ios - JSON数组转成NSDictionary后，怎么办？

Question

我需要解析以下格式的 JSON 数组:

[
 {
  name: "10-701 machine learning",
  _id: "52537480b97d2d9117000001",
  __v: 0,
  ctime: "2013-10-08T02:57:04.977Z"
 },
 {
  name: "15-213 computer systems",
  _id: "525616b7807f01fa17000001",
  __v: 0,
  ctime: "2013-10-10T02:53:43.776Z"
 }
]

所以在获得 NSData 之后，我将其传输到 NSDictionary:

NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:&error];
NSLog(@"%@", dict);

但是从控制台看，我觉得字典其实是这样的:

(
        {
        "__v" = 0;
        "_id" = 52537480b97d2d9117000001;
        ctime = "2013-10-08T02:57:04.977Z";
        name = "10-701 machine learning";
    },
        {
        "__v" = 0;
        "_id" = 525616b7807f01fa17000001;
        ctime = "2013-10-10T02:53:43.776Z";
        name = "15-213 computer systems";
    }
)

外面那些括号是什么意思？我应该如何进一步将这个 NSDictionary 转移到一些 Course 对象的 NSArray 或 NSMutableArray(我自己定义的，尝试表示 JSON 数组的每个元素)？

Answer 1

使用此代码，

NSArray *array = [NSJSONSerialization JSONObjectWithData: responseData options:NSJSONReadingMutableContainers error:&error];
NSDictionary *dict = [array objectAtIndex:0];

然后您可以通过以下代码检索值，

NSString *v = [dict objectForKey:@"__v"];
NSString *id = [dict objectForKey:@"_id"];
NSString *ctime = [dict objectForKey:@"ctime"];
NSString *name = [dict objectForKey:@"name"];