How to develop a notifier type Android application
<p>I am starting to develop Android applications. I've read several tutorials and already made a small useless (but beyond hello world) application.</p>

<p>I know how I should go about creating a regular application, but that's not what I want to do.</p>

<p>I want to build a "notifier type" application. Think about a "gmail notifier" app, only not for Gmail, but for another web service. I can handle the web service and everything.</p>

<p>What I don't know is how to go about building the application, because it doesn't have a UI (Well, only an options page), and it needs to be running in the background all the time checking for updates at defined intervals (changeable from the options page).</p>

<p>Any thoughts will be greatly appreciated.</p>
