问题
I know there is a UISlider but does anyone already made RangeSlider ( with two thumbs ?) or knows how to extend the uislider?
回答1:
I don't think you can directly extend UISlider, you probably need to extend UIControl.
Anyway, this is what I did and created this: http://github.com/doukasd/DoubleSlider
Have a look and let me know if you find it useful. You might also want to have a look at my blog post which includes a video showing how it works (to make sure we are talking about the same thing): http://dev.doukasd.com/2010/08/double-slider/
来源：https://stackoverflow.com/questions/2681933/iphone-range-slider