UIView appereance from bottom to top and vice versa(Core Animation)

Question

My goal is to understand and implement feature via Core Animation.
I think it\'s not so hard,but unfortunately i don\'t know swift/Obj C and it\'s hard to understand native

Answer 1

You can use like this Extension

extension UIView{
    func animShow(){
        UIView.animate(withDuration: 2, delay: 0, options: [.curveEaseIn],
                       animations: {
                        self.center.y -= self.bounds.height
                        self.layoutIfNeeded()
        }, completion: nil)
        self.isHidden = false
    }
    func animHide(){
        UIView.animate(withDuration: 2, delay: 0, options: [.curveLinear],
                       animations: {
                        self.center.y += self.bounds.height
                        self.layoutIfNeeded()

        },  completion: {(_ completed: Bool) -> Void in
        self.isHidden = true
            })
    }
}