Ecommerce prototype app is developed to help android application developers if they are going to develop ecommerce application for their own or client business.
Its all free of cost and without any server database integration or API but when you will use it, it will give proper feel of database driven and it store your PIN number to login next time.
Mobile number will be your user id here so you can make multiple accounts also and each account shopping cart will be stored locally.

You can give demo of this app to your client to finalize flow of your project.

Features -
Registration based on mobile and OTP
Set PIN
Basic sign in details
Forgot PIN/Password
Login via PIN
Tabs for product categories, its dynamic, if we add new categories, new tab will add.
Insde category, product list with -
Product image
Inventory (available stock)
Title
Short description
Price per unit (units can be kg or bag)
Input box to enter quantity (as its for wholesale also so instead of drop down, input box given)
Add to cart
Delete option
View Cart on top which will take you to shopping cart where you can edit quantity or delete product.
From shopping cart you can confirm place order, before that it will ask if you have address otherwise you can add address.
If you already have addresses, you can select from those or add new.
Sliding navigation drawer for ecommerce menus like store, Orders, Cart with number of items, Logout.
Orders section -
Open
Delivered
Cancelled
Re-Order (very nice feature and give you good idea how it should work)
Exchange order (inspired by real life shopping experience)
Update profile

For demo purpose we have chosen commodity products because those are generally given order in bulk, so this app is useful for programmers who is going to develop app for retailers and/or wholesalers or both in one app.
More updates like credit line option will come.
Some features like Apply filter, Search are given for UI purpose only, functional part is under construction.

Note: No any permissions required.