android - ListView/ExpandableListView setEmptyView() 无效

Question

我正在尝试为三个 ListView 设置空 View ，即 2 个可扩展 View 和一个 ListView ，它们位于不同的选项卡中:

LayoutInflater inflater = getLayoutInflater();
        View emptyView = inflater.inflate(R.layout.empty_view, null, false);
...
ExpListView1.setEmptyView(emptyView);
ListView.setEmptyView(emptyView);
ExpListView2.setEmptyView(emptyView);

它没有任何作用 - 空 View 不会出现。与该代码段相同:

View emptyView = inflater.inflate(R.layout.empty_view, null, false);
View emptyRelativeLayout = (RelativeLayout) emptyView.findViewById(R.id.empty_view_layout);
ExpListView1.setEmptyView(emptyRelativeLayout);

empty_view_layout.xml:

<RelativeLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:id="@+id/empty_view_layout">
    <TextView
    style="@android:style/TextAppearance.Large"
    android:id="@+id/empty_view_textview"
    android:layout_width = "fill_parent"
    android:layout_height="fill_parent"
    android:text="@string/no_items_in_list" 
    android:layout_centerInParent="true"/>
</RelativeLayout>

Answer 1

通过将空 View 作为另一个内容 View 添加到我的 Activity 中解决了这个问题:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    inflater = getLayoutInflater();
    emptyView = inflater.inflate(R.layout.empty_view, null);
    addContentView(emptyView, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));