iOS项目快速国际化

录制的

代码

扩展
只需要在项目中导入Categories文件夹，就可以实现项目国际化了。
主要的方法：
扩展NSBundle

#import "NSBundle+I18N.h"
#import <objc/runtime.h>


static const NSString *bundleKey = @"bundleKey";

@interface BundleEx : NSBundle

@end

@implementation BundleEx

- (NSString *)localizedStringForKey:(NSString *)key value:(NSString *)value table:(NSString *)tableName {
    NSBundle *bundle = objc_getAssociatedObject(self, &bundleKey);
    return bundle ? [bundle localizedStringForKey:key value:value table:tableName] : [super localizedStringForKey:key value:value table:tableName];
}

@end


@implementation NSBundle (I18N)

+ (void)setMainBundelLanguage:(NSString *)language {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        object_setClass([NSBundle mainBundle], [BundleEx class]);
    });
    //设置关联
    objc_setAssociatedObject([NSBundle mainBundle], &bundleKey, language ? [NSBundle bundleWithPath:[[NSBundle mainBundle] pathForResource:language ofType:@"lproj"]] : nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

+ (NSBundle *)getCurrentMainBundel {
    NSString * currentLanguage = [[NSUserDefaults standardUserDefaults] objectForKey:@"AppleLanguages"][0];
    NSString *path = [[ NSBundle mainBundle ] pathForResource:currentLanguage ofType:@"lproj" ];
    NSBundle * current = [NSBundle bundleWithPath:path];
    return current;
}


@end

扩展UILable

#import "UILabel+I18N.h"
#import <objc/runtime.h>

@implementation UILabel (I18N)

+(void)load {
    SEL originalSelector = @selector(setText:);
    SEL swizzledSelector = @selector(swizzled_setText:);
    Method originMehtod = class_getInstanceMethod([self class], @selector(setText:));
    Method otherMehtod = class_getInstanceMethod([self class], @selector(swizzled_setText:));
    BOOL didAddMethod =
    class_addMethod(self,
                    originalSelector,
                    method_getImplementation(otherMehtod),
                    method_getTypeEncoding(otherMehtod));
    if (didAddMethod) {
        class_replaceMethod(self,
                            swizzledSelector,
                            method_getImplementation(originMehtod),
                            method_getTypeEncoding(originMehtod));
    }
    else {
        // 交换2个方法的实现
        method_exchangeImplementations(otherMehtod, originMehtod);
    }
}

- (void)swizzled_setText:(NSString *)string {
    [self swizzled_setText:NSLocalizedString(string, nil)];
}

@end

扩展UIImage

#import "UIImage+I18N.h"
#import <objc/runtime.h>

@implementation UIImage (I18N)

+(void)load {
    Method otherMehtod = class_getClassMethod(self, @selector(swizzled_imageNamed:));
    Method originMehtod = class_getClassMethod(self, @selector(imageNamed:));
    // 交换2个方法的实现
    method_exchangeImplementations(otherMehtod, originMehtod);
}

+ (UIImage *)swizzled_imageNamed:(NSString *)name {
    return [self swizzled_imageNamed:NSLocalizedString(name, nil)];
}

@end

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iOS项目快速国际化