imageWithCGImage and memory

Question

If I use [UIImage imageWithCGImage:], passing in a CGImageRef, do I then release the CGImageRef or does UIImage take care of this itse

Answer 1

Not sure if this helps, but I had a similar problem. I read the answers and then did the following which appears to have fixed it:

CGImageRef cgImage = [asset thumbnail];
    UIImage *thumbImage = [[UIImage imageWithCGImage:cgImage ]retain];
    UIImageView *thumbImageView = [[UIImageView alloc] initWithImage:thumbImage];
    CGImageRelease(cgImage);

I used the autorelease as suggested but it was not enough. One I had added the image to the UIImageView I then released the cgImage.
It didn't crash and deallocated nicely. Why -- I have no idea but it worked.

The asset thumbnail part is from the ALAsset Library by the way, you might need something else there.