how to increase and decrease the volume programmatically in android

Question

I created the music player app and i want to set the volume up/down programmatically .

I want to implement two another

Answer 1

Following up on solution of jesu, if you want to change volume within Service instead of Activity, replace:

AudioManager audioManager = (AudioManager) getApplicationContext().getSystemService(Context.AUDIO_SERVICE);

with:

AudioManager audioManager;
audioManager = (AudioManager) YourServiceName.this.getSystemService(Context.AUDIO_SERVICE);

Answer 2

This code will set the volume 100 instantly with no feedback to the user when buttonSES is pressed.

public void perform_actionSES(View v) {
Button buttonSES = (Button) findViewById(R.id.buttonSES);

AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, 100, 0);  
}

Answer 3

Create an object for audio manager

AudioManager audioManager = (AudioManager) getApplicationContext().getSystemService(Context.AUDIO_SERVICE);


Button upButton = (Button) findViewById(R.id.upButton);
        upButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

//To increase media player volume               
                audioManager.adjustVolume(AudioManager.ADJUST_RAISE, AudioManager.FLAG_PLAY_SOUND);
            }
        });

        Button downButton = (Button) findViewById(R.id.downButton);
        downButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

//To decrease media player volume
                audioManager.adjustVolume(AudioManager.ADJUST_LOWER, AudioManager.FLAG_PLAY_SOUND);             
            }
        });

The above example used Button label

for volume up and down code

@Override
    public boolean dispatchKeyEvent(KeyEvent event) {
        int action = event.getAction();
        int keyCode = event.getKeyCode();
        switch (keyCode) {
            case KeyEvent.KEYCODE_VOLUME_UP:
                if (action == KeyEvent.ACTION_DOWN) {
                    audioManager.adjustVolume(AudioManager.ADJUST_RAISE, AudioManager.FLAG_PLAY_SOUND);
                }
                return true;
            case KeyEvent.KEYCODE_VOLUME_DOWN:
                if (action == KeyEvent.ACTION_DOWN) {
                    audioManager.adjustVolume(AudioManager.ADJUST_LOWER, AudioManager.FLAG_PLAY_SOUND);
                }
                return true;
            default:
                return super.dispatchKeyEvent(event);
        }
    }

Answer 4

Try below code

audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

seekbar.setMax(audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC));

seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
  @Override
  public void onProgressChanged(SeekBar seekBar, int newVolume, boolean b) {
    textview.setText("Media Volume : " + newVolume);
    audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, newVolume, 0);
  }

  @Override
  public void onStartTrackingTouch(SeekBar seekBar) {}

  @Override
  public void onStopTrackingTouch(SeekBar seekBar) {}
});

Answer 5

Below code worked great

There are several streams available in Android using which audio can be managed

 /** The audio stream for phone calls */
    public static final int STREAM_VOICE_CALL = AudioSystem.STREAM_VOICE_CALL;
    /** The audio stream for system sounds */
    public static final int STREAM_SYSTEM = AudioSystem.STREAM_SYSTEM;
    /** The audio stream for the phone ring */
    public static final int STREAM_RING = AudioSystem.STREAM_RING;
    /** The audio stream for music playback */
    public static final int STREAM_MUSIC = AudioSystem.STREAM_MUSIC;
    /** The audio stream for alarms */
    public static final int STREAM_ALARM = AudioSystem.STREAM_ALARM;
    /** The audio stream for notifications */
    public static final int STREAM_NOTIFICATION = AudioSystem.STREAM_NOTIFICATION;
    /** @hide The audio stream for phone calls when connected to bluetooth */
    public static final int STREAM_BLUETOOTH_SCO = AudioSystem.STREAM_BLUETOOTH_SCO;
    /** @hide The audio stream for enforced system sounds in certain countries (e.g camera in Japan) */
    public static final int STREAM_SYSTEM_ENFORCED = AudioSystem.STREAM_SYSTEM_ENFORCED;
    /** The audio stream for DTMF Tones */
    public static final int STREAM_DTMF = AudioSystem.STREAM_DTMF;
    /** @hide The audio stream for text to speech (TTS) */
    public static final int STREAM_TTS = AudioSystem.STREAM_TTS;

Depending on your need you can change the stream here is STREAM_MUSIC example :

You can get constant value using refelction from AudioSytem class:

 private int getStreamType(String streamName) {
        final String streamSourceClassName = "android.media.AudioSystem";
        int streamType = 0;
        try {
            streamType = (int) Class.forName(streamSourceClassName).getDeclaredField(streamName).get(null);
        } catch (ClassNotFoundException | IllegalAccessException | NoSuchFieldException e) {
            e.printStackTrace();
        }
        return streamType;
    }


audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

seekbar.setMax(audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC));

seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
  @Override
  public void onProgressChanged(SeekBar seekBar, int newVolume, boolean b) {
    textview.setText("Media Volume : " + newVolume);
    audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, newVolume, 0);
  }

  @Override
  public void onStartTrackingTouch(SeekBar seekBar) {}

  @Override
  public void onStopTrackingTouch(SeekBar seekBar) {}
});

Answer 6

AudioManager aManager = (AudioManager) getApplicationContext().getSystemService(Context.AUDIO_SERVICE);


Button buttonUp= (Button) findViewById(R.id.upButton);
        buttonUp.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
    enter code here

//To increase media player volume               
                `enter code here`aManager.adjustVolume(AudioManager.ADJUST_RAISE, AudioManager.FLAG_PLAY_SOUND);
            }
        });

        Button downButton = (Button) findViewById(R.id.downButton);
        buttondown.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                aManager.adjustVolume(AudioManager.ADJUST_LOWER, AudioManager.FLAG_PLAY_SOUND);             
            }
        });