如何让所有控件都变成圆角

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"     android:shape="rectangle">        <solid android:color="@color/pink"/>        <corners android:bottomLeftRadius="8dp"        android:bottomRightRadius="8dp"        android:topLeftRadius="8dp"        android:topRightRadius="8dp"/></shape>