ListView控件/ ExpandableListView setEmptyView（）没有任何影响 [英] ListView / ExpandableListView setEmptyView() has no effect

问题描述

我想设置空视图三个列表视图，即2扩展和一个列表视图，它们是在不同的标签：

  LayoutInflater吹气= getLayoutInflater（）;
        查看emptyView = inflater.inflate（R.layout.empty_view，空，假）;
...
ExpListView1.setEmptyView（emptyView）;
ListView.setEmptyView（emptyView）;
ExpListView2.setEmptyView（emptyView）;
 

它并没有影响 - 空视图不会出现。同样与code片：

 查看emptyView = inflater.inflate（R.layout.empty_view，空，假）;
查看emptyRelativeLayout =（RelativeLayout的）emptyView.findViewById（R.id.empty_view_layout）;
ExpListView1.setEmptyView（emptyRelativeLayout）;
 

empty_view_layout.xml：

 ＆LT; RelativeLayout的
  的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
  机器人：方向=垂直
  机器人：layout_width =FILL_PARENT
  机器人：layout_height =FILL_PARENT
  机器人：ID =@ + ID / empty_view_layout＆GT;
    ＆LT;的TextView
    风格=@安卓风格/ TextAppearance.Large
    机器人：ID =@ + ID / empty_view_textview
    机器人：layout_width =FILL_PARENT
    机器人：layout_height =FILL_PARENT
    机器人：文本=@字符串/ no_items_in_list
    机器人：layout_centerInParent =真/＆GT;
＆LT; / RelativeLayout的＆GT;
 

解决方案

该问题得到解决，加入空观点的另一个内容，以我的活动：

  @覆盖
公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.main）;

    充气= getLayoutInflater（）;
    emptyView = inflater.inflate（R.layout.empty_view，NULL）;
    addContentView（emptyView，新的LayoutParams（LayoutParams.FILL_PARENT，LayoutParams.FILL_PARENT））;
 

I'm trying to set empty view for three list views, namely 2 expandable and one list view, which are in different tabs:

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

It does no effect - empty view doesn't appear. Same with that code piece:

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>

解决方案

The problem was solved by adding empty view as another content view to my Activity:

@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));

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