Android: MediaPlayer setVolume function not working

Question

I am trying to play sound via media player on STREAM_SYSTEM

using

mediaPlayer.setVolume(1.0f , 1.0f);

or

mediaPlayer.setVolume(0.90f , 0.90f);

But it is playing on vol as per Hardware volume controls in settings.

Basically this line has no effect.

I have added

permissions "Modify..." as well in Manifest

But i saw links in stackoverflow where this API works.

I don't wanna go to API

AudioManager.setStreamVol()....

as it sets stream vol for all apps

What is problem that this setVol API is not working??

Can anybody give a link to working sample??

Does http://stackoverflow.com/questions/5215459/android-mediaplayer-setvolume-function help this? — Karthikeyan, Jan 22 '15 at 11:24
@Karthikeyan thanks.But i have been through this link.I am using the same — Rohit Singhal, Jan 22 '15 at 11:29
Is any error or Warning messaging displaying in logcat. If yes, can you post it. — Karthikeyan, Jan 22 '15 at 11:32
No error and no warnings...can you give me any working sample using setVolumeAPI MediaPlayer Thanks — Rohit Singhal, Jan 22 '15 at 12:05
assign the StreamVolume to control the mediaplayer volume along with profile volume of that type — Santhosh, Jan 22 '15 at 12:32
@santhosh Then there is no use of setVolumeAPI of MediaPlayer , i can do the same via using API of AudioManager. — Rohit Singhal, Jan 22 '15 at 12:34

score 8 · Answer 1 · edited May 05 '16 at 12:47

8

I faced the same issue. I thought that if I use 0.5f as parameter, I could tell the difference. I tried 0.2f, still no difference. So I thought there was a problem indeed. I finally tried 0.02f just in case, and finally I had a lower volume.

Sample:

replace your

mediaPlayer.setVolume(0.90f , 0.90f);

with

mediaPlayer.setVolume(0.09f , 0.09f);

edited May 05 '16 at 12:47

Max

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answered Jun 29 '15 at 02:40

Georges

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12

you can also divide the current stream volume by `15f` like: `float volume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC) / 15f;` and then `mediaPlayer.setVolume(volume, volume);` – Pierre Sep 13 '18 at 05:29

score 1 · Answer 2 · answered Jan 22 '15 at 11:28

1

You must put the volume value between 0.0f and 1.0f. So 1.0f is 100% of the volume. Because of that your line has not effect.

answered Jan 22 '15 at 11:28

Lennon Spirlandelli

2,971
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I have tried .98f as well , but it still sounds as same vol as of STREAM_SYSTEM.If it is mute then no sound in played by player – Rohit Singhal Jan 22 '15 at 11:38
Try to do like this question http://stackoverflow.com/questions/6742174/controlling-volume-in-mediaplayer – Lennon Spirlandelli Jan 22 '15 at 12:21
Maybe it's missing – Lennon Spirlandelli Jan 22 '15 at 12:21

score 0 · Answer 3 · edited Jan 22 '15 at 12:37

AudioManager audioManager;
int actualVolume;
audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
actualVolume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, actualVolume + 1, AudioManager.FLAG_SHOW_UI);

The above code is taken from my working project, where it is used to increase the volume of the system (I used it for TV). You can use actualVolume - 1 to lower down the volume.

score -1 · Answer 4 · answered Jan 22 '15 at 11:33

Using AudioManager you can control the volume of media player.

AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, 20, 0);

also from MediaPlayer (But I didn't try that)

public void  setVolume  (float leftVolume, float rightVolume)

Since: API Level 1:

Sets the volume on this player. This API is recommended for balancing the output of audio streams within an application. Unless you are writing an application to control user settings, this API should be used in preference to setStreamVolume(int, int, int) which sets the volume of ALL streams of a particular type. Note that the passed volume values are raw scalars. UI controls should be scaled logarithmically.

Parameters:

leftVolume left volume scalar

rightVolume right volume scalar

For the same reason as mentioned in Doc, I am using setVolume (float leftVolume, float rightVolume) But it is playing at volume as that of stream on which i am playing — Rohit Singhal, Jan 22 '15 at 11:39
At least mentioned your source: https://stackoverflow.com/questions/8238231/android-how-to-set-mediaplayer-volume-programmatically — Kambiz, Feb 13 '18 at 22:09

Android: MediaPlayer setVolume function not working

4 Answers4

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