Java Development

[amitginterface]

I had added one VerticalFieldManager on a Screen. I want to handle event on that manager in such a way that it should set particular variable value with respect to that manager preferred height. Following is my code snippet, please check it. VerticalFieldManager leftVfm =newVerticalFieldManager(Manager.VERTICAL_SCROLL){     protectedvoid sublayout(int width,int height){         super.sublayout(screenWidth -150, INFO_HEADER_HEIGHT);         setExtent(screenWidth -150, INFO_HEADER_HEIGHT);     }     protectedboolean touchEvent(TouchEvent message){         int eventCode = message.getEvent();         if(eventCode ==TouchEvent.DOWN){             // leftheight should be leftVfm.getPreferredHeight();             INFO_HEADER_HEIGHT = leftheight;         }         returntrue;     } };

[simon_hain]

calling http://www.blackberry.com/developers/docs/7.1.0api/net/rim/device/api/ui/Field.html#updateLayout() should trigger a new layout

[amitginterface]

I am asking u another question ur answer is not related to my question

[amitginterface]

Any help will be accepted.I am still stuck to that issue

[peter_strange]

I am not clear on what you want to do and why.  It would appear from your code that you want to change the height of the Manager when it is touched, which to me seems a little odd.  If you explain what we are trying to achieve we can perhaps suggest how it should be done (e.g. using a Field and not a Manager), rather than doing something artificial.  So can you explain?  Thanks.

[amitginterface]

you understand my question exactly right way.I had added one Vertical manager on my screen and I want to increase height of that manager when user taps any where on that manager.my main purpose is that  I want to allot particular area to that vertical field manager when i am adding it on a screen but all the data whichever I had added in that manager cant be viewable at a time(data is big & height of manager is less) to  so make it viewable I want to handle touch screen event so that when user taps on that manager the height of manager should increase so that all the content should be viewable

[simon_hain]

and you are aware of the fact that a manager is a layout element and not visible on the screen per se?
(unless changed by background, border or similar)

[peter_strange]

Simon's point is valid.  I understand your wish to expand or contract the screen space used by the Manager, and I don't think that is too difficult, but I think that you would be better having some viisble indication, like a button, or perhaps a menu, that the user can easily use to control this. 

[amitginterface]

Actually the users for which i am developing this application are having requirement that they dont want the button or menu option.they only want to expand that manager by clicking anywhere on it.

[simon_hain]

did you try what i suggested in my first post?
when you update the value used in layout and trigger a re-layout it should change its size.