[Android Software Development] korndi:
Hy please help me!!

My full code:

package com.android.skiptvad;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.graphics.LightingColorFilter;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.android.skiptvad.*;

public class Login extends Activity {
private static final int DIALOG_LOADING = 0;
/** Called when the activity is first created. */
TextView tvuser;
String sessionid;
ProgressDialog pd = null;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);

tvuser = (TextView) findViewById(R.id.tvuser);
TextView tvpw = (TextView) findViewById(R.id.tvpw);
final EditText etuser = (EditText) findViewById(R.id.etuser);
final EditText etpw = (EditText) findViewById(R.id.etpw);
Button btlogin = (Button)findViewById(R.id.btlogin);
btlogin.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {

if (etuser.getText() != null && etpw.getText()!= null)
{
pd = ProgressDialog.show(Login.this,"","Loading. Please wait...", true);
pd.show();
Thread t = new Thread() {
public void run(){
download(etuser.getText().toString(), md5(etpw.getText().toString()));
pd.dismiss();
}
};
t.run();

}

}
});

}

public void download (final String user, final String pw)
{

try{
HttpClient client = new DefaultHttpClient();
String postURL = "http://surfkid.redio.de/login";
HttpPost post = new HttpPost(postURL);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("username", user));
params.add(new BasicNameValuePair("password", pw));
UrlEncodedFormEntity ent = new UrlEncodedFormEntity(params,HTTP.UTF_8);
post.setEntity(ent);

HttpResponse responsePOST = client.execute(post);
HttpEntity resEntity = responsePOST.getEntity();
final JSONObject jObject = new JSONObject(EntityUtils.toString(resEntity));
JSONObject menuObject = jObject.getJSONObject("responseData");

if (jObject.getInt("responseStatus")== 200 && jObject.get("responseDetails")!= null)
{
sessionid = menuObject.getString("session_id");
//dismissDialog(DIALOG_LOADING);
// pd.dismiss();
}

else
{
//dismissDialog(DIALOG_LOADING);
if (jObject.getInt("responseStatus")== 500)
{
throw new Exception("Server Error");
}
else if (jObject.getInt("responseStatus")== 400)
{
throw new Exception("Wrong User/Password");
}
else
{
throw new Exception();
}
}
//pd.dismiss();

} catch (Exception e) {
//dismissDialog(DIALOG_LOADING);
Toast toast ;
toast =	Toast.makeText(getApplicationContext(), e.getMessage(), 500);
toast.show();

}

}
private String md5(String in) {

MessageDigest digest;

try {

digest = MessageDigest.getInstance("MD5");

digest.reset();

digest.update(in.getBytes());

byte[] a = digest.digest();

int len = a.length;

StringBuilder sb = new StringBuilder(len << 1);

for (int i = 0; i < len; i++) {

sb.append(Character.forDigit((a[i] & 0xf0) >> 4, 16));

sb.append(Character.forDigit(a[i] & 0x0f, 16));

}

return sb.toString();

} catch (NoSuchAlgorithmException e) { e.printStackTrace(); }

return null;

}
@Override
protected Dialog onCreateDialog(int id) {
Dialog dialog = null;
switch (id) {
case DIALOG_LOADING:
dialog = new ProgressDialog(this);
((ProgressDialog) dialog).setMessage("Loading, please wait...");
break;
}
return dialog;
}

}

My Problem is that the ProgressDialog don't appear.

Please help!!