Android的可扩展列表

问题描述：

我试图用一个自定义的 ExpandableListView 与父和子布局与父母XML和子XML。

I am trying to use a custom ExpandableListView with parent and child layout with a parent XML and child XML.

我的数据会是一个服务器响应。所以我preferably想有数据数组列表或哈希地图父母和孩子的布局

My data would be a server response. So I preferably would like to have data in the form of an Array List or Hash-map for parent and child layouts

我随信附上了我想要的图像。

I am enclosing the images of what I want.

有没有办法来改变扩展列表箭头图像（默认）任何+或 - UI重新presentation如下图

Is there any way to change the expandable list arrow image(Default) by any + or - UI representation as shown below.

请提出一个教程或code逻辑，这种具体的情况。

Please suggest a tutorial or code logic for this specific situation .

答

在此期间我已经创建了一个selector.xml为：

In the meanwhile I have created an selector.xml as:

<?xml version="1.0" encoding="UTF-8"?>

<selector xmlns:android="schemas.android.com/apk/res/android" >

    <item
        android:drawable="@drawable/friend_small"
        android:state_expanded="true"/>

    <item android:drawable="@drawable/place_small"/>
</selector>

和给出的Android版本：groupIndicator =@可绘制/选择器 XML格式 - friend_small，并把小是我的扩大图像和折叠状态

and given in android:groupIndicator="@drawable/selector" in xml – friend_small and place small are my images of expand and collapsed state

Android的可扩展列表

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