title: How to use a Spineer-wheel
body: <p>I've a data to update from a remote server. I want the user to know that data is being downloaded while the user is interacting with the UI. I want the "updating..." information together with a spinner-wheel (rotating circle or something) to be displayed at the bottom of the screen and disappear when the update is completed. Which control should i consider using? I already have AsyncTask. Any tutorial and example links are highly appreciated. </p>