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ValueAnimator Class

Definition

This class provides a simple timing engine for running animations which calculate animated values and set them on target objects.

[Android.Runtime.Register("android/animation/ValueAnimator", DoNotGenerateAcw=true)]
public class ValueAnimator : Android.Animation.Animator
[<Android.Runtime.Register("android/animation/ValueAnimator", DoNotGenerateAcw=true)>]
type ValueAnimator = class
    inherit Animator
Inheritance
ValueAnimator
Derived
Attributes

Remarks

This class provides a simple timing engine for running animations which calculate animated values and set them on target objects.

There is a single timing pulse that all animations use. It runs in a custom handler to ensure that property changes happen on the UI thread.

By default, ValueAnimator uses non-linear time interpolation, via the AccelerateDecelerateInterpolator class, which accelerates into and decelerates out of an animation. This behavior can be changed by calling ValueAnimator#setInterpolator(TimeInterpolator).

Animators can be created from either code or resource files. Here is an example of a ValueAnimator resource file:

{

Java documentation for android.animation.ValueAnimator.

Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.

Constructors

ValueAnimator()

Creates a new ValueAnimator object.

ValueAnimator(IntPtr, JniHandleOwnership)

A constructor used when creating managed representations of JNI objects; called by the runtime.

Fields

DurationInfinite

The value used to indicate infinite duration (e.

(Inherited from Animator)
Infinite

This value used used with the #setRepeatCount(int) property to repeat the animation indefinitely.

Restart
Obsolete.

When the animation reaches the end and repeatCount is INFINITE or a positive value, the animation restarts from the beginning.

Properties

AnimatedFraction

Returns the current animation fraction, which is the elapsed/interpolated fraction used in the most recent frame update on the animation.

AnimatedValue

The most recent value calculated by this ValueAnimator when there is just one property being animated.

Class

Returns the runtime class of this Object.

(Inherited from Object)
CurrentPlayTime

Gets the current position of the animation in time, which is equal to the current time minus the time that the animation started. -or- Sets the position of the animation to the specified point in time.

Duration

Gets the length of the animation.

DurationScale

Returns the system-wide scaling factor for Animator-based animations.

FrameDelay

The amount of time, in milliseconds, between each frame of the animation. -or- The amount of time, in milliseconds, between each frame of the animation.

Handle

The handle to the underlying Android instance.

(Inherited from Object)
Interpolator

Returns the timing interpolator that this animation uses.

(Inherited from Animator)
IsPaused

Returns whether this animator is currently in a paused state.

(Inherited from Animator)
IsRunning

Returns whether this Animator is currently running (having been started and gone past any initial startDelay period and not yet ended).

IsStarted

Returns whether this Animator has been started and not yet ended.

(Inherited from Animator)
JniIdentityHashCode (Inherited from Object)
JniPeerMembers
Listeners

Gets the set of android.animation.Animator.AnimatorListener objects that are currently listening for events on this Animator object.

(Inherited from Animator)
PeerReference (Inherited from Object)
RepeatCount

Defines how many times the animation should repeat. -or- Sets how many times the animation should be repeated.

RepeatMode

Defines what this animation should do when it reaches the end. -or- Defines what this animation should do when it reaches the end.

StartDelay

The amount of time, in milliseconds, to delay starting the animation after #start() is called. -or- The amount of time, in milliseconds, to delay starting the animation after #start() is called.

ThresholdClass

This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.

ThresholdType

This API supports the Mono for Android infrastructure and is not intended to be used directly from your code.

TotalDuration

Gets the total duration of the animation, accounting for animation sequences, start delay, and repeating.

(Inherited from Animator)

Methods

AddListener(Animator+IAnimatorListener)

Adds a listener to the set of listeners that are sent events through the life of an animation, such as start, repeat, and end.

(Inherited from Animator)
AddPauseListener(Animator+IAnimatorPauseListener)

Adds a pause listener to this animator.

(Inherited from Animator)
AddUpdateListener(ValueAnimator+IAnimatorUpdateListener)

Adds a listener to the set of listeners that are sent update events through the life of an animation.

AreAnimatorsEnabled()

Returns whether animators are currently enabled, system-wide.

Cancel()

Cancels the animation.

(Inherited from Animator)
Clone()

Creates and returns a copy of this Object.

(Inherited from Animator)
Dispose() (Inherited from Object)
Dispose(Boolean) (Inherited from Object)
End()

Ends the animation.

(Inherited from Animator)
Equals(Object)

Indicates whether some other object is "equal to" this one.

(Inherited from Object)
GetAnimatedValue(String)

The most recent value calculated by this ValueAnimator for propertyName.

