ios - Json解析、字典值打印

Question

我想从格式如下的 JSON 数据中获取 whatsapp 号码

Json:"extra_values":"{\"whatsapp\":\"1234567890\",\"call\":\"+1234567890\"}"

    social_dict=[shop_info valueForKey:@"extra_values"];
    NSLog(@"%@",social_dict);//it_prints : {"whatsapp":"1234567890","call":"+1234567890"}


    NSLog(@"%@",[social_dict objectForKey:@"call"]);

    NSLog(@"%@",[social_dict objectForKey:@"whatsapp"]);

我在打印 whatsapp 值时遇到问题。

Error: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString objectForKey:]: unrecognized selector sent to instance 0x60400028bd10'

Answer 1

试试这个

NSString *social_str = [shop_info valueForKey:@"extra_values"];

NSError *jsonError;
NSData *objectData = [social_str dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary * social_dict = [NSJSONSerialization JSONObjectWithData:objectData
                                      options:NSJSONReadingMutableContainers 
                                        error:&jsonError];

您正在获取 extra_values 的 JSON 字符串，因此您必须通过此将其转换为 NSDictionary