ios - 如何从 NSDictionary 中删除空值

Question

我有一个 JSON 提要:

{
    "count1" = 2;
    "count2" = 2;
    idval = 40;
    level = "<null>";
    "logo_url" = "/assets/logos/default_logo_medium.png";
    name = "Golf Club";
    "role_in_club" = Admin;
}

问题是 "<null>" .在将它保存到 NSUserDefaults 之前，我不知道如何将它从 NSDictionary 中删除。

Answer 1

另一种变体，没有(明确的)循环:

NSMutableDictionary *dict = [yourDictionary mutableCopy];
NSArray *keysForNullValues = [dict allKeysForObject:[NSNull null]];
[dict removeObjectsForKeys:keysForNullValues];