GetHashCode()

Returns a hash code value for the object.

(Inherited from Object)
GetValues()

Returns the values that this ValueAnimator animates between.

JavaFinalize()

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.

(Inherited from Object)
Notify()

Wakes up a single thread that is waiting on this object's monitor.

(Inherited from Object)
NotifyAll()

Wakes up all threads that are waiting on this object's monitor.

(Inherited from Object)
OfArgb(Int32[])

Constructs and returns a ValueAnimator that animates between color values.

OfFloat(Single[])

Constructs and returns a ValueAnimator that animates between float values.

OfInt(Int32[])

Constructs and returns a ValueAnimator that animates between int values.

OfObject(ITypeEvaluator, Object[])

Constructs and returns a ValueAnimator that animates between Object values.

OfPropertyValuesHolder(PropertyValuesHolder[])

Constructs and returns a ValueAnimator that animates between the values specified in the PropertyValuesHolder objects.

Pause()

Pauses a running animation.

(Inherited from Animator)
RegisterDurationScaleChangeListener(ValueAnimator+IDurationScaleChangeListener)
RemoveAllListeners()

Removes all #addListener(android.animation.Animator.AnimatorListener) listeners and #addPauseListener(android.animation.Animator.AnimatorPauseListener) pauseListeners from this object.

(Inherited from Animator)
RemoveAllUpdateListeners()

Removes all listeners from the set listening to frame updates for this animation.

RemoveListener(Animator+IAnimatorListener)

Removes a listener from the set listening to this animation.

(Inherited from Animator)
RemovePauseListener(Animator+IAnimatorPauseListener)

Removes a pause listener from the set listening to this animation.

(Inherited from Animator)
RemoveUpdateListener(ValueAnimator+IAnimatorUpdateListener)

Removes a listener from the set listening to frame updates for this animation.

Resume()

Resumes a paused animation, causing the animator to pick up where it left off when it was paused.

(Inherited from Animator)
Reverse()

Plays the ValueAnimator in reverse.

SetCurrentFraction(Single)

Sets the position of the animation to the specified fraction.

SetDuration(Int64)

Sets the length of the animation.

SetEvaluator(ITypeEvaluator)

The type evaluator to be used when calculating the animated values of this animation.

SetFloatValues(Single[])

Sets float values that will be animated between.

SetHandle(IntPtr, JniHandleOwnership)

Sets the Handle property.

(Inherited from Object)
SetInterpolator(ITimeInterpolator)

The time interpolator used in calculating the elapsed fraction of this animation.

SetIntValues(Int32[])

Sets int values that will be animated between.

SetObjectValues(Object[])

Sets the values to animate between for this animation.

SetTarget(Object)

Sets the target object whose property will be animated by this animation.

(Inherited from Animator)
SetupEndValues()

This method tells the object to use appropriate information to extract ending values for the animation.

(Inherited from Animator)
SetupStartValues()

This method tells the object to use appropriate information to extract starting values for the animation.

(Inherited from Animator)
SetValues(PropertyValuesHolder[])

Sets the values, per property, being animated between.

Start()

Starts this animation.

(Inherited from Animator)
ToArray<T>() (Inherited from Object)
ToString()

Returns a string representation of the object.

(Inherited from Object)
UnregisterDurationScaleChangeListener(ValueAnimator+IDurationScaleChangeListener)
UnregisterFromRuntime() (Inherited from Object)
Wait()

Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>.

(Inherited from Object)
Wait(Int64)

Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed.

(Inherited from Object)
Wait(Int64, Int32)

Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed.

(Inherited from Object)

Events

AnimationCancel (Inherited from Animator)
AnimationEnd (Inherited from Animator)
AnimationPause (Inherited from Animator)
AnimationRepeat (Inherited from Animator)
AnimationResume (Inherited from Animator)
AnimationStart (Inherited from Animator)
Update

Explicit Interface Implementations

IJavaPeerable.Disposed() (Inherited from Object)
IJavaPeerable.DisposeUnlessReferenced() (Inherited from Object)
IJavaPeerable.Finalized() (Inherited from Object)
IJavaPeerable.JniManagedPeerState (Inherited from Object)
IJavaPeerable.SetJniIdentityHashCode(Int32) (Inherited from Object)
IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) (Inherited from Object)
IJavaPeerable.SetPeerReference(JniObjectReference) (Inherited from Object)

Extension Methods

JavaCast<TResult>(IJavaObject)

Performs an Android runtime-checked type conversion.

JavaCast<TResult>(IJavaObject)
GetJniTypeName(IJavaPeerable)

Applies to