listen to android touch events of home screen

Hello everyone,

I am developing an app in which I want to know when user swipe down or up on the home screen of the android mobile. Basically I want to perform some action whenever user swipe up/down on the home screen.

I search a lot on the web but found no answer whether it is possible or not. If it is possible then from where I can learn how to do this.

Thanks in advance for your kind reply.