Question

我有ListView通过

设置自定义页脚

list.addFooterView(getLayoutInflater().inflate(R.layout.list_footer_view, null, true), null,true);

list_footer_view.xml如下所示：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:descendantFocusability="afterDescendants" android:focusable="false">
<LinearLayout android:onClick="onProfileClick"
    android:focusable="true" android:clickable="true">
    <TextView android:text="@string/footer_text"
        style="@style/Text" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:layout_weight="1" />
</LinearLayout>
... other views which should not be focusable

 </LinearLayout>

问题是，在非触摸模式下，只有整个页脚被选中。如您所见，我已尝试通过descendantFocusability和focusable属性操纵选择行为。没有成功。在touchmode中，点击第一个LinearLayout即可。

我还尝试将第三个addFooterView参数设置为false。

如何只选择页脚视图的子元素？

Answer 1

您还应该在ListView上调用setItemsCanFocus（true）。所以实际上有两件事需要做：

android：descendantFocusability =“afterDescendants”用于页眉和页脚ViewGroups
整个ListView的setItemsCanFocus（true）（你可能想为行ViewGroup设置android：focusable =“false”和android：focusableInTouchMode =“false”

您可能还需要为您需要关注的元素设置focusable =“true”。这是一个例子：

poi_details_buttons.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:descendantFocusability="afterDescendants"
  android:orientation="vertical" >

  <View style="@style/Poi.DetailsSeparator" />

  <Button
    android:id="@+id/show_all_comments"
    style="@style/Poi.DetailsItem"
    android:drawableRight="@drawable/icon_forward"
    android:hint="@string/poi_details_show_all_comments"
    android:text="@string/poi_details_show_all_comments" />

  <View style="@style/Poi.DetailsSeparator" />

  <Button
    android:id="@+id/report_bug"
    style="@style/Poi.DetailsItem"
    android:drawableRight="@drawable/icon_forward"
    android:hint="@string/poi_details_report_bug"
    android:text="@string/poi_details_report_bug" />

  <View style="@style/Poi.DetailsSeparator" />

</LinearLayout>

PoiFragment.java：

      protected View createView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) {
    list = (ListView) (ViewGroup) inflater.inflate(R.layout.poi_details, container, false);

    // allow buttons in header/footer to receive focus (comment_row.xml has focusable=false
    // for it's element, so this will only affect header and footer)
    // note: this is not enough, you should also set android:descendantFocusability="afterDescendants"
    list.setItemsCanFocus(true);

...

    View buttonsView = inflater.inflate(R.layout.poi_details_buttons, null);
    buttonsView.findViewById(R.id.show_all_comments).setOnClickListener(this);
    buttonsView.findViewById(R.id.report_bug).setOnClickListener(this);

    list.addFooterView(buttonsView, null, false);

    return list;
  }

使Listview的Header- / FooterView的一部分可选

1 个答案: