UIView+Animation

uıview+animation.swift

// Source: https://medium.com/nice-photon-ios/animator-easy-trick-to-make-uikit-animations-reusable-2d10713ca3a
struct Animator {
    typealias Animations = () -> ()
    typealias Completion = (Bool) -> ()
    
    let perform: (@escaping Animations, Completion?) -> ()
}

extension UIView {
    static func animate(with animator: Animator, animations: @escaping () -> (), completion: ((Bool) -> ())? = nil) {
        animator.perform(animations, completion)
    }
}

extension Animator {
    static let defaultSpring = Animator { (animations, completion) in
        UIView.animate(
            withDuration: 0.4,
            delay: 0,
            usingSpringWithDamping: 0.8,
            initialSpringVelocity: 1.75,
            options: [.curveEaseInOut, .beginFromCurrentState, .allowUserInteraction],
            animations: animations,
            completion: completion
        )
    }
}

// Usage:
UIView.animate(with: .defaultSpring) {
    self.view.center.y += 50
} completion: { (isCompleted) in
    // completion code
}