtil.getLanguageHeaderValue()"))
+    fun getLanguageHeaderValue(): String = LanguageUtil.getLanguageHeaderValue()
 }
--- a/app/src/main/java/com/example/defenseapplication/utils/LanguageUtil.kt
+++ b/app/src/main/java/com/example/defenseapplication/utils/LanguageUtil.kt
@@ -3,77 +3,128 @@ package com.example.defenseapplication.utils
 import android.content.Context
 import android.content.SharedPreferences
 import android.content.res.Configuration
-import android.content.res.Resources
 import android.os.Build
 import android.os.LocaleList
 import java.util.Locale

+enum class AppLanguage(val code: String, val locale: Locale) {
+    ENGLISH("en_US", Locale.US),
+    SIMPLIFIED_CHINESE("zh_CN", Locale.SIMPLIFIED_CHINESE);
+
+    companion object {
+        fun fromCode(code: String): AppLanguage {
+            return values().find { it.code == code } ?: SIMPLIFIED_CHINESE
+        }
+    }
+}
+
 object LanguageUtil {

    private const val PREF_NAME = "language_pref"
    private const val KEY_LANGUAGE = "selected_language"

-    const val LANGUAGE_CHINESE = "zh"
-    const val LANGUAGE_ENGLISH = "en"
+    @JvmStatic
+    var currentLanguage: AppLanguage = AppLanguage.SIMPLIFIED_CHINESE
+        private set

    /**
-     * 切换语言
-     * @param context 上下文
-     * @param language 语言代码: "zh" 中文, "en" 英文
+     * 初始化语言，从持久化中恢复
+     */
+    fun init(context: Context) {
+        val prefs = context.getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE)
+        var code = prefs.getString(KEY_LANGUAGE, null)
+        if (code == null) {
+            // 兼容旧数据：尝试从 app_lang_pref 读取（LanguageHeaderManager 旧存储路径）
+            val oldPrefs = context.getSharedPreferences("app_lang_pref", Context.MODE_PRIVATE)
+            code = oldPrefs.getString("selected_language", AppLanguage.SIMPLIFIED_CHINESE.code)
+                ?: AppLanguage.SIMPLIFIED_CHINESE.code
+            // 迁移到新存储路径
+            prefs.edit().putString(KEY_LANGUAGE, code).apply()
+        }
+        currentLanguage = AppLanguage.fromCode(code)
+    }
+
+    /**
+     * 切换语言，同时更新 app locale 和 HTTP header
+     * @param language AppLanguage.ENGLISH 或 AppLanguage.SIMPLIFIED_CHINESE
+     */
+    fun switchLanguage(context: Context, language: AppLanguage) {
+        currentLanguage = language
+        saveLanguage(context, language.code)
+    }
+
+    /**
+     * 兼容旧代码：使用字符串 "zh" / "en" 切换
     */
    fun switchLanguage(context: Context, language: String) {
-        saveLanguage(context, language)
+        val appLang = when (language) {
+            "zh" -> AppLanguage.SIMPLIFIED_CHINESE
+            else -> AppLanguage.ENGLISH
+        }
+        switchLanguage(context, appLang)
    }

    /**
-     * 获取当前设置的语言
+     * 获取当前设置的语言代码 "zh" / "en"
     */
    fun getCurrentLanguage(context: Context): String {
-        val prefs = context.getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE)
-        return prefs.getString(KEY_LANGUAGE, LANGUAGE_CHINESE) ?: LANGUAGE_CHINESE
+        return currentLanguage.name.lowercase().let {
+            if (it.contains("chinese")) "zh" else "en"
+        }
    }

+    /**
+     * 获取 HTTP header 的语言值 "en_US" / "zh_CN"
+     */
+    fun getLanguageHeaderValue(): String = currentLanguage.code
+
    /**
     * 保存语言设置
     */
-    private fun saveLanguage(context: Context, language: String) {
+    private fun saveLanguage(context: Context, languageCode: String) {
        val prefs = context.getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE)
-        prefs.edit().putString(KEY_LANGUAGE, language).apply()
+        prefs.edit().putString(KEY_LANGUAGE, languageCode).apply()
    }

    /**
     * 判断当前是否是中文
     */
    fun isChinese(context: Context): Boolean {
-        return getCurrentLanguage(context) == LANGUAGE_CHINESE
+        return currentLanguage == AppLanguage.SIMPLIFIED_CHINESE
    }

    /**
-     * 获取本地化的 Context（用于在应用内切换语言）
-     * 在 attachBaseContext 中调用
+     * 获取本地化的 Context（在 attachBaseContext 中调用）
     */
    fun attachBaseContext(context: Context): Context {
-        val language = getCurrentLanguage(context)
-        return createLocalizedContext(context, language)
+        val locale = getSavedLocale(context)
+        return createLocalizedContext(context, locale)
+    }
+
+    /**
+     * 读取已保存的语言 locale（attachBaseContext 中使用，此时 currentLanguage 可能尚未初始化）
+     */
+    private fun getSavedLocale(context: Context): Locale {
+        val prefs = context.getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE)
+        val code = prefs.getString(KEY_LANGUAGE, AppLanguage.SIMPLIFIED_CHINESE.code)
+            ?: AppLanguage.SIMPLIFIED_CHINESE.code
+        return AppLanguage.fromCode(code).locale
    }

    /**
     * 创建本地化的 Context
     */
-    private fun createLocalizedContext(context: Context, language: String): Context {
-        val locale = Locale(language)
+    private fun createLocalizedContext(context: Context, locale: Locale): Context {
        Locale.setDefault(locale)

        val resources = context.resources
        val configuration = resources.configuration

        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-            // Android 7.0 及以上
            val localeList = LocaleList(locale)
            configuration.setLocales(localeList)
            context.createConfigurationContext(configuration)
        } else {
-            // Android 7.0 以下
            configuration.locale = locale
            resources.updateConfiguration(configuration, resources.displayMetrics)
            context
@@ -84,8 +135,7 @@ object LanguageUtil {
     * 更新应用语言（用于在 Activity 中动态切换）
     */
    fun updateResources(context: Context): Context {
-        val language = getCurrentLanguage(context)
-        val locale = Locale(language)
+        val locale = currentLanguage.locale
        Locale.setDefault(locale)

        val resources = context.resources
@@ -107,8 +157,8 @@ object LanguageUtil {
     */
    fun getLanguageDisplayName(language: String): String {
        return when (language) {
-            LANGUAGE_CHINESE -> "中文"
-            LANGUAGE_ENGLISH -> "English"
+            "zh" -> "中文"
+            "en" -> "English"
            else -> "中文"
        }
    }