How to increase iPhone volume programmatically

Question

In my app I have to play the siren sound on tapping the button, I can able to play it when ringer volume is set to some value, but my problem is when user kept their ringer volume to zero, how can I play it with maximum sound?

Answer 1

Officially you can't do this. As a smartphones user, I wouldn't appreciate to set my volume at 10% and have an app that rings at max volume.

You can however try to use Celestial.framework, but your application will be rejected from the App Store.

Answer 2

try this code ,it only work in device

[[MPMusicPlayerController applicationMusicPlayer] setVolume:setvalue];