NSArray with nested objects "losing" objects in memory - ios

Question

So in a block I am getting and parsing a JSON object that looks like this (any time you see "<...>" assume properly formed data)(also this is only one of the objects in question):
{
asset = {
<...>
};
<...>
sections = (
{
<...>
fields = (
);
items = (
);
},
{
<...>
fields = (
);
items = (
);
},
{
<...>
fields = (
);
items = (
{
<...>
properties = {
title = "We welcome guests...";
};
},
{
<...>
properties = {
title = "More text";
};
},
{
<...>
properties = {
title = "Opportunity Insert...";
};
}
);
},
{
<...>
fields = (
{
<...>
values = (
Private,
Public
);
},
{
<...>
values = (
);
},
{
<...>
values = (
);
}
);
items = (
);
},
{
<...>
fields = (
{
<...>
values = (
);
},
{
<...>
values = (
);
}
);
items = (
);
}
);
}
The code to get this(using AFNetworking):
NSMutableURLRequest* req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:AppsURL([[NSUserDefaults standardUserDefaults] objectForKey:kAuthToken])]];
AFHTTPRequestOperation* op = [[AFHTTPRequestOperation alloc] initWithRequest:req];
[op setResponseSerializer:[[AFJSONResponseSerializer alloc] init]];
[op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
if (responseObject != nil&&[responseObject isKindOfClass:[NSDictionary class]]) {
NSDictionary* dict = (NSDictionary*)responseObject;
if (dict[#"apps"]&&[dict[#"apps"] isKindOfClass:[NSArray class]]) {
apps = dict[#"apps"];
dispatch_async(dispatch_get_main_queue(), ^{
[self.tableView reloadData];
});
return;
}
}
NSLog(#"Error Loading apps:%#",responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error:%#",error);
NSLog(#"Response:%#",operation.response.description);
}];
[op start];
At this point everything is loading into memory and working perfectly. I set this to a class-level NSArray and then use that NSArray to fill a table. The problem comes when I try to retrieve the data after the user picks one of the items from the table. I then use the index and pull that object from the NSArray to find that is looks like this(note the fact that all item and field arrays are now empty):
{
asset = {
<...>
};
<...>
sections = (
{
<...>
fields = (
);
items = (
);
},
{
<...>
fields = (
);
items = (
);
},
{
<...>
fields = (
);
items = (
);
},
{
<...>
fields = (
);
items = (
);
}
);
}
Code for select:
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
if (indexPath.row < apps.count) {
//the output of this is what I copy and pasted
NSLog(#"app data to be cleaned up:%# \r app data sent:%#",apps[indexPath.row],((NSDictionary*)apps[indexPath.row]).mutableCopy);
//I originally thought the problem was here, but the output above proved me wrong
NSMutableDictionary *app = [Functions recurseDictionaryForNull:((NSDictionary*)apps[indexPath.row]).mutableCopy];
[[NSUserDefaults standardUserDefaults] setObject:app
forKey:#"app"];
MainMenuViewController* mainMenu = (MainMenuViewController*)[self.storyboard instantiateViewControllerWithIdentifier:#"mainMenu"];
[self.navigationController setViewControllers:#[mainMenu] animated:YES];// reset nav stack
}
}
I'm kinda at a lose... any ideas what could be doing this and how to fix it??

Answer 1

It was the data from the server. I was told 2 "apps" were the same except for one item and turns out they were missing all of the fields and items as well. Thanks Dima and Mike for taking the time anyways!