ClassNotFoundError : BaseInterpolator

[fleficher]

Hi,,

On some devices (eg : my Asus Zenfone 2), using BallView make my app crash (i receive a SIGSERV error).
After some researches, i found that the error was due to the usage of BaseInterpolator class that cannot be found.
Indeed, this class is only available from API 22, making the app crash.
http://developer.android.com/reference/android/view/animation/BaseInterpolator.html

One solution is to replace the BaseInterpolator reference with Interpolator interface.