iOS解决字典和数组中输出乱码的问题

给NSDictionary和NSArray添加一个分类，重写descriptionWithLocale方法，在该方法中拼接元素格式化输出。

//重写系统的方法控制输出 indent 缩进
 - (NSString *)descriptionWithLocale:(id)locale indent:(NSUInteger)level

代码@implementation NSDictionary (Log)

#ifdef DEBUG
//重写系统的方法控制输出 indent 缩进
- (NSString *)descriptionWithLocale:(id)locale indent:(NSUInteger)level
{
    NSMutableString *mStr = [NSMutableString string];
    NSMutableString *tabStr = [NSMutableString stringWithString:@""];
    for (int i = 0; i < level; i++) {
      [tabStr appendString:@"\t"];
    }
    [mStr appendString:@"{\n"];

    NSArray *allKey = self.allKeys;
    for (int i = 0; i < allKey.count; i++) {
        id value = self[allKey[i]];
        NSString *lastSymbol = (allKey.count == i + 1) ? @"":@",";
        if ([value respondsToSelector:@selector(descriptionWithLocale:indent:)]) {
            [mStr appendFormat:@"\t%@%@ = %@%@\n",tabStr,allKey[i],[value descriptionWithLocale:locale indent:level + 1],lastSymbol];
        } else {
            [mStr appendFormat:@"\t%@%@ = %@%@\n",tabStr,allKey[i],value,lastSymbol];
        }
    }
     [mStr appendFormat:@"%@}",tabStr];
   return mStr;
}
@end

@implementation NSArray (Log)
//重写系统的方法控制输出 indent 缩进
-(NSString *)descriptionWithLocale:(id)locale indent:    (NSUInteger)level
{
    NSMutableString *mStr = [NSMutableString string];
    NSMutableString *tabStr = [NSMutableString stringWithString:@""];
    for (int i = 0; i < level; i++) {
        [tabStr appendString:@"\t"];
    }
    [mStr appendString:@"[\n"];
    for (int i = 0; i < self.count; i++) {
        NSString *lastSymbol = (self.count == i + 1) ? @"":@",";
        id value = self[i];
        if ([value respondsToSelector:@selector(descriptionWithLocale:indent:)]) {
            [mStr appendFormat:@"\t%@%@%@\n",tabStr,[value descriptionWithLocale:locale indent:level + 1],lastSymbol];
        } else {
            [mStr appendFormat:@"\t%@%@%@\n",tabStr,value,lastSymbol];
        }
    }
    [mStr appendFormat:@"%@]",tabStr];
    return mStr;
}
#endif
@end

具体代码查看Github项目

Github地址:iOSMultiTechnology