1<?xml version="1.0" encoding="utf-8"?> 2<shape xmlns:android="http://schemas.android.com/apk/res/android" 3 android:shape="rectangle" > 4 <solid android:color="@color/surface" /> 5 <corners 6 android:topLeftRadius="?android:attr/dialogCornerRadius" 7 android:topRightRadius="?android:attr/dialogCornerRadius" /> 8</shape>