<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/linear_interpolator">
<scale
    android:fromXScale="1"
    android:toXScale="1"
    android:fromYScale="0.1"
    android:toYScale="1.0"
    android:duration="200"
    android:pivotX="50%"
    android:pivotY="50%"/>
</set>
Add button animations when pressing equals.
Add button animations when pressing equals.
