1<?xml version="1.0" encoding="utf-8"?> 2<set 3 xmlns:android="http://schemas.android.com/apk/res/android" > 4 <set 5 android:ordering="sequentially" > 6 <objectAnimator 7 android:duration="266" 8 android:propertyName="fillAlpha" 9 android:valueFrom="1.0" 10 android:valueTo="1.0" 11 android:valueType="floatType" 12 android:interpolator="@android:interpolator/linear" /> 13 <objectAnimator 14 android:duration="16" 15 android:propertyName="fillAlpha" 16 android:valueFrom="1.0" 17 android:valueTo="0.5" 18 android:valueType="floatType" 19 android:interpolator="@android:interpolator/linear" /> 20 <objectAnimator 21 android:duration="433" 22 android:propertyName="fillAlpha" 23 android:valueFrom="0.5" 24 android:valueTo="0.5" 25 android:valueType="floatType" 26 android:interpolator="@android:interpolator/linear" /> 27 <objectAnimator 28 android:duration="16" 29 android:propertyName="fillAlpha" 30 android:valueFrom="0.5" 31 android:valueTo="1.0" 32 android:valueType="floatType" 33 android:interpolator="@android:interpolator/linear" /> 34 </set> 35</set> 36