Can I pass a block as a @selector with Objective-C?

Question

Is it possible to pass an Objective-C block for the @selector argument in a UIButton? i.e., Is there any way to get the following to work?

Answer 1

Blocks are objects. Pass your block as the target argument, with @selector(invoke) as the action argument, like this:

id block = [^{NSLog(@"Hello, world");} copy];// Don't forget to -release.

[button addTarget:block
           action:@selector(invoke)
 forControlEvents:UIControlEventTouchUpInside];