build an android app to detect and list beacons, and get associated attachments from google beacon platform

This project is required within 2 days of accepting the job. I would like easily readable and maintainable code for an app which meets the following basic criteria. The UI should be neat but is not important for the prototype. On launching the app, it will detect eddystone beacons in a given namespace and populate a UI with a list of those beacons. When a beacon is found/detected, a list item for that beacon will be added to the "beacon list" in the UI. While the beacon is still in range/detected, that is: not yet lost, the list item for that beacon will display a background with colour X. When the beacon is no longer in range/no longer detected, that is: it has been lost, the list item for that beacon will display a background with colour Y, and stay in this state for 1 minute, before being disappearing from the "beacon list". The "beacon list" in the UI will be of variable size, depending how many beacons are currently in range/detected. There will be an item in the list to represent each beacon currently in range/detected. The list item for a beacon will display details of the attachments for that beacon. The attachments will be retrieved from google beacon platform. The attachments will consist of text, representing the following: 1. imageurl 2. title 3. description 4. url Each list item will display: the image found at the location given by [login to view URL] text given by [login to view URL] text given by [login to view URL] Each list item will be clickable and when clicked/tapped, will bring the user to the web address given by [login to view URL]