ios 应用内切换语言

1.首先添加需要支持的语言,默认支持英文,再添加中文即可

image.png

2.创建文件

image.png

如果只需要跟随系统语言切换,名字为Localizable,如果需要系统内切换,建议更改前其他名字.我刚开始使用Localizable,有问题.更换后暂时未发现问题.这里命名为Language.string

image.png

image.png

创建完成后,再勾选另外的语言,base暂时没发现有什么用

image.png

image.png

image.png

3,使用 我是使用单例管理语言 创建一个复制一下即可

//  FKChangeLanguageTool.h
//  unitTest
//
//  Created by 高飞林 on 2018/7/5.
//  Copyright © 2018年 高飞林. All rights reserved.
//

#import 

#define kChinese @"zh-Hans"
#define kEnglish @"en"

@interface FKChangeLanguageTool : NSObject

@property (nonatomic, strong) NSBundle *languageBundle;

+ (instancetype)shareTool;
- (void)changeLangueWithKey:(NSString *)key;

@end

#import "FKChangeLanguageTool.h"
#import "AppDelegate.h"

@implementation FKChangeLanguageTool

+ (instancetype)shareTool {
    static FKChangeLanguageTool *tool = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        tool = [[FKChangeLanguageTool alloc] init];
        [tool resetBundleNeedReload:NO];
    });
    return tool;
}

- (void)changeLangueWithKey:(NSString *)key {

    [[NSUserDefaults standardUserDefaults] setObject:key forKey:@"appLanguage"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [self resetBundleNeedReload:YES];
}

- (void)resetBundleNeedReload:(BOOL)reload {
    
    [NSThread sleepForTimeInterval:0.1];
    
    NSString *language = [[NSUserDefaults standardUserDefaults]objectForKey:@"appLanguage"];
    
    if (!language) {
        NSArray *languages = [NSLocale preferredLanguages];
        language = [languages objectAtIndex:0];
        
        if ([language hasPrefix:kChinese]) {
            //开头匹配
            [[NSUserDefaults standardUserDefaults] setObject:kChinese forKey:@"appLanguage"];
            language = kChinese;
        }else{
            [[NSUserDefaults standardUserDefaults] setObject:kEnglish forKey:@"appLanguage"];
            language = kEnglish;
        }
        [[NSUserDefaults standardUserDefaults] synchronize];
    }
    self.languageBundle = [NSBundle bundleWithPath:[[NSBundle mainBundle] pathForResource:language ofType:@"lproj"]];
    if (reload) {
//这是就是给window重新创建rootViewController,需要你们定义自己的方法
        AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
        [delegate setRoot];
    }
}
@end

具体使用

//创建宏
#define Localized(key) NSLocalizedStringFromTableInBundle(key, @"Language", [FKChangeLanguageTool shareTool].languageBundle, nil)
//使用
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(100, 100, 100, 30)];
    label.text = Localized(@"关注");
    [self.view addSubview:label];
//切换中文
[[FKChangeLanguageTool shareTool] changeLangueWithKey:kChinese];
//切换英文
[[FKChangeLanguageTool shareTool] changeLangueWithKey:kEnglish];

这样就可以实现app内切换语言了,踩过了不少坑.