ScrollAdapter class

Drives an Animate animation from a ScrollController.

begin and end adjust the pixel range for the scroll to update the animation within. Values <0 are calculated relative to the end of the scroll. They default to minScrollExtent and maxScrollExtent respectively.

For example, this starts fading/sliding in the text once the list scrolls to 100px, and finishes 200px before the end of the scroll:

ListView(
  controller: scrollController,
  children: items,
);
Text("Hello").animate(
  adapter: ScrollAdapter(
    scrollController,
    begin: 100, // relative to start of scroll
    end: -200,  // relative to end
  )
).fadeIn().slide();

Inheritance

• Object
• Adapter
• ChangeNotifierAdapter
• ScrollAdapter

Annotations

• @immutable

Constructors

ScrollAdapter(ScrollController scrollController, {double? begin, double? end, bool? animated})

Properties

animated → bool

Indicates whether the adapter should animate to new values. If false, it will jump to the new value, if true it will animate to the value using a duration calculated from the animation's total duration and the value change. Defaults to false.

final, inherited

begin → double?

final

end → double?

final

hashCode → int

The hash code for this object.

no setter, inherited

notifier → ChangeNotifier

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

valueGetter → ValueGetter<double>

final, inherited

Methods

init(AnimationController controller) → void

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited