How to wait for an animator to finish?

Question

This is probably a simple question but I can\'t seem to figure out how to do it. Basically all I want to do is fade a window before closing it:

[[window anim         


        

Answer 1

This is an old (but still popular) question with obsolete answer.

The right way to wait for animator finished is using special NSAnimationContext's class method with completionHanler like this:

[NSAnimationContext runAnimationGroup:^(NSAnimationContext *context){
    // Start some animations here.
    [[window animator] setAlphaValue:0.0];
} completionHandler:^{
    // This block will be invoked when all of the animations started above have completed or been cancelled.
    NSLog(@"All done!");
}];