How to animate the view with pre-existing animation? - ios

Question

I want to animate a view with the pre-existing animation of UIView.
I am using this code for animating the UIView -
CATransition *transition = [[CATransition alloc] init];
transition.duration = 0.1;
transition.type = kCATransitionPush;
transition.subtype = kCATransitionFromLeft;
[viewToAnimate.layer addAnimation:transition forKey:kCATransition];
I want to animate some other view, along with this animation.

Answer 1

What you need to do is to chain your animations. Here is example from Apple.
let fadeOut = CABasicAnimation(keyPath: "opacity")
fadeOut.fromValue = 1
fadeOut.toValue = 0
fadeOut.duration = 1
let expandScale = CABasicAnimation()
expandScale.keyPath = "transform"
expandScale.valueFunction = CAValueFunction(name: kCAValueFunctionScale)
expandScale.fromValue = [1, 1, 1]
expandScale.toValue = [3, 3, 3]
let fadeAndScale = CAAnimationGroup()
fadeAndScale.animations = [fadeOut, expandScale]
fadeAndScale.duration = 1

Answer 2

You can use basic iOS animation that is:
UIView .animate(withDuration: TimeInterval) {
code
}
In the code segment you can write to change the x positions of different views. whenever you will click on button that respective view's x corrdinate will animate to 0.

Answer 3

Try this
func animateTransition(transitionContext: UIViewControllerContextTransitioning) {
let fromViewController = transitionContext.viewControllerForKey(UITransitionContextFromViewControllerKey)!
let toViewController = transitionContext.viewControllerForKey(UITransitionContextToViewControllerKey)!
let finalFrameForVC = transitionContext.finalFrameForViewController(toViewController)
let containerView = transitionContext.containerView()
let bounds = UIScreen.mainScreen().bounds
toViewController.view.frame = CGRectOffset(finalFrameForVC, 0, bounds.size.height)
containerView.addSubview(toViewController.view)
UIView.animateWithDuration(transitionDuration(transitionContext), delay: 0.0, usingSpringWithDamping: 0.5, initialSpringVelocity: 0.0, options: .CurveLinear, animations: {
fromViewController.view.alpha = 0.5
toViewController.view.frame = finalFrameForVC
}, completion: {
finished in
transitionContext.completeTransition(true)
fromViewController.view.alpha = 1.0
})
}