NSOperation performance

Question

I am trying to server side connection on a background thread using NSOperation. I didn't want to subclass NSOperation ..So how can use NSOperation and how to return response from NSOperation...

Any Ideas about this?

Answer 1

since NSOperation is an abstract class there is no way to use NSOperation without using a subclass of NSOperation.
If you don't want to subclass yourself you can use one of the NSOperation subclasses (ie NSInvocationOperation , or NSBlockOperation ).

Answer 2

这是一个很好的示例，从这里开始： 可可教程：NSOperation和NSOperationQueue