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copied!<p>The code given in the accepted answer didn't intercept the onStartTrackingTouch and the onStopTrackingTouch events, so I've modified it to have more control over this two events. </p> <p>Here is my code: </p> <pre><code>public class VerticalSeekBar extends SeekBar { private OnSeekBarChangeListener myListener; 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()); } @Override public void setOnSeekBarChangeListener(OnSeekBarChangeListener mListener){ this.myListener = mListener; } 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: if(myListener!=null) myListener.onStartTrackingTouch(this); break; case MotionEvent.ACTION_MOVE: setProgress(getMax() - (int) (getMax() * event.getY() / getHeight())); onSizeChanged(getWidth(), getHeight(), 0, 0); myListener.onProgressChanged(this, getMax() - (int) (getMax() * event.getY() / getHeight()), true); break; case MotionEvent.ACTION_UP: myListener.onStopTrackingTouch(this); break; case MotionEvent.ACTION_CANCEL: break; } return true; } } </code></pre>

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