com.airbnb.lottie.utils

Class LottieValueAnimator

java.lang.Object

android.animation.Animator

android.animation.ValueAnimator

com.airbnb.lottie.utils.LottieValueAnimator

All Implemented Interfaces:

java.lang.Cloneable

public class LottieValueAnimator
extends android.animation.ValueAnimator

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

android.animation.ValueAnimator.AnimatorUpdateListener

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

android.animation.Animator.AnimatorListener, android.animation.Animator.AnimatorPauseListener

Field Summary

Fields inherited from class android.animation.ValueAnimator

INFINITE, RESTART, REVERSE

Fields inherited from class android.animation.Animator

DURATION_INFINITE

Constructor Summary

Constructors

Constructor and Description
LottieValueAnimator()

Method Summary

Modifier and Type	Method and Description
void	forceUpdate() Forces the animation to update even if the progress hasn't changed.
float	getMaxProgress()
float	getMinProgress()
float	getProgress()
void	resumeAnimation()
android.animation.ValueAnimator	setDuration(long duration)
void	setIsReversed(boolean isReversed)
void	setMaxProgress(float maxProgress)
void	setMinProgress(float minProgress)
void	setProgress(float progress) This progress is from 0 to 1 and doesn't take into account setMinProgress or setMaxProgress.
void	start()
void	systemAnimationsAreDisabled()
void	updateValues(float startProgress, float endProgress) This lets you set the start and end progress for a single play of the animator.

Methods inherited from class android.animation.ValueAnimator

addUpdateListener, areAnimatorsEnabled, cancel, clone, end, getAnimatedFraction, getAnimatedValue, getAnimatedValue, getCurrentPlayTime, getDuration, getFrameDelay, getInterpolator, getRepeatCount, getRepeatMode, getStartDelay, getTotalDuration, getValues, isRunning, isStarted, ofArgb, ofFloat, ofInt, ofObject, ofPropertyValuesHolder, pause, removeAllUpdateListeners, removeUpdateListener, resume, reverse, setCurrentFraction, setCurrentPlayTime, setEvaluator, setFloatValues, setFrameDelay, setInterpolator, setIntValues, setObjectValues, setRepeatCount, setRepeatMode, setStartDelay, setValues, toString

Methods inherited from class android.animation.Animator

addListener, addPauseListener, getListeners, isPaused, removeAllListeners, removeListener, removePauseListener, setTarget, setupEndValues, setupStartValues

Methods inherited from class java.lang.Object

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

Constructor Detail

LottieValueAnimator

public LottieValueAnimator()

Method Detail

start

public void start()

Overrides:

start in class android.animation.ValueAnimator

systemAnimationsAreDisabled

public void systemAnimationsAreDisabled()

setDuration

public android.animation.ValueAnimator setDuration(long duration)

Overrides:

setDuration in class android.animation.ValueAnimator

setProgress

public void setProgress(float progress)

This progress is from 0 to 1 and doesn't take into account setMinProgress or setMaxProgress. In other words, if you have set the min and max progress to 0.2 and 0.4, setting this to 0.5f will set the progress to 0.5, not 0.3. However, the value will be clamped between 0.2 and 0.4 so the resulting progress would be 0.4.

forceUpdate

public void forceUpdate()

Forces the animation to update even if the progress hasn't changed.

getProgress

public float getProgress()

setIsReversed

public void setIsReversed(boolean isReversed)

setMinProgress

public void setMinProgress(float minProgress)

setMaxProgress

public void setMaxProgress(float maxProgress)

getMinProgress

public float getMinProgress()

getMaxProgress

public float getMaxProgress()

resumeAnimation

public void resumeAnimation()

updateValues

public void updateValues(float startProgress,
                         float endProgress)

This lets you set the start and end progress for a single play of the animator. After the next time the animation ends or is cancelled, the values will be reset to those set by setMinProgress(float) or setMaxProgress(float).