Scans the SD Card and give details of the 10 largest files, 5 most common file types and the average file size

. App allows the user to start and stop scanning. ∙ The app displays progress of ongoing scan. ∙ App contains a button allowing the user to share obtained statistics via standard Android sharing menu (button is not active until the activity receives the statistics from the server). ∙ App shows a status bar notification while it scans the external storage. ∙ UI handles screen orientation changes. ∙ When app is sent to background (by pressing HOME button), the scan continues. ∙ When app is stopped by the user (by pressing BACK button), the scan is stopped immediately.