How to programmatically silence the ringer or change the ringer tone on iOS5

问题

Is there a way to reduce the volume of the ringer or change the ringer tone on iOS5?

I checked out the Celestial framework, but can't instantiate AVSystemController. :-(

I don't care if this get's the app rejected in the AppStore as it will never be submitted.

回答1:

Yes. Use AVSystemController. You don't instantiate it. It's a singleton.

http://code.google.com/p/iphone-dev/source/browse/trunk/include/include/Celestial/AVSystemController.h?r=136

[[AVSystemController sharedAVSystemController] setVolumeTo:10.0 forCategory:@"Ringtone"];

回答2:

This might be what you are looking for: Override ringer volume in iPhone apps

Basically, you set the volume using AVAudioPlayer on the -(void)viewDidLoad method of the view you are displaying on

来源：https://stackoverflow.com/questions/9320725/how-to-programmatically-silence-the-ringer-or-change-the-ringer-tone-on-ios5