[es] - J2ME moj mali midlet nece da radi

Valerij Zajcev

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^{26.01.2009. u 09:26 - pre 185 meseci}

Kada treba da se povezem na neku drugu metodu recimo neka koja vraca samo string ono radi ok. Ali ova metoda mora da posalje dva parametra na WS i da na osnovu njih vrati 'string'. Problem nastaje kada u text polja ukucam username i password program me pita "...bla...bla...want's to connect to http://www......asmx using airtime. This may result in charges. Is it OK to use airtime?", ja tu kazem 'Yes' i tu se aplikacija zaustavi, nista se ne desava dalje.
Sta sam uradio?

Code:

import java.rmi.RemoteException;
import javax.xml.rpc.Stub;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

import com.game.web.ServiceSoap_Stub;

public class HelloWorld3 extends MIDlet implements CommandListener {
    private String webServiceURL = "http://localhost/javaGame/Service.asmx";
    private Command exitCommand;

    private String userDataString = "";
    private Display display;
    private TextField userName,password;
    public Form form;
    private Command login,cancel;

    public HelloWorld3() {
        exitCommand = new Command("Exit", Command.EXIT, 0);
        form = new Form("Sign in");
        userName = new TextField("LoginID:", "", 30, TextField.ANY);
        password = new TextField("Password:", "", 30, TextField.PASSWORD);
        cancel = new Command("Cancel", Command.CANCEL, 2);
        login = new Command("Login", Command.OK, 2);
    }

    public void startApp() {
        display = Display.getDisplay(this);
        form.append(userName);
        form.append(password);
        form.addCommand(cancel);
        form.addCommand(login);
        form.setCommandListener(this);
        display.setCurrent(form);

    }


    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
        notifyDestroyed();
    }

    public void commandAction(Command c, Displayable s) {
        String label = c.getLabel();
        if(label.equals("Cancel")) {
          destroyApp(true);
        } else if(label.equals("Login")) {
          validateUser(userName.getString(), password.getString());
        }
    }
    public void validateUser(String name, String password) {
        try{
            ServiceSoap_Stub service = new ServiceSoap_Stub();
            service._setProperty(Stub.ENDPOINT_ADDRESS_PROPERTY, webServiceURL);
            service._setProperty(Stub.SESSION_MAINTAIN_PROPERTY, Boolean.FALSE);
            userDataString = service.loginUser(name, password);
            if (userDataString != ""){
                showMsg();
            }
            else{
                tryAgain();
            }

        }
        catch(RemoteException e){

        }
      }

      public void showMsg() {
        Alert success = new Alert("Your Login Process is completed!");
        userName.setString("");
        password.setString("");
        display.setCurrent(success, form);
      }

      public void tryAgain() {
        Alert error = new Alert("Please try again");
        error.setTimeout(900);
        userName.setString("");
        password.setString("");
        display.setCurrent(error, form);
      }
}

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zigizig

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Re: J2ME moj mali midlet nece da radi

^{26.01.2009. u 13:07 - pre 185 meseci}

Nisam gledao source code jer mi izgleda da problem nije do aplikacije vec do uredjaja sa kojeg zelis da se konektujes na internet.
Da li aplikaciju testiras iz emulatora ili na telefonu?

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Valerij Zajcev

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Re: J2ME moj mali midlet nece da radi

^{27.01.2009. u 07:38 - pre 185 meseci}

emulator. U eclipse onaj obican.

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Valerij Zajcev

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Re: J2ME moj mali midlet nece da radi

^{27.01.2009. u 10:08 - pre 185 meseci}

Provalio sam da je problem sto sam pokusao da se konektujem na server preko istog thread-a gde mi je i glavna petlja, sada sam napravio novu klasu i thread ali nemam pojma dal sam se ulogovao :) dobro. Kada me sada pita za 'airtime' ja kazem 'yes' i on me vrati u glavnu formu, ne znam sta sam zajebao :(???

