UIViewAnimationOption Enum Cover Vertical - ios

Question

I would like to push a ViewController with a custom modal animation. I would prefer to use the "Cover Vertical" animation. Is there a UIViewAnimationOption for "Cover Vertical"?
[self.navigationController pushViewController:myViewController animated:NO];
[UIView transitionWithView:self.navigationController.view duration:1 options:UIViewAnimationOptionCurveEaseIn animations:nil completion:nil];
Replace UIViewAnimationOptionCurveEaseIn with ... ? Or is there a better way to do this?

Answer 1

You need to use an Animation Controller. The code to set this up looks like this:
- (id)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController (UIViewController *)source
{
return self.animationController;
}
- (id )animationControllerForDismissedController:(UIViewController *)dismissed {
self.animationController.isPresenting = NO;
return self.animationController;
}
Then you need to use the following method determine if you are presenting or dismissing:
-(void)animateTransition:(id)transitionContext{
if(self.isPresenting){
[self executePresentationAnimation:transitionContext];
}
else{
[self executeDismissalAnimation:transitionContext];
}
}
Finally, you define your animations, the following code will push the view in from the top as modal view:
-(void)executePresentationAnimation:(id)transitionContext{
UIView* inView = [transitionContext containerView];
UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
[inView addSubview:toViewController.view];
CGPoint centerOffScreen = inView.center;
centerOffScreen.y = (-1)*inView.frame.size.height;
toViewController.view.center = centerOffScreen;
[UIView animateWithDuration:self.presentationDuration delay:0.0f usingSpringWithDamping:0.4f initialSpringVelocity:6.0f options:UIViewAnimationOptionCurveEaseIn animations:^{
toViewController.view.center = inView.center;
} completion:^(BOOL finished) {
[transitionContext completeTransition:YES];
}];
}
and when you dismiss the reverse should happen:
-(void)executeDismissalAnimation:(id)transitionContext{
UIView* inView = [transitionContext containerView];
UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
UIViewController* fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
[inView insertSubview:toViewController.view belowSubview:fromViewController.view];
CGPoint centerOffScreen = inView.center;
centerOffScreen.y = (-1)*inView.frame.size.height;
[UIView animateKeyframesWithDuration:self.dismissalDuration delay:0.0f options:UIViewKeyframeAnimationOptionCalculationModeLinear animations:^{
[UIView addKeyframeWithRelativeStartTime:0 relativeDuration:0.5 animations:^{
CGPoint center = fromViewController.view.center;
center.y += 50;
fromViewController.view.center = center;
}];
[UIView addKeyframeWithRelativeStartTime:0.5 relativeDuration:0.5 animations:^{
fromViewController.view.center = centerOffScreen;
}];
} completion:^(BOOL finished) {
[transitionContext completeTransition:YES];
}];
}