添加多语言
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180
Shared/KBLocalizationManager.m
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180
Shared/KBLocalizationManager.m
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//
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// KBLocalizationManager.m
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// 多语言管理实现
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//
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#import "KBLocalizationManager.h"
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#import <Security/Security.h>
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#import "KBConfig.h"
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/// 语言变更通知名称
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NSString * const KBLocalizationDidChangeNotification = @"KBLocalizationDidChangeNotification";
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// 通过共享钥匙串跨 Target 持久化语言选择
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static NSString * const kKBLocService = @"com.keyBoardst.loc";
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static NSString * const kKBLocAccount = @"lang"; // 保存 UTF8 的语言代码
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@interface KBLocalizationManager ()
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@property (nonatomic, copy, readwrite) NSString *currentLanguageCode; // 当前语言代码
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@property (nonatomic, strong) NSBundle *langBundle; // 对应语言的 .lproj 资源包
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@end
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// 避免 +shared 初始化阶段递归触发自身：
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// 这里提供一个 C 级别的工具函数，构建钥匙串查询，不依赖实例或 +shared。
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static inline NSMutableDictionary *KBLocBaseKCQuery(void) {
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NSMutableDictionary *q = [@{ (__bridge id)kSecClass: (__bridge id)kSecClassGenericPassword,
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(__bridge id)kSecAttrService: kKBLocService,
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(__bridge id)kSecAttrAccount: kKBLocAccount } mutableCopy];
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if (KB_KEYCHAIN_ACCESS_GROUP.length > 0) {
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q[(__bridge id)kSecAttrAccessGroup] = KB_KEYCHAIN_ACCESS_GROUP;
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}
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return q;
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}
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@implementation KBLocalizationManager
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+ (instancetype)shared {
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static KBLocalizationManager *m; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{
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m = [KBLocalizationManager new];
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// 默认支持语言；可在启动时由外部重置
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m.supportedLanguageCodes = @[ @"en", @"zh-Hans" ];
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// 启动读取：先取共享钥匙串，再按系统偏好回退
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NSString *saved = [[self class] kc_read];
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if (saved.length == 0) {
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saved = [m bestSupportedLanguageForPreferred:[NSLocale preferredLanguages]] ?: @"en";
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}
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[m applyLanguage:saved];
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});
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return m;
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}
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#pragma mark - 对外 API
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- (void)setSupportedLanguageCodes:(NSArray<NSString *> *)supportedLanguageCodes {
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// 归一化：去重、去空
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NSMutableOrderedSet *set = [NSMutableOrderedSet orderedSet];
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for (NSString *c in supportedLanguageCodes) {
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if (c.length) { [set addObject:c]; }
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}
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_supportedLanguageCodes = set.array.count ? set.array : @[ @"en" ];
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// 若当前语言不再受支持，则按最佳匹配切回（不持久化，仅内存），并广播变更
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if (self.currentLanguageCode.length && ![set containsObject:self.currentLanguageCode]) {
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NSString *best = [self bestSupportedLanguageForPreferred:@[self.currentLanguageCode]];
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[self applyLanguage:best ?: _supportedLanguageCodes.firstObject];
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[[NSNotificationCenter defaultCenter] postNotificationName:KBLocalizationDidChangeNotification object:nil];
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}
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}
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- (void)setCurrentLanguageCode:(NSString *)code persist:(BOOL)persist {
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if (code.length == 0) return; // 忽略空值
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if ([code isEqualToString:self.currentLanguageCode]) return; // 无变更
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[self applyLanguage:code];
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if (persist) { [[self class] kc_write:code]; } // 需同步到 App/扩展
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[[NSNotificationCenter defaultCenter] postNotificationName:KBLocalizationDidChangeNotification object:nil];
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}
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- (void)resetToSystemLanguage {
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NSString *best = [self bestSupportedLanguageForPreferred:[NSLocale preferredLanguages]] ?: @"en";
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[self setCurrentLanguageCode:best persist:NO];
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}
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- (NSString *)localizedStringForKey:(NSString *)key {
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return [self localizedStringForKey:key table:nil value:key];
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}
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- (NSString *)localizedStringForKey:(NSString *)key table:(NSString *)table value:(NSString *)value {
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if (key.length == 0) return @"";
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NSBundle *bundle = self.langBundle ?: NSBundle.mainBundle;
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NSString *tbl = table ?: @"Localizable";
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// 使用 bundle API，避免 NSLocalizedString 被系统语言钉死
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NSString *str = [bundle localizedStringForKey:key value:value table:tbl];
