gistfile1.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
     android:shareInterpolator="false">
<scale
    android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:fromXScale="1"
    android:toXScale="0"
    android:fromYScale="1"
    android:toYScale="0"
    android:pivotX="90%"
    android:pivotY="90%"
    android:fillAfter="true"
    android:duration="500" />
</set>

gistfile2.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
     android:shareInterpolator="false">
<scale
    android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:fromXScale="0"
    android:toXScale="1"
    android:fromYScale="0"
    android:toYScale="1"
    android:pivotX="90%"
    android:pivotY="90%"
    android:fillAfter="false"
    android:duration="500" />
</set>