Android的列表查看所选项目的风格没有出现，直到用户滚动 [英] Android List View selected item style not showing until user scrolls

问题描述

我目前的工作在Android平板电脑应用程序，它有两个片段，一个列表片段和细节片段。

I am currently working on an Android tablet application which has two fragments, a list fragment and a details fragment.

我试图让我的列表中有相似的地方选择的项目背景的变化和​​一个三角形放置在列表的右侧，当人们和电子邮件。

I am trying to make my list similar to People and Email where when selected the item background changes and a triangle is positioned on the right hand side of the list.

我目前遇到困难，在设置列表中选定项的背景。
正如我在列表视图明白我应该设置机器人：listSelector到绘制，所有应该工作

I am currently having difficulties setting the background of the item selected in the list. As I understand in the list view I should set android:listSelector to a drawable and all should work.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
         android:orientation="vertical"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:paddingLeft="8dp"
>

     <ListView android:id="@id/android:list"
               android:layout_width="fill_parent"
               android:layout_height="fill_parent"               
               android:layout_weight="1"  
                android:listSelector="@drawable/selected_background"   
              />


     <TextView android:id="@id/android:empty"
               android:layout_width="match_parent"
               android:layout_height="match_parent"
               android:text="No data. Please check your internet connection." android:gravity="center"/>
 </LinearLayout>


<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <solid android:color="@color/hukd_orange_faded" />
</shape>

在我这个做彩色项的背景不会改变，直到我开始滚动列表。不仅如此，但背景闪烁，往往可以追溯到标准的背景颜色。

When I do this the background of the coloured item does not change until I start to scroll the list. Not only this but the background flickers and often goes back to the standard background colour.

我在网上看了看，似乎有一个与Holo.light一个问题，因为这里Android列表选择使用得到 Theme.Light卡住时，
我已经尝试了两种状态，但存在的问题依然存在。

I have looked online and it seems there is a problem with Holo.light as shown here Android list selector gets stuck when using Theme.Light I have tried two states but the problems still exist.

推荐答案

我终于设法解决这个问题。

I have finally managed to solve this problem.

所有这一切都需要的是以下两行

All that was required was the following two lines

listView = getListView();
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);

现在它的工作原理类似于邮件和人民为ICS平板电脑。

It now works similar to mail and people in ICS for tablets.

这篇关于Android的列表查看所选项目的风格没有出现，直到用户滚动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IT屋！