Sto giocando video nella mia app Swift (iOS 9) con il seguente codice:AVPlayerController: Schermo intero Autolayout emette
let fileUrl = NSBundle.mainBundle().URLForResource("welcome", withExtension: ".mp4")
videoItem = AVPlayerItem(URL: fileUrl!)
videoPlayer = AVPlayer(playerItem: videoItem)
videoPlayer.addObserver(self, forKeyPath: "rate", options: [.New], context: nil)
videoPlayerController.player = videoPlayer
videoPlayerController.showsPlaybackControls = false
videoPlayerController.view.frame = CGRectMake(0, 0, playerView.frame.size.width, playerView.frame.size.height)
playerView.insertSubview(videoPlayerController.view, belowSubview: videoCoverView)
videoPlayerController.willMoveToParentViewController(self)
addChildViewController(videoPlayerController)
videoPlayerController.didMoveToParentViewController(self)
playerView.bringSubviewToFront(btnPlay)
let asset = AVAsset(URL: fileUrl!)
let imageGenerator = AVAssetImageGenerator(asset: asset)
let time = CMTime(seconds: asset.duration.seconds/2.0, preferredTimescale: 1)
do {
let imageRef = try imageGenerator.copyCGImageAtTime(time, actualTime: nil)
let coverImage = UIImage(CGImage: imageRef)
videoCoverView.image = coverImage
} catch {
}
videoPlayerController
è un'istanza di AVPlayerViewController
. playerView
viene aggiunto tramite lo storyboard e ha l'impostazione di Autolayout su di esso. Affronto i problemi di Autloayout una volta che i controlli del player di AVPlayerViewController vengono visualizzati e anche quando provo ad andare in modalità a schermo intero tramite i controlli del player. Ecco il log che viene stampato.
2016-05-07 15:18:19.325 VoxTrain[2085:66307] Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints)
(
"<NSAutoresizingMaskLayoutConstraint:0x7fb6a2a3f2c0 h=-&- v=-&- _UIBackdropContentView:0x7fb6a2a02310.width == _UIBackdropView:0x7fb6a053bf90.width>",
"<NSLayoutConstraint:0x7fb6a2992800 H:|-(14)-[UILabel:0x7fb6a2991220'Hi-Speed Scrubbing'] (Names: '|':_UIBackdropContentView:0x7fb6a2a02310)>",
"<NSLayoutConstraint:0x7fb6a2992850 H:[UILabel:0x7fb6a2991220'Hi-Speed Scrubbing']-(14)-| (Names: '|':_UIBackdropContentView:0x7fb6a2a02310)>",
"<NSLayoutConstraint:0x7fb6a29649a0 H:|-(0)-[_UIBackdropView:0x7fb6a053bf90] (Names: '|':UIView:0x7fb6a0549220)>",
"<NSLayoutConstraint:0x7fb6a298b8a0 H:[_UIBackdropView:0x7fb6a053bf90]-(0)-| (Names: '|':UIView:0x7fb6a0549220)>",
"<NSLayoutConstraint:0x7fb6a296f440 H:|-(0)-[UIView:0x7fb6a0549220] (Names: '|':AVAlphaUpdatingView:0x7fb6a053dae0)>",
"<NSLayoutConstraint:0x7fb6a296f490 H:[UIView:0x7fb6a0549220]-(0)-| (Names: '|':AVAlphaUpdatingView:0x7fb6a053dae0)>",
"<NSLayoutConstraint:0x7fb6a2a40cc0 'UIView-Encapsulated-Layout-Width' H:[AVAlphaUpdatingView:0x7fb6a053dae0(0)]>"
)
Dopo l'impostazione iniziale, ho cercato di impostare autolayout
su videoPlayerController's
vista con l'impostazione translatesAutoresizingMaskIntoConstraints
false. Ma il problema persiste ancora. Come posso risolvere questi problemi?
Duplicate: http://stackoverflow.com/q/32860362/2415822 – JAL