<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="200">

    <scale
        android:fromXScale="1"
        android:fromYScale="1"
        android:pivotX="0"
        android:pivotY="100%"
        android:toXScale="1"
        android:toYScale="0" />
</set>