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copied!<p>I think the way to go is to represent what you want to happen in each animation parametrically (which in this case is just a color), and then keep those params in an array. The array is like your animation to-do list:</p> <pre><code>@property(strong, nonatomic) NSArray *animationTodo; </code></pre> <p>We also need to keep track of where we are in the list. Use a boxed (NS) number so we can represent "don't animate" as a nil, distinct from index zero:</p> <pre><code>@property(strong, nonatomic) NSNumber *animationIndex; </code></pre> <p>The array is initialized with colors:</p> <pre><code>self.animationTodo = [NSArray arrayWithObjects:[UIColor redColor], [UIColor greenColor], ... nil]; </code></pre> <p>Now the animation can be compressed to a single method:</p> <pre><code>- (void)animate { if (!animationIndex) return; NSInteger index = [animationIndex intValue]; [UIView animateWithDuration:3.0 animations:^{ self.view.backgroundColor = [animationToDo objectAtIndex:index]; } completion:^(BOOL finished) { NSInteger nextIndex = (index==self.animationTodo.count-1)? 0 : index+1; // advance index in a ring self.animationIndex = [NSNumber numberWithInt:nextIndex]; // schedule the next one in 3s [self performSelector:@selector(animate) withObject:nil afterDelay:3.0]; }]; } </code></pre> <p>Perform selector let's you state the delay and also has the positive effect of not winding up the stack each time you start the next animation.</p> <p>Stopping is simple now, too. Do this before the view disappears and any other time you wish to stop.</p> <pre><code>- (void)stopAnimating { self.animationIndex = nil; [NSObject cancelPreviousPerformRequestsWithTarget:self]; } </code></pre>

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