objective-c 解碼

//?這是?json?可以轉成?NSDictionary

//?先將字符串轉為?NSData

NSString?*str?=?@"\{\"status\":\"0\",\"info\":\"\u53c2\u6570\u9519\u8bef\uff01\"}";

NSData?*data?=?[str?dataUsingEncoding:NSUTF8StringEncoding];

//?轉為?NSDictionary

NSDictionary?*dir?=?[NSJSONSerialization?JSONObjectWithData:data?options:NSJSONReadingAllowFragments?error:nil];

//?info:參數錯誤！

NSLog(@"info:%@",[dir?objectForKey:@"info"]);