Get and set volume on iOS

Question

How to get and set the volume in iOS xamarin.forms?

I have written a dependacy service in android which sets and gets the volume of the music stream on android.

I want to have a slider with the current volume set by default and allower user to set the volume by sliding the slider. Also I would like to get the maximum allowed volume level for setting the maximum limit of the slider.

Here is how I have done in android, and is working perfectly on andriod device:

public int MaxVolume()
{
    AudioManager audioMan = (AudioManager)global::Android.App.Application.Context.GetSystemService(Context.AudioService);
    return audioMan.GetStreamMaxVolume(Android.Media.Stream.Music);
}

public void SetVolume(int volume)
{
    AudioManager audioMan = (AudioManager)global::Android.App.Application.Context.GetSystemService(Context.AudioService);
    audioMan.SetStreamVolume(Android.Media.Stream.Music, volume, 0);
}

public int GetCurrentVolume()
{
    AudioManager audioMan = (AudioManager)global::Android.App.Application.Context.GetSystemService(Context.AudioService);
    return audioMan.GetStreamVolume(Android.Media.Stream.Music);
}

How do I achieve same on iOS? I tried float volume = AVAudioSession.SharedInstance().OutputVolume;, but doesn't give me volume.

Danil Kurkin · Answer 1 · 2016-05-26T09:31:49.013

0

To Specify volume u need to use AVPlayer

 AVAudioSession.SharedInstance().SetCategory(AVAudioSessionCategory.Playback , AVAudioSessionCategoryOptions.MixWithOthers);

 var player = new AVPlayer(audioFilePath);
 player.Volume = 0.2f;  
 player.Play();

Where sound level goes from 0.0f to 1f

More about AVPlayer

If you need to rise or low it just add the value. Also you can have a look at MPVolumeView This is a slider that changes volume programmatically

edited May 26 '16 at 09:31

answered May 25 '16 at 13:16

Danil Kurkin

283
2
11

How do I get maximum volume? – Arti May 26 '16 at 04:29
Why do you need to know the volume level? – Danil Kurkin May 26 '16 at 09:29
That is because I have a slider which allows use to control the volume and I need to set maximum volume to the slider. – Arti May 26 '16 at 09:31
Check out MPVolumeView – Danil Kurkin May 26 '16 at 09:32

score 0 · Answer 2 · answered Dec 01 '17 at 16:16

I solved it like this (get the current output volume only):

AVAudioSession.SharedInstance().SetActive(true);
return AVAudioSession.SharedInstance().OutputVolume;

The first instruction is required to get updated values, the second returns a float between 0 and 1 indicating the current output volume.

Thanks to these references:

output volume: Get System Volume iOS

update the value: How to get System Volume iOS?

Get and set volume on iOS

2 Answers2