audio manager maudio manager =(audio manager)m Context . getsystem service(Context。 Audio _ service);

int m volume = maudio manager . getstreamvolume(audio manager。 STREAM _ MUSIC)； //Get the current music volume

mmusicvolume . set max(maudio manager . getstreammaxvolume(audio manager。 STREAM _ MUSIC))； //SEEKBAR is set to the maximum order of volume.

mmusicvolume . set progress(m volume)； //Set seekbar to the current volume progress.

MMusicvolume. Setonseekbackangelistner (new SeekBar. OnSeekBarChangeListener() {

@ Overlay

public void onStopTrackingTouch(SeekBar SeekBar){

}

@ Overlay

public void onStartTrackingTouch(SeekBar SeekBar){

}

@ Overlay

public void onProgressChanged(SeekBar SeekBar，int progress，

boolean fromUser) {

maudio manager . setstreamvolume(audio manager。 STREAM_MUSIC, progress, 0); //Change the volume when dragging seekbar

}

});