RangeBar，StepsView，SeekBar，滑竿，范畴条等相关

RangeBar，StepsView，SeekBar，滑竿，范围条等相关
http://www.open-open.com/lib/view/open1473923457964.html

http://www.jcodecraeer.com/a/opensource/2015/0918/3471.html

http://www.jcodecraeer.com/a/opensource/2015/0624/3105.html

http://www.jcodecraeer.com/a/opensource/2015/0620/3091.html

http://www.jcodecraeer.com/a/opensource/2014/1201/2086.html

http://www.jcodecraeer.com/a/opensource/2016/0125/3911.html