AnimationSpec class Animation

Specification for animating state changes.

You select the type of animation you want through the constructor you use to create the AnimationSpec.

Any AnimationSpec instance can be refined by calling one of the modifiers. A modifier returns a new AnimationSpec instance:

To apply an AnimationSpec to a state change, use Animated, withAnimation or AnimatingStateMixin.

Examples

Create an AnimationSpec with modifiers:

import 'package:flutter/animation.dart';

final animation = AnimationSpec.curve(Curves.ease, 300.ms)
    .delay(250.s)
    .repeat(2)
    .speed(2.0);
Mixed-in types
Annotations

Constructors

AnimationSpec()
Default animation which uses defaultCurve and defaultDuration.
const
AnimationSpec.curve(Curve curve, [Duration duration = defaultDuration])
Animation which uses a curve and animates for a fixed duration.

Properties

hashCode int
The hash code for this object.
no setteroverride
runtimeType Type
A representation of the runtime type of the object.
no setterinherited

Methods

debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
override
delay(Duration delay) AnimationSpec
Returns a copy of this AnimationSpec which will start animating after the given delay.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
repeat(int count, {bool reverse = true}) AnimationSpec
Returns a copy of this AnimationSpec which repeats count times.
repeatForever({bool reverse = true}) AnimationSpec
Returns a copy of this AnimationSpec which repeats forever.
speed(double speed) AnimationSpec
Returns a copy of this AnimationSpec with the given speed.
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) String
A string representation of this object.
inherited
toStringShort() String
A brief description of this object, usually just the runtimeType and the hashCode.
inherited

Operators

operator ==(Object other) bool
The equality operator.
override

Constants

defaultCurve → const Curve
The default Curve used for animations, when no curve is specified.
defaultDuration → const Duration
The default duration used for animations, when no duration is specified.