iOS detect/block screen recording using QuickTime player

Question

I want to block screen recording or video output per my app using QuickTime Player.

I had detected hdmi output and airplay with UIScreen. But QuickTime Play

Answer 1

Thus don't know detect QuickTime Player recording.

But I Found a solution with some trick.

If QuickTime Player recording is running, AVAudioSession's output portType has been changed to HDMIOutput.

So I coding as follows...(Swift 2.2)

func checkOutputPortType() {
    let asRoute = AVAudioSession.sharedInstance().currentRoute
    for output in asRoute.outputs {
        if output.portType == AVAudioSessionPortHDMI {
            // something you want..
        }
    }
}

Insert that function in ViewDidLoad and added AVAudioSessionRouteChangeNotification notification.

NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(checkOutputPortType), name: AVAudioSessionRouteChangeNotification, object: nil)

Thanks.