Control device media volume using Seekbar in Sketchware App

The Seekbar can be set to control media volume of device, when any media is playing, with the use of simple codes in add source directly block in Sketchware.

In your Sketchware project, in VIEW area add a TextView (textview1) and a SeekBar (seekbar1).

Set the progress of Seekbar to 12.

In LOGIC area, in onCreate event add following code in end using add source directly block:

audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE); seekbar1.setMax(audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC));

Create a More block and put following code in it using an add source directly block.
AudioManager audioManager;
private void nothing() {

In Seekbar onProgressChanged event add following code using add source directly block:

textview1.setText("Music Volume : " + _progressValue);
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, _progressValue, 0);

That's all. Save and run the project. You should be able to change the volume of any music playing in device using the Seekbar.

It only works if any audio is playing, otherwise it doesn't change the device audio volume.

Some codes related to AudioManager.
Define AudioManager:
AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

Get Max Volume:
int max_volume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);

Get Current Volume:
int current_volume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);

Set Volume to 70%:
int volume70 = (int) max_volume * 7 / 10;
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, volume70, 0);

Mute audio:
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_MUTE, 0);

Unmute audio:
audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_UNMUTE, 0);


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    1. Hi how I create a app that mutes the device volume on syart

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

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  3. Hi! How to make a program that changes or adjust the screen brightness of a device?

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

    should be...

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

  5. how to increase number using volume button in sketchware

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  7. Excellent information, I am heartily very thankful to you for providing this kind of knowledge. This information will always help to everyone for gaining knowledge. Always keep sharing. Thanks for share free music app.


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