iOS开发Xcode中切换显示语言实现国际化

1.在Project设置，添加中英两种语言：

 

 

2.新建Localizable.strings文件，作为多语言对应的词典，存储多种语言，点击右侧Localization，勾选中英：

 

3.添加一个字段，

 

在English中，添加：SUBMIT_BTN_TITLE = Go;

在Chinese中，添加：SUBMIT_BTN_TITLE = 开始;
 

4.一个工具类GDLocalizableController，用来切换本地语言：

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// //  GDLocalizableController.h //  guide-book // //  Created by why on 7/16/14. //  Copyright (c) 2014 why. All rights reserved. //   #import <foundation foundation.h="">   @interface GDLocalizableController : NSObject   +(NSBundle *)bundle;//获取当前资源文件   +(void)initUserLanguage;//初始化语言文件   +(NSString *)userLanguage;//获取应用当前语言   +(void)setUserlanguage:(NSString *)language;//设置当前语言   @end             // //  GDLocalizableController.m //  guide-book // //  Created by why on 7/16/14. //  Copyright (c) 2014 why. All rights reserved. //   #import GDLocalizableController.h   @implementation GDLocalizableController   static NSBundle *bundle = nil;   + ( NSBundle * )bundle{     return bundle; } +(void)initUserLanguage{           NSUserDefaults *def = [NSUserDefaults standardUserDefaults];     NSString *string = [def valueForKey:@userLanguage];     if(string.length == 0){         //获取系统当前语言版本         NSArray* languages = [def objectForKey:@AppleLanguages];         NSString *current = [languages objectAtIndex:0];         string = current;         [def setValue:current forKey:@userLanguage];         [def synchronize];//持久化，不加的话不会保存     }           //获取文件路径     NSString *path = [[NSBundle mainBundle] pathForResource:string ofType:@lproj];     bundle = [NSBundle bundleWithPath:path];//生成bundle }   +(NSString *)userLanguage{           NSUserDefaults *def = [NSUserDefaults standardUserDefaults];     NSString *language = [def valueForKey:@userLanguage];     return language; }   +(void)setUserlanguage:(NSString *)language{           NSUserDefaults *def = [NSUserDefaults standardUserDefaults];           //1.第一步改变bundle的值     NSString *path = [[NSBundle mainBundle] pathForResource:language ofType:@lproj ];     bundle = [NSBundle bundleWithPath:path];           //2.持久化     [def setValue:language forKey:@userLanguage];     [def synchronize]; }   @end</foundation>

5. 自定义一个宏方便处理：

 

 

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// ----- 多语言设置 #define CHINESE @zh-Hans #define ENGLISH @en #define GDLocalizedString(key) [[GDLocalizableController bundle] localizedStringForKey:(key) value:@ table:nil]

6.使用：

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[GDLocalizableController setUserlanguage:CHINESE]; NSLog(GDLocalizedString(@SUBMIT_BTN_TITLE)); [GDLocalizableController setUserlanguage:ENGLISH]; NSLog(GDLocalizedString(@SUBMIT_BTN_TITLE));