sheishuoAPP/uikit/res/drawable/nim_semitransparency_selector.xml

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

    <item
        android:drawable="@color/im_list_select_hover"
        android:state_pressed="true"/>
    <!-- pressed -->
    <item android:drawable="@color/white"/>
    <!-- default -->
</selector>