Question

I’m animating an NSScrollView scrolling, with this piece of code:

    [NSAnimationContext beginGrouping];
    NSClipView* clipView = [self contentView];
    NSPoint newOrigin = [clipView bounds].origin;
    newOrigin.x = page*kGalleryWidth;
    [[clipView animator] setBoundsOrigin:newOrigin];
    [NSAnimationContext endGrouping];

Now I’m trying to get the event that triggers the end of the animation.
I’ve read that with a some lines of code, using CAAnimation, I would easily achieve it, but I can’t.

I’ve tried these following code:

CAAnimation *moveAnimation = [[self.contentView animationForKey:@"frameOrigin"] copy];
moveAnimation.delegate = self;
[self.contentView setAnimations:[NSDictionary dictionaryWithObject:moveAnimation forKey:@"frameOrigin"]];

• (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{

  NSLog(@”STOP!”);

}

Does someone can help me?

Thanks!

Answer 1

You can use this function:

[[NSAnimationContext currentContext] setCompletionHandler:<#(void (^)(void))completionHandler#>]

 [NSAnimationContext beginGrouping];
    [[NSAnimationContext currentContext] setCompletionHandler:^{
        NSLog(@"animation stop!");
    }];
    NSClipView* clipView = [self contentView];
    NSPoint newOrigin = [clipView bounds].origin;
    newOrigin.x = page*kGalleryWidth;
    [[clipView animator] setBoundsOrigin:newOrigin];
    [NSAnimationContext endGrouping];