NSDictionary从一个密钥到多个

Question

我得到了NSDictionary

Printing description of gameDict:
{
    result =     {
        developer = "Bethesda Game Studios";
        genre = "Role-Playing";
        name = "The Elder Scrolls V: Skyrim";
        platform = "PlayStation 3";
        publisher = "Bethesda Softworks";
        rating = M;
        rlsdate = "2011-11-11";
        score = 92;
        summary = "The next chapter in the Elder Scrolls saga arrives from the Bethesda Game Studios. Skyrim reimagines the open-world fantasy epic, bringing to life a complete virtual world open for you to explore any way you choose. Play any type of character you can imagine, and do whatever you want; the legendary freedom of choice, storytelling, and adventure of The Elder Scrolls is realized like never before. Skyrim's new game engine brings to life a complete virtual world with rolling clouds, rugged mountains, bustling cities, lush fields, and ancient dungeons. Choose from hundreds of weapons, spells, and abilities. The new character system allows you to play any way you want and define yourself through your actions. Battle ancient dragons like you've never seen. As Dragonborn, learn their secrets and harness their power for yourself.";
        thumbnail = "http://static.metacritic.com/images/products/games/6/372529409ea6cc3faadf5674fd96ba2a-98.jpg";
        url = "http://www.metacritic.com/game/playstation-3/the-elder-scrolls-v-skyrim";
        userscore = "6.3";
    };
}

它只有一个键“结果”，我怎么能得到其他的钥匙？

Answer 1

gameDict是一个只有一个键/对的NSDictionary。键“结果”指向另一个NSDictionary，它有更多的键。因此，要访问任何更深的键，您可以内联地这样做：

NSNumber *score = gameDict[@"result"][@"score"];

或者你可以拿出字典来查询它

NSDictionary *resultDict = gameDict[@"result"];
NSNumber *score = resultDict[@"score"];