Best Technique for Replacing Delegate Methods with Blocks

Question

I\'m looking to create a category to replace delegate methods with callbacks blocks for a lot of the simple iOS APIs. Similar to the sendAsyc block on NSURLConnection. There are

Answer 1

I had a similar problem and chose your option 2, but with the 2 small additions:

1. Explicitly marking the delegate it implements like this:

   @interface __DelegateBlock:NSObject 
   

2. Check to ensure the callback is not nil before calling:

   if (callbackBlock != nil) {
       callbackBlock(buttonIndex);
   }