I do not know how to animate a component

I want to animate a Button when it is added to a Form , which layout manager is a GridLayout(2,2); I want that the B开发者_开发问答utton is moving downward smoothly before occupying the grid cell area for its position. How to do that animation in LWUIT?

Just add the button to the form and don't invoke repaint/revalidate etc. instead invoke myForm.animateLayout(500);.

This will only work on 1.5 or newer obviously, you can see samples of this in the animation and layout sections in the LWUIT demo.