自定義presentViewController關(guān)鍵步驟如下：##

• 1.在將要被彈出的VC的初始化函數(shù)中添加如下代碼

class CustomPresentViewController : UIViewController {
   override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {
     super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
     
     self.transitioningDelegate = self
     self.definesPresentationContext = true
     self.providesPresentationContextTransitionStyle = false
     self.modalPresentationStyle = .Custom
  }
}

注意了赵，以上四行必須在初始化中添加违孝，不能添加在viewDidLoad函數(shù)

• 2.定義彈出和消失的動(dòng)畫(huà)類(lèi)
  彈出(present)動(dòng)畫(huà)可以參照如下代碼

class CustomViewControllerPresentAnimator : NSObject, UIViewControllerAnimatedTransitioning {
    //動(dòng)畫(huà)持續(xù)時(shí)間
    func transitionDuration(transitionContext: UIViewControllerContextTransitioning?) -> NSTimeInterval {
        return 0.3
    }
    
    //動(dòng)畫(huà)執(zhí)行的方法
    func animateTransition(transitionContext: UIViewControllerContextTransitioning) {
        let toVC = transitionContext.viewControllerForKey(UITransitionContextToViewControllerKey)
        
        let finalToViewPosition = transitionContext.finalFrameForViewController(toVC!)
        
        let containerView = transitionContext.containerView()
        containerView?.addSubview(toVC!.view)
        
        let duration = self.transitionDuration(transitionContext)
        toVC?.view.frame = finalToViewPosition
        
        toVC!.view.transform = CGAffineTransformMakeScale(0.1, 0.1)
        
        UIView.animateWithDuration(
            duration,
            animations: {
                toVC!.view.transform = CGAffineTransformIdentity
        })
        { _ in
            transitionContext.completeTransition(true)
        }
    }
    
    func animationEnded(transitionCompleted: Bool)
    {
        
    }
}

消失(dismiss)動(dòng)畫(huà)可以參照如下代碼：

class CustomControllerDismissAnimator : NSObject, UIViewControllerAnimatedTransitioning {
    //動(dòng)畫(huà)持續(xù)時(shí)間
    func transitionDuration(transitionContext: UIViewControllerContextTransitioning?) -> NSTimeInterval {
        return 0.3
    }
    
    //動(dòng)畫(huà)執(zhí)行的方法
    func animateTransition(transitionContext: UIViewControllerContextTransitioning) {
        let fromVC = transitionContext.viewControllerForKey(UITransitionContextFromViewControllerKey)
        let duration = self.transitionDuration(transitionContext)
        
        UIView.animateWithDuration(
            duration,
            animations: {
                fromVC!.view.transform = CGAffineTransformMakeScale(0.001, 0.001)
        })
        { _ in
            fromVC?.view.removeFromSuperview()
            transitionContext.completeTransition(true)
        }
    }
    
    func animationEnded(transitionCompleted: Bool)
    {
        
    }
}

3.被彈出的VC實(shí)現(xiàn)UIViewControllerTransitioningDelegate協(xié)議
可以參照如下代碼：

extension CustomPresentViewController : UIViewControllerTransitioningDelegate {
    func animationControllerForPresentedController(presented: UIViewController, presentingController presenting: UIViewController, sourceController source: UIViewController) -> UIViewControllerAnimatedTransitioning?
    {
         // 返回彈出動(dòng)畫(huà)
        return CustomViewControllerPresentAnimator()
    }
    
    func animationControllerForDismissedController(dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning?
    {
         // 返回消失動(dòng)畫(huà)
        return CustomControllerDismissAnimator()
    }
}

萬(wàn)事俱備

@IBAction func doTest(sender: AnyObject) {
    let vc = CustomPresentViewController(nibName: nil, bundle: nil)
    
    presentViewController(vc,
                          animated: true,
                          completion: nil)
}

效果如下：

record.gif

Demo地址##