Write and design an Android app

- The app must be able to take thousands of transactions a day without any problems - Website non-mobile platform that lets the restaurateurs upload their menu information, their operating hours, the food item images, descriptions - rating option for the restaurant and dishes - payment gateway include (credit cards, paypal, or even smart cards) - ad-hoc versions of the app throughout it's development - the graphic design has to be done by your team too. We are looking for high quality designs - After order there. consumer thanked for their order and perhaps an ad - search available by region, restaurant name, cuisine type, price range= in a slot like format - Should have collapsable menu's - simple interface to add and remove ordered items - option: dine-in, take-out, delivery - Delivery to alternate address doable - restaurant to list their minimum delivery charge a - option to change language from Chinese to English and vice versa (the translation will be done by me) - registration shall be done on the app - Google map option - Developers should follow Android security best practices - Hackers shouldn't be able to steal user credit card information. - The app's layout shouldn't be altered as the screen size varies. As in the app should be responsive. - no vulnerabilities within the cache, key stores, application file system, application database, configuration files - The app only available in specified country - Comply with the Android hardening checklist - Interconnectivity and "no connection" status should also be factored into the app's design - Special instructions for order (e.g., extra spicy, etc, just a field wherein people can input the information) - Navigation buttons: home, favorites, search, share, shopping cart, More - Loading icon - Able to increase quantity of orders and order from multiple restaurants - App can host thousands of restaurants without compromising the performance of the app - The user should be able to choose which payment option they want as they may want to pay using either credit card, octopus or paypal, etc on different occasions. - Create account option(needs name, address, credit card information (optional), / paypal, email, password, - If no credit card they can choose not to use it - web app that allows people to pre-order before coming to collect the item - Needs to be able to connect to the POS (as in if the person orders through my app then the POS shall automatically have the order number, the ordered items, etc) - Social media buttons - An analytics page for the restaurateur - The app should be able to track the user using GPS - Need app icon designed by your firm as well - The app shouldn't leak sensitive information via property files, SD card storage, via hardcoded secrets, SQLite db, insecure logging in mechanism, Toast messages, side channel leakage -If for some reason the food order isn't sent through, the user should be notified - Advertising portion where (on the non-mobile platform) where the restaurateur can upload their banner - The app shouldn't be affected if there's an incoming call - Sms, whatsapp, notifications messages , calendar reminder, charger is disconnected/connected, device goes to sleeping mode, airplane mode, device is locked, low battery shouldn't affect the app - If the screen is tilted/shaken it shouldn't affect the app's function. The app should remain vertically displayed - People should be able to queue up before going to the venue if the restaurant has a queuing system. The number should automatically add into the system's number - If the app switches between wi-fi, 2G, 3G, or 4G it shouldn't affect the app - users should be warned of the consequences of going to previous screen when order is in progress -inactive buttons should be clearly distinguished from the active buttons - Keyboard adjusts to expected input (for instance numbers/letters when expected) - Has to pass Android App guidelines