ios - 在IOS中按顺序解析JSON

Question

我一直在努力尝试在 IOS5 中按顺序解析我的 JSON。它是从服务器按顺序发送的，所以我知道不是这样的。这是我的代码:

NSArray *userData = [update JSONValue];
NSLog(@"USERDATA%@", userData);
NSEnumerator *enumerator = [userData objectEnumerator];
id key;
while (key = [enumerator nextObject]) {
    NSDictionary *value = key;
    NSString *comment = [value objectForKey:@"comment"];
    NSLog(@"USERCOMMENT %@", comment);
}

第一个NSLog，一切看起来都很漂亮。第二个 NSLog 给我的一切都乱了。我已经无计可施了。

第一个 NSLOG:

USERDATA{
    1 =     {
        comment = "Test 6";
        photoID = 1;
        postedDate = "2 days ago";
        userID = 17;
        userPic = "members/0/image01.png";
        username = kismet;
    };
    2 =     {
        comment = "Test 5";
        photoID = 1;
        postedDate = "2 days ago";
        userID = 17;
        userPic = "members/0/image01.png";
        username = kismet;
    };
    3 =     {
        comment = "Test 4";
        photoID = 1;
        postedDate = "2 days ago";
        userID = 17;
        userPic = "members/0/image01.png";
        username = kismet;
    };
    4 =     {
        comment = "Test 3";
        photoID = 1;
        postedDate = "2 days ago";
        userID = 17;
        userPic = "members/0/image01.png";
        username = kismet;
    };
    5 =     {
        comment = "Test 2";
        photoID = 1;
        postedDate = "2 days ago";
        userID = 17;
        userPic = "members/0/image01.png";
        username = kismet;
    };
    6 =     {
        comment = "Test 1";
        photoID = 1;
        postedDate = "2 days ago";
        userID = 17;
        userPic = "members/0/image01.png";
        username = kismet;
    };
}

第二个 NSLog:

USERCOMMENT Test 4
USERCOMMENT Test 6
USERCOMMENT Test 1
USERCOMMENT Test 3
USERCOMMENT Test 5
USERCOMMENT Test 2

Answer 1

问题是你的顶级对象不是 NSArray，而是 NSDictionary。如果您发回一个数组，它将正常工作。另一种方法是获取顶级字典的键并在迭代之前对它们进行排序。