我启动了一个后台队列来首先加载图像,然后更新主队列中的UIImageView图像。 int i = 0;
for (UIImageView *imageView in self.featuredPhotoImageViewCollection) {
dispatch_async(dispatch_queue_create("imageQueue", NULL), ^{
在非ARC应用程序,我具有由委托入队和看起来像一个的NSOperation亚类: // note that the delegate and element properties are retained
-(id)initWithDelegate:(id<SomeDelegate>)inDelegate element:(SomeElement *)inElement
{
if