Handle Remote Control Commands

handle-remote-control-commands.swift

// https://hashaam.com/2017/07/19/handle-remote-control-commands/

import UIKit
import MediaPlayer

class ViewController: UIViewController {

	var player: AVPlayer?

	func setupRemoteCommandCenter(enable: Bool) {
        
	    let remoteCommandCenter = MPRemoteCommandCenter.shared()
    
	    if enable {
        
	        remoteCommandCenter.pauseCommand.addTarget(self, action: #selector(remoteCommandCenterPauseCommandHandler))
	        remoteCommandCenter.playCommand.addTarget(self, action: #selector(remoteCommandCenterPlayCommandHandler))
	        remoteCommandCenter.stopCommand.addTarget(self, action: #selector(remoteCommandCenterStopCommandHandler))
	        remoteCommandCenter.togglePlayPauseCommand.addTarget(self, action: #selector(remoteCommandCenterPlayPauseCommandHandler))
        
	    } else {
        
	        remoteCommandCenter.pauseCommand.removeTarget(self, action: #selector(remoteCommandCenterPauseCommandHandler))
	        remoteCommandCenter.playCommand.removeTarget(self, action: #selector(remoteCommandCenterPlayCommandHandler))
	        remoteCommandCenter.stopCommand.removeTarget(self, action: #selector(remoteCommandCenterStopCommandHandler))
	        remoteCommandCenter.togglePlayPauseCommand.removeTarget(self, action: #selector(remoteCommandCenterPlayPauseCommandHandler))
        
	    }
    
	    remoteCommandCenter.pauseCommand.isEnabled = enable
	    remoteCommandCenter.playCommand.isEnabled = enable
	    remoteCommandCenter.stopCommand.isEnabled = enable
	    remoteCommandCenter.togglePlayPauseCommand.isEnabled = enable
    
	}

	deinit {        
    	    setupRemoteCommandCenter(enable: false)
	}

	func remoteCommandCenterPauseCommandHandler() {
        
	    // handle pause
	    player?.pause()
    
	}

	func remoteCommandCenterPlayCommandHandler() {
    
	    // handle play
	    player?.play()
    
	}

	func remoteCommandCenterStopCommandHandler() {
    
	    // handle stop
	    player?.pause()
    
	}

	func remoteCommandCenterPlayPauseCommandHandler() {
    
	    // handle play pause
	    if player?.rate == 0.0 {
	        player?.play()
	    } else {
	        player?.pause()
	    }
    
	}

	func setupPlayer() {
        
	    let streamURL = URL(string: "https://audio.stream.m3u8")!
	    self.player = AVPlayer(url: streamURL)
	    self.player?.play()
    
	}

	@IBAction func playButtonHandler(btn: UIButton) {
        
	    setupRemoteCommandCenter(enable: true)
    
	    setupPlayer()
    
	}

}