listen to system events

Hi all,

I am very new to Android, in fact I still don' t know if I can do what I want in Android.

I want to make a small app (it will run on Tablet with Android os) that will run in the background (maybe a service?) and catch system events like touch or mouse. I want it to act something like a screen saver. It will have a timer that will fire a method each time the count goes to the defined limit.

Now, I ve seen a couple of posts related to this but, at list to me, its still foggy whether I can do that without problems.
My understanding so far is best described with what resumes from a StackOverflow post with the title: "How can a service listen for touch gestures/events?"
of which I cant type the link.

In the above post I see that I can do it but that will make it "interfere with the users ability to click buttons in the activity they think they are viewing"

????

So the questions is, can I do that?

Many thanks in advance.

— modified on Mar 6, 2014, 10:32:10 AM

Thank you very much for replying.

I have strong experience in Java but none at all in Android.

The app I need to make must be able to execute another app that exists in the system (if it is not already playing) when a predefined period of time of system idle (no user touched the screen or mouse or any other input device) has passed.

You say that I can find such an app in google playstore? You remember one to point me (title or anything)?

Thank you very much! I will take it a better look.