android app开发 列表背景色

Question

activity_txl.xml最外层布局的背景设为黑色，同时ListView最外层背景也设置为黑色
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@android:color/black"><ListView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone" 
        android:background="@android:color/black"/>