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>
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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));
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