Add UIImageView to UIView from subclass - ios

Question

I created a custom class called Slot and it is a subclass of UIView. In the slot class, the following function is called:
- (NSString*)assignItem:(Item*)item {
NSString *message;
if (item.slotSize + currentCapacity > slotSize) {
message = #"Sorry this item will not fit.";
} else {
//uiimageview stuff
UIImage *image = [[UIImage alloc] initWithContentsOfFile:item.imageName];
UIImageView *iv = [[UIImageView alloc] initWithImage:image];
[self addSubview:iv];
[items addObject:item];
currentCapacity = currentCapacity + item.slotSize;
message = #"Success";
}
NSLog(#"%#",message);
return message;
}
What happens is an Item (another custom class, subclass of NSObject) is passed to the Slot a UIImageView is created from the item from a string to an image in the bundle and it is added to the subview. However, the image isn't showing. The Success message is showing so I know its getting in there. Is there another way to add a subview from the subclass or am I just doing it all wrong?

Answer 1

UIImage *image = [[UIImage alloc] initWithContentsOfFile:item.imageName];
This is not the correct way to instantiate an image that you have in the bundle. You can either use imageNamed: like this,
UIImage *image = [UIImage imageNamed:item.imageName];
Or, you can get the image with initWithContentsOfFile like this,
NSString *imagePath = [[NSBundle mainBundle] pathForResource:item.imageName ofType:#"JPG"]; // replace JPG with whatever is appropriate for your image.
UIImage *image = [UIImage imageWithContentsOfFile:imagePath];
imageNamed: will cache the images, the other way doesn't.