Hey all.

I initialized a class in my singleton called DataModel. Now, from my UIViewController, when I click a button, I have a method that is trying to access that class so that I may add an object to one of its dictionaries. My get/set method passes back the pointer to the class from my singleton, but when I am back in my UIViewController, the class passed back doesn't respond to methods. It's like it's just not there. I think it has something to do with the difference in passing pointers around classes or something. I even tried using the copy method to throw a copy back, but no luck.

UIViewController:

ApplicationSingleton *applicationSingleton = [[ApplicationSingleton alloc] init];

DataModel *dataModel = [applicationSingleton getDataModel];

[dataModel retrieveDataCategory:dataCategory];

Singleton:

ApplicationSingleton *m_instance;
DataModel *m_dataModel;

- (id) init {
    NSLog(@"ApplicationSingleton.m initialized.");
    self = [super init];
    if(self != nil) {
        if(m_instance != nil) {
            return m_instance;
            }
        NSLog(@"Initializing the application singleton.");
        m_instance = self;
        m_dataModel = [[DataModel alloc] init];   
        }
    NSLog(@"ApplicationSingleton init method returning.");
    return m_instance;
    }

-(DataModel *)getDataModel {
    DataModel *dataModel_COPY = [m_dataModel copy];
    return dataModel_COPY;
    }

For the getDataModel method, I also tried this:

-(DataModel *)getDataModel {
    return m_dataModel;
    }

In my DataModel retrieveDataCategory method, I couldn't get anything to work. I even just tried putting a NSLog in there but it never would come onto the console.

Any ideas?