When you call invalidate() to redraw your View, specify what area to redraw:
invalidate(Rect t) or invalidate(int left, int top, int right, int bottom) On Sun, Jan 10, 2010 at 8:44 PM, chris harper <[email protected]> wrote: > Hi > > When doing a lot of updates on a canvas (like an animation) if you > only want to update a small part of the canvas when onDraw is called > instead of redrawing the entire canvas is there a way to only redraw > one part and keep the rest of the canvas the exact same to save on > "Drawing Time"? > > For example a scene with a background and a character in it and you > want him to wave so you only want to update the arm moving and keep > the rest of the scene the same without having to redraw it all (to > save on drawing time). > > Is there a way to do this? Or is it an all or nothing deal when > redrawing a canvas? > > If there is an obvious way or if I misinterpreted how the onDraw works > then I apologize. > > Thank you > > -Chris > > -- > 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 > -- Romain Guy Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them
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