Android设置左边框

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape>
        <solid android:color="#54bafd" />
    </shape>
</item>
<!-- This is the line -->
<item android:left="10dp">
    <shape>
        <solid android:color="#FFFFFF" />
    </shape>
</item>