UIGraphics Memory Leak

[daveMac]

Hello there, I have a problem I just can't seem to figure out in my code. When I run my app using Instruments, I keep showing a memory leak. I didn't think that UIImages could leak, but that is what it is showing. I am really hoping that someone will be able to help me understand this and also give me an idea of how to fix it. Thanks in advance!

UIGraphicsBeginImageContext(test.size);  
	
	[image1 drawInRect:CGRectMake(0,0, test.size.width, test.size.height)]; 
	
	[image2 drawInRect:CGRectMake(0,0, test.size.width, test.size.height)]; 
	
//the next line is the leak	
	UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext();
	
	UIGraphicsEndImageContext(); 

	return resultingImage;

[daveMac]

I figured out that the elusive memory leak isn't actually here, even though Instruments is showing that it is.

...just thought I would post this follow up in case someone stumbles into this thread and is still wondering.

[jowie]

Originally Posted by daveMac

I figured out that the elusive memory leak isn't actually here, even though Instruments is showing that it is.

...just thought I would post this follow up in case someone stumbles into this thread and is still wondering.

Interesting, because I'm definitely getting a leak from a similar piece of code:

UIGraphicsBeginImageContext(portraitView.bounds.size);
// this is the line that is causing the leak!
// if I comment it out, the leak goes away...
[portraitView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

[daveMac]

Originally Posted by jowie

Interesting, because I'm definitely getting a leak from a similar piece of code:

UIGraphicsBeginImageContext(portraitView.bounds.size);
// this is the line that is causing the leak!
// if I comment it out, the leak goes away...
[portraitView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

Although this is where the leak is showing up, I can tell you from experience that most likely this isn't where you should be looking. Pay really close attention to the retain counts, and watch your releasing. I would be happy to try and help more, but you would need to post more code of how and where you are creating and using portraitView. Good luck.