异步加载 仿expandListView效果

package com.zhd; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.Button; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.AdapterView.OnItemClickListener; public class MainDemo extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); LinearLayout grouplist = (LinearLayout) inflater.inflate( R.layout.grouplist, null); init(); for (int i = 0; i < groups.length; i++) { final Button groupBtn = new Button(this); groupBtn.setText(groups[i]); final ListView listView = new ListView(MainDemo.this); grouplist.addView(groupBtn); grouplist.addView(listView); Map<String, List<String>> imageMap = imgUrlsList.get(i); final List<NewsBean> mylist = new ArrayList<NewsBean>(); final List<String> imageList = imageMap.get(groups[i]); final MyImageAndTextListAdapter listAdapter = new MyImageAndTextListAdapter( MainDemo.this, mylist,listView); groupBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { for (int m = 0; m < imageList.size(); m++) { NewsBean nb = new NewsBean(); nb.setImage(imageList.get(m)); nb.setContent("test"); nb.setTitle(str1[m]); mylist.add(nb); } listView.setAdapter(listAdapter); groupBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { // TODO Auto-generated method stub if (listView.isShown()) { listView.setVisibility(View.GONE); } else { listView.setVisibility(View.VISIBLE); } } }); } }); listView.setPadding(5, 5, 5, 5); listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { String url = imageList.get(arg2); String content = str1[arg2]; Intent intent = new Intent(); intent.setClass(MainDemo.this, ImageTextActivity.class); intent.putExtra("url", url); intent.putExtra("content", content); MainDemo.this.startActivity(intent); } }); setContentView(grouplist); } } // 分类的数组，显示分类的种类 private String[] groups = { "group1", "group2", "group3" }; private String[] imageUrls = { "http://g4.ykimg.com/0100641F464BCDEFBBE79200E2905F1B885C92-F04A-09A7-A31C-A08EF54F79D8", "http://g3.ykimg.com/0100641F464BD095B68A770014D61BB13182B4-6191-0AF0-09C4-988B95D663DB", "http://g3.ykimg.com/0100641F464BCD9D06502E00332D63960CC1A6-8792-E3A9-51F4-B09AE5FB0BD9", "http://192.168.1.29:9992/Toolkit/photo/1080/Mobile/201111659502e01a892-e239-4b98-8dbb-8ac2dd6402fe.JPG", "http://www.qqtai.com/qqhead/UploadFiles_3178/200809/2008092004121344.jpg", "http://192.168.1.29:9992/Toolkit/photo/1080/Mobile/20111165943e115b878-0bec-4e79-bdc7-91325937d956.JPG", "http://www.qqtheme.com/touxiang/UploadPic/2009-11/2009119101320367.gif", "http://www.qqtheme.com/touxiang/UploadPic/2009-11/2009119101320367.gif", "http://g3.ykimg.com/0130391F464BD13FAEE914027E41339D78F2C3-E409-1EEB-FDE5-A5A214BC043C?u=1272004526", "http://g2.ykimg.com/0100641F464BD06E29EF440073F0ED876B3A5E-CAB1-0A4F-80D8-2B7A1D2020D3", "http://g3.ykimg.com/0100641F464BD095B68A770014D61BB13182B4-6191-0AF0-09C4-988B95D663DB", "http://g3.ykimg.com/0100641F464BCD9D06502E00332D63960CC1A6-8792-E3A9-51F4-B09AE5FB0BD9", "http://192.168.1.29:9992/Toolkit/photo/1080/Mobile/201111659467283d3b9-9511-482d-afa0-5a32b6f466fa.JPG", "http://192.168.1.29:9992/Toolkit/photo/1080/Mobile/20111165945dd79fdbb-6443-4c9f-a92b-c081243e2549.JPG" }; private String[] imageUrls2 = { "http://g3.ykimg.com/0130391F464BD13FAEE914027E41339D78F2C3-E409-1EEB-FDE5-A5A214BC043C?u=1272004526", "http://g2.ykimg.com/0100641F464BD06E29EF440073F0ED876B3A5E-CAB1-0A4F-80D8-2B7A1D2020D3", "http://g3.ykimg.com/0100641F464BD095B68A770014D61BB13182B4-6191-0AF0-09C4-988B95D663DB", "http://g3.ykimg.com/0100641F464BCD9D06502E00332D63960CC1A6-8792-E3A9-51F4-B09AE5FB0BD9" }; String[] str1 = { "This is a very cute puppy, we will like it, to take care of it", "萨马兰奇在任期间先后主持了洛杉矶、汉城、巴塞罗那、亚特兰大和悉尼奥运会。", "Tsdfsdfsdfsdf fdsfsdfs sdfsd", "This is a very cute puppy, we will like it, to take care of it", "dog dog , we are all like dog ,so you like it", "萨马兰奇在任期间先后主持了洛杉矶、汉城、巴塞罗那、亚特兰大和悉尼奥运会。", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it", "This is a very cute puppy, we will like it, to take care of it" }; private String[] imageUrls3 = { "http://g3.ykimg.com/0100641F464BD095B68A770014D61BB13182B4-6191-0AF0-09C4-988B95D663DB", "http://g4.ykimg.com/0100641F464BCDEFBBE79200E2905F1B885C92-F04A-09A7-A31C-A08EF54F79D8", "http://g3.ykimg.com/0100641F464BD095B68A770014D61BB13182B4-6191-0AF0-09C4-988B95D663DB", "http://g3.ykimg.com/0100641F464BCD9D06502E00332D63960CC1A6-8792-E3A9-51F4-B09AE5FB0BD9", "http://g3.ykimg.com/0100641F464BD095B68A770014D61BB13182B4-6191-0AF0-09C4-988B95D663DB" }; private List<String> groupsList; private List<Map<String, List<String>>> imgUrlsList; public void init() { groupsList = new ArrayList<String>(); imgUrlsList = new ArrayList<Map<String, List<String>>>(); List<String> imgList1 = new ArrayList<String>(); List<String> imgList2 = new ArrayList<String>(); List<String> imgList3 = new ArrayList<String>(); imgList1 = buildList(imageUrls); imgList2 = buildList(imageUrls2); imgList3 = buildList(imageUrls3); List<List<String>> childList = new ArrayList<List<String>>(); childList.add(imgList1); childList.add(imgList2); childList.add(imgList3); imgUrlsList = new ArrayList<Map<String, List<String>>>(); for (int i = 0; i < groups.length; i++) { String key = groups[i]; groupsList.add(key); Map<String, List<String>> currentMap = new HashMap<String, List<String>>(); currentMap.put(key, childList.get(i)); imgUrlsList.add(currentMap); } } public List<String> buildList(String[] str) { List<String> list = new ArrayList<String>(); for (int i = 0; i < str.length; i++) { list.add(str[i]); } return list; } }