swift - 如何将 AVPlayerLayer 显示为全屏？

Question

在 Main.storyboard 窗口中添加了一个 View Controller 组件。

View as: Iphone8 选项在 Main.storyboard 窗口中被选中

TestViewController.swift 文件已创建并显示为引用:

UIView 组件已添加

为 UIView 组件添加约束:

UIView 的背景颜色改变了:

outlet 是为 UIView 创建的:

然后下面的代码写在TestViewController.swift文件中

import UIKit
import AVFoundation
import AVKit

class TestViewController: UIViewController {

private var player: AVPlayer!
@IBOutlet weak var videoUiViewOutlet: UIView!

override func viewDidLoad() {
    super.viewDidLoad()
    self.setupView()
}

private func setupView()
{
    let path  = URL(fileURLWithPath: Bundle.main.path(forResource: "clouds", ofType: "mp4")!)
    let player = AVPlayer(url: path)
    self.player = player
    let newLayer = AVPlayerLayer(player: player)
    newLayer.frame = self.videoUiViewOutlet.frame
    self.videoUiViewOutlet.layer.addSublayer(newLayer)
    newLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill

    player.play()

    player.actionAtItemEnd = AVPlayer.ActionAtItemEnd.none

    NotificationCenter.default.addObserver(self, selector: #selector(self.videoDidPlayToEnd(notification:)),
                                           name: NSNotification.Name(rawValue: "AVPlayerItemDidPlayToEndTimeNotification"), object: player.currentItem)

    NotificationCenter.default.addObserver(self, selector: #selector(enteredBackground), name: UIApplication.didEnterBackgroundNotification, object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(enteredForeground), name: UIApplication.willEnterForegroundNotification, object: nil)
}

@objc func videoDidPlayToEnd(notification: Notification)
{
    let player: AVPlayerItem = notification.object as! AVPlayerItem
    player.seek(to: .zero, completionHandler: nil)
}

@objc func enteredBackground() {
    player.pause()
}

@objc func enteredForeground() {
    player.play()
}
}

然后应用程序在 Iphone 8 Plus 中运行。这是 Iphone 8 Plus 的屏幕截图:

我的问题:我希望在所有设备上全屏观看视频。我该如何解决这个问题？

Answer 1

您需要在 viewDidLayoutSubviews 中设置 frame，其中存在正确的 bounds

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()
    newLayer.frame = self.videoUiViewOutlet.bounds 
}