Have you check the android Sample code of AudioFXDemo? If not then please check it and see whether it is helpful to you or not.
There is Equalizer which is same as Google Music app have.
Check below code in that Demo Example:
private void setupEqualizerFxAndUI() {
// Create the Equalizer object (an AudioEffect subclass) and attach it to our media player,
// with a default priority (0).
try {
System.out.println("setupEqualizerFxAndUI eEqualizer is: "+mEqualizer);
System.out.println("setupEqualizerFxAndUI mIRemoteService: "+mIRemoteService);
mEqualizer = new Equalizer(0,mIRemoteService.getAudioSessionId());
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (UnsupportedOperationException e) {
e.printStackTrace();
} catch (RemoteException e) {
e.printStackTrace();
} catch (RuntimeException e) {
e.printStackTrace();
} // Error in this line
if(onOffBtn.isChecked()){
mEqualizer.setEnabled(true);
}
short bands = 5 ;
//System.out.println("bands are: "+bands);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);
params.weight = 1;
LinearLayout newOne = new LinearLayout(this);
newOne.setLayoutParams(params);
newOne.setOrientation(LinearLayout.HORIZONTAL);
final short minEQLevel = mEqualizer.getBandLevelRange()[0];
final short maxEQLevel = mEqualizer.getBandLevelRange()[1];
//System.out.println("Minimum value::: "+minEQLevel);
//System.out.println("Maximum value::: "+maxEQLevel);
//VerticalSeekBar[] bar = new VerticalSeekBar[5];
for (short i = 0; i < bands; i++) {
final short band = i;
/* TextView freqTextView = new TextView(this);
freqTextView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
freqTextView.setGravity(Gravity.CENTER_HORIZONTAL);
freqTextView.setText((mEqualizer.getCenterFreq(band) / 1000) + " Hz");
newOne.addView(freqTextView);*/
LinearLayout row = new LinearLayout(this);
row.setOrientation(LinearLayout.VERTICAL);
TextView minDbTextView = new TextView(this);
minDbTextView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT));
minDbTextView.setText((minEQLevel / 100) + " dB");
minDbTextView.setTextColor(0xff000000);
TextView maxDbTextView = new TextView(this);
maxDbTextView.setLayoutParams(new ViewGroup.LayoutParams( ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
maxDbTextView.setText((maxEQLevel / 100) + " dB");
maxDbTextView.setTextColor(0xff000000);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 300);
layoutParams.setMargins(0, 10, 0, 10);
//--------------------------
// setClassicTone(maxEQLevel, minEQLevel);
VerticalSeekBar bar = new VerticalSeekBar(this);
bar = new VerticalSeekBar(this);
bar.setLayoutParams(layoutParams);
bar.setMax(maxEQLevel - minEQLevel);
bar.setProgress(mEqualizer.getBandLevel(band));
//bar.setMax(3000);
//bar.setProgress(mEqualizer.getBandLevel(band)+1500);
bar.setPadding(0, 10, 0, 10);
//bar.setProgressDrawable(R.drawable.scrubber_progress_horizontal_holo_light);
bar.setProgressDrawable(getResources().getDrawable(R.drawable.scrubber_progress_horizontal_holo_light));
bar.setThumb(getResources().getDrawable(R.drawable.scrubber_control_selector_holo));
//System.out.println("Progress:::"+(mEqualizer.getBandLevel(band)));
//bar[i].setProgress((maxEQLevel-minEQLevel)/2);
mEqualizer.setBandLevel(band,(short) ((maxEQLevel-minEQLevel)));
//System.out.println("Presets are: "+mEqualizer.getNumberOfPresets()+" And name is: "+mEqualizer.getPresetName(i));
//mEqualizer.setBandLevel(band, level)
bar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {
System.out.println("Seek bar change ");
presetsSpinner.setSelection(0);
mEqualizer.setBandLevel(band, (short) (progress + minEQLevel));
}
public void onStartTrackingTouch(SeekBar seekBar) {}
public void onStopTrackingTouch(SeekBar seekBar) {}
});
row.addView(maxDbTextView);
row.addView(bar);
row.addView(minDbTextView);
newOne.addView(row, params);
}
equalizerLayout.addView(newOne);
}
And the VerticalSeekBar is the class as below:
import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.SeekBar;
public class VerticalSeekBar extends SeekBar {
public VerticalSeekBar(Context context) {
super(context);
}
public VerticalSeekBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public VerticalSeekBar(Context context, AttributeSet attrs) {
super(context, attrs);
}
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(h, w, oldh, oldw);
}
@Override
protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(heightMeasureSpec, widthMeasureSpec);
setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
}
protected void onDraw(Canvas c) {
c.rotate(-90);
c.translate(-getHeight(), 0);
super.onDraw(c);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (!isEnabled()) {
return false;
}
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
case MotionEvent.ACTION_UP:
setProgress(getMax() - (int) (getMax() * event.getY() / getHeight()));
onSizeChanged(getWidth(), getHeight(), 0, 0);
break;
case MotionEvent.ACTION_CANCEL:
break;
}
return true;
}
}
Hope above code help you. If not then let me know.
Enjoy Coding... :)