How to change volume programmatically on iOS 11.4

Question

Before, I was setting sound volume programmatically using this approach:

MPVolumeView *volumeView = [[MPVolumeView alloc] init];
UISlider *volumeViewSlider =         


        

Answer 1

I just added the MPVolumeView as a subview to another view (that was never drawn on screen).

This had to be done prior to any attempt to set or get the volume.

private let containerView = UIView()
private let volumeView = MPVolumeView()

func prepareWorkaround() {
    self.containerView.addSubview(self.volumeView)
}