循环遍历 NSDictionary 以创建单独的 NSArray

我有一个大NSDictionary我需要循环并创建单独的NSArrays。以下是内容：

(
        {
        id =         {
            text = "";
        };
        sub =         {
            text = " , ";
        };
        text = "";
        "thumb_url" =         {
            text = "";
        };
        title =         {
            text = "2010-2011";
        };
        type =         {
            text = "title";
        };
    },
        {
        id =         {
            text = "76773";
        };
        sub =         {
            text = "December 13, 2010";
        };
        text = "";
        "thumb_url" =         {
            text = "http://www.puc.edu/__data/assets/image/0004/76774/varieties/thumb.jpg";
        };
        title =         {
            text = "College Days - Fall 2010";
        };
        type =         {
            text = "gallery";
        };
    },
        {
        id =         {
            text = "";
        };
        sub =         {
            text = "";
        };
        text = "";
        "thumb_url" =         {
            text = "";
        };
        title =         {
            text = "2009-2010";
        };
        type =         {
            text = "title";
        };
    },
        {
        id =         {
            text = "76302";
        };
        sub =         {
            text = "December 3, 2010";
        };
        text = "";
        "thumb_url" =         {
            text = "http://www.puc.edu/__data/assets/image/0019/76303/varieties/thumb.jpg";
        };
        title =         {
            text = "Christmas Colloquy";
        };
        type =         {
            text = "gallery";
        };
    }
)

每个部分都有一个类型键，我需要检查它。当它找到title关键，我需要将它们添加到数组中。然后接下来的部分将使用gallerykey 需要位于自己的数组中，直到找到另一个title钥匙。然后gallery之后的键放入自己的数组中。

我正在使用一个UITableView章节标题和内容。所以NSDictionary上面应该有一个NSArray *titles;数组，以及另外两个数组，每个数组包含标题后面的画廊。

我尝试过使用for循环但我似乎无法做到正确。任何想法，将不胜感激。

你的日志有点不清楚，但我猜你的NSDictionary的值为NSDictionary? If so:

NSMutableArray *titles = [NSMutableArray array];
// etc.

for (id key in sourceDictionary) {
  NSDictionary *subDictionary = [sourceDictionary objectForKey:key];
  if ([subDictionary objectForKey:@"type"] == @"title")
    [titles addObject:[subDictionary objectForKey:@"title"]];
  // etc.
}

你的问题有点不清楚......但这就是你正确循环的方式NSDictionary.

EDIT:

NSMutableDictionary *galleries = [NSMutableDictionary dictionary];
NSString *currentTitle;

for (id key in sourceDictionary) {
  NSDictionary *subDictionary = [sourceDictionary objectForKey:key];
  NSString *type = [subDictionary objectForKey:@"type"];
  if (type == @"title") {
    currentTitle = [subDictionary objectForKey:@"title"];
    if ([galleries objectForKey:currentTitle] == nil)
      [galleries setObject:[NSMutableArray array] forKey:currentTitle];
  } else if (type == @"gallery" && currentTitle != nil)
    [[galleries objectForKey:currentTitle] addObject:subDictionary];
}

在这个循环之后，galleries将包含类型的键NSString（带有标题的值）以及相应的类型对​​象NSArray（与画廊的价值观NSDictionarys）。希望这就是您想要的。