Notifydatasetchanged () refreshes the ListView (adapter with Jsonarray bindings)

1.fragment Code:
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&LT;?

> 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);
}
Test data
public string GetData (string areaid) {
String result = null;
try {
result = Httputil.postrequest (Url2, countmap);//Get Data from server
} catch (Exception e) {
TODO auto-generated Catch block
E.printstacktrace ();
}




return result;
}
}

Notifydatasetchanged () refreshes the ListView (adapter with Jsonarray bindings)