当 ListView 为空时显示空视图 [英] Showing empty view when ListView is empty

问题描述

由于某种原因，即使 ListView 不为空，空视图(在本例中为 TextView)也始终出现.我认为 ListView 会自动检测何时显示空视图.

For some reason the empty view, a TextView in this case, always appears even when the ListView is not empty. I thought the ListView would automatically detect when to show the empty view.

<RelativeLayout android:id="@+id/LinearLayoutAR"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent">
    <ListView android:id="@+id/ARListView"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"></ListView>
    <ProgressBar android:id="@+id/arProgressBar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"></ProgressBar>
    <!-- Here is the view to show if the list is emtpy -->
    <TextView android:id="@id/android:empty"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="No Results" />
</RelativeLayout>

如何正确连接空视图?

推荐答案

应该是这样的:

<TextView android:id="@android:id/empty"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:text="No Results" />

注意 id 属性.

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