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?

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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.