ios - 以编程方式呈现新的 ViewController [Swift 3]

Question

我想做的是使用 Swift 3 以编程方式呈现一个新的 View Controller ，其中包含动画淡出然后淡入以及弹出窗口然后弹出窗口，具体取决于用户输入的 View Controller 。这样我的应用程序感觉更现代，不那么陈旧和 block 状。

这是我当前用于呈现新 View Controller 的方法。它有效，但它相当生硬和机械化:

let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)

let ExampleVC = storyBoard.instantiateViewController(withIdentifier: "ExampleVC")
//ExampleVC standing for ExampleViewController 
self.navigationController?.pushViewController(ExampleVC, animated: false) 

这是一个动画 UIViews 的方法，但它不适用于 UIViewControllers

func popIn(yourView : UIView) {

        yourView.transform = CGAffineTransform(scaleX: 0.01, y: 0.01)
        UIView.animateKeyframes(withDuration: 0.2, delay: 0.0, options: UIViewKeyframeAnimationOptions.calculationModeDiscrete, animations: {
            yourView.transform = .identity
        }, completion: nil)
        self.view.addSubview(yourView)
    }

我需要与此类似的东西，但用于 UIViewController

更新

这里是您可以用来以一种很酷的方式呈现新的 View Controller 以使您的应用程序更现代

let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let VC = storyboard.instantiateViewController(withIdentifier: "Example") //<<< make sure you enter in your storyboard ID here or you will crash your app
    VC.modalTransitionStyle = .crossDissolve //you can change this to do different animations
    VC.view.layer.speed = 0.1 //adjust this to animate at different speeds
    self.navigationController?.present(VC, animated: true, completion: nil)

如果你有任何问题，请发表评论，我可以帮助你们解决问题

Answer 1

var storyboard = UIStoryboard(name: "Main", bundle: nil)
var ivc = storyboard.instantiateViewController(withIdentifier: "ExampleVC")
ivc.modalTransitionStyle = .crossDissolve
ivc.view.layer.speed = 0.1
self.present(ivc, animated: true, completion: { _ in })

检查此动画代码以查看 Controller