title: SeekBar Thumb position issue
body: <p>I'm trying to do a "labeled" thumb for my Seekbar. 
  The objective is to customize a text above the thumb every time the Seekbar position changes.</p>
  
  <p>I'm doing this:</p>
  
  <pre><code>        ...
          seekBar = (SeekBar) findViewById(R.id.bet_seek_bar);
          seekBar.setMax(10);
          setSeekBarLabel("0");
          seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
  
              @Override
              public void onStopTrackingTouch(SeekBar seekBar)
              {
  
              }
  
              @Override
              public void onStartTrackingTouch(SeekBar seekBar)
              {
  
              }
  
              @Override
              public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
              {
                  setSeekBarLabel(String.valueOf(progress));
              }
          });
      }
  
      private void setSeekBarLabel(String text)
      {
          BitmapDrawable thumb = Utils.writeOnBitmap(thumbBmp, text, 0, 0, thumbLablePaint);
          seekBar.setThumb(thumb);
      }
  </code></pre>
  
  <p>After running it, and touch the bar, I'm getting this:</p>
  
  <p><img src="https://i.stack.imgur.com/QnMtx.png" alt="screenshot"></p>
  
  <p>I DON'T CARE right now about any text issue (not writing one, porition, etc).</p>
  
  <p>I DO CARE about thumb position relative to the bar progress.</p>
  
  <p>The thumb position should be where the green bar ends. What am I missing?</p>
  
  <p>Regards.</p>