remoteControlReceivedWithEvent called on iOS 7.0 device but not iOS 8.0

Question

I have an application that plays audio in the background. I am trying to fix a bug where the audio controls (play/pause), on the home screen (etc.), DO NOT work on iOS 8.0+

Answer 1

In your ViewController add

override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated)

        UIApplication.sharedApplication().beginReceivingRemoteControlEvents()
        self.becomeFirstResponder()
}

override func remoteControlReceivedWithEvent(event: UIEvent) {
        // your stuff
    }

In AppDelegate add

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

var error: NSError?
        AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback, error: &error)
        AVAudioSession.sharedInstance().setActive(true, error: &error)
}

SWIFT 3

UIApplication.shared.beginReceivingRemoteControlEvents()
self.becomeFirstResponder()

do {
    try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
    try AVAudioSession.sharedInstance().setActive(true)
} catch {
    print("hmmm...")
}