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：

//
//  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：

 

// ----- 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 ));