android drawable create a curved top rectangle
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#FFFFFF"/>
<corners
android:topLeftRadius="24dp"
android:topRightRadius="24dp"
android:bottomLeftRadius="0dp"
android:bottomRightRadius="0dp"/>
</shape>