fieldchangelistener shot by mistake on Edit fields

Hi people,

I use the RIM JDE 4.2.1 on windows and the 8800 Simulator.  I install a fieldchangelistener on an edit field to detect the moment where I should be offering save a screen.  But the listener is shot before any changes to the screen are made... This is the expected behavior?  Here is an example of code to the constructor of the screen:

private static class AllFieldChangeListener implements FieldChangeListener {
    public void fieldChanged(Field field, int context) {
        isDirty = true;
    }
}

nameField.setText(options.names[idx]);

FieldChangeListener myListener = new AllFieldChangeListener();
nameField.setChangeListener(myListener);

add(nameField);

I look in the debugger, the fieldchangelistener shot (watch where isDirty is true) at the time where this form is drawn: the referenced field is above edit field (in fact I have several fields on the screen and for each/all triggers are being fired once for each edit field).  I've done this kind of thing before for the checkbox fields set up by program the enabled or disabled state of the button and the listener does not until such time as the user interacts with the screen.

I am puzzled, someone has an idea what I am doing wrong?

Thanks for any help.

-Scott

Advertisement

Field changes listener will be called even if you set the text programmatically. To ignore the changes programattiic check that the context is not equal to FieldChangeListener.PROGRAMMATIC

private static class AllFieldChangeListener implements FieldChangeListener {
    public void fieldChanged(Field field, int context) {
           if(field == myeditField && context != FieldChangeListener.PROGRAMMATIC) {
        isDirty = true;
           }
    }
}

BTW why you set isDirty using this method? You can simply use nameField.isDirty () to check if the field is dirty when you want.

Tags: BlackBerry Developers

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