AppDelegate.swift

//
//  AppDelegate.swift
//  RemoteReceiver
//  Receive remote events from Bluetooth head set or player.
//  Created by michal on 06/11/2018.
//  Copyright © 2018 michal. All rights reserved.
//

import UIKit
import MediaPlayer
import AVFoundation

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    var myApplication: UIApplication!
    
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        try! AVAudioSession.sharedInstance()
            .setCategory(AVAudioSession.Category.playback,
                         mode: AVAudioSession.Mode.default)
        try! AVAudioSession.sharedInstance().setActive(true, options: [])

        let mrcc = MPRemoteCommandCenter.shared()
        mrcc.playCommand.addTarget { (event) -> MPRemoteCommandHandlerStatus in
            print(event)
            return .success
        }
        mrcc.togglePlayPauseCommand.addTarget { event -> MPRemoteCommandHandlerStatus in
            print(event)
            return .success
        }
        mrcc.stopCommand.addTarget { event -> MPRemoteCommandHandlerStatus in
            print(event)
            return .success
        }
        mrcc.nextTrackCommand.addTarget { event in
            print(event)
            return .success
        }
        mrcc.previousTrackCommand.addTarget { event in
            print (event)
            return .success
        }
       
        return true
    }
}

Receive remote events from Bluetooth head set or player.