[Q]How to change imageview to another with an interval topic

Hello,

I got a question. I'm trying to develop an app with some traffic light, it is made out of open source images. It is from a learn to develop android apps couse from udemy. I wanted to add something, I thought about a button with an automatic change function and stop function, with an interval to change the lights on and off. Do you guys have any idea how to do that?

Thanks in advance,
dev_freak