FSTransition

目标:这大概是最简洁的 转场动画 库了

结果演示

使用

1. 创建一个动画实现类 遵循FSTransitionAnimationProtocol协议

import UIKit
class ScaleTransitionAnimation: FSTransitionAnimationProtocol {
 var snapToView: UIView?
 
 var snapFromView: UIView?
	
 func setToAnimation(_ fromView: UIView, toView: UIView, containerView: UIView, animationComplete: @escaping (() -> ())) {
 // 在这里完成你的进场动画 
 }
 
 func backToAnimation(_ fromView: UIView, toView: UIView, containerView: UIView, animationComplete: @escaping (() -> ())) {
 // 在这里完成你的退场动画
 }
}

import UIKit
class ScaleTransitionAnimation: FSTransitionAnimationProtocol {
 func setToAnimation(_ fromView: UIView, toView: UIView, containerView: UIView, animationComplete:@escaping (() -> ())) {
 guard let snapToView = snapToView else { return }
 guard let snapFromView = snapFromView else { return }
 containerView.addSubview(snapToView)
 containerView.addSubview(snapFromView)
 snapFromView.layer.transform = CATransform3DIdentity
 
 UIView.animate(withDuration: 0.6, animations: {
 snapFromView.layer.transform = CATransform3DMakeScale(0.1, 0.1, 1)
 }) { (finish) in
 animationComplete()
 }
 }
 
 func backToAnimation(_ fromView: UIView, toView: UIView, containerView: UIView, animationComplete:@escaping (() -> ())) {
 guard let snapToView = snapToView else { return }
 guard let snapFromView = snapFromView else { return }
 containerView.addSubview(snapFromView)
 containerView.addSubview(snapToView)
 snapToView.layer.transform = CATransform3DMakeScale(0.1, 0.1, 1)
 UIView.animate(withDuration: 0.6, animations: {
 snapToView.layer.transform = CATransform3DIdentity
 }) { (finish) in
 animationComplete()
 }
 }
}

2. 外部调用

2.1 非手势转场调用

 @IBAction func onPushAnimation(_ sender: Any) {
 let animation = ScaleTransitionAnimation()
 let vc = ScaleSecondViewController.init(nibName: "ScaleSecondViewController", bundle: nil)
 self.fs_pushViewController(vc, animation: animation)
 }

2.2 手势转场调用

override func viewDidLoad() {
 super.viewDidLoad()
 fs_registerToInteractiveTransition([.left]) {[weak self] in
 let animation = OpenDoorTranstionAnimation()
 let vc = OpenDoorSecondViewController.init(nibName: "OpenDoorSecondViewController", bundle: nil)
 self?.fs_pushViewController(vc, animation: animation)
 }
 }

class InteractiveViewController: UIViewController {
 override func viewDidLoad() {
 super.viewDidLoad()
 fs_registerBackInteractiveTransition([.right]) {
 self.navigationController?.popViewController(animated: true)
 }
 }
}

2.3 手势转场设置手势响应区域

override func viewDidLoad() {
 super.viewDidLoad()
 fs_registerToInteractiveTransition([.leftOffset(view.frame.width / 2.0), .rightOffset(view.frame.width / 2.0)]) {
 let animation = OpenMiddleTranstionAnimation()
 let vc = OpenMiddleSecondViewController.init(nibName: "OpenMiddleSecondViewController", bundle: nil)
 self.fs_pushViewController(vc, animation: animation)
 }
 }

override func viewDidLoad() {
 super.viewDidLoad()
 fs_registerBackInteractiveTransition([.left, .right]) {
 self.navigationController?.popViewController(animated: true)
 }
 }