如何在UIViewController之間使用自定義轉(zhuǎn)場動畫

要在UIViewController之間使用自定義轉(zhuǎn)場動畫，可以遵循以下步驟：

1. 創(chuàng)建一個實現(xiàn)了UIViewControllerAnimatedTransitioning協(xié)議的自定義轉(zhuǎn)場動畫類。這個類需要實現(xiàn)兩個方法：transitionDuration和animateTransition。

class CustomTransitionAnimator: NSObject, UIViewControllerAnimatedTransitioning {
    
    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
        return 0.5
    }
    
    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
        // 實現(xiàn)自定義動畫邏輯
    }
}

2. 在你的UIViewController中設(shè)置轉(zhuǎn)場代理，并實現(xiàn)UIViewControllerTransitioningDelegate協(xié)議中的方法。

class FirstViewController: UIViewController, UIViewControllerTransitioningDelegate {
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        let secondViewController = segue.destination as! SecondViewController
        secondViewController.transitioningDelegate = self
    }
    
    // 實現(xiàn)UIViewControllerTransitioningDelegate協(xié)議方法
    func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        return CustomTransitionAnimator()
    }
    
    func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        return CustomTransitionAnimator()
    }
}

3. 在你的CustomTransitionAnimator類中實現(xiàn)animateTransition方法，定義具體的動畫邏輯。

func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
    let containerView = transitionContext.containerView
    let fromView = transitionContext.view(forKey: .from)!
    let toView = transitionContext.view(forKey: .to)!
    
    // 實現(xiàn)自定義動畫邏輯
    // 將動畫效果添加到containerView中
    
    // 動畫完成后需要調(diào)用completeTransition方法
    transitionContext.completeTransition(true)
}

通過以上步驟，你就可以在UIViewController之間使用自定義轉(zhuǎn)場動畫了。在進(jìn)行轉(zhuǎn)場時，系統(tǒng)會自動調(diào)用你實現(xiàn)的自定義轉(zhuǎn)場動畫類中的動畫邏輯。