arduino work as android controller ?

Using Arduino Project Guidance
#1

Hi, guys.

I want to add some physical buttons to an android system via arduino and I wonder if it is possible.

I just want some common functions like volume up and down, silent, back, home, menu, etc.

Any tutorial or reference is sincerely appreciated.

Thanks.

#2

You first need to find and download the Android app that accepts the Arduino input

#3

Why physical buttons, when you can command arduino via Wifi, wireless. The button can be on an android app.

#4