Access Method After UIImageView Animation Finish

Question

I have an array of images loaded into a UIImageView that I am animating through one cycle. After the images have been displayed, I would like a @selector to be

Answer 1

With this method you avoid timers to fire while the imageView is still animating due to slow image loading. You could use both performSelector: withObject: afterDelay: and GCD in this way:

[self performSelector:@selector(didFinishAnimatingImageView:)
           withObject:imageView
           afterDelay:imageView.animationDuration];

/!\ self.imageView.animationDuration has to bet configured before startAnimating, otherwise it will be 0

Than if -(void)didFinishAnimatingImageView:create a background queue, perform a check on the isAnimating property, than execute the rest on the main queue

- (void)didFinishAnimatingImageView:(UIImageView*)imageView
{

   dispatch_queue_t backgroundQueue = dispatch_queue_create("com.yourcompany.yourapp.checkDidFinishAnimatingImageView", 0);
   dispatch_async(backgroundQueue, ^{

       while (self.imageView.isAnimating)
           NSLog(@"Is animating... Waiting...");

       dispatch_async(dispatch_get_main_queue(), ^{

          /* All the rest... */

       });

   });

}