Package com.airbnb.lottie.utils

Class LottieValueAnimator

java.lang.Object

android.animation.Animator

android.animation.ValueAnimator

com.airbnb.lottie.utils.BaseLottieAnimator

com.airbnb.lottie.utils.LottieValueAnimator

All Implemented Interfaces:

Choreographer.FrameCallback, Cloneable

public class LottieValueAnimator
extends BaseLottieAnimator
implements Choreographer.FrameCallback

This is a slightly modified ValueAnimator that allows us to update start and end values easily optimizing for the fact that we know that it's a value animator with 2 floats.

Nested Class Summary

Nested classes/interfaces inherited from class android.animation.ValueAnimator

ValueAnimator.AnimatorUpdateListener

Nested classes/interfaces inherited from class android.animation.Animator

Animator.AnimatorListener, Animator.AnimatorPauseListener

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	running

Fields inherited from class android.animation.ValueAnimator

INFINITE, RESTART, REVERSE

Fields inherited from class android.animation.Animator

DURATION_INFINITE

Constructor Summary

Constructors

Constructor	Description
LottieValueAnimator()

Method Summary

Modifier and Type	Method	Description
void	cancel()
void	clearComposition()
void	doFrame(long frameTimeNanos)
void	endAnimation()
float	getAnimatedFraction()	Returns the current value of the currently playing animation taking into account direction, min and max frames.
Object	getAnimatedValue()	Returns a float representing the current value of the animation from 0 to 1 regardless of the animation speed, direction, or min and max frames.
float	getAnimatedValueAbsolute()	Returns the current value of the animation from 0 to 1 regardless of the animation speed, direction, or min and max frames.
long	getDuration()
float	getFrame()
float	getMaxFrame()
float	getMinFrame()
float	getSpeed()	Returns the current speed.
boolean	isRunning()
void	pauseAnimation()
void	playAnimation()
protected void	postFrameCallback()
protected void	removeFrameCallback()
protected void	removeFrameCallback(boolean stopRunning)
void	resumeAnimation()
void	reverseAnimationSpeed()
void	setComposition(LottieComposition composition)
void	setFrame(float frame)
void	setMaxFrame(float maxFrame)
void	setMinAndMaxFrames(float minFrame, float maxFrame)
void	setMinFrame(int minFrame)
void	setRepeatMode(int value)
void	setSpeed(float speed)

Methods inherited from class com.airbnb.lottie.utils.BaseLottieAnimator

addListener, addUpdateListener, getStartDelay, removeAllListeners, removeAllUpdateListeners, removeListener, removeUpdateListener, setDuration, setInterpolator, setStartDelay

Methods inherited from class android.animation.ValueAnimator

areAnimatorsEnabled, clone, end, getAnimatedValue, getCurrentPlayTime, getFrameDelay, getInterpolator, getRepeatCount, getRepeatMode, getTotalDuration, getValues, isStarted, ofArgb, ofFloat, ofInt, ofObject, ofPropertyValuesHolder, pause, resume, reverse, setCurrentFraction, setCurrentPlayTime, setEvaluator, setFloatValues, setFrameDelay, setIntValues, setObjectValues, setRepeatCount, setValues, start, toString

Methods inherited from class android.animation.Animator

addPauseListener, getListeners, isPaused, removePauseListener, setTarget, setupEndValues, setupStartValues

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

running

protected boolean running

Constructor Detail

LottieValueAnimator

public LottieValueAnimator()

Method Detail

getAnimatedValue

public Object getAnimatedValue()

Returns a float representing the current value of the animation from 0 to 1 regardless of the animation speed, direction, or min and max frames.

Overrides:

getAnimatedValue in class ValueAnimator

getAnimatedValueAbsolute

@FloatRange(from=0.0,
            to=1.0)
public float getAnimatedValueAbsolute()

Returns the current value of the animation from 0 to 1 regardless of the animation speed, direction, or min and max frames.

getAnimatedFraction

@FloatRange(from=0.0,
            to=1.0)
public float getAnimatedFraction()

Returns the current value of the currently playing animation taking into account direction, min and max frames.

Overrides:

getAnimatedFraction in class ValueAnimator

getDuration

public long getDuration()

Overrides:

getDuration in class ValueAnimator

getFrame

public float getFrame()

isRunning

public boolean isRunning()

Overrides:

isRunning in class ValueAnimator

doFrame

public void doFrame(long frameTimeNanos)

Specified by:

doFrame in interface Choreographer.FrameCallback

clearComposition

public void clearComposition()

setComposition

public void setComposition(LottieComposition composition)

setFrame

public void setFrame(float frame)

setMinFrame

public void setMinFrame(int minFrame)

setMaxFrame

public void setMaxFrame(float maxFrame)

setMinAndMaxFrames

public void setMinAndMaxFrames(float minFrame,
                               float maxFrame)

reverseAnimationSpeed

public void reverseAnimationSpeed()

setSpeed

public void setSpeed(float speed)

getSpeed

public float getSpeed()

Returns the current speed. This will be affected by repeat mode REVERSE.

setRepeatMode

public void setRepeatMode(int value)

Overrides:

setRepeatMode in class ValueAnimator

playAnimation

@MainThread
public void playAnimation()

endAnimation

@MainThread
public void endAnimation()

pauseAnimation

@MainThread
public void pauseAnimation()

resumeAnimation

@MainThread
public void resumeAnimation()

cancel

@MainThread
public void cancel()

Overrides:

cancel in class ValueAnimator

getMinFrame

public float getMinFrame()

getMaxFrame

public float getMaxFrame()

postFrameCallback

protected void postFrameCallback()

removeFrameCallback

@MainThread
protected void removeFrameCallback()

removeFrameCallback

@MainThread
protected void removeFrameCallback(boolean stopRunning)