I am trying to animate two layers of a drawable to achieve the effect of the post-Honeycomb indeterminate progress indicator. The XML is very straightforward but it would seem that only one layer will animate when run on platforms prior to Honeycomb.

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <rotate
             android:drawable="@drawable/abs__spinner_48_outer_holo"
             android:pivotX="50%"
             android:pivotY="50%"
             android:fromDegrees="0"
             android:toDegrees="1080" />
    </item>
    <item>
        <rotate
             android:drawable="@drawable/abs__spinner_48_inner_holo"
             android:pivotX="50%"
             android:pivotY="50%"
             android:fromDegrees="720"
             android:toDegrees="0" />
    </item>
</layer-list>

Is this simply a limitation of these platforms or is there an alternate syntax that I can use (either in general or specifically targetted at pre-API11) to achieve the desired functionality?

android android-animation android-xml
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