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+/// MARK: - DDYAuthManager 2018/10/30
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+/// !!!: Author: 豆电雨
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+/// !!!: QQ/WX: 634778311
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+/// !!!: Github: https://github.com/RainOpen/
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+/// !!!: Blog: https://juejin.im/user/57dddcd8128fe10064cadee9
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+/// MARK: - DDYLanguageTool.M
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+
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+#import "DDYLanguageTool.h"
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+#import <UIKit/UIKit.h>
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+#import <objc/runtime.h>
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+
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+#define DDYLanguages @"DDYLanguages"
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+
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+NSString *const DDY_ZHS = @"zh-Hans";
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+NSString *const DDY_EN = @"en";
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+NSString *const DDY_ZHT = @"zh-Hant";
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+NSString *const DDY_JA = @"ja";
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+NSString *const DDY_FR = @"fr";
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+NSString *const DDY_DE = @"de";
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+NSString *const DDY_KO = @"ko";
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+
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+NSErrorDomain DDYLanguageErrorDomain = @"DDYLanguageErrorDomain";
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+
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+static inline void ddy_Swizzle(Class class, SEL originalSelector, SEL swizzledSelector) {
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+ Method originalMethod = class_getInstanceMethod(class, originalSelector);
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+ Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector);
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+ if (class_addMethod(class, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod))) {
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+ class_replaceMethod(class, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod));
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+ } else {
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+ method_exchangeImplementations(originalMethod, swizzledMethod);
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+ }
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+}
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+
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+@implementation NSBundle (DDYLanguage)
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+
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++ (void)load {
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+ static dispatch_once_t onceToken;
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+ dispatch_once(&onceToken, ^{
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+ ddy_Swizzle([self class], @selector(localizedStringForKey:value:table:), @selector(ddyLanguageLocalizedStringForKey:value:table:));
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+ ddy_Swizzle([self class], NSSelectorFromString(@"dealloc"), @selector(ddyLanguageDealloc));
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+ });
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+}
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+
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+- (NSString *)ddyLanguageLocalizedStringForKey:(NSString *)key value:(NSString *)value table:(NSString *)tableName {
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+ NSString *language = [[NSUserDefaults standardUserDefaults] objectForKey:DDYLanguages];
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+ // 可以加更多条件，比如特定的key,value,tableName才进行交换，否则直接return原方法返回值([language isEqualToString:@"Localizable"])
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+ if (language && ![self.bundlePath hasSuffix:@".lproj"]) {
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+ NSBundle *languageBundle = [NSBundle bundleWithPath:[[NSBundle mainBundle] pathForResource:language ofType:@"lproj"]];
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+ if (languageBundle) {
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+ return [languageBundle ddyLanguageLocalizedStringForKey:key value:value table:tableName];
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+ }
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+ }
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+ return [self ddyLanguageLocalizedStringForKey:key value:value table:tableName];
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+}
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+
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+- (void)ddyLanguageDealloc {
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+ objc_removeAssociatedObjects(self);
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+ [self ddyLanguageDealloc];
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+}
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+
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+@end
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+
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+@implementation DDYLanguageTool
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+
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+// MARK: - 类方法
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+// MARK: 手机系统语言
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++ (NSString *)ddy_SystemLanguage {
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+ return [[NSLocale preferredLanguages] objectAtIndex:0];
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+}
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+
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+// MARK: App应用语言
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++ (NSString *)ddy_AppLanguage {
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+ return [[NSUserDefaults standardUserDefaults] objectForKey:DDYLanguages];
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+}
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+
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+// MARK: 设置语言 nil:跟随系统 language:相应语言
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++ (void)ddy_SetLanguage:(NSString *)language complete:(void (^)(NSError *))complete {
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+ NSError *languageError;
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+ if (language == nil || [language isEqualToString:@""]) {
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+ [[NSUserDefaults standardUserDefaults] removeObjectForKey:DDYLanguages];
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+ languageError = [NSError errorWithDomain:DDYLanguageErrorDomain code:kDDYLanguageErrorNil userInfo:@{@"reason":@"Remove language setting"}];
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+ } else {
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+ NSBundle *languageBundle = [NSBundle bundleWithPath:[[NSBundle mainBundle] pathForResource:language ofType:@"lproj"]];
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+ if (languageBundle) {
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+ [[NSUserDefaults standardUserDefaults] setObject:language forKey:DDYLanguages];
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+ languageError = [NSError errorWithDomain:DDYLanguageErrorDomain code:kDDYLanguageErrorSuccess userInfo:@{@"reason":@"Success"}];
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+ } else {
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+ languageError = [NSError errorWithDomain:DDYLanguageErrorDomain code:kDDYLanguageErrorUnsupport userInfo:@{@"reason":@"Unsupported language"}];
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+ }
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+ }
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+ [[NSUserDefaults standardUserDefaults] synchronize];
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+ if (complete) {
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+ dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
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+ complete(languageError);
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+ });
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+ }
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+}
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+
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+@end
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huangxiaodong