Swift 在tvOS 12的TVUIKit中使用TVPosterImage

TVOS12有一个新的框架，它引入了锁定视图。我感兴趣的课程是，基本上是这样设计的：

Swift 4.2

open class TVPosterView : TVLockupView { // One may use UIControl to implement it in iOS
    public init(image: UIImage?)
    open var image: UIImage? // default is nil
    open var title: String?
    open var subtitle: String?
}

import UIKit
import TVUIKit

class SecondViewController: UIViewController {

    var myPoster = TVPosterView()
    var myMonogram = TVMonogramView()

    override func viewDidLoad() {
        super.viewDidLoad()

        myPoster.frame = CGRect(x: 100, y: 100, width: 550, height: 625)
        myPoster.image = UIImage(named: "image1.png")
        myPoster.imageView.masksFocusEffectToContents = true
        myPoster.title = "Poster"
        myPoster.subtitle = "This is the poster subtitle"

        self.view.addSubview(myPoster)

        var myName = PersonNameComponents()
        myName.givenName = "Michele"
        myName.familyName = "Dall'Agata"

        myMonogram.frame = CGRect(x: 700, y: 100, width: 500, height: 475)
        myMonogram.image = UIImage(named: "image2.png")
        myMonogram.title = "Monogram"
        myMonogram.subtitle = "This is the Monogram subtitle"
        myMonogram.personNameComponents = myName

        self.view.addSubview(myMonogram)

        print(myMonogram.personNameComponents)
    }
}

在我的故事板中，我添加了UIView元素，并且正确地（至少我希望如此。昨天IB代理不断崩溃！）在Identity Inspector中将其类更改为TVPosterView。然后在我的UIViewController中，我定义了：

@IBOutlet var aPosterView: TVPosterView!

override func viewDidLoad() {
        super.viewDidLoad()

        if let myIcon = UIImage(named: "icon.png") {
            self.aPosterView = TVPosterView(image: myIcon)
            self.aPosterView.title = "My Title"
            self.aPosterView.subtitle = "A Sub Title"
        }
        else {
            print("ERROR: I couldn't load the icon!")
        }
    }
}

它编译时没有任何警告。当我运行它时，它只显示UIView白色背景，没有任何变化。我做了一些测试，试图添加UIImageView，但都没有结果（当然，当我将UIImageView的映像设置为self.aPosterView.image时，它们是不确定的）

---

我远非专家，我几周前才开始学习。你知道我错过了什么吗？我认为这个概念是，一旦我开始上课，这个框架就负责显示带有（可选）标题和字幕的海报，还负责所有漂亮的动画

最终我成功地使它以编程方式工作。我测试了TVPosterView和TVPosterView（基本上是一个圆形按钮）。以下代码适用于tvOS 12 beta 5上的Xcode 10 beta 5：

Swift 4.2

open class TVPosterView : TVLockupView { // One may use UIControl to implement it in iOS
    public init(image: UIImage?)
    open var image: UIImage? // default is nil
    open var title: String?
    open var subtitle: String?
}

import UIKit
import TVUIKit

class SecondViewController: UIViewController {

    var myPoster = TVPosterView()
    var myMonogram = TVMonogramView()

    override func viewDidLoad() {
        super.viewDidLoad()

        myPoster.frame = CGRect(x: 100, y: 100, width: 550, height: 625)
        myPoster.image = UIImage(named: "image1.png")
        myPoster.imageView.masksFocusEffectToContents = true
        myPoster.title = "Poster"
        myPoster.subtitle = "This is the poster subtitle"

        self.view.addSubview(myPoster)

        var myName = PersonNameComponents()
        myName.givenName = "Michele"
        myName.familyName = "Dall'Agata"

        myMonogram.frame = CGRect(x: 700, y: 100, width: 500, height: 475)
        myMonogram.image = UIImage(named: "image2.png")
        myMonogram.title = "Monogram"
        myMonogram.subtitle = "This is the Monogram subtitle"
        myMonogram.personNameComponents = myName

        self.view.addSubview(myMonogram)

        print(myMonogram.personNameComponents)
    }
}

---

不过，我没有用ScaleSpectFit缩放海报的图像。另外，我的第一张图像是透明的，只选择了一个完全适合方形图像加上标题的框架大小（因此不需要侧面匹配），发光效果在角落变得透明。否则，整个图像是不透明的，使用了它自己的（相当小的）圆角。

最终我设法使它以编程方式工作。我测试了TVPosterView和TVPosterView（基本上是一个圆形按钮）。以下代码适用于tvOS 12 beta 5上的Xcode 10 beta 5：

Swift 4.2

open class TVPosterView : TVLockupView { // One may use UIControl to implement it in iOS
    public init(image: UIImage?)
    open var image: UIImage? // default is nil
    open var title: String?
    open var subtitle: String?
}

import UIKit
import TVUIKit

class SecondViewController: UIViewController {

    var myPoster = TVPosterView()
    var myMonogram = TVMonogramView()

    override func viewDidLoad() {
        super.viewDidLoad()

        myPoster.frame = CGRect(x: 100, y: 100, width: 550, height: 625)
        myPoster.image = UIImage(named: "image1.png")
        myPoster.imageView.masksFocusEffectToContents = true
        myPoster.title = "Poster"
        myPoster.subtitle = "This is the poster subtitle"

        self.view.addSubview(myPoster)

        var myName = PersonNameComponents()
        myName.givenName = "Michele"
        myName.familyName = "Dall'Agata"

        myMonogram.frame = CGRect(x: 700, y: 100, width: 500, height: 475)
        myMonogram.image = UIImage(named: "image2.png")
        myMonogram.title = "Monogram"
        myMonogram.subtitle = "This is the Monogram subtitle"
        myMonogram.personNameComponents = myName

        self.view.addSubview(myMonogram)

        print(myMonogram.personNameComponents)
    }
}

不过，我没有用ScaleSpectFit缩放海报的图像。另外，我的第一张图像是透明的，只选择了一个完全适合方形图像加上标题的框架大小（因此不需要侧面匹配），发光效果在角落变得透明。否则，整个图像是不透明的，使用它自己的（相当小的）圆角