ImageView interpolation while animating

I am rotating an imagev开发者_如何转开发iew using a RotateAnimation, but the rotation is quite slow (22° in two seconds!).

The image quality during the animation is very pixelated from what appears to be a nearest neighbor interpolation.

Is there any way to change this?

I've tried setAntiAlias(true) on the BitmapDrawable with no effect.