Your solution might not always work because you do not save/restore the Canvas in dispatchDraw().
On Mon, Jul 27, 2009 at 2:46 AM, Jeff Sharkey<[email protected]> wrote: > > It's actually really easy, and you don't need to use animations. I > did something like this recently by using a wrapper layout that > adjusts the Canvas and any MotionEvents. (You could also use this > approach rotate the entire layout to any arbitrary angle.) > > I think romainguy told me to use Canvas.concat(mForward) instead of > setMatrix(), but I haven't updated the code in awhile. > > > > private static class FlipLayout extends FrameLayout { > private Matrix mForward = new Matrix(); > private Matrix mReverse = new Matrix(); > private float[] mTemp = new float[2]; > > public FlipLayout(Context context) { > super(context); > > mForward.postRotate(180); > mForward.invert(mReverse); > } > > �...@override > protected void dispatchDraw(Canvas canvas) { > canvas.setMatrix(mForward); > super.dispatchDraw(canvas); > } > > �...@override > public boolean dispatchTouchEvent(MotionEvent event) { > final float[] temp = mTemp; > temp[0] = event.getX(); > temp[1] = event.getY(); > > mReverse.mapPoints(temp); > > event.setLocation(temp[0], temp[1]); > return super.dispatchTouchEvent(event); > } > } > > > > > On Fri, Jul 24, 2009 at 10:53 PM, Josh Hoffman<[email protected]> wrote: >> >> I posted earlier today on this topic, but I'm re-posting as I haven't >> been able to locate my post via search. I apologize if this is indeed >> a double-post, but it seems something went wrong with the original. >> >> I've been trying to find a means of rotating a view such that it is >> flipped upside-down and stays that way. I found the Rotation Animation >> method, but I have been unable to find a means of keeping the view >> rotated. Repeating the animation doesn't suit my purposes, and in fact >> I don't want an animation at all if possible. What I would like is >> something akin to a transformation, except to be used on a TextView or >> a LinearLayout. >> >> I have considering overriding methods to accomplish this task by >> slightly modifying the animation code, but I'm not sure how extensive >> the work for this would be. Additionally, I'm not sure where to find >> the source for those methods. >> >> If anyone could recommend a means of accomplishing this task, whether >> it be by an override or perhaps something simple that I am missing, I >> would appreciate it very much. Thanks! >> >> > >> > > > > -- > Jeff Sharkey > [email protected] > > > > -- 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 --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
