Cocoa: run block after animation on OSX

Question

I'm using animator to implement an animation, like

[[self.view animator] setFrame:newFrame];

but I want to run a method or block after the animation finish, as follow:

[[self.view animator] setFrame:newFrame onComplete:^{
    NSLog(@"****");
}];

Is there any way to implement it?

Answer 1

You should use NSAnimationContext and it's completionHandler:

[NSAnimationContext beginGrouping];
[[NSAnimationContext currentContext] setCompletionHandler:^{
    NSLog(@"****");
}];
[[self.view animator] setFrame:newFrame];
[NSAnimationContext endGrouping];

Answer 2

I find another solution from WWDC video and hope the bellow code helps someone else