android 布局边框

<RelativeLayout
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"
      android:background="@drawable/content_bg"
      android:paddingBottom="10dp">
</RelativeLayout>

drawable/content_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
  <item>
    <shape>
        <stroke android:width="1px" android:color="#E0E0E0" /><!--边框颜色-->
        <solid android:color="#FFFCFCFC" /><!--填充色-->
        <corners android:radius="4dp" />
    </shape>
  </item>
</layer-list>