user1591668 user1591668 - 6 months ago 50
iOS Question

IOS swift avplayer inside UiView how can I make it work

I am new to using the AVPlayer for IOS swift and got it working correctly. However I would like the video to play inside a UIView right now the video takes up the whole page as default . I have been trying a few things and nothing works here is my code . I have other content on that page that is why I would like the avplayer inside the UIVIEW which is called newView and when I put the code below it gives me an error. I have been following this example AVPlayerLayer Position in UIView Layer

import UIKit
import AVFoundation
import WebKit
import AVKit

class ExampleTable: UIViewController {
@IBOutlet weak var newView: UIView!

let avPlayerViewController = CustomAVPLayerC()
var playerView: AVPlayer?
var AVLayer: AVPlayerLayer?

override func viewDidAppear(_ animated: Bool) {

let movieURL:NSURL? = NSURL(string: "my url")

playerView = AVPlayer(url: movieURL! as URL)
avPlayerViewController.player = playerView
playerView?.isMuted = true
avPlayerViewController.view.frame = newView.frame
self.present(self.avPlayerViewController, animated: true) {



override func viewDidLoad() {



However when I do the code above I get this error

2017-08-16 15:55:31.770 Yisly[24335:595275] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present modally an active controller <app.ExampleTable: 0x7ff78201a650>.'
*** First throw call stack:
0 CoreFoundation 0x000000010aab9b0b __exceptionPreprocess + 171
1 libobjc.A.dylib 0x0000000109dec141 objc_exception_throw + 48
2 UIKit 0x000000010b910e44 -[UIViewController _presentViewController:withAnimationController:completion:] + 5146
3 UIKit 0x000000010c28e165 -[_UIViewControllerTransitionCoordinator _applyBlocks:releaseBlocks:] + 294
4 UIKit 0x000000010c28a0e4 -[_UIViewControllerTransitionContext _runAlongsideCompletions] + 155
5 UIKit 0x000000010c289dbc -[_UIViewControllerTransitionContext completeTransition:] + 118
6 UIKit 0x000000010b8d3b70 -[UITransitionView notifyDidCompleteTransition:] + 251
7 UIKit 0x000000010b8d37e8 -[UITransitionView _didCompleteTransition:] + 1408
8 UIKit 0x000000010b8d5eb8 -[UITransitionView _transitionDidStop:finished:] + 104
9 UIKit 0x000000010b7e6f07 -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 222
10 UIKit 0x000000010b7e7446 -[UIViewAnimationState animationDidStop:finished:] + 136
11 QuartzCore 0x000000010b5ca68e _ZN2CA5Layer23run_animation_callbacksEPv + 306
12 libdispatch.dylib 0x000000010da4f05c _dispatch_client_callout + 8
13 libdispatch.dylib 0x000000010da3040b _dispatch_main_queue_callback_4CF + 411
14 CoreFoundation 0x000000010aa7e909 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
15 CoreFoundation 0x000000010aa44ae4 __CFRunLoopRun + 2164
16 CoreFoundation 0x000000010aa44016 CFRunLoopRunSpecific + 406
17 GraphicsServices 0x000000010f203a24 GSEventRunModal + 62
18 UIKit 0x000000010b75b0d4 UIApplicationMain + 159
19 Yisly 0x0000000105c10117 main + 55
20 libdyld.dylib 0x000000010da9b65d start + 1
libc++abi.dylib: terminating with uncaught exception of type NSException

Answer Source

You are getting the error message because you are trying to present the same instance of your CustomAVPlayerC that you just added as a child view controller. You don't need to present the VC, try this code which is a little cleaner approach:

@IBOutlet weak var newView: UIView!
let avPlayerViewController = CustomAVPlayerC()
var playerView: AVPlayer?

override func viewDidLoad() {

    guard let movieURL = URL(string: "my url")
        else { return }

    playerView = AVPlayer(url: movieURL)
    avPlayerViewController.player = playerView
    avPlayerViewController.view.frame = newView.bounds
    avPlayerViewController.didMove(toParentViewController: self)

I would recommend going over Apple's documentation on "Implementing a Container View Controller" for best practices in dealing with a container view set up like this.

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