我有一个功能:
- (UIImage *) resizeImage:(UIImage *)image width:(CGFloat)resizedWidth height:(CGFloat)resizedHeight shouldCrop:(BOOL)crop
{
CGImageRef imageRef = [image CGImage];
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGContextRef bitmap = CGBitmapContextCreate(NULL, resizedWidth, resizedHeight, 8, 4 * resizedWidth, colorSpace, (CGBitmapInfo) kCGImageAlphaPremultipliedFirst);
CGContextDrawImage(bitmap, CGRectMake(0, 0, resizedWidth, resizedHeight), imageRef);
CGImageRef ref = CGBitmapContextCreateImage(bitmap);
if (crop) // for SmallImage (tableviewcell)
{
CGRect cropRect = CGRectMake(0, CGImageGetHeight(ref) * 0.5 - ((float) kIvHeight * 0.5), (float) kIvWidth, (float) kIvHeight);
ref = CGImageCreateWithImageInRect(ref, cropRect);
}
UIImage * result = [UIImage imageWithCGImage:ref];
CGContextRelease(bitmap);
CGImageRelease(ref);
CGImageRelease(imageRef);
return result;
}
行CGImageRelease(imageRef);导致我的应用程序崩溃与EXC_BAD_ACCESS
我删除该行似乎工作 – 但这不会导致内存泄漏?
最佳答案 您没有CGImageRef imageRef,因为您使用[image CGImage]获取它,因此您不需要释放它.