How to embed a local video into a UIView in ios 12 - ios

Question

The code I was using to embed a local video in a UIView isn't working on IOS 12. The audio is playing but I get a black screen.
from apple developer site:
Do not subclass AVPlayerViewController. Overriding this class’s methods is unsupported and results in undefined behavior.
the code works fine on IOS 11, any idea what do I need to change in the code?
thanks
import UIKit
import AVFoundation
import AVKit
class ViewController: UIViewController {
var avPlayer: AVPlayer!
override func viewDidLoad() {
super.viewDidLoad()
let filepath: String? = Bundle.main.path(forResource: "qidong", ofType: "mp4")
let fileURL = URL.init(fileURLWithPath: filepath!)
avPlayer = AVPlayer(url: fileURL)
let avPlayerController = AVPlayerViewController()
avPlayerController.player = avPlayer
avPlayerController.view.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height)
avPlayerController.showsPlaybackControls = false
avPlayerController.player?.play()
self.view.addSubview(avPlayerController.view)
}
}

Answer 1

You need to add the AVPlayerViewController as a child view controller so something like this:
import UIKit
import AVFoundation
import AVKit
class ViewController: UIViewController {
var avPlayer: AVPlayer!
override func viewDidLoad() {
super.viewDidLoad()
let filepath: String? = Bundle.main.path(forResource: "qidong", ofType: "mp4")
let fileURL = URL.init(fileURLWithPath: filepath!)
avPlayer = AVPlayer(url: fileURL)
let avPlayerController = AVPlayerViewController()
avPlayerController.player = avPlayer
avPlayerController.view.frame = CGRect(x: 0, y: 0, width: self.view.frame.size.width, height: self.view.frame.size.height)
avPlayerController.showsPlaybackControls = false
avPlayerController.player?.play()
self.addChild(avPlayerController)
self.view.addSubview(avPlayerController.view)
avPlayerController.didMove(toParent: self)
}
If you are not doing that then the AVPlayerViewController is probably getting released early.
Another minor issue but don't use the size of the UIScreen but the frame of the view controllers view instead (or even better do something like use auto layout).