ios NSLog 控制台 输出中文

在开发中，我们调试接口时最多的就是用NSLog 或者是打断点来po 数据，然而NSLog 输出的数据中，中文是UFT-8格式显示的，根本无法调试，所以为了解决这个问题，我在网上找了一些大神的做法，也尝试了几种方法，发现了一种比较好用的，今天就分享给大家。最终效果也很好

image.png

主要思路就是利用runtime 来替换掉系统的输出方法，然后将utf-8 转换成中文样式。

第一步就是要分别创建NSArry 和 NSDictionary的categogry

image.png

然后在.m文件中复制如下代码即可大功告成

代码如下

+ (void)load
{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        zx_swizzleSelector([self class], @selector(descriptionWithLocale:indent:), @selector(zx_descriptionWithLocale:indent:));
    });
}
- (NSString *)zx_descriptionWithLocale:(id)locale indent:(NSUInteger)level
{
    return [self stringByReplaceUnicode:[self zx_descriptionWithLocale:locale indent:level]];
}
- (NSString *)stringByReplaceUnicode:(NSString *)unicodeString
{
    NSMutableString *convertedString = [unicodeString mutableCopy];
    [convertedString replaceOccurrencesOfString:@"\\U" withString:@"\\u" options:0 range:NSMakeRange(0, convertedString.length)];
    CFStringRef transform = CFSTR("Any-Hex/Java");
    CFStringTransform((__bridge CFMutableStringRef)convertedString, NULL, transform, YES);
    
    return convertedString;
}
static inline void zx_swizzleSelector(Class theClass, SEL originalSelector, SEL swizzledSelector)
{
    Method originalMethod = class_getInstanceMethod(theClass, originalSelector);
    Method swizzledMethod = class_getInstanceMethod(theClass, swizzledSelector);
    
    BOOL didAddMethod =
    class_addMethod(theClass,
                    originalSelector,
                    method_getImplementation(swizzledMethod),
                    method_getTypeEncoding(swizzledMethod));
    
    if (didAddMethod) {
        class_replaceMethod(theClass,
                            swizzledSelector,
                            method_getImplementation(originalMethod),
                            method_getTypeEncoding(originalMethod));
    } else {
        method_exchangeImplementations(originalMethod, swizzledMethod);
    }
}

大功告成!