sheishuoAPP/uikit/res/layout/nim_message_item_notification.xml

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

    <TextView
        android:id="@+id/message_item_notification_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="7dip"
        android:layout_marginRight="7dip"
        android:background="@drawable/nim_bg_message_tip"
        android:gravity="center"
        android:paddingLeft="7dip"
        android:paddingRight="7dip"
        android:textColor="#ffffff"
        android:textSize="12sp"/>

</merge>