2010.12.29——— android 可伸缩的listview ExpandableList
直接上代码吧 比较简单 大家看一下就明白了
package com.huitu.project;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import com.huitu.pojo.ZFSCLX;import com.huitu.service.ZFSCLXService;import com.huitu.util.JSONUtil;import android.app.AlertDialog;import android.app.ExpandableListActivity;import android.app.ProgressDialog;import android.content.DialogInterface;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.KeyEvent;import android.view.View;import android.widget.ExpandableListAdapter;import android.widget.ExpandableListView;import android.widget.SimpleExpandableListAdapter;public class ZFSCMainActivity extends ExpandableListActivity { private ExpandableListAdapter mAdapter; private ProgressDialog pd; private Handler handler; private List<Map<String, Object>> groupData = new ArrayList<Map<String, Object>>(); private List<List<Map<String, Object>>> childData = new ArrayList<List<Map<String, Object>>>(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); pd = new ProgressDialog(this); pd.setIndeterminate(true); pd.setMessage("加载数据..."); pd.setCancelable(true); pd.show(); handler = new Handler(){ @Override public void handleMessage(Message msg) { int length = msg.getData().getInt("length"); switch (length){ case 1 : pd.dismiss(); setListAdapter(mAdapter); break; case 2 : pd.dismiss(); new AlertDialog.Builder(ZFSCMainActivity.this) .setMessage("网络异常！") .setCancelable(false) .setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { //finish(); } }).create().show(); break; } } }; new Thread(){ Message msg = new Message(); public void run(){ try{ String json = ZFSCLXService.queryZFSCLX(null); System.out.println(json); List<ZFSCLX> list_zfsclx= JSONUtil.parseJSON_ZFSCLX_list(json); for (ZFSCLX bean : list_zfsclx) { Map<String, Object> curGroupMap = new HashMap<String, Object>(); groupData.add(curGroupMap); curGroupMap.put("name", bean.getName()); curGroupMap.put("id",bean.getId()); curGroupMap.put("pid",bean.getP_Id()); String json2 = ZFSCLXService.queryZFSCLX(bean.getId()); System.out.println(json2); List<ZFSCLX> zfsclxitems= JSONUtil.parseJSON_ZFSCLX_list(json2); List<Map<String, Object>> children = new ArrayList<Map<String, Object>>(); for (ZFSCLX bean2 : zfsclxitems) { Map<String, Object> curChildMap = new HashMap<String, Object>(); children.add(curChildMap); curChildMap.put("name", bean2.getName()); curChildMap.put("id",bean2.getId()); curChildMap.put("pid",bean2.getP_Id()); } childData.add(children); } // Set up our adapter mAdapter = new SimpleExpandableListAdapter( ZFSCMainActivity.this, groupData, android.R.layout.simple_expandable_list_item_1, new String[] { "name" }, new int[] { android.R.id.text1 }, childData, android.R.layout.simple_expandable_list_item_1, new String[] { "name" }, new int[] { android.R.id.text1 } ); msg.getData().putInt("length", 1); handler.sendMessage(msg); }catch(Exception e){ e.printStackTrace(); msg.getData().putInt("length", 2); handler.sendMessage(msg); } } }.start(); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { // 按下键盘上返回按钮 if (keyCode == KeyEvent.KEYCODE_BACK) { new AlertDialog.Builder(this) .setMessage("确定退出系统吗？") .setNegativeButton("取消", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { } }) .setPositiveButton("确定", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichButton) { finish(); } }).show(); return true; } else { return super.onKeyDown(keyCode, event); } } @Override protected void onDestroy() { super.onDestroy(); // 或者下面这种方式 //System.exit(0); //建议用这种 android.os.Process.killProcess(android.os.Process.myPid()); } @Override public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { String ID = (String)groupData.get(groupPosition).get("id"); Intent intent = new Intent(ZFSCMainActivity.this,ZFSCActivity.class); Bundle bundle = new Bundle(); bundle.putString("ID", ID); bundle.putInt("g_index", groupPosition); bundle.putInt("c_index", childPosition); bundle.putString("CID", childData.get(groupPosition).get(childPosition).get("id").toString()); intent.putExtras(bundle); startActivity(intent); return super.onChildClick(parent, v, groupPosition, childPosition, id); } }