Have a look at android.graphics.drawable.AnimationDrawable. You might be able to use it... though it's a bit limited.
It isn't clear what you are actually trying to accomplish. I suspect that you are trying to optimize repainting the screen. Is this just a vague worry or is there something, in particular, that is running to slowly? The answer to your question is that it is always the onDraw method that gets called, when you need to redraw the view. I'd guess that you will set up an animation thread to redraw the view. That thread will, probably, update the position of the 2nd image but not the first, and then request a repaint. That will generate a call to onDraw. You can make onDraw as clever is is necessary. If your scene is expensive to compute and only the 2nd image moves, you might be able to cache the first as a bitMap. From what I've been hearing, though, that won't necessarily speed things up, post Honeycomb, because of the way it optimizes drawing. ... and, of course, there's OpenGL. -blake .... if not, though, you'll probably need to spawn an animator thread, that redraws your view after On Aug 28, 6:31 am, "A. Purohit" <[email protected]> wrote: > Hi, > How do we display a moving image in Android? > For example, I have 2 images, first one covers the full screen, 2nd one > which is transparent and small will be moving. > > So, first I show bigger one to cover complete screen then show 2nd one but > now I want to move 2nd one so that it shows moving thing. > > I am reading docs on this but couldn't control my self! > > Do we have option to keep first one as it is and some move option for 2nd > bitmap? Or we display both once again with just changing x,y for 2nd one? > > Do we have the first option? > > Thanks, > -A -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
