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下面是一段代码,以突出屏幕的一部分,我想知道是否有这个代码的任何泄漏:仪表不显示任何泄漏,但拨款不断增加
- (UIImage*)createImageSection:(UIImage*)image section:(CGRect)section
{
UIScreen *screen = [UIScreen mainScreen];
float originalWidth = image.size.width * [screen scale] ;
float originalHeight = image.size.height * [screen scale];
int w = originalWidth * section.size.width ;
int h = originalHeight * section.size.height ;
CGContextRef ctx = CGBitmapContextCreate(nil, w , h , 8, w * 8, CGImageGetColorSpace([image CGImage]), kCGImageAlphaPremultipliedLast);
CGContextClearRect(ctx, CGRectMake(0, 0, originalWidth * section.size.width * [screen scale], originalHeight * section.size.height * [screen scale])); // w + h before
CGContextTranslateCTM(ctx, (float)-originalWidth * section.origin.x , (float)-originalHeight * section.origin.y);
CGContextDrawImage(ctx, CGRectMake(0, 0, originalWidth , originalHeight), [image CGImage]);
CGImageRef cgImage = CGBitmapContextCreateImage(ctx);
//UIImage* resultImage = [[UIImage alloc] initWithCGImage:cgImage scale: [screen scale]];
UIImage* resultImage = [[UIImage alloc] initWithCGImage:cgImage scale:[screen scale] orientation:UIImageOrientationUp] ;
CGContextRelease(ctx);
CGImageRelease(cgImage);
return resultImage ;
}
感谢 DKV
-1:方法定义中有'创建'。每次调用create,new或alloc方法时,要遵循Apple的指导原则,您有责任释放该对象,不会返回自动释放的对象。 – v1Axvw 2011-02-03 20:11:35