listSelector的组头和子布局的ExpandableListview不能正常工作的android

问题描述

我使用 ExpandableListview 动态从服务器。数据显示

我用组标题和子布局选择，但我不能发现任何反映选择。

请帮助我如何完成这件事。

先谢谢了。

row_highlighter.xml

 ＆LT;？XML版本=1.0编码=UTF-8＆GT？;
＆LT;选择的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
   机器人：exitFadeDuration =@安卓整数/ config_mediumAnimTime＆GT;   ＆LT;项目机器人：可绘制=@机器人：彩色/ holo_blue_bright机器人：STATE_ pressed =真/＆GT;
   ＆LT;项目机器人：可绘制=@机器人：彩色/ holo_blue_light机器人：state_selected =真/＆GT;
   ＆LT;项目机器人：可绘制=@机器人：彩色/ holo_blue_dark机器人：state_activated =真/＆GT;
＆LT; /选择＆GT;
 

ExpandableListviewDemo.java

  expListView.setOnGroupClickListener（新OnGroupClickListener（）{            @覆盖
            公共布尔onGroupClick（ExpandableListView父视图V，INT groupPosition，长ID）{                INT指数= parent.getFlatListPosition（ExpandableListView.getPackedPositionForGroup（groupPosition））;
                            parent.setItemChecked（指数，真正的）;
                返回false;
            }
        }）;        //点​​击儿童
        expListView.setOnChildClickListener（新OnChildClickListener（）{
            @覆盖
            公共布尔onChildClick（ExpandableListView父视图V，INT groupPosition，诠释childPosition，长ID）{
                INT指数= parent.getFlatListPosition（ExpandableListView.getPackedPositionForChild（groupPosition，childPosition））;
                parent.setItemChecked（指数，真正的）;
                返回true;
            }
        }）;
 

activity_demo.xml

 ＆LT; ExpandableListView
        机器人：ID =@ + ID / search_expandable_listview
        机器人：layout_width =match_parent
        机器人：layout_height =match_parent
        机器人：layout_gravity =开始
        机器人：choiceMode =singleChoice
        机器人：分=@彩色/ list_divider
        机器人：childDivider =@绘制/ listview_divider
        机器人：dividerHeight =1DP
        机器人：listSelector =@绘制/ row_highlighter
        机器人：背景=@彩色/ list_background
        机器人：layout_below =@ + ID / search_header
        机器人：layout_above =@ + ID / layout_option_buttons
        机器人：scrollingCache =假
        机器人：transcriptMode =已禁用
        机器人：fastScrollEnabled =假
        机器人：smoothScrollbar =真
        机器人：fastScrollAlwaysVisible =假
        机器人：animationCache =假
        机器人：persistentDrawingCache =无
        机器人：alwaysDrawnWithCache =假
        机器人：drawingCacheQuality =低/＆GT;
 

解决方案

您选择缺少默认选择把默认的颜色像下面，而不是在ExpandableList增加选择尝试将它作为的rootView背景的父母与子女的布局。

 ＆LT;选择的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
   机器人：exitFadeDuration =@安卓整数/ config_mediumAnimTime＆GT;   ＆LT;项目机器人：可绘制=@机器人：彩色/ holo_blue_bright机器人：STATE_ pressed =真/＆GT;
   ＆LT;项目机器人：可绘制=@机器人：彩色/ holo_blue_light机器人：state_selected =真/＆GT;
   ＆LT;项目机器人：可绘制=@机器人：彩色/ holo_blue_dark机器人：state_activated =真/＆GT;
   ＆LT;项目机器人：可绘制=@机器人：彩色/透明/＆GT;
  ＆LT; /选择＆GT;
 

I am using ExpandableListview that displays data dynamically from server.

I used selector for Group Header and Child Layout, but I can't notice any selector that reflects.

Pls help me how to get this done.

Thanks in advance.

row_highlighter.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"
   android:exitFadeDuration="@android:integer/config_mediumAnimTime">

   <item android:drawable="@android:color/holo_blue_bright" android:state_pressed="true"/>
   <item android:drawable="@android:color/holo_blue_light" android:state_selected="true"/>
   <item android:drawable="@android:color/holo_blue_dark" android:state_activated="true"/>
</selector>

ExpandableListviewDemo.java

expListView.setOnGroupClickListener(new OnGroupClickListener() {

            @Override
            public boolean onGroupClick(ExpandableListView parent, View v,int groupPosition, long id) {

                int index = parent.getFlatListPosition(ExpandableListView.getPackedPositionForGroup(groupPosition));
                            parent.setItemChecked(index, true);


                return false;
            }
        });



        // Clicking on Child
        expListView.setOnChildClickListener(new OnChildClickListener() {
            @Override
            public boolean onChildClick(ExpandableListView parent, View v,int groupPosition, int childPosition, long id) {


                int index = parent.getFlatListPosition(ExpandableListView.getPackedPositionForChild(groupPosition, childPosition));
                parent.setItemChecked(index, true);


                return true;
            }
        });

activity_demo.xml

<ExpandableListView
        android:id="@+id/search_expandable_listview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:choiceMode="singleChoice"
        android:divider="@color/list_divider"
        android:childDivider="@drawable/listview_divider"
        android:dividerHeight="1dp"
        android:listSelector="@drawable/row_highlighter"
        android:background="@color/list_background"
        android:layout_below="@+id/search_header"
        android:layout_above="@+id/layout_option_buttons"
        android:scrollingCache="false"
        android:transcriptMode="disabled"
        android:fastScrollEnabled="false"
        android:smoothScrollbar="true"
        android:fastScrollAlwaysVisible="false"
        android:animationCache="false"
        android:persistentDrawingCache="none"
        android:alwaysDrawnWithCache="false"
        android:drawingCacheQuality="low"/>

解决方案

Your selector is missing the default selector put the default color like below, instead of adding the selector in the ExpandableList try adding it as a background for the rootView of your Parent and Child layouts.

<selector xmlns:android="http://schemas.android.com/apk/res/android"
   android:exitFadeDuration="@android:integer/config_mediumAnimTime">

   <item android:drawable="@android:color/holo_blue_bright" android:state_pressed="true"/>
   <item android:drawable="@android:color/holo_blue_light" android:state_selected="true"/>
   <item android:drawable="@android:color/holo_blue_dark" android:state_activated="true"/>
   <item android:drawable="@android:color/transparent" />
  </selector>

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