当使用这个自定义方法返回CGImageRef时,我遇到了内存泄漏的问题。由于必须返回cgImage,所以我无法正确释放它。我该怎么办?
- (CGImageRef)rectRoundedImageRef:(CGRect)rect radius:(int)radius
{
CGSize contextSize = CGSizeMake(rect.size.width, rect.size.height);
CGFloat imageScale = (CGFloat)1.0;
CGFloat width = contextSize.width;
CGFloat height = contextSize.height;
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGContextRef context = CGBitmapContextCreate(NULL, width * imageScale, height * imageScale, 8, 0, colorSpace, kCGImageAlphaPremultipliedLast);
// Draw ...
// Get your image
CGImageRef cgImage = CGBitmapContextCreateImage(context);
CGColorSpaceRelease(colorSpace);
CGContextRelease(context);
//CGImageRelease(cgImage); //If I release cgImage the app crashes.
return cgImage;
}