maybeOf method Null safety

AnimatedListState? maybeOf(
  1. BuildContext context

The state from the closest instance of this class that encloses the given context.

This method is typically used by AnimatedList item widgets that insert or remove items in response to user input.

If no AnimatedList surrounds the context given, then this function will return null.

This method can be expensive (it walks the element tree).

See also:

  • of, a similar function that will throw if no AnimatedList ancestor is found.


static AnimatedListState? maybeOf(BuildContext context) {
  assert(context != null);
  return context.findAncestorStateOfType<AnimatedListState>();