Hi, There is absolutely no need to do all these fancy computations yourself. Instead you can use the following constructor (or better yet, define the animation in XML):
RotateAnimation(float fromDegrees, float toDegrees, int pivotXType, float pivotXValue, int pivotYType, float pivotYValue) Here is an example: new RotateAnimation(0.0f, 180.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); This animation will rotate about the center of the animated View. On Sun, Jan 18, 2009 at 2:04 AM, skink <[email protected]> wrote: > > > > Mark Murphy wrote: >> Rotate with unknown pivot. If you're seeing a rotation around the center >> point of the View with the parameters I gave you, then obviously there's >> something a wee bit off with my View. >> >> Hmmm...I have paddingRight and paddingTop values in the layout for this >> ImageView. I wonder if the animation is taking those into account. That >> would explain why 10, 20 would be close to the correct values when I >> hard-wired them in -- the 20 would be the 10px paddingTop plus roughly >> half of the image itself. > > ok, i found it. > > animation stuff works OK: it rotates tho whole view (not image > bounds), run hierarchyviewer and > you'll see that pivot is ok. > > if you try to rotate image itself, try this > > ImageView iv = (ImageView) findViewById(R.id.iv); > Matrix matrix = iv.getImageMatrix(); > RectF dst = new RectF(); > matrix.mapRect(dst, new RectF(iv.getDrawable().getBounds())); > Log.d("Test", "Dst " + dst); > RotateAnimation a = new RotateAnimation(0, 360, iv.getPaddingLeft() + > dst.centerX(), iv.getPaddingTop() + dst.centerY()); > a.setDuration(5000); > iv.startAnimation(a); > > > > > -- 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 -~----------~----~----~----~------~----~------~--~---
