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

    <alpha
        android:duration="300"
        android:fromAlpha="0.1"
        android:interpolator="@android:anim/accelerate_decelerate_interpolator"
        android:repeatCount="1"
        android:repeatMode="reverse"
        android:toAlpha="1.0" >
    </alpha>
</set>