<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">

  <item android:id="@android:id/background">
    <rotate
      android:fromDegrees="0"
      android:pivotX="50%"
      android:pivotY="50%"
      android:toDegrees="360">

      <shape
        android:shape="ring"
        android:thickness="3dp"
        android:type="sweep"
        android:useLevel="false">

        <gradient
          android:angle="0"
          android:centerColor="#00ffffff"
          android:endColor="#00ffffff"
          android:startColor="#ffffffff"
          android:type="sweep"
          android:useLevel="false" />

      </shape>

    </rotate>
  </item>

</layer-list>