iosobjective-cios9mpmusicplayercontrollermpvolumeview

iOS 9: How to change volume programmatically without showing system sound bar popup?


I have to change the volume on iPad and using this code:

[[MPMusicPlayerController applicationMusicPlayer] setVolume:0];

But this changing volume and showing system volume bar on iPad. How to change the sound without showing the volume bar?

I know, setVolume: is deprecated, and everybody says to use MPVolumeView. If this is the only way to solve my problem, then how to change the volume using MPVolumeView? I don't see any method in MPVolumeView that changes the sound.
Should I use some another class together with MPVolumeView?

But it's preferable to use MPMusicPlayerController.

Thank you for advice!


Solution

  • MPVolumeView has a slider, and by changing the value of the slider, you can change the device volume. I wrote an MPVolumeView extension to easily access the slider:

    extension MPVolumeView {
        var volumeSlider:UISlider {
            self.showsRouteButton = false
            self.showsVolumeSlider = false
            self.hidden = true
            var slider = UISlider()
            for subview in self.subviews {
                if subview.isKindOfClass(UISlider){
                    slider = subview as! UISlider
                    slider.continuous = false
                    (subview as! UISlider).value = AVAudioSession.sharedInstance().outputVolume
                    return slider
                }
            }
            return slider
        }
    }