Question

I have an array of CheckboxField[] elements that I need to dynamically initialize. My sample code is –

class abc extends MainScreen implements FieldChangeListener {
    CheckboxField[] boxField;
    abc() {
        .
        .
        .
        boxField = new CheckboxField[length];
        VerticalFieldManager vfm = new VerticalFieldManager();
        for(int i=0; i<length; i++) {
            boxField[i] = new CheckboxField(var[i], false);
            boxField[i].setChangeListener(this);
            vfm.add(boxField[i]);
        }
        add(vfm);
    }

    public void fieldChanged(Field field, int context) {
        // The idea is to disable all the other checkboxes when one
        // is clicked. 
        boxField[0].setChecked(false); // Gives stackoverflow error on JVM.
    }
}

Any help?

Edit: The problem only seems to be with .setChecked(boolean)
I’ve tried chkboxField[0].setFont(), chkboxField.getChecked(), both of them seem to work.

Answer 1

So, what’s apparently happening is boxField[i].setChecked(false) calls the FieldChangeListener again, and this loops infinitely till the stack blows.

I was told to use

if(context != FieldChangeListener.PROGRAMMATIC) {
   boxField[i].setChecked(false); 
}