objective-c - 如何在没有内存泄漏的情况下将图像的 NSData 转换为 CGImageRef

Question

我将图像的 NSData 转换为 CGImage，如下所示，但我在那里遇到内存泄漏，但有人告诉我如何在不泄漏的情况下转换它:

CFDataRef imgData;
CGDataProviderRef imgDataProvider;
CGImageRef image1;
imgData = (CFDataRef)[array objectAtIndex:i];
    imgDataProvider = CGDataProviderCreateWithCFData (imgData);
    image1 = CGImageCreateWithPNGDataProvider(imgDataProvider, NULL, true, kCGRenderingIntentDefault);

Answer 1

这应该有效:

CFDataRef imgData;
CGDataProviderRef imgDataProvider;
CGImageRef image1;
imgData = (CFDataRef)[array objectAtIndex:i];
imgDataProvider = CGDataProviderCreateWithCFData (imgData);
CFRelease(imgData);
image1 = CGImageCreateWithPNGDataProvider(imgDataProvider, NULL, true, kCGRenderingIntentDefault);
CGDataProviderRelease(imgDataProvider);

完成后不要忘记使用 CGImageRelease(image1);。