defaultTransitionBuilder static method
The transition builder used as the default value of transitionBuilder.
The new child is given a FadeTransition which increases opacity as the animation goes from 0.0 to 1.0, and decreases when the animation is reversed.
This is an AnimatedSwitcherTransitionBuilder function.
Implementation
static Widget defaultTransitionBuilder(Widget child, Animation<double> animation) {
return FadeTransition(
key: ValueKey<Key?>(child.key),
opacity: animation,
child: child,
);
}