Build me a mobile app for online shopping.

The user interface can be the same as "Jio Mart" App. From the admin panel, I should be able to add new Product Categories and subcategories and product items dynamically. Apart from it, the app should have features like Search products, Shop By Category, Check out cart, My Orders, User Profile, Help etc.. Overall, I need a complete app with source code.
Technical Details: Java, Android app.