ios - how to record screen video in swift? -

i doing guess song game app , need record screen when user guessing , capture device's audio output well. want app support ios8 , "replaykit" off table, sdk should use? beginner, if there's example code more help，thanks.

using apple's replaykit, can let user record gameplay, or in case, whatever user doing.

a link wwdc 2015 presentation included here

use these functions start , stop recording:

func startrecording() {         let recorder = rpscreenrecorder.sharedrecorder()          recorder.startrecordingwithmicrophoneenabled(true) { [unowned self] (error) in             if let unwrappederror = error {                 print(unwrappederror.localizeddescription)             } else {                 self.navigationitem.rightbarbuttonitem = uibarbuttonitem(title: "stop", style: .plain, target: self, action: "stoprecording")             }         }     }      func stoprecording() {         let recorder = rpscreenrecorder.sharedrecorder()          recorder.stoprecordingwithhandler { [unowned self] (preview, error) in             self.navigationitem.rightbarbuttonitem = uibarbuttonitem(title: "start", style: .plain, target: self, action: "startrecording")              if let unwrappedpreview = preview {                 unwrappedpreview.previewcontrollerdelegate = self                 self.presentviewcontroller(unwrappedpreview, animated: true, completion: nil)             }         }     }