qt/jdc/mobile/trunk/res/anim/loading_animation.xml

<?xml version="1.0" encoding="utf-8"?>
<set android:shareInterpolator="false" xmlns:android="http://schemas.android.com/apk/res/android">
    <rotate
            android:interpolator="@android:anim/linear_interpolator"
            android:pivotX="50%"
            android:pivotY="50%"
            android:fromDegrees="0"
            android:toDegrees="+360"
            android:duration="1500"
            android:startOffset="-1"
            android:repeatMode="restart"
            android:repeatCount="-1"/>
</set>