Getting data from the server and loading new screen using Android

itemprop="text">

I am using following code to get data
from the Server and if the value from server is GEEK then it
will load to next class, but new view is not loading. Can you say what is the
problem?

 public void
            onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.main);


 login = (Button)
            findViewById(R.id.login);
 username = (EditText)
            findViewById(R.id.username);
 password = (EditText)
            findViewById(R.id.password);

 login.setOnClickListener(new
            OnClickListener() {

 @Override
 public void onClick(View
            v) {
String Re;
 String mUsername =
            username.getText().toString();

 String mPassword =
            password.getText().toString();

 Re=tryLogin(mUsername,
            mPassword);

 if(Re=="GEEK")
 {
 Intent i = new
            Intent();

            i.setClassName(v.getContext(),"com.httplogin.MainScreen");

            startActivity(i);


 }
 }

            });
 }

 protected String tryLogin(String mUsername,
            String mPassword)
 { 
 HttpURLConnection connection;

            OutputStreamWriter request = null;


 URL url = null;
            
 String response = null; 
 String parameters =
            "username="+mUsername+"&password="+mPassword; 

 try

            {
 url = new URL("http://serverspace/script.php");
 connection =
            (HttpURLConnection) url.openConnection();

            connection.setDoOutput(true);
 connection.setRequestProperty("Content-Type",
            "application/x-www-form-urlencoded");


            connection.setRequestMethod("POST"); 

 request = new
            OutputStreamWriter(connection.getOutputStream());

            request.write(parameters);
 request.flush();
 request.close();
            
 String line = ""; 
 InputStreamReader isr = new
            InputStreamReader(connection.getInputStream());
 BufferedReader reader = new
            BufferedReader(isr);
 StringBuilder sb = new
            StringBuilder();

 while ((line = reader.readLine()) !=
            null)
 {
 sb.append(line + "\n");
 }
 //
            Response from server after login process will be stored in response variable.
            
 response = sb.toString();

 isr.close();

            reader.close();



 }

            catch(IOException e)
 {

            Toast.makeText(this,e.toString(),0).show();
 }
 return
            response;
 }
}

Answer

Refer this code.............., Use trim
function because it eliminates the space in a
String..

public class HttpLogin
            extends Activity {
 /** Called when the activity is first created.
            */
 private Button login;
 private EditText username,
            password;

 @Override
 public void onCreate(Bundle
            savedInstanceState) {


            super.onCreate(savedInstanceState);

            setContentView(R.layout.main);

 login = (Button)
            findViewById(R.id.login);
 username = (EditText)
            findViewById(R.id.username);
 password = (EditText)
            findViewById(R.id.password);

 login.setOnClickListener(new
            OnClickListener() {

 @Override

 public void
            onClick(View v) {
 String Re;
 String mUsername =
            username.getText().toString();
 String mPassword =
            password.getText().toString();

 Re=tryLogin(mUsername,
            mPassword);
 Log.d(" Check ","Here");
 Log.d("Re",Re);

            String temp_check=Re.trim();

            if(temp_check.equals("GEEK"))

 {
 Intent i = new
            Intent();

            i.setClassName(v.getContext(),"com.httplogin.MainScreen");

            startActivity(i);

 }
 else
 {

            //Toast.makeText(HttpLogin.this,"MAX Returned",0).show();

            displayAlert(Re);

// Intent i = new Intent();
//
            i.setClassName(v.getContext(),"com.san.MainScreen");
//
            startActivity(i);
 }
 }
 });

            }

 protected String tryLogin(String mUsername, String
            mPassword)
 { 

 Log.d(" TryLoginCheck
            ","Here");
 HttpURLConnection connection;
 OutputStreamWriter
            request = null;

 URL url = null; 
 String response =
            null; 
 String temp=null;
 String parameters =
            "username="+mUsername+"&password="+mPassword; 

            System.out.println("UserName"+mUsername+"\n"+"password"+mPassword);

            Log.d("Parameters",parameters);

 try

            {

 url = new URL("http://serverspace/script.php");

            connection = (HttpURLConnection) url.openConnection();

            connection.setDoOutput(true);
 connection.setRequestProperty("Content-Type",
            "application/x-www-form-urlencoded");
 connection.setRequestMethod("POST");
            

 request = new
            OutputStreamWriter(connection.getOutputStream());


            request.write(parameters);
 request.flush();
 request.close();
            
 String line = ""; 
 InputStreamReader isr = new
            InputStreamReader(connection.getInputStream());
 BufferedReader reader = new
            BufferedReader(isr);
 StringBuilder sb = new StringBuilder();
 while
            ((line = reader.readLine()) != null)
 {



            sb.append(line + "\n");
 }
 temp=sb.toString();

            Log.d("Temp",temp);
 // Response from server after login process will be
            stored in response variable. 
 response = sb.toString();

            Log.d("Response",response);
 Log.d("Sb Value",sb.toString());

            isr.close();
 reader.close();




            }
 catch(IOException e)
 {

            Toast.makeText(this,e.toString(),0).show();
 }
 //
            Log.d("Response",response);
 return response;

            }

 public void displayAlert(String Re)
 {
 new
            AlertDialog.Builder(this).setMessage(Re)
 .setTitle("Returned Value")
            
 .setCancelable(true) 
 .setNeutralButton(android.R.string.ok, new
            DialogInterface.OnClickListener() { 
 public void onClick(DialogInterface
            dialog, int whichButton){
 finish();
 } 
 })
            

 .show(); 

            }
}