Code:

import java.rmi.RemoteException;
import javax.xml.rpc.Stub;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.microedition.midlet.MIDletStateChangeException;
import com.game.web.ServiceSoap_Stub;

public class HelloWorld3 extends MIDlet implements CommandListener {
    //private String webServiceURL = "http://localhost/javaGame/Service.asmx";
    private Command exitCommand;

    private String userDataString = "";
    private Display display;
    private TextField userName,password;
    public Form form;
    private Command login,cancel;

    public HelloWorld3() {
        exitCommand = new Command("Exit", Command.EXIT, 0);
        form = new Form("Sign in");
        userName = new TextField("LoginID:", "", 30, TextField.ANY);
        password = new TextField("Password:", "", 30, TextField.PASSWORD);
        cancel = new Command("Cancel", Command.CANCEL, 2);
        login = new Command("Login", Command.OK, 2);
    }

    public void startApp() {
        display = Display.getDisplay(this);
        form.append(userName);
        form.append(password);
        form.addCommand(cancel);
        form.addCommand(login);
        form.setCommandListener(this);
        display.setCurrent(form);

    }


    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
        notifyDestroyed();
    }

    public void commandAction(Command c, Displayable s) {
        String label = c.getLabel();
        if(label.equals("Cancel")) {
          destroyApp(true);
        } else if(label.equals("Login")) {
            ConnectionLogic cn = new ConnectionLogic(userName.getString(), password.getString());
            Thread th = new Thread(cn);
            th.start();
            if (cn.GetJmbg() == "")
            {
                tryAgain();
            }
            else
            {
                showMsg();
            }


        }
    }

      public void showMsg() {
        Alert success = new Alert("Your Login Process is completed!");
        userName.setString("");
        password.setString("");
        display.setCurrent(success, form);
      }

      public void tryAgain() {
        Alert error = new Alert("Please try again");
        error.setTimeout(900);
        userName.setString("");
        password.setString("");
        display.setCurrent(error, form);
      }
}
class ConnectionLogic implements Runnable
{
    private String username;
    private String password;

    private String jmbg;

    public String GetJmbg()
    {
            return jmbg;

    }

    private String webServiceURL = "http://localhost/javaGame/Service.asmx";
    public ConnectionLogic()
    {
    }
    public ConnectionLogic(String uname, String pass)
    {
        this.username = uname;
        this.password = pass;
    }
    public void run()
    {
        try{
            ServiceSoap_Stub service = new ServiceSoap_Stub();
            service._setProperty(Stub.ENDPOINT_ADDRESS_PROPERTY, webServiceURL);
            service._setProperty(Stub.SESSION_MAINTAIN_PROPERTY, Boolean.FALSE);
            jmbg = service.loginUser(username, password);

            }
            catch (RemoteException e){

            }

    }

}

P.S.
Ovo mi je prvi put da radim sa nitima u javi :(

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DeYo
Dejan Vukmirovic
developer @ Mogul
Pozarevac/Bgd/Stockholm

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Re: J2ME moj mali midlet nece da radi

^{29.01.2009. u 11:41 - pre 185 meseci}

Samo o threading-u, nadam se da ne postoji neka drasticna razlika kod J2ME u odnosu na standardnu Javu.

Kada pozoves th.start() tvoj thread dobija zaseban kontekst izvrsavanja, nezavistan od thread-a koji ga je inicirao.
Takodje i thread inicijator nastavlja sa izvrsavanjaem, konkurentno sa thread-om koji je inicirao.
To znaci da ti dalje nemas nikakvu garanciju kako ce se Thread Scheduler ponasati i koji thread ce pustati kad da se izvrsava.

U tvom slucaju ti pozoves thread i odmah u sledecoj liniji proveravas rezultat izvrsavanja tog thread-a (!?).
Pretpostavljam da postoji neki razlog zasto si se odlucio da koristis thread-ove, ali ovako se sa njima ne radi. Moras da se obezbedis da je thread zavrsio svoj posao i presao u dead status da bi proveravao njegove efekte.
Ovako ti odmah prelazis na proveru vrednosti jmbg a najverovatnije ta vrednost nije postavljena od strane th thread-a pa te vraca na "glavnu stranu".

Takodje, linija if (cn.GetJmbg() == "") je problematicna, obzirom da proveravas String. Koristi equals() kao sto imas nesto iznad u kodu.

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