本文采用一個Demo來展示Android中ExpandableListView控件的使用,如如何在組/子ListView中綁定數據源。直接上代碼如下:
程序結構圖:
layout目錄下的 main.xml 文件源碼如下:
- <?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">
- <!-- 我們會自己定義listview的顯示方式(在另外一個佈局文件裏邊)不用默認的方式
- 如果自定義listview的顯示方式這裏這個android:id="@id/android:list" 必須這樣寫 -->
- <!-- android:drawSelectOnTop="false"此屬性用來設置listview上的背景顏色會不會
- 擋住(覆蓋)內容 , 如果這是爲false就表示不會覆蓋掉 -->
- <ExpandableListView
- android:id="@id/android:list"
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:layout_weight="1"
- android:drawSelectorOnTop="false"/>
- </LinearLayout>
包 com.andyidea.demo中ContactsActivity.java源碼如下:
- 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.TextView;
- public class ContactsActivity extends ExpandableListActivity {
- List<String> group; //組列表
- List<List<String>> child; //子列表
- ContactsInfoAdapter adapter; //數據適配器
- /** Called when the activity is first created. */
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- requestWindowFeature(Window.FEATURE_NO_TITLE); //設置爲無標題
- setContentView(R.layout.main);
- getExpandableListView().setBackgroundResource(R.drawable.default_bg);
- initializeData();
- getExpandableListView().setAdapter(new ContactsInfoAdapter());
- getExpandableListView().setCacheColorHint(0); //設置拖動列表的時候防止出現黑色背景
- }
- /**
- * 初始化組、子列表數據
- */
- 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"});
- }
- /**
- * 模擬給組、子列表添加數據
- * @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----------------//
- @Override
- public Object getChild(int groupPosition, int childPosition) {
- return child.get(groupPosition).get(childPosition);
- }
- @Override
- public long getChildId(int groupPosition, int childPosition) {
- return childPosition;
- }
- @Override
- public int getChildrenCount(int groupPosition) {
- return child.get(groupPosition).size();
- }
- @Override
- public View getChildView(int groupPosition, int childPosition,
- boolean isLastChild, View convertView, ViewGroup parent) {
- String string = child.get(groupPosition).get(childPosition);
- return getGenericView(string);
- }
- //----------------Group----------------//
- @Override
- public Object getGroup(int groupPosition) {
- return group.get(groupPosition);
- }
- @Override
- public long getGroupId(int groupPosition) {
- return groupPosition;
- }
- @Override
- public int getGroupCount() {
- return group.size();
- }
- @Override
- public View getGroupView(int groupPosition, boolean isExpanded,
- View convertView, ViewGroup parent) {
- String string = group.get(groupPosition);
- return getGenericView(string);
- }
- //創建組/子視圖
- 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;
- }
- @Override
- public boolean hasStableIds() {
- // TODO Auto-generated method stub
- return false;
- }
- @Override
- public boolean isChildSelectable(int groupPosition, int childPosition) {
- // TODO Auto-generated method stub
- return true;
- }
- }
- }
最後,程序運行後截圖如下:
轉載自:http://blog.csdn.net/cjjky/article/details/6903504?userName=u013899706&userInfo=Xx6boAr4EwB3YAVI0zyMpFPEe21gGC7ZZME9pCMt6R6rRHQ4evxiQ4qabj3d6669jPTvnc%2FSh7eHAfa9yNArW78BgGPmYTtbCURSiuZ4hgqVAUNg9B5%2FVIBekHnU%2BPLEC3nQ2PPG2I18TrVNaAtwoQ%3D%3D