how can i use swapping to go one button to another?

i use some fixed buttons in my layout.but i am trying to go next button by touching swap down.

I understanded that you're building an app with animation to swap buttons, right ? correct me if I'm wrong.
look at these :
animation - How to swap two button position in android - Stack Overflow
java - How to swap the position of two buttons in android? - Stack Overflow