一、在解析json数据的时候，得到的集合对象或者数组对象在用%@打印的时候回出现类似乱码的情况。如图：
在iOS中打印字典或者数组对象，系统会默认调用字典对象和数组对象的descriptionWithLocale:方法。所以解决方案就是增加在.m文件中重写了两个descriptionWithLocale:方法。以后用的时候直接将文件拖进项目。
//
// NSDictionary+Log.m
// 05-掌握-多值参数
//
// Created by xiaomage on 15/7/13.
// Copyright (c) 2015年 小码哥. All rights reserved.
// #import <Foundation/Foundation.h> @implementation NSDictionary (Log)
- (NSString *)descriptionWithLocale:(id)locale
{
NSMutableString *string = [NSMutableString string]; // 开头有个{
[string appendString:@"{\n"]; // 遍历所有的键值对
[self enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
[string appendFormat:@"\t%@", key];
[string appendString:@" : "];
[string appendFormat:@"%@,\n", obj];
}]; // 结尾有个}
[string appendString:@"}"]; // 查找最后一个逗号
NSRange range = [string rangeOfString:@"," options:NSBackwardsSearch];
if (range.location != NSNotFound)
[string deleteCharactersInRange:range]; return string;
}
@end @implementation NSArray (Log) - (NSString *)descriptionWithLocale:(id)locale
{
NSMutableString *string = [NSMutableString string]; // 开头有个[
[string appendString:@"[\n"]; // 遍历所有的元素
[self enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
[string appendFormat:@"\t%@,\n", obj];
}]; // 结尾有个]
[string appendString:@"]"]; // 查找最后一个逗号
NSRange range = [string rangeOfString:@"," options:NSBackwardsSearch];
if (range.location != NSNotFound)
[string deleteCharactersInRange:range]; return string;
} @end
- 效果图