从 NSDictionary 保存数据到 NSDictionary

Question

这是我已解析并保存在名为 NSDictionary *dic 的字典中的 JSON 格式数据。我有另一个名为 dic1 的 NSDicitonary，我只想将数据从 //1 存储到 //3 我该怎么做那？请帮忙？

//0
[{
    "about": "Mother, actor, entrepreneur, fitness enthusiast and an eternal positive thinker",
    "id": "238bb4ca-606d-4817-afad-78bee2898264",
    "username": "Shilpa shetty kundr"
}
//1
, {
    "about": "Www.Nargisfakhri.com Instagram- @NargisFakhri Twitter- @NargisFakhri FaceBook- Nargis Fakhri ",
    "id": "cda99c24-955a-4c58-a6a8-c811938df530",
    "username": "Nargis Fakhri"
}
//2
, {
    "description": "Celebrating Black Friday in this lovely black cut out romper and floral accessories. I love black and i think it is the easiest thing to wear when i am in doubt. So a black romper solves my dilemma of what to wear when i am short of time to decide and outfit. When you wear black add some fun accessories to keep the outfit fun and lively.",
    "id": "fa6d9bdf-eae3-4d6c-a668-9be94cfaf980",
    "verb": "created this story on 25 October"
},
//3
 {
    "description": "Today's outfit! #ootd Sheer shirts are always so sexy. Team it up with a bustier inside and it looks elegant and sexy at the same time. I wore my purple sheer shirt with an embellished maxi skirt and statement necklace. Sheer shirts looks fabulous with statement necklaces or layered chains.",
    "id": "066f2bac-1fa8-44f8-b2b6-780df3324c71",
    "verb": "created this story on 21 October"
}]

这就是我做的。？

NSData* jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
id allKeys = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil];

userIDArray=[[NSMutableArray alloc]init];
for (int i=0; i<[allKeys count]; i++) {
    NSDictionary *arrayResult = [allKeys objectAtIndex:i];
    if([arrayResult objectForKey:@"id"]!=NULL){
        NSString *id=[arrayResult objectForKey:@"id"];
        [userIDArray addObject:id];

    }
 }

我的观点是在 allKeys 中保存整个数据，而不是将整个数据从 //0 保存到 //3 我只需要从 //02 到 //03 的数据存储在某个字典中。

Answer 1

假设你意识到这是数组：

    NSArray *a = [[NSArray alloc] init];
    NSMutableArray *a1 = [[NSMutableArray alloc] init];

    for(int i = 1; i < a.count; i++) {
       [a1 addObject: a[i]];
    }