iOS－实现多语言

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：

//

//  GDLocalizableController.h

//  guide-book

//

#import

@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

//

#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

5. 自定义一个宏方便处理：

// ----- 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：

[GDLocalizableController setUserlanguage:CHINESE];

NSLog(GDLocalizedString(@SUBMIT_BTN_TITLE));

[GDLocalizableController setUserlanguage:ENGLISH];

NSLog(GDLocalizedString(@SUBMIT_BTN_TITLE));