newbie wireless keyboard app **NOT SPAM**

hey im new to programming and would like to build an android app to function as a wireless keyboard. i know these exist but i would like to try something new with it but first need a basic keyboard app. im not sure what languages i need to use for the different portions of code. ive never build any computer programs before and am learning, if anyone has input, advice, or an example of code for a similar project it would really be appreciated. this is not spam, i cant find a related thread, if you think there is a thread that answeres these things please post it and stop marking this as spam.