Android check for date changed
<p>I'm trying to update my Android app based on the date.</p>

<p>So, for example, if it's a certain date show some information about that date.   </p>

<p>Or,  when it's a new week, do a couple of things in the background. </p>

<p>How do I do this?   </p>

<p>Do I check constantly for the date? Is there a "<code>flag</code>" when the date has changed? </p>

<p>Thanks. </p>