volumeHide.swift

import UIKit
import MediaPlayer

class ViewController: UIViewController {

  override func viewDidLoad() {
    super.viewDidLoad()
    
    let volumeView = MPVolumeView(frame: CGRect(x: 100, y: 100, width: 100, height: 100))
    
    volumeView.isHidden = false
    volumeView.alpha = 0.01
    
    view.addSubview(volumeView)
  }
}