问题描述
在我的应用程序，我想要做类似的Gmail应用程序，一些平板电脑，在左侧有项目，并在右侧的列表中有与该项目的内容片断，像Gmail应用程序这个内容被选择后下载。当我点击一个项目，我希望它仍然突出，当然，直到我改变选择。我的地步了这个工作，但只有当我点击两次在同一个项目，所以首先我点击，选择作品，然后该项目可以追溯到它的默认状态，如果我再次点击它，选择（选定状态）是可见的。
In my application I want to do something similar to gmail app on tablets, in the left to have the list of items and in the right to have a fragment with the content of that item, like for gmail app this content is being downloaded after selection. After I click on an item I want it to remain highlighted until, of course I change the selection.I reached a point where this works but only if I click twice on the same item, so first I click, selection works and then the item goes back to its 'default' state and if I click again on it, the selector (for selected state) is visible.
这是我到目前为止有：
1）选择（listitem_background.xml）
1) The selector (listitem_background.xml)
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/solid_white" android:state_pressed="false" android:state_selected="false"/>
<item android:drawable="@drawable/listitem_pressed" android:state_pressed="true"/>
<item android:drawable="@drawable/listitem_focused" android:state_selected="true"/>
</selector>
2）对于列表项的顶部线性布局：
2) For the top linear layout of the list item:
android:background="@drawable/listitem_background"
（我试过设置此为listselector，以及）
(I tried setting this as listselector, as well)
3）这是ListView控件：
3) This is the ListView:
<ListView
android:id="@+id/my_list_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:choiceMode="singleChoice"
android:dividerHeight="1dp"
android:drawSelectorOnTop="true"
android:fadeScrollbars="true"
android:fastScrollEnabled="true"
android:focusable="true"
android:focusableInTouchMode="true"
android:scrollbarFadeDuration="100"
android:scrollbars="vertical" />
4）在code部分我试着用这个玩：
4) In the code part I tried to play with this:
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
view.setSelected(true);
...
}
事实上，我也注意到，选择是遗失的片段后，在屏幕右侧的提交。如果我没有犯片段它的工作原理就像一个魅力...我想我需要像这样的选择：
In fact I've noticed that the selection is lost after the commit of the fragment in the right side of the screen. If I don't commit the fragment it works like a charm...I think I need something like this in the selector:
<item android:drawable="@drawable/listitem_focused" android:state_activated="true" android:state_focused="false"/>
但显然不是这样...
But obviously not this...
推荐答案
OK，终于得到了答案。
OK, finally got my answer.
我们的想法是使用state_activated在选择器以及
The idea is to use the state_activated in the selector and
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE)
在code，或
android:choiceMode="singleChoice"
在XML，当然
这是选择应该是什么样子：
This is how the selector should look like:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/solid_white" android:state_activated="false"/>
<item android:drawable="@drawable/solid_white" android:state_activated="false" android:state_pressed="false"/>
<item android:drawable="@drawable/listitem_pressed" android:state_pressed="true"/>
<item android:drawable="@drawable/listitem_focused" android:state_activated="true"/>
</selector>
这是列表项的布局应该怎样为：
This is how the list item layout should be:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/listitem_background"
android:orientation="vertical" >
...
<LinearLayout/>
这篇关于安卓：设置列表视图项为＆QUOT;选择＆QUOT; （高亮）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！