Forked/Inspired from https://code.google.com/p/range-seek-bar/ by tittel@kom.e-technik.tu-darmstadt.de

This solves the problem as described in http://stackoverflow.com/questions/17415096/seekbar-for-two-values-50-0-50

So you can set the start position of the seekbar anywhere.

Example code:

    StartPointSeekBar<Integer> seekBar = new StartPointSeekBar<Integer>(-100, +100, this);
    seekBar.setOnSeekBarChangeListener(new StartPointSeekBar.OnSeekBarChangeListener<Integer>()
    {
        @Override
        public void onOnSeekBarValueChange(StartPointSeekBar<?> bar, Integer value)
        {
            Log.d(LOGTAG, "seekbar value:" + value);
        }
    });

    // add RangeSeekBar to pre-defined layout
    ViewGroup layout = (ViewGroup) findViewById(R.id.seekbarwrapper);
    layout.addView(seekBar);