public void setOnSeekBarChangeListener(OnSeekBarChangeListener l) {
        mOnSeekBarChangeListener = l;
    }
Sets a listener to receive notifications of changes to the SeekBar's progress level. Also
provides notifications of when the user starts and stops a touch gesture within the SeekBar.
And provides notifications of when the AbsSeekBar shows/hides the bubble indicator.

@param l The seek bar notification listener
@see OnSeekBarChangeListener
caprice/ui/src/main/java/net/qiujuer/genius/ui/widget/SeekBar.java