Android Question how to draw this moving chart ?

[hears]

hi,in my project need this kind of chart,
i have try about 1 month now,did not success,
i have find a web site ,it is perfact example as my project,
the under picture from "processes" part,in this website : http://116.236.221.214:19999

 

[klaus]

You may have a look at the xChart Class.
It contains a dynamic chart.

 

[hears]

cvsGraph.DrawLine( x - dx, yy1(i), x, yy2(i), Curve(i).Color, Curve(i).Width)

i have looked many class , not fit my design ,because i only need simple line waves ,so i try draw the lines by self,and need code make the chart move to left every 1 seconds