withStartAction
Specifies an action to take place when the next animation runs. If there is a startDelay set on this ViewPropertyAnimator, then the action will run after that startDelay expires, when the actual animation begins. This method, along with withEndAction, is intended to help facilitate choreographing ViewPropertyAnimator animations with other animations or actions in the application.
Return
This object, allowing calls to methods in this class to be chained.
Parameters
runnable
The action to run when the next animation starts.