How do I follow View as I scroll through Android apps?

I'm having trouble developing Android apps.
Please tell me how to implement the View that comes with floating and scrolling.

"The image is a view that will look like the ""asideFixedBox"" sample below."
http://detelu.com/blog/sample/jQuery/floatbox/index2.html

It's not always in a fixed position, but it will follow you if you scroll more than a certain amount.
I'm looking for an easy way to do it regardless of standard or library.