public ObjectAnimator getDisappearAnimator() {
if (!this.mIsInitialized || !this.mDrawValuesReady) {
Log.e(TAG, "RadialSelectorView was not ready for animation.");
return null;
}
Keyframe kf0, kf1, kf2;
float midwayPoint = 0.2f;
int duration = 500;
kf0 = Keyframe.ofFloat(0f, 1);
kf1 = Keyframe.ofFloat(midwayPoint, this.mTransitionMidRadiusMultiplier);
kf2 = Keyframe.ofFloat(1f, this.mTransitionEndRadiusMultiplier);
PropertyValuesHolder radiusDisappear =
PropertyValuesHolder.ofKeyframe("animationRadiusMultiplier", kf0, kf1, kf2);
kf0 = Keyframe.ofFloat(0f, 1f);
kf1 = Keyframe.ofFloat(1f, 0f);
PropertyValuesHolder fadeOut = PropertyValuesHolder.ofKeyframe("alpha", kf0, kf1);
ObjectAnimator disappearAnimator =
ObjectAnimator.ofPropertyValuesHolder(this, radiusDisappear, fadeOut).setDuration(duration);
disappearAnimator.addUpdateListener(this.mInvalidateUpdateListener);
return disappearAnimator;
}
public static ObjectAnimator getPulseAnimator(
View labelToAnimate, float decreaseRatio, float increaseRatio) {
Keyframe k0 = Keyframe.ofFloat(0f, 1f);
Keyframe k1 = Keyframe.ofFloat(0.275f, decreaseRatio);
Keyframe k2 = Keyframe.ofFloat(0.69f, increaseRatio);
Keyframe k3 = Keyframe.ofFloat(1f, 1f);
PropertyValuesHolder scaleX = PropertyValuesHolder.ofKeyframe("scaleX", k0, k1, k2, k3);
PropertyValuesHolder scaleY = PropertyValuesHolder.ofKeyframe("scaleY", k0, k1, k2, k3);
ObjectAnimator pulseAnimator =
ObjectAnimator.ofPropertyValuesHolder(labelToAnimate, scaleX, scaleY);
pulseAnimator.setDuration(PULSE_ANIMATOR_DURATION);
return pulseAnimator;
}
public ObjectAnimator getReappearAnimator() {
if (!this.mIsInitialized || !this.mDrawValuesReady) {
Log.e(TAG, "RadialSelectorView was not ready for animation.");
return null;
}
Keyframe kf0, kf1, kf2, kf3;
float midwayPoint = 0.2f;
int duration = 500;
// The time points are half of what they would normally be, because this animation is
// staggered against the disappear so they happen seamlessly. The reappear starts
// halfway into the disappear.
float delayMultiplier = 0.25f;
float transitionDurationMultiplier = 1f;
float totalDurationMultiplier = transitionDurationMultiplier + delayMultiplier;
int totalDuration = (int) (duration * totalDurationMultiplier);
float delayPoint = delayMultiplier * duration / totalDuration;
midwayPoint = 1 - midwayPoint * (1 - delayPoint);
kf0 = Keyframe.ofFloat(0f, this.mTransitionEndRadiusMultiplier);
kf1 = Keyframe.ofFloat(delayPoint, this.mTransitionEndRadiusMultiplier);
kf2 = Keyframe.ofFloat(midwayPoint, this.mTransitionMidRadiusMultiplier);
kf3 = Keyframe.ofFloat(1f, 1);
PropertyValuesHolder radiusReappear =
PropertyValuesHolder.ofKeyframe("animationRadiusMultiplier", kf0, kf1, kf2, kf3);
kf0 = Keyframe.ofFloat(0f, 0f);
kf1 = Keyframe.ofFloat(delayPoint, 0f);
kf2 = Keyframe.ofFloat(1f, 1f);
PropertyValuesHolder fadeIn = PropertyValuesHolder.ofKeyframe("alpha", kf0, kf1, kf2);
ObjectAnimator reappearAnimator =
ObjectAnimator.ofPropertyValuesHolder(this, radiusReappear, fadeIn)
.setDuration(totalDuration);
reappearAnimator.addUpdateListener(this.mInvalidateUpdateListener);
return reappearAnimator;
}
/** Render the animations for appearing and disappearing. */
private void renderAnimations() {
Keyframe kf0, kf1, kf2, kf3;
float midwayPoint = 0.2f;
int duration = 500;
// Set up animator for disappearing.
kf0 = Keyframe.ofFloat(0f, 1);
kf1 = Keyframe.ofFloat(midwayPoint, mTransitionMidRadiusMultiplier);
kf2 = Keyframe.ofFloat(1f, mTransitionEndRadiusMultiplier);
PropertyValuesHolder radiusDisappear =
PropertyValuesHolder.ofKeyframe("animationRadiusMultiplier", kf0, kf1, kf2);
kf0 = Keyframe.ofFloat(0f, 1f);
kf1 = Keyframe.ofFloat(1f, 0f);
PropertyValuesHolder fadeOut = PropertyValuesHolder.ofKeyframe("alpha", kf0, kf1);
mDisappearAnimator =
ObjectAnimator.ofPropertyValuesHolder(
AnimatorProxy.NEEDS_PROXY ? AnimatorProxy.wrap(this) : this,
radiusDisappear,
fadeOut)
.setDuration(duration);
mDisappearAnimator.addUpdateListener(mInvalidateUpdateListener);
// Set up animator for reappearing.
float delayMultiplier = 0.25f;
float transitionDurationMultiplier = 1f;
float totalDurationMultiplier = transitionDurationMultiplier + delayMultiplier;
int totalDuration = (int) (duration * totalDurationMultiplier);
float delayPoint = (delayMultiplier * duration) / totalDuration;
midwayPoint = 1 - (midwayPoint * (1 - delayPoint));
kf0 = Keyframe.ofFloat(0f, mTransitionEndRadiusMultiplier);
kf1 = Keyframe.ofFloat(delayPoint, mTransitionEndRadiusMultiplier);
kf2 = Keyframe.ofFloat(midwayPoint, mTransitionMidRadiusMultiplier);
kf3 = Keyframe.ofFloat(1f, 1);
PropertyValuesHolder radiusReappear =
PropertyValuesHolder.ofKeyframe("animationRadiusMultiplier", kf0, kf1, kf2, kf3);
kf0 = Keyframe.ofFloat(0f, 0f);
kf1 = Keyframe.ofFloat(delayPoint, 0f);
kf2 = Keyframe.ofFloat(1f, 1f);
PropertyValuesHolder fadeIn = PropertyValuesHolder.ofKeyframe("alpha", kf0, kf1, kf2);
mReappearAnimator =
ObjectAnimator.ofPropertyValuesHolder(
AnimatorProxy.NEEDS_PROXY ? AnimatorProxy.wrap(this) : this, radiusReappear, fadeIn)
.setDuration(totalDuration);
mReappearAnimator.addUpdateListener(mInvalidateUpdateListener);
}