How to get System Volume iOS?

Question

I found an example here, but it does not work on ios6.1.3 (iphone 4s). always return 0.187500

Code:

Float32 volume;
UInt32 dataSize = sizeof(Float32);

AudioSessionInitialize (NULL, NULL, NULL, NULL);
AudioSessionGetProperty (
                     kAudioSessionProperty_CurrentHardwareOutputVolume,
                     &dataSize,
                     &volume
                     );
NSLog(@"%f", volume);

[AVAudioSession sharedInstance].outputVolume - also return 0.187500

score 4 · Accepted Answer · answered Aug 15 '13 at 16:39

4

You need to initialize the audio session with:

AudioSessionInitialize (NULL, NULL, NULL, NULL);

in viewDidLoad or similar.

However, it's generally a better idea to make use of the new AVAudioSession class if you're targeting iOS 6+, which handles that for you:

float volume = [AVAudioSession sharedInstance].outputVolume;

answered Aug 15 '13 at 16:39

Hampus Nilsson

6,692
1
25
29

I have tried paste AudioSessionInitialize (NULL, NULL, NULL, NULL);, now always return 0.187500, volume on full. – user2168735 Aug 15 '13 at 16:53
[AVAudioSession sharedInstance].outputVolume - also return 0.187500 – user2168735 Aug 15 '13 at 17:04

score 4 · Answer 2 · answered Sep 17 '14 at 23:23

4

float volume = [[AVAudioSession sharedInstance] outputVolume];

answered Sep 17 '14 at 23:23

akanki07

71
8

1

The best answers have some explanation as well as code. Please consider adding some context. – ChrisGPT was on strike Sep 17 '14 at 23:43

How to get System Volume iOS?

2 Answers2

Linked