كيف بقدر اعمل تطوير على تطبيق الدخول بكلمة مرور و...

public class Login extends ActionBarActivity implements OnClickListener  {    private static final String NAMESPACE = "***";     private static final String URL = "***";    private static final String METHOD_NAME = "login";    private static final String SOAP_ACTION =  NAMESPACE + "/" + METHOD_NAME; //in wsdl it's nothing    EditText usersusername, userspassword;    Button LB;    @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);        setContentView(R.layout.activity_login);          LB = (Button) findViewById(R.id.loginbutton);         LB.setOnClickListener(this);         usersusername = (EditText)findViewById(R.id.editusername);         userspassword = (EditText)findViewById(R.id.editpassword);    }    public void onClick(View view){        if(usersusername.getText().length()==0) {            usersusername.setError("Please enter your username");        }        if(userspassword.getText().length()==0) {            userspassword.setError("Please enter your password");        }    switch (view.getId()){    case R.id.loginbutton:    new LongOperation().execute("");    break;    }    }    private class LongOperation extends AsyncTask<String, Void, String>{         @Override        protected String doInBackground(String... params) {           SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);           usersusername = (EditText)findViewById(R.id.editusername);           userspassword = (EditText)findViewById(R.id.editpassword);           String user_Name = usersusername.getText().toString();           String user_Password = userspassword.getText().toString();           PropertyInfo unameProp =new PropertyInfo();           unameProp.setName("userName");//Define the variable name in the web service method           unameProp.setValue(user_Name);//set value for userName variable           unameProp.setType(String.class);//Define the type of the variable           request.addProperty("username",user_Name);//Pass properties to the variable           //Using this to add parameters "username" grabbed from WSDL           PropertyInfo passwordProp =new PropertyInfo();           passwordProp.setName("password");           passwordProp.setValue(user_Password);           passwordProp.setType(String.class);           request.addProperty(passwordProp);           SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); // Declare the version of the soap request           envelope.setOutputSoapObject(request);           try {                HttpTransportSE aht = new HttpTransportSE(URL);                     aht.call(SOAP_ACTION, envelope);                 SoapPrimitive result =(SoapPrimitive)envelope.getResponse(); // the result will be a session ID                String sessionid = result.toString(); // convert the session ID to a string so we can check if we got something or not                //System.out.println( Something);                if (sessionid != null )                 {                   Intent intent = new Intent(Login.this,Dashboard.class);                   intent.putExtra("username",usersusername.getText().toString());                   startActivity(intent);                }                else                 {                        Intent intent = new Intent(Login.this,Login.class);                   startActivity(intent);           }           }           catch (Exception e){            e.printStackTrace();           }            return null;         } // closing bracket of do in background    } // closing bracket of long operation