Question

Just started exploring Cocoa so pretty much a total noob.

I’ve written a very simple game. Set it up in Interface Builder and got it working fine.

It contains a number of buttons and I’m now trying to get the buttons to display images.

To start with I’m trying to get an image displayed on just one of the buttons which is called tile0 .

The image file (it’s nothing but a green square at the moment, but I’m just trying to get that working before I attempt anything more exotic) is sitting in the same directory as the class file which controls the game.

I have the following code sitting in my wakeFromNib method:

 NSString *myImageFileName = [[NSString alloc] init];
 myImageFileName = @"greenImage.jpg";
 NSImage *myImage = [[NSImage alloc] initByReferencingFile:myImageFileName];
 [tile0 setImage: myImage];

Trouble is, the game runs fine, but the image isn’t appearing on my button.

Is there someone who could kindly tell me if I’m doing something obviously wrong?

Many Thanks.

Answer 1

The first problem is you allocate a string but then replace it with a string constant. That isn’t causing your image problem but it is a memory leak.

I’ve never used initByReferencingFile, I usually just use imageNamed:. There is an example of using imageNamed here.