Question

I’m sure this is a very obvious question but I’m not getting anywhere with it and I’ve been trying for half an hour or so now.

I have an NSMutableDictionary which has keys & values, obviously. Each key stores an array of objects. What I need to do is find a specific array in a key and get the list of the array. The catch is that I don’t know the value of the key, I just know it’s index. (EG: I know I need to find the array in the 2nd key).

I am almost certain this is a very easy & trivial thing to do but it’s escaping me, I’ve only been doing Obj-C for a short while so not entirely at home with it yet!

Thanks,

Jack.

Answer 1

Use allKeys: to access the keys of your dictionary.

- (NSArray *)allKeys

Use as below .

    NSArray* dictAllKeys = [dict allKeys];
    if([dictAllKeys count] > 2)
    {
      NSArray* myArrayInDict = [dict objectForKey:[dictAllKeys objectAtIndex:1]];
      // get the length of array in dict at 2nd key
      int length = [myArrayInDict count];
    }