getFraction

Returns the raw fractional progress of this animation between start state of the animation and the end state of the animation. Note that this progress is the global progress of the animation, whereas onProgress will only dispatch the insets that may be inset with inset by parents of views in the hierarchy. Progress per insets animation is global for the entire animation. One animation animates all things together (in, out, ...). If they don't animate together, we'd have multiple animations.

Note: In case the application is controlling the animation, the valued returned here will be the same as the application passed into setInsetsAndAlpha.