notifyDataSetChanged()刷新ListView（使用JSONArray绑定的Adapter）

1.fragment代码：

package com.ts.fragment;









import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.Random;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import com.example.mywinxintest.R;

import com.ts.fragment.AutoListView;

import com.ts.fragment.AutoListView.OnLoadListener;

import com.ts.fragment.AutoListView.OnRefreshListener;

import com.ts.myst.JSONArrayAdapter;

import com.ts.util.HttpUtil;

import android.annotation.SuppressLint;

import android.graphics.Paint;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.support.v4.app.Fragment;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemSelectedListener;

import android.widget.ListView;

import android.widget.Spinner;

import android.widget.TextView;









public class SearchFragment extends Fragment implements OnRefreshListener,

OnLoadListener

{

Spinner areaSpinner;

TextView searchTextView;

 ListView itemListView;

 Map<String, String> countMap = new HashMap<String, String>();

 String url1 = HttpUtil.BASE_URL+"asset_findAssetArea.action";

 String url2 = HttpUtil.BASE_URL+"asset_findAssetSB.action";

 String url3 = HttpUtil.BASE_URL+"asset_findAssetSBCount.action";

 private AutoListView lstv;

 private JSONArrayAdapter jsonArrayAdapter;

 private JSONArray itemJsonArray = new JSONArray();

 private String areaId;

 private Handler handler = new Handler(){

 @SuppressLint("NewApi")

 public void handleMessage(Message msg) {

  String result = (String) msg.obj;

  JSONArray resultJsonArray = null;

  try {

  resultJsonArray = new JSONArray(result);

  } catch (JSONException e1) {

  // TODO Auto-generated catch block

  e1.printStackTrace();

  }

  switch (msg.what) {

  case AutoListView.REFRESH:

  lstv.onRefreshComplete();





  try {

  for (int i = 0; i < itemJsonArray.length(); i++) {

  itemJsonArray.remove(i);

  }

  for (int i = 0; i < resultJsonArray.length(); i++) {

  itemJsonArray.put(resultJsonArray.get(i));

  }

   

  } catch (JSONException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }

   

  break;









  case AutoListView.LOAD:

  lstv.onLoadComplete();

  for (int i = 0; i < resultJsonArray.length(); i++) {

  try {

  itemJsonArray.put(resultJsonArray.get(i));

  } catch (JSONException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }

  }

  break;

  }

  lstv.setResultSize(resultJsonArray.length());

  jsonArrayAdapter.notifyDataSetChanged();

 };

 };

 @Override

 public View onCreateView(LayoutInflater inflater , ViewGroup container , Bundle savedInstanceState)

 {

 View v = inflater.inflate(R.layout.search_fragment, null) ;

 lstv = (AutoListView) v.findViewById(R.id.lstv);

 try{

  itemJsonArray = new JSONArray("[]");

  jsonArrayAdapter = new JSONArrayAdapter(getActivity(), itemJsonArray, "assetCode_assetName_assetSyr", false, "3");

// itemListView.setAdapter(adapter2);

  lstv.setAdapter(jsonArrayAdapter);

  lstv.setOnRefreshListener(this);

  lstv.setOnLoadListener(this);

  initData(areaId);

 

  @Override

  public void onNothingSelected(AdapterView<?

> parent) {

  // TODO Auto-generated method stub

   

  }

  });

 }

 catch(Exception e){

  e.printStackTrace();

 }

 return v ;

 }

 private void initData(String areaId) {

 loadData(AutoListView.REFRESH,areaId);

 }

 private void loadData(final int what, final String areaId) {

 

 new Thread(new Runnable() {

   

  @Override

  public void run() {

  // TODO Auto-generated method stub

  try {

  Thread.sleep(700);

  } catch (InterruptedException e) {

  e.printStackTrace();

  }

  Message msg = handler.obtainMessage();

  msg.what = what;

  try {

  msg.obj = <span style="font-family: Arial, Helvetica, sans-serif;">getData(areaId) <span style="font-family: Arial, Helvetica, sans-serif;">; 

  } catch (Exception e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }

  handler.sendMessage(msg);

  }

 }).start();

 }

 @Override

 public void onLoad() {

 // TODO Auto-generated method stub

 loadData(AutoListView.LOAD,areaId);

 }

 @Override

 public void onRefresh() {

 // TODO Auto-generated method stub

 loadData(AutoListView.REFRESH,areaId);

 }

 // 測试数据

 public String getData(String areaId) {

 String result = null;

 try {

  result = HttpUtil.postRequest(url2, countMap);//通过server获取数据

 } catch (Exception e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

 }









 return result;

 }

}