试试这个
在您的布局中
    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" 
    android:background="#FFF">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="5dip"
        android:background="@drawable/background"
        android:orientation="vertical" />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@xml/shape_round_rect"
        android:orientation="vertical" />
</FrameLayout>
& 在你的 xml 中用于形状
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >
    <corners android:radius="15dip" />
    <stroke
        android:width="5dip"
        android:color="#FFF" />
</shape>