Write an Android application

Hello, We Need a One Android App like olx and quicker you May refer letgo and other some App Which work On GPS System and match nearest buyer & seller In Our App We Work on facebook Friends and his mutual friends. The Main Target User Of This App Will be Collage Students and there Friends circle. In this App we Use Facebook login for Reg. and login to this App After login User will Capture photo form Camera and Post for Sell with Proper Description, Category, and approximate Price. After this Post same post well display on his time Line so friends and mutual friends of Fecebook Can See. With Our app Tag or link . Any facebook user can login with same user id password to this app for searching different Items. as well as chat , bid and negotiation ,items rating ,user rating etc Fetchers like lets go . this app must be Maintain user history, like number of item he buy or sell how many time he spend in app browsing , last login and purchase etc. We No need any money transaction and payment option in this app . we just introduces buyer and seller. We Will Not Be responsible for any quality Of Product Listed in App.