How to detect an interaction of the user with a VerticalFieldManager object?

Hello

It is a question for those who have more experience with gui on BB things.  I use the eclipse with Simulator pack 6 and 9800 component plugin.

I have a VerticalFieldManager (VFM) object that contains a few fields menu. I would like to detect when the user attempts to modify one of these fields, to load a file and update the menus. The thing is that these menus are usually not changed by a user, perhaps only once for the time up-front, something like the choice of your country and city and other, then you will not change that the next time around. So I want to avoid loading the file and simply use the settings saved in the place. Here is what I tried and the solutions I've had but NOT as aestatically

(1) I can not load the file as a response to one of the modification of fields (using setChangeListener) because it is already too late and the present menu is outdated.

(2) I can add a checkbox to the optimization of resources and take care to load the file and update the menus there. It works, but I DON'T want. It's ugly and not easy to flow!

(3) I tried to setChangeListener for the optimization of resources, but it receives no change! Here is the code for my VFM:

the final private class OkVerticalFieldManager extends VerticalFieldManager implements FieldChangeListener
{
----------------------------

----------------------------

' Public Sub fieldChanged (field field, int context)
{
If ((contexte & FieldChangeListener.PROGRAMMATIC) == 0)
{

----------------------------------------------

-------------------------------------------

}

}

}

(4) I tried to listen to reminder to focus on the optimization of resources, but it is called by display from the beginning and it seems that I can't control it. I mean I don't want to be called until the user actually click on the object.

So I hope that there is a better way to detect a user of ANY click or an interaction with the optimization of resources and I catch and do my thing, before the opening of the menus in there.

Hope that this clear enough.

Thank you.

A few possibilities:

1. you can check the field with emphasis (to use VOR getLeafFieldWithFocus()) in your makeMenu() and branch accordingly.

2. you can define listener focus on each field change and bake menu items when its focusChanged() method is called with equal to FOCUS_GAINED eventType. There you can check the setting of field and prepare the relevant menu items.

You can use the same setCookie/getCookie approach I have proposed before in both scenarios if you wish.

Tags: BlackBerry Developers

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