IOS Query current audio volume

Question

I am programming an app to allow for locally stored mp3 file playback as well as streaming from a server.

I use

  AVAudioPlayer *player;
  AVPlayer *player2;

depending on the type of playback. How do I query what the device volume level is initially so that I can set my volume.slider to its initial value?

Answer 1

First, import:

#import <AVFoundation/AVAudioSession.h>

Then get The system wide output volume set by the user using:

float volume = [[AVAudioSession sharedInstance] outputVolume];