android - Create lots of apps with most of the same code -

i have searched internet answer can't find looking for. im looking have master code base can use across lots of apps. differences app icon, background image, app name , url server information. have master copy of app both on ios , android, , im copying (so creating new project same code), changing little bits need changing. in doing if updated master app new feature have add new bit of code every project update them. there way can update master code , update of projects apart url, name , images.

edit - have looked @ question (android-flavors-with-different-base-themes im not taking making 10 or apps 1 code base. have 170+ apps , growing. accpetable have many android flavours or xcode targets in 1 project , easy add new ones.

as elrain has said below creating library can import each project proberly going best solution situation can manage library , update in projects. im wondering if has encountered problem before.

thanks

(for ios) given limited changes 1 app another, suggest creating additional build targets within same xcode project. can duplicate existing target, make changes determine resource , classes belong given target.