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return str ?: (value ?: key);
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}
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- (NSString *)bestSupportedLanguageForPreferred:(NSArray<NSString *> *)preferred {
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if (self.supportedLanguageCodes.count == 0) return @"en";
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// 1) 完全匹配
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for (NSString *p in preferred) {
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NSString *pLC = p.lowercaseString;
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for (NSString *s in self.supportedLanguageCodes) {
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if ([pLC isEqualToString:s.lowercaseString]) { return s; }
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}
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}
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// 2) 前缀匹配：如 zh-Hans-CN -> zh-Hans, en-GB -> en
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for (NSString *p in preferred) {
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NSString *pLC = p.lowercaseString;
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for (NSString *s in self.supportedLanguageCodes) {
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NSString *sLC = s.lowercaseString;
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if ([pLC hasPrefix:[sLC stringByAppendingString:@"-"]] || [pLC hasPrefix:[sLC stringByAppendingString:@"_"]]) {
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return s;
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}
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// also allow reverse: when supported is regional (rare)
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if ([sLC hasPrefix:[pLC stringByAppendingString:@"-"]] || [sLC hasPrefix:[pLC stringByAppendingString:@"_"]]) {
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return s;
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}
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}
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}
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// 3) 特殊处理中文：将 zh-Hant/zh-TW/zh-HK 映射到 zh-Hant（若受支持）
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for (NSString *p in preferred) {
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NSString *pLC = p.lowercaseString;
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if ([pLC hasPrefix:@"zh-hant"] || [pLC hasPrefix:@"zh-tw"] || [pLC hasPrefix:@"zh-hk"]) {
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for (NSString *s in self.supportedLanguageCodes) {
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if ([s.lowercaseString isEqualToString:@"zh-hant"]) { return s; }
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}
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}
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if ([pLC hasPrefix:@"zh-hans"] || [pLC hasPrefix:@"zh-cn"]) {
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for (NSString *s in self.supportedLanguageCodes) {
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if ([s.lowercaseString isEqualToString:@"zh-hans"]) { return s; }
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}
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}
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}
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// 4) 兜底：取第一个受支持语言
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return self.supportedLanguageCodes.firstObject ?: @"en";
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}
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#pragma mark - 内部实现
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- (void)applyLanguage:(NSString *)code {
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_currentLanguageCode = [code copy];
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// 基于当前 Target（App 或扩展）的主 bundle 加载 .lproj 资源
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NSString *path = [NSBundle.mainBundle pathForResource:code ofType:@"lproj"];
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if (!path) {
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// 尝试去区域后缀：如 en-GB -> en
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NSString *shortCode = [[code componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"-_"]] firstObject];
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if (shortCode.length > 0) {
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path = [NSBundle.mainBundle pathForResource:shortCode ofType:@"lproj"];
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}
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}
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if (path) {
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self.langBundle = [NSBundle bundleWithPath:path];
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} else {
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self.langBundle = NSBundle.mainBundle; // 兜底
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}
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}
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#pragma mark - 钥匙串读写（App/扩展共享）
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+ (BOOL)kc_write:(NSString *)lang {
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NSMutableDictionary *q = KBLocBaseKCQuery();
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SecItemDelete((__bridge CFDictionaryRef)q);
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if (lang.length == 0) return YES; // 等价于删除
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NSData *data = [lang dataUsingEncoding:NSUTF8StringEncoding];
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q[(__bridge id)kSecValueData] = data ?: [NSData data];
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q[(__bridge id)kSecAttrAccessible] = (__bridge id)kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly;
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OSStatus st = SecItemAdd((__bridge CFDictionaryRef)q, NULL);
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return (st == errSecSuccess);
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}
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+ (NSString *)kc_read {
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NSMutableDictionary *q = KBLocBaseKCQuery();
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q[(__bridge id)kSecReturnData] = @YES;
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q[(__bridge id)kSecMatchLimit] = (__bridge id)kSecMatchLimitOne;
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CFTypeRef dataRef = NULL; OSStatus st = SecItemCopyMatching((__bridge CFDictionaryRef)q, &dataRef);
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if (st != errSecSuccess || !dataRef) return nil;
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NSData *data = (__bridge_transfer NSData *)dataRef;
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if (data.length == 0) return nil;
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NSString *lang = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
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return lang;
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}
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@end
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