Change music in lockscreen

Question

Is it possible for my app to skip or pause the music that is currently being played while the device (iPhone) is locked (for example after a given preset time)?

Answer 1

To play some music

func playSpawnedDot() {
    var alertSound: NSURL = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("spawnDot", ofType: "mp3")!)!
    var error:NSError?
    audioPlayer = AVAudioPlayer(contentsOfURL: alertSound, error: &error)
    audioPlayer.prepareToPlay()

    if volumeBool {
        audioPlayer.play()
    }
}

And play while app is in background too add this

AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryAmbient, error: nil)
AVAudioSession.sharedInstance().setActive(true, error: nil)

To stop the music after n seconds do have a look in background modes Background modes IOS