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70 lines
3.1 KiB
70 lines
3.1 KiB
1 year ago
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// MagicPresentTransition.swift
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// AnimationTransitionDemo
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//
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// Created by junjie on 2019/8/30.
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// Copyright © 2019 junjie. All rights reserved.
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//
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import UIKit
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class MagicPresentTransition: NSObject, UIViewControllerAnimatedTransitioning {
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var ISPresent = true
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func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
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return 0.5
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}
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func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
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var fromVC: UIViewController
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var toVC: UIViewController
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let container = transitionContext.containerView
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let backView = UIView(frame: container.frame)
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backView.backgroundColor = .black
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backView.alpha = 0.35
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if ISPresent {
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let fromVVC = transitionContext.viewController(forKey: .from) as! UINavigationController
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fromVC = fromVVC.topViewController as! AViewController
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toVC = transitionContext.viewController(forKey: .to) as! BViewController
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let fromView = fromVC.view
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let toView = toVC.view
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toView?.frame = CGRect(x: 0, y: UIScreen.main.bounds.size.height, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height)
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container.addSubview(fromView!)
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container.addSubview(backView)
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container.addSubview(toView!)
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UIView.animate(withDuration: self.transitionDuration(using: transitionContext), animations: {
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toView?.frame = CGRect(x: 0, y: UIScreen.main.bounds.size.height/3, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height/3 * 2)
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}) { (result) in
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transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
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}
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} else {
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fromVC = transitionContext.viewController(forKey: .from) as! BViewController
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toVC = (transitionContext.viewController(forKey: .to) as! UINavigationController).topViewController as! AViewController
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let fromView = fromVC.view
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let toView = toVC.view
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fromView?.frame = CGRect(x: 0, y: UIScreen.main.bounds.size.height/3, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height/3*2)
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container.addSubview(toView!)
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container.addSubview(backView)
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container.addSubview(fromView!)
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UIView.animate(withDuration: self.transitionDuration(using: transitionContext), animations: {
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fromView?.frame = CGRect(x: 0, y: UIScreen.main.bounds.size.height, width: UIScreen.main.bounds.size.width, height: 0)
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}) { (result) in
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if !transitionContext.transitionWasCancelled {
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backView.removeFromSuperview()
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}
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transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
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}
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}
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}
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func reloadWithPresent(isPresent: Bool) -> MagicPresentTransition {
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ISPresent = isPresent
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return self
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}
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}
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