TextField on 6230 - extra screen- why?

[nokiatobe]

Hello!
I have written a small application with the netbeans visual designer. In a list I make a choice and in a next screen (form with TextField) I enter a number to calculate something.
The program works perfect on the S40 emulator and also on my 6230.

The only problem is that on the 6230 in the screen with the TextField I cannot enter a number. I have to press 'change' and then I get to another screen.

How can I enter a value directly without the extra screen?
I have tried TextBox displayable from the netbeans toolbox but then my 6230 says "invalid application".

Tobias.

[raj_J2ME]

Hi,
The functionality must not be depends how how you create the module.Well if you have a textfield and is supposed provide the facility that user can enter the values then it must take the values..

Anyways,at what action you are moving to the second screen - form with TextField..at the time of the action you have to do following tasks -

@ create the form
@ create the textfield
@ append the textfield on the form
@ set the form as current displayable item.
@ then your form and the textfield will come into picture..
@ you can easily enter the values in the textfield.

According to you, user can not enter the values in the TF..is that throwing the exception...
Thank,

[internetlabor]

Hello Tobias,

about the Textfield with the Form:
this is the normal behavior for Forms on these phones. It is inhertited from the time the screens were even smaller. The idea is to make it simple, by always doing just one thing on each screen: the form is to choose the field to edit, and the editing itself is another screen.

If you have a form with just a textfield, a Textbox is a good option.
I don't know what went wrong the your Textbox. I guess it is something different you changed. Maybe you activated CLDC 1.1 ?


Regards

Karsten Meier

[raj_J2ME]

Hi,
What I would say is that first check by developing the same by through the code..

Thanks,

[amardeepjaiman]

can u provide us code wht u wriiteen?





~Amardeep

[nokiatobe]

Hello guys,

thanks for the answers. This is part of my source code (syntax is wrong, i have deleted a few rows for easier reading).

private Form mainForm;
private Form formAnzahl;
private TextField textFieldAnzahl;
private List auswahlListe;

public void commandAction(Command command, Displayable displayable) {
        if (displayable == auswahlListe) {
            if (command == List.SELECT_COMMAND) {
                auswahlListeAction();
            } else if (command == listeBackCommand) {
                switchDisplayable(null, getMainForm());
            }
        } else if (displayable == formAnzahl) {
            if (command == anzahlOkCommand) {
 	        
		... //some conversion and calculation with textFieldAnzahl.getString();
		
                switchDisplayable(null, getMainForm());//back to main screen


public void auswahlListeAction() {
        String __selectedString = getAuswahlListe().getString(getAuswahlListe().getSelectedIndex());
    listIndex = getAuswahlListe().getSelectedIndex();
    //look up some item with index    

    //go to form with textfield "textFieldAnzahl"
    switchDisplayable(null, getFormAnzahl());



public Form getFormAnzahl() {
        if (formAnzahl == null) {
            formAnzahl = new Form("Menge eingeben", new Item[] { getStringItemAuswahl(), getTextFieldAnzahl() });
            formAnzahl.addCommand(getAnzahlOkCommand());
            formAnzahl.addCommand(getBackCommand());
            formAnzahl.setCommandListener(this);

        return formAnzahl;
    }



public TextField getTextFieldAnzahl() {
        if (textFieldAnzahl == null) {
            textFieldAnzahl = new TextField("Anzahl:", "1", 32, TextField.NUMERIC);//GEN-LINE:|40-getter|1|40-postInit
        }
        return textFieldAnzahl;
    }

@R a j : I feel the code reflects what you say.

I don't know what went wrong the your Textbox. I guess it is something different you changed. Maybe you activated CLDC 1.1 ?

I think CLDC 1.1 may be activated. I'll check. But why would that cause the error message?

Regards,
Tobias.

[internetlabor]

Hello Tobias,

that seem to be my mistake, 6230 is a rather old phone, I believed it is CLDC 1.0.

Nevertheless, if you get the message "invalid application",
chances are the error is not in the code.
Wrong specification (Midp 2.1?), build without cleanup, to big jar file, ...
there are many reasons.
Watch also the message window of the compile/build if you find something suspect.

How do you install?

Form is part of the High Level-UI. You can not change the behaviour of a textfield of a form. If it is really a problem for you, you need to use something different than a form (or a newer phone). If you just begin to develop, I suggest that you leave it as it is, until you got more experience.

@raj_J2ME

What I would say is that first check by developing the same by through the code..

What does this mean?


Regards

Karsten Meier

[nokiatobe]

Hello,

thanks, Karsten for pointing me in the right direction. I had MIDP 2.1 activated. After changing it to MIDP 2.0 the TextBox works fine and I will use it instead of TextField.

By the way, I tried CLDC 1.0 also, but it doesn't support float values.

Regards,
Tobias.