Developpe an Android Application

The app should be created from scratch i have to add a specific ads lockscreen sdk to an app users will download this app and they will see ads on them smartphones lockscreens then i need also a button in the app to let users share this app which them friends so once users install this app they should enter them personnal informations like name and surname and birthday once registred they will see a success resgitration page then these informations should be storaged in a data base we can use firebase for that but we should access this database to see these informations we have maybe 3 or 4 screens the first one is the home page which contain our logo the logo is done the second screen is a registration screen which contain name surname and birthday cases once registred, user's data will be stored in firebase database we will not add login or logout page after registration users will see success registration page and a share button to let users share this app with them friends on fb messanger, viber and whatsapp if possible and at the down of sucess registration page we will add our facebook page link i think it's a really simple application this app will show ads on users lockscreen after pressing share button android show the list of all options on which app link can be shared any app which is installed on your device: facebook, whatsapp, viber, skype etc without any sdk