Android Application with scrollable Gallery from JSON data

BASIC REQUIREMENTS (please see attached image for general idea) - scrollable Gallery of Applications from JSON data - MainActivity with 4 swipable view TABs - 3 TABs will contain a RecyclerView with scrollable grid style Gallery - 1 TAB will contain a Category recyclerview (list or grid); each Category will open a new recyclerview with scrollable grid style Gallery - AsyncTask to fetch the JSON data (Title, Image Url, PackageName, GooglePlay URL, etc) from the server - parsing JSON data onto android application - use Universal Image Loader Library - the RecyclerView have to change Image Layout at particular positions (when an Advertisment will be displayed in bigger size) - optimized handling of AsyncTask/JSON data: onFailure (try to access a different address or local JSON file); all asyncTask on separate thread; optimize loading time of JSON data/adapter/ads - exclude from Gallery all PackageNames already installed on user phone - on any Internet errors or AsyncTask errors, show appropriate loading images or failure message/images - Material Design in Dark style - simplest use of Styles (so I can easily modify the whole look to a Light style) and good commenting - action bar e tab bar thin as much as possible EXTRAS (depending if they can be easily implemented or not) - splash screen activity before main activity (to load Ads to show before main activity) (if convenient) - extra page for each Item with screenshot from google play and "most popualr Apps" - Button to open URL link configurable from JSON (with fallback to default URL) - G+1 e Like button (if dont need extra sdk or libs) to GooglePlay app page and Facebook generic page - special string for name on actionbar - Menu left side slide in - Help page in new activity or popup dialog - privacy policy from URL (fallback to local file)