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copied!<p>For Michael Tyson's response (I can't comment everywhere yet), I propose an insertion of the following code in didMoveToSuperview for proper reuse of MKAnnotationView so it does the animation again and then imitate the sequencial addition of annotations</p> <p>Play with the dividers and multipliers for different visual results...</p> <pre><code>- (void)didMoveToSuperview { //necessary so it doesn't add another animation when moved to superview = nil //and to remove the previous animations if they were not finished! if (!self.superview) { [self.layer removeAllAnimations]; return; } float xOriginDivider = 20.; float pos = 0; UIView *mySuperview = self.superview; while (mySuperview && ![mySuperview isKindOfClass:[MKMapView class]]) mySuperview = mySuperview.superview; if ([mySuperview isKindOfClass:[MKMapView class]]) //given the position in the array // pos = [((MKMapView *) mySuperview).annotations indexOfObject:self.annotation]; // left to right sequence; pos = [((MKMapView *) mySuperview) convertCoordinate:self.annotation.coordinate toPointToView:mySuperview].x / xOriginDivider; float yOffsetMultiplier = 20.; float timeOffsetMultiplier = 0.05; CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform"]; animation.duration = 0.4 + timeOffsetMultiplier * pos; animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]; animation.fromValue = [NSValue valueWithCATransform3D:CATransform3DMakeTranslation(0, -400 - yOffsetMultiplier * pos, 0)]; animation.toValue = [NSValue valueWithCATransform3D:CATransform3DIdentity]; // rest of animation group... } </code></pre>

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