Best way to store a collection of objects - objective-c

Question

I have several objects that I want to store in an array. What is the way to do this in objective-c? I have been looking into NSMutableDictionary but have had no luck.
In my code below, I am iterating through an array of strings, making a network call for each string, and getting an object back for each string. I want to store my objects in a list that I can access later.
-(void) setPictures {
for(id item in self.phraseWordsArray) {
AFNetworkingAPIClient *netowrkingObject = [[AFNetworkingAPIClient alloc] init];
[netowrkingObject getPhotoForWord:item success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"responseObject=%#",responseObject);
self.test = responseObject;
[self printOutJSON];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"error=%#",error);
}];
}
}

Answer 1

It looks like NSMutableArray is what you need, am i correct?

Answer 2

You can store your response objects into an NSMutableArray that is a property on the UIViewController calling this code, or elsewhere. See the following for an example scenario:
// In your interface...
#property (nonatomic,strong) NSMutableArray *responseObjects;
// ... Later in code
self.responseObjects = [NSMutableArray array];
- (void)setPictures {
for(id item in self.phraseWordsArray) {
AFNetworkingAPIClient *netowrkingObject = [[AFNetworkingAPIClient alloc] init];
[netowrkingObject getPhotoForWord:item success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"responseObject=%#",responseObject);
self.test = responseObject;
[self printOutJSON];
if (responseObject) {
[self.responseObjects addObject:responseObject];
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"error=%#",error);
}];
}
}