background_gradient.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <gradient
        android:angle="90"
        android:centerColor="#EEFFFFFF"
        android:endColor="#FFFFFFFF"
        android:startColor="#00FFFFFF" />
</shape>