字典转换成NSString(NSJson)
//字典转换成字符串
NSDictionary *dict = [NSMutableDictionary dictionary];
NSData *data = [NSJSONSerialization dataWithJSONObject:dict options:false error:nil];
NSString *name = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
将来的自己,会感谢现在不放弃的自己!