Add user and password login to my app

i need a login system in my app so when someone start my app he must write user and password to see the app. so i can add users from web and i can remove them so they cant login anymore if i remove. and if a user login from the same password another cant login with the same. so i can create new users from web

I WILL CHOSE LOWER BID

Android Desarrollo de apps móviles

Nº del proyecto: #5181540

Sobre el proyecto