build method

Widget build({
  1. required Animation<double> animation,
  2. required Widget child,
  3. Map<String, Object?> params = const {},
})

Builds the animated widget for the forward direction.

animation — 0.0 → 1.0 where 0.0 = invisible/start, 1.0 = visible/end. child — the widget being animated. params — optional configuration map (typed by each plugin).

Concrete subclasses must override this method.

Implementation

Widget build({
  required Animation<double> animation,
  required Widget child,
  Map<String, Object?> params = const {},
}) {
  throw UnimplementedError(
    '$runtimeType must override TransitionPlugin.build()',
  );
}