sheishuoAPP/uikit/res/drawable/nim_portrait_mask_round.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">

    <solid android:color="@color/black"/>

    <size android:width="10px"
          android:height="10px"/>

    <stroke
        android:width="1dp"
        android:color="@android:color/white" />

</shape>