Android中ExpandableListView控件基本使用
本文采用一个Demo来展示Android中ExpandableListView控件的使用，如如何在组/子ListView中绑定数据源。先看下效果图再去代码：
?
?
?
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <!-- 我们会自己定义listview的显示方式（在另外一个布局文件里边）不用默认的方式 如果自定义listview的显示方式这里这个android:id="@id/android:list" 必须这样写 --> <!-- android:drawSelectOnTop="false"此属性用来设置listview上的背景颜色会不会 挡住（覆盖）内容 , 如果这是为false就表示不会覆盖掉 --> <ExpandableListView android:id="@+id/m_list" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1" android:drawSelectorOnTop="false"/> </LinearLayout>
?
?
package com.andyidea.demo;import java.util.ArrayList;import java.util.List;import android.app.ExpandableListActivity;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.widget.AbsListView;import android.widget.BaseExpandableListAdapter;import android.widget.ExpandableListView;import android.widget.TextView;import android.widget.ExpandableListView.OnGroupExpandListener;public class ContactsActivity extends ExpandableListActivity {List<String> group; //组列表List<List<String>> child; //子列表ContactsInfoAdapter adapter; //数据适配器 int groupSize; ExpandableListView mExpandableListView; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); //设置为无标题 setContentView(R.layout.main); initializeData(); getExpandableListView().setAdapter(new ContactsInfoAdapter()); getExpandableListView().setCacheColorHint(0); //设置拖动列表的时候防止出现黑色背景 mExpandableListView = (ExpandableListView)findViewById(R.id.m_list); //只展开一个group菜单 //mExpandableListView.setOnGroupExpandListener(new OnGroupExpandListener() {//public void onGroupExpand(int groupPosition) {//for (int i = 0; i < groupSize; i++) {//if (groupPosition != i) {//mExpandableListView.collapseGroup(i);//}//}//}//}); } /** * 初始化组、子列表数据 */ private void initializeData(){ group = new ArrayList<String>(); child = new ArrayList<List<String>>(); addInfo("Andy",new String[]{"male","138123***","GuangZhou"}); addInfo("Fairy",new String[]{"female","138123***","GuangZhou"}); addInfo("Jerry",new String[]{"male","138123***","ShenZhen"}); addInfo("Tom",new String[]{"female","138123***","ShangHai"}); addInfo("Bill",new String[]{"male","138231***","ZhanJiang"}); } /** * 模拟给组、子列表添加数据 * @param g-group * @param c-child */ private void addInfo(String g,String[] c){ group.add(g); List<String> childitem = new ArrayList<String>(); for(int i=0;i<c.length;i++){ childitem.add(c[i]); } child.add(childitem); } class ContactsInfoAdapter extends BaseExpandableListAdapter{ //-----------------Child----------------// @Overridepublic Object getChild(int groupPosition, int childPosition) {return child.get(groupPosition).get(childPosition);} @Overridepublic long getChildId(int groupPosition, int childPosition) {return childPosition;} @Overridepublic int getChildrenCount(int groupPosition) {return child.get(groupPosition).size();} @Overridepublic View getChildView(int groupPosition, int childPosition,boolean isLastChild, View convertView, ViewGroup parent) { String string = child.get(groupPosition).get(childPosition); return getGenericView(string);} //----------------Group----------------// @Overridepublic Object getGroup(int groupPosition) {return group.get(groupPosition);}@Overridepublic long getGroupId(int groupPosition) {return groupPosition;}@Overridepublic int getGroupCount() {groupSize = group.size();return groupSize;}@Overridepublic View getGroupView(int groupPosition, boolean isExpanded,View convertView, ViewGroup parent) {String string = group.get(groupPosition); return getGenericView(string);}//创建组/子视图 public TextView getGenericView(String s) { // Layout parameters for the ExpandableListView AbsListView.LayoutParams lp = new AbsListView.LayoutParams( ViewGroup.LayoutParams.FILL_PARENT, 40); TextView text = new TextView(ContactsActivity.this); text.setLayoutParams(lp); // Center the text vertically text.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT); // Set the text starting position text.setPadding(36, 0, 0, 0); text.setText(s); return text; } @Overridepublic boolean hasStableIds() {// TODO Auto-generated method stubreturn false;}@Overridepublic boolean isChildSelectable(int groupPosition, int childPosition) {// TODO Auto-generated method stubreturn true;} }}?
?
?
附件就是一模一样的代码。这只是自己做了一下总结，只能提供参考一下。