<set xmlns:android="http://schemas.android.com/apk/res/android">

    <scale
        android:duration="600"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:pivotX="50%"
        android:pivotY="50%"
        android:toXScale="0.8"
        android:toYScale="0.8"
        />

    <alpha
        android:duration="800"
        android:fromAlpha="1.0"
        android:toAlpha="0.0"/>

</set>