<?xml version="1.0" encoding="utf-8"?> <rotate xmlns:android="http://schemas.android.com/apk/res/android" android:fromDegrees="0" android:pivotX="50%" android:pivotY="50%" android:toDegrees="360" > <shape android:innerRadiusRatio="2.5" android:shape="ring" android:thicknessRatio="15" android:useLevel="false" > <gradient android:endColor="#fff" android:startColor="#f00" android:type="sweep" /> </shape> </rotate>