I'm working on an app that calls a web service, then the webservice returns an array list. My problem is I am having trouble getting the data into the ArrayList and then displaying in a ListView. Any ideas what I am doing wrong? I know for a fact the web service returns an ArrayList. Everything seems to be working fine, just no data in the ListView or the ArrayList.....Thanks in advance!
EDIT: It donned on me that the data the webservice responds with is a complex type. I really think that's where I am getting hung up, but not sure how to correct it.
APRIL 21, 2010:
So I finally figured out my webservice returns a JSON Array. Now getting that over to the ArrayList and/or ListView is the challenge. I have a feeling that once this project is done, it might make for a great tutorial or example...
package com.maskau;
import java.util.ArrayList;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.AndroidHttpTransport;
import android.app.*;
import android.os.*;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.view.View;
import android.view.View.OnClickListener;
public class Home extends Activity implements Runnable{
/** Called when the activity is first created. */
public static final String SOAP_ACTION = "http://bb.mcrcog.com/GetArtist";
public static final String METHOD_NAME = "GetArtist";
public static final String NAMESPACE = "http://bb.mcrcog.com/";
public static final String URL = "http://bb.mcrcog.com/karaoke/service.asmx";
String wt;
public static ProgressDialog pd;
TextView text1;
ListView lv;
static EditText myEditText;
static Button but;
private ArrayList<String> Artist_Result = new ArrayList<String>();
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
myEditText = (EditText)findViewById(R.id.myEditText);
text1 = (TextView)findViewById(R.id.text1);
lv = (ListView)findViewById(R.id.lv);
but = (Button)findViewById(R.id.but);
but.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
wt = ("Searching for " + myEditText.getText().toString());
text1.setText("");
pd = ProgressDialog.show(Home.this, "Working...", wt , true, false);
Thread thread = new Thread(Home.this);
thread.start();
}
}
);
}
public void run()
{
try
{
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
PropertyInfo pi = new PropertyInfo();
pi.setName("ArtistQuery");
pi.setValue(Home.myEditText.getText().toString());
request.addProperty(pi);
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
AndroidHttpTransport at = new AndroidHttpTransport(URL);
at.call(SOAP_ACTION, envelope);
java.util.Vector<Object> rs = (java.util.Vector<Object>)envelope.getResponse();
if (rs != null)
{
for (Object cs : rs)
{
Artist_Result.add(cs.toString());
}
}
}
catch (Exception e)
{
// Added this line, throws "org.ksoap2.serialization.SoapObject" when run
Artist_Result.add(e.getMessage());
}
handler.sendEmptyMessage(0);
}
private Handler handler = new Handler()
{
@Override
public void handleMessage(Message msg)
{
ArrayAdapter<String> aa;
aa = new ArrayAdapter<String>(Home.this, android.R.layout.simple_list_item_1, Artist_Result);
lv.setAdapter(aa);
try
{
if (Artist_Result.isEmpty())
{
text1.setText("No Results");
}
else
{
text1.setText("Complete");
myEditText.setText("Search Artist");
}
}
catch(Exception e)
{
text1.setText(e.getMessage());
}
aa.notifyDataSetChanged();
pd.dismiss();
}
};
}
Sample result data from webservice:
<ArrayOfArtists>
<Artist>
<Track>.......</Track>
</Artist>
<Artist>
<Track>.......</Track>
</Artist>
<Artist>
<Track>.......</Track>
</Artist>
</ArrayOfArtists>
You should set the adapter in onCreate and in handleMessage just call lv.getAdapter().notifyDataSetChanged()