Android Tutorials currently has three projects:

LocationTest: LocationTest uses android Location API's to get the device location and send the location information as a JSON message via HTTP POST request to a URL which can be entered into the edit text field in the app.

JsonFeedTest: This prpject uses Flickr json feed to populate listviews. The application gets the JSON feed using HTTP GET request to the feed URL and parse the feed into ArrayList.

SqlLiteAndLoginForm: This project uses android SQLite API's to CREATE a database and a Table and persist and retrieve data from the database to handle user Registration and Login.