Internationalization of the switch display language in IOS development Xcode

1. In project settings, add Chinese and English to two languages:

2. New Localizable.strings file, as a multilingual dictionary, store multiple languages, click on the right localization, check the English:

3. Add a field,

In 中文版, add: Submit_btn_title = Go;

In Chinese, add: submit_btn_title = start;

4. A tool class Gdlocalizablecontroller, used to switch local languages:

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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 GDLocalizableControllerstatic 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. Customize a macro for easy handling:

1234	// ----- 多语言设置#define CHINESE @zh-Hans#define ENGLISH @en#define GDLocalizedString(key) [[GDLocalizableController bundle] localizedStringForKey:(key) value:@ table:nil]

6. Use:

1234	[GDLocalizableController setUserlanguage:CHINESE];NSLog(GDLocalizedString(@SUBMIT_BTN_TITLE));[GDLocalizableController setUserlanguage:ENGLISH];NSLog(GDLocalizedString(@SUBMIT_BTN_TITLE));

Internationalization of the switch display language in IOS development Xcode