Re: [android-developers] game engine, how to organize animation and etc. in android ?

You should use the method invalidate() inside a view:

@Override

protected void onDraw (Canvas canvas) 

{

        invalidate();

        // Do all your drawings here

        invalidate();

} 

First, it tells android that the whole screen should be redrawn, afterwards it tells android that the screen should be redrawn again with the drawings you did.

2011/7/3 razor <razorjackes@gmail.com>

Hi.

I'm quite new to android and i want to make some animation (simple
game later) like i did on windows (all programatically).
So I have questions what classes should be responsible for.

Activity
It's a base class for whole logic like updating variables (computing
move etc.)
Should I create a new Thread on onCreate and run it onResume ? (I need
continuous computing for moving objects)

View
Only for drawing animation
onDraw method for clearing Canvas (how to do this quickly? drawRect is
efficent ? ) and drawing objects.
Should I invalidate that view or just call onDraw 30 times per second?

Regards
razor

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