Unfortunately no. There is a trick though, used by ProgressBar. You
can use an AlphaAnimation and call its getTransformation() yourself
from your draw method. This will give you an alpha value between 0.0
and 1.0 which you can then use to animate anything. Here is how it's
used in ProgressBar.java (the "alpha" value is used to set a
Drawable's level property):
long time = getDrawingTime();
if (mAnimation != null) {
mAnimation.getTransformation(time, mTransformation);
float scale = mTransformation.getAlpha();
try {
mInDrawing = true;
d.setLevel((int) (scale * MAX_LEVEL));
} finally {
mInDrawing = false;
}
if (SystemClock.uptimeMillis() - mLastDrawTime >=
ANIMATION_RESOLUTION) {
mLastDrawTime = SystemClock.uptimeMillis();
postInvalidateDelayed(ANIMATION_RESOLUTION);
}
}
Note that I have plans for a much more flexible animation system in a
future version of Android.
On Wed, Jul 22, 2009 at 11:44 AM, Jason
Proctor<[email protected]> wrote:
>
> using the stock animation system, it looks like i'm constrained in
> behaviour by the Transformation class. i'd like to animate by
> changing a mesh, can the system support this?
>
>
> --
> jason.software.particle
>
> >
>
--
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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