将数据保存在NSDictionary从NSDictionary

这里是我的JSON格式的数据，我已经parsing并保存在一个名为NSDictionary * dic的词典中。我有一个名为dic1的NSDicitonary，我只想将数据从// 1存储到// 3，我该怎么做？请帮帮我 ？

//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" }] 

这是我怎么做的？

 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allKeys整个数据被保存，而不是保存从// 0到// 3的整个数据我只需要从某些字典中存储的数据// 02到// 03。

Answer 1

假设你意识到这是一个数组：

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