如何给布局套上带颜色的边框

写一个selector

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape>
            <stroke android:width="2px" android:color="@color/commo_text_color" /><!--边框颜色-->
            <solid android:color="#FFFCFCFC" /><!--填充色-->
            <corners android:radius="4dp" />
        </shape>
    </item>
</layer-list>