Is <Button android:alpha="0.5"... API version 11+?
<p>The java <code>setAlpha()</code> method says that it is API level 11. but the XML side of it does not say anything and when I use it, it is not picked up in Lint as a warning since I have specified min SDK 8.</p>

<p>Will it crash on 2.2 if I use   android:alpha="" ?</p>
