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spark.transitions 

ViewTransitionBase  - AS3 Flex

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Appendixes

What's New
Compiler Errors
Compiler Warnings
Run-Time Errors
Migrating to ActionScript 3
Supported Character Sets
MXML Only Tags
Motion XML Elements
Timed Text Tags
List of deprecated elements
Accessibility Implementation Constants
How to Use ActionScript Examples
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(Preview)
Packagespark.transitions
Classpublic class ViewTransitionBase
InheritanceViewTransitionBase Inheritance EventDispatcher Inheritance Object
Subclasses CrossFadeViewTransition, FlipViewTransition, SlideViewTransition, ZoomViewTransition

Language Version: ActionScript 3.0
Product Version: Flex 4.5
Runtime Versions: AIR 2.5

The ViewTransitionBase class is the base class for all view transitions. It is not intended to be used as a transition on its own. In addition to providing common convenience and helper methods used by view transitions, this class provides a default action bar transition sequence.

When a view transition is initialized, the owning view navigator sets the startView and endView properties to the views the transition animates. The navigator property is set to the view navigator.

The lifecycle of a transition is as follows:

  • The transition starts with the captureStartValues() method. When this method is called, the navigator is currently in the start state. At this time, the transition should capture any start values or bitmaps that it requires.
  • A validation pass is performed on the pending view, and the captureEndValues() method is called. At this time, the transition captures any properties or bitmaps representations from the pending view.
  • The prepareForPlay() method is then called, which allows the transition to perform any further preparations, such as preparing a Spark effects sequence, or positioning transient elements on the display list.
  • After a final validation pass, if necessary, the play() method is called by the navigator to perform the actual transition.
  • Prior to any animation starting, the start event is dispatched.
  • When a transition completes, it dispatches an end event.

Note:Create and configure view transitions in ActionScript; you cannot create them in MXML.



Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
      duration : Number
Duration of the transition, in milliseconds.
ViewTransitionBase
      easer : IEaser
The easing behavior for this transition.
ViewTransitionBase
      endView : View
The view that the navigator is transitioning to, as set by the owning ViewNavigator object.
ViewTransitionBase
      navigator : ViewNavigator
Reference to the owning ViewNavigator instance set by the owning ViewNavigator.
ViewTransitionBase
      startView : View
The currently active view of the view navigator, as set by the owning view navigator.
ViewTransitionBase
      suspendBackgroundProcessing : Boolean
When set to true, the UIComponent.suspendBackgroundProcessing() method is invoked prior to the transition playing.
ViewTransitionBase
      transitionControlsWithContent : Boolean
When set to true, the primary view transition is used to transition the view navigator in its entirety, including the action bar.
ViewTransitionBase
Public Methods
 MethodDefined By
  
Constructor.
ViewTransitionBase
 Inherited
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener receives notification of an event.
EventDispatcher
  
Called by the ViewNavigator during the preparation phase of a transition.
ViewTransitionBase
  
Called by the ViewNavigator during the preparation phase of a transition.
ViewTransitionBase
 Inherited
Dispatches an event into the event flow.
EventDispatcher
 Inherited
Checks whether the EventDispatcher object has any listeners registered for a specific type of event.
EventDispatcher
 Inherited
Indicates whether an object has a specified property defined.
Object
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
  
    play():void
Called by the ViewNavigator when the transition should begin animating.
ViewTransitionBase
  
Called by the ViewNavigator during the preparation phase of a transition.
ViewTransitionBase
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void
Removes a listener from the EventDispatcher object.
EventDispatcher
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
Returns the string representation of the specified object.
Object
 Inherited
Returns the primitive value of the specified object.
Object
 Inherited
Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.
EventDispatcher
Protected Methods
 MethodDefined By
  
Determine if Flex can perform a transition on action bar or tab bar content independently of the views.
ViewTransitionBase
  
    cleanUp():void
Called after the transition completes.
ViewTransitionBase
  
Called by the default prepareForPlay() implementation, this method is responsible for creating the Spark effect played on the action bar when the transition starts.
ViewTransitionBase
  
Called by the default prepareForPlay() implementation, this method is responsible for creating the Spark effect played to transition the entire navigator, inclusive of the control bar content, when necessary.
ViewTransitionBase
  
Called by the default prepareForPlay() implementation, this method is responsible for creating the Spark effect played on the tab bar when the transition starts.
ViewTransitionBase
  
Called by the default prepareForPlay() implementation, this method is responsible for creating the Spark effect played on the current and next view when the transition starts.
ViewTransitionBase
  
    getSnapshot(target:UIComponent, padding:int = 4, globalPosition:Point = null):BitmapImage
Used to render snap shots of screen elements in preparation for transitioning.
ViewTransitionBase
  
Called by the transition to indicate that the transition has completed.
ViewTransitionBase
Events
 Event Summary Defined By
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.EventDispatcher
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.EventDispatcher
  Dispatched when the transition completes.ViewTransitionBase
  Dispatched when the transition starts.ViewTransitionBase
Property Detail
Constructor Detail
Method Detail
Event Detail