FlowFieldManager disappears when layout is set - BlackBerryForums.com : Your Number One BlackBerry Community

Onosa · **FlowFieldManager disappears when layout is set -** 07-24-2008, 08:56 AM

I created a flow field manager similar to the one below...

Code:

ffm = new FlowFieldManager(FlowFieldManager.VERTICAL_SCROLL|FlowFieldManager.HORIZONTAL_SCROLLBAR|FlowFieldManager.HORIZONTAL_SCROLL){
                        protected void sublayout(int maxWidth, int maxHeight)
                        {
                            //mySum is equal to about 687ish
                            super.sublayout(mySum, maxHeight);
                            setExtent(mySum, maxHeight);
                        }
                    };

and everything is fine, except that there is a huge blank space after the field. So then I tried this...

Code:

ffm = new FlowFieldManager(FlowFieldManager.VERTICAL_SCROLL|FlowFieldManager.HORIZONTAL_SCROLLBAR|FlowFieldManager.HORIZONTAL_SCROLL){
                        protected void sublayout(int maxWidth, int maxHeight)
                        {
                            //mySum is equal to about 687ish
                            super.sublayout(mySum, 400);
                            setExtent(mySum, 400);
                        }
                    };

and the entire thing disappears. The field only needs to be 280 pixels high. I thought that making the height a larger number than necessary would fix any issues. I don't understand why the flow field manager only seems to work when the height is maxHeight.
Please help.

Ivanov · 07-25-2008, 01:59 AM

can you post the whole code for your screen to see what you mean? Some screenshots would help, too.

normally if you do not set the extent of the manager, it's size will be automatically adapted to the fields it contains (of course if not using USE_ALL_WIDTH, USE_ALL_HEIGHT)