如何在iOS 7中的UINavigationController上推送視圖時交叉解散？

Question

如果我只需調用與推法：

[self.navigationController pushViewController:viewController animated:YES]; 

然後使用推動畫。我如何改變它使用交叉溶解動畫，就像我可以使用模態賽格？

Answer 1

可以使用CATransition作爲證明this answer：

CATransition* transition = [CATransition animation]; 
transition.duration = 0.5; 
transition.type = kCATransitionFade; 
[self.navigationController.view.layer addAnimation:transition forKey:nil]; 
[self.navigationController pushViewController:viewController animated:NO]; 

Answer 2

SWIFT 3 - 截至11月，2017年

let transition = CATransition() 
transition.duration = 0.5 
transition.type = kCATransitionFade 
self.navigationController?.view.layer.add(transition, forKey:nil) 

Answer 3

的UINavigationControllerDelegate協議有可能返回一個自定義的方法UIViewControllerAnimatedTransitioning對象，它將控制參與轉換的兩個視圖控制器之間的動畫。

創建一個動畫類，以控制跨解散過渡：

class Animator: NSObject, UIViewControllerAnimatedTransitioning { 

    let animationDuration = 0.25 

    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval { 
     return animationDuration 
    } 

    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) { 
     let toVC = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to) 
     toVC?.view.alpha = 0.0 
     let fromVC = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from) 
     transitionContext.containerView.addSubview(fromVC!.view) 
     transitionContext.containerView.addSubview(toVC!.view) 

     UIView.animate(withDuration: animationDuration, animations: { 
      toVC?.view.alpha = 1.0 
     }) { (completed) in 
      fromVC?.view.removeFromSuperview() 
      transitionContext.completeTransition(!transitionContext.transitionWasCancelled) 
     } 
    } 
} 

而在你UINavigationControllerDelegate它提供：

func navigationController(_ navigationController: UINavigationController, animationControllerFor operation: UINavigationControllerOperation, from fromVC: UIViewController, to toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? { 
    return Animator() 
} 

這裏是一個更深入的教程：http://blog.rinatkhanov.me/ios/transitions.html