iOS 7: MPMusicPlayerController volume deprecated. How to change device volume now?
To answer you question exactly: Yes there is other way to change system volume without user interaction. Until recent times I used to think that changing volume using MPVolumeView programmatically is possible only using private API. But I have just verified, that changing the value of volumeSlider and faking slider’s touchUP event works: MPVolumeView* volumeView … Read more