Animate drawableLeft APNG in button?
<p>I'm trying to add an animated PNG to a Button as a drawableLeft. </p>

<p>Basically, the button begins its life disabled and unclickable with animated PNG of a 16x16 indeterminate progress icon. </p>

<ul>
<li><p>If I can grab a cached location from the GPS, the button becomes enabled &amp; clickable and has its text set to the latitude &amp; longitude I was able to grab from the cache. </p></li>
<li><p>Once the GPS gets a lock, the animated icon gets replaced by a checkmark, the button becomes enabled &amp; clickable (if it wasn't already), and the button's Text gets set to the new latitude &amp; longitude. </p></li>
</ul>

<p>The idea is that the user can be impatient and click the button immediately to accept the cached value, or stick around and wait for a better value to appear. </p>

<p>So much for the theory. I tried it with an APNG that I know beyond doubt to be valid (the bouncing beachball from the APNG wikipedia article), as well as several other APNG images, but none of them animate when I embed them in the button.</p>

<p>Is this even possible? Do I somehow need to trigger the animation? If so, how?</p>
