createController method

ScrollController createController(String key, { double initialScrollOffset = 0.0, bool keepScrollOffset = true, })

Creates a new ScrollController with the given key.

If a controller with the same key already exists, it will be disposed and replaced with a new one.

initialScrollOffset - The initial scroll offset of the controller. keepScrollOffset - Whether to keep the scroll offset when the controller is disposed and recreated.

Implementation

ScrollController createController(
  String key, {
  double initialScrollOffset = 0.0,
  bool keepScrollOffset = true,
}) {
  // Dispose existing controller if any
  if (_controllers.containsKey(key)) {
    _controllers[key]!.dispose();
  }

  final controller = ScrollController(
    initialScrollOffset: initialScrollOffset,
    keepScrollOffset: keepScrollOffset,
  );

  _controllers[key] = controller;
  return controller;
}