iOS 国际化

第一步进入项目 设置

project - info - localizations

创建strings文件

1.新建文件 （快捷键 command + N）

 ![图一.png](https://img.haomeiwen.com/i6693936/d148bf9b0fbb8ab8.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

命名为Localizable 注意此命名的名字在宏定义里用到

2. 点击文件，到右边侧栏点击localize...

   
   图二.png

相关方法

ChangeLanguage.h

#import <Foundation/Foundation.h>

#define LocalLanguageKey    @"LocalLanguageKey" //当前语言
#define LanguageChange      @"LanguageChange"

NS_ASSUME_NONNULL_BEGIN

@interface ChangeLanguage : 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

NS_ASSUME_NONNULL_END

ChangeLanguage.m

#import "ChangeLanguage.h"

@implementation ChangeLanguage

static NSBundle *bundle = nil;

+ (NSBundle * )bundle{
    
    return bundle;
}
//首次加载的时候先检测语言是否存在 注意：此方法暂时适用于英语 和 简体中文

+ (void)initUserLanguage{
    
    NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
    
    NSString *currLanguage = [def valueForKey:LocalLanguageKey];
    
    if(!currLanguage){
//        首次获取设备支持语言
        NSArray *preferredLanguages = [NSLocale preferredLanguages];
        currLanguage = preferredLanguages[0];
        if ([currLanguage hasPrefix:@"zh"]) {
            [self putDefaults:LanguageChange Value:@"简体中文"];
            currLanguage = @"zh-Hans";
        }else{
            [self putDefaults:LanguageChange Value:@"English"];
            currLanguage = @"en";
        }
        //存储初始化语言
        [def setValue:currLanguage forKey:LocalLanguageKey];
        [def synchronize];
        
    }else{
        if ([currLanguage hasPrefix:@"en"]) {
            [self putDefaults:LanguageChange Value:@"English"];
            currLanguage = @"en";
        }else if ([currLanguage hasPrefix:@"zh"]) {
            [self putDefaults:LanguageChange Value:@"简体中文"];
            currLanguage = @"zh-Hans";
        }
        
    }
    
    //获取文件路径
    NSString *path = [[NSBundle mainBundle] pathForResource:currLanguage ofType:@"lproj"];
    bundle = [NSBundle bundleWithPath:path];//生成bundle
}

//获取当前语言
+ (NSString *)userLanguage{
    
    NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
    
    NSString *language = [def valueForKey:LocalLanguageKey];
    
    return language;
}
// 设置语言
+ (void)setUserlanguage:(NSString *)language{
    
    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
    NSString *currLanguage = [userDefaults valueForKey:LocalLanguageKey];
    
    if ([currLanguage isEqualToString:language]) {
        return;
    }
    [userDefaults setValue:language forKey:LocalLanguageKey];
    [userDefaults synchronize];
    
    NSString *path = [[NSBundle mainBundle] pathForResource:language ofType:@"lproj" ];
    bundle = [NSBundle bundleWithPath:path];
    
}

+ (void)putDefaults:(NSString *)key Value:(id)value{
    if (key!=NULL&&value!=NULL) {
        NSUserDefaults *userDefaults=[NSUserDefaults standardUserDefaults];
        [userDefaults setObject:value forKey:key];
        [userDefaults synchronize];//同步存储数据
        
    }
}
+ (id)getDefaults:(NSString *)key{
    NSUserDefaults *userDefaults=[NSUserDefaults standardUserDefaults];
    
    id obj;
    if (key!=NULL) {
        obj=[userDefaults objectForKey:key];
    }
    return obj;
}
@end

使用

宏定义

 //MARK:-- 国际化
#define LocalizationKey(key) [[ChangeLanguage bundle] localizedStringForKey:key value:nil table:@"Localizable"]

牛逼替换方法

//正则匹配中文
(@"[^"]*[\u4E00-\u9FA5]+[^"\n]*?")

image.png

参考资料

iOS 国际化