AnimChain class

AnimChain lets you define a sequence of widgets, where each one will be displayed after the previous. You can chain widgets which are totally different from one another. However, if you define implicitly animated widgets (like AnimatedAlignPositioned, AnimatedContainer, AnimatedOpacity etc) you can create an animation.

Example:

return AnimChain(repeat: true, initialDelay: Duration(milliseconds: 150))
   // Show the yellow box and wait 5 seconds.
   .next(
      wait: Duration(seconds: 5),
      widget: AnimatedAlignPositioned(
         alignment: Alignment.bottomCenter,
         rotateDegrees: 0,
         child: Container(color: Colors.yellow),
         ),
      )
   // Rotate to the red box in 3 seconds.
   .next(
      wait: Duration(seconds: 3),
      widget: AnimatedAlignPositioned(
         duration: Duration(seconds: 3),
         rotateDegrees: 180,
         child: Container(color: Colors.red),
         ),
      )
   // Finally, translate the blue in the vertical axis.
   .next(
      widget: AnimatedAlignPositioned(
         duration: Duration(seconds: 15),
         alignment: Alignment.bottomCenter,
         dy: 150,
         rotateDegrees: 180,
         child: Container(color: Colors.blue),
         ),
      ),
    );

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatefulWidget
• AnimChain

Constructors

AnimChain({Key? key, bool repeat = false, Duration? initialDelay})

Properties

durations → List<Duration>

final

hashCode → int

The hash code for this object.

no setter, inherited

initialDelay → Duration?

initialDelay is the initial delay before starting the animation chain. It's only applied at first, when the widget is put in the screen. It will not be repeated when repeat is true. For this reason, it is different from the delay you can apply when you use the wait parameter of the next method, which is repeated.

final

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

repeat → bool

if repeat is true, the animation chain will be repeated as soon as it ends. Otherwise, it will play only once.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

widgets → List<Widget>

final

Methods

createElement() → StatefulElement

Creates a StatefulElement to manage this widget's location in the tree.

inherited

createState() → _AnimChainState

Creates the mutable state for this widget at a given location in the tree.

override

debugDescribeChildren() → List<DiagnosticsNode>

Returns a list of DiagnosticsNode objects describing this node's children.

inherited

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

next({required Widget widget, Duration wait = const Duration()}) → AnimChain

Define the next widget in the chain. The wait parameter specifies for how long it should be displayed.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

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

toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a string representation of this node and its descendants.

inherited

toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a one-line detailed description of the object.

inherited

toStringShort() → String

A short, textual description of this widget.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited