The following call to the drive function of the AnimationController leads to the error message:
The argument type 'ColorTween' can't be assigned to the parameter type 'Animatable'
Animation<Color> animation = animationController.drive(ColorTween(begin: Colors.red, end: colors.blue));
Yet ColorTween is a Tween<Color?> and Tween<T extends dynamic> is an Animatable<T>. How can I fix this error? Is the '?' after Color or 'dynamic' a problem? Explicit casting didn't work either:
type 'ColorTween' is not a subtype of type 'Animatable<Color>' in type cast
flutter 2.0.4
dart 2.12.2