Create Animations for Android AnimatorSet
I have the following AnimatorSet method:
private AnimatorSet dialCenterThrob() {
int bpm = workoutStream.getHeartRate();
dialCenterImageView.clearAnimation();
AnimatorSet finalSet = new AnimatorSet();
ObjectAnimator pulseX = ObjectAnimator.ofFloat(dialCenterImageView, View.SCALE_X, 0.98f, 1.06f);
ObjectAnimator pulseY = ObjectAnimator.ofFloat(dialCenterImageView, View.SCALE_Y, 0.98f, 1.06f);
pulseX.setRepeatMode(ObjectAnimator.REVERSE);
pulseX.setRepeatCount(ObjectAnimator.INFINITE);
pulseY.setRepeatMode(ObjectAnimator.REVERSE);
pulseY.setRepeatCount(ObjectAnimator.INFINITE);
pulseX.setDuration(bpm);
pulseY.setDuration(bpm);
pulseX.setInterpolator(new AccelerateInterpolator());
pulseY.setInterpolator(new AccelerateInterpolator());
finalSet.playTogether(pulseX, pulseY);
return finalSet;
}
This is set in a var called throbber and is sometimes updated with this method:
private void updateThrobbing() {
if (hasThrob()) {
throbber = dialCenterThrob();
throbber.start();
} else {
if (throbber != null && throbber.isRunning()) {
stopThrobbing();
}
}
}
But I can't get it to stop animating, and here is the method currently trying to do it:
public void stopThrobbing() {
List<Animator> throbbers = throbber.getChildAnimations();
for(Animator animator : throbbers) {
//accomplishes nothing
((ObjectAnimator)animator).setRepeatCount(0);
((ObjectAnimator)animator).setRepeatMode(0);
}
throbber.pause(); //nothing
throbber.cancel(); //and again, nothing
throbber.end();//shocking, I know, but really, nothing
throbber = null;//you'd think this would definitely do it, but no
//desparate attempt, in vein, of course
dialCenterImageView.clearAnimation();
}
I can't get it to stop animating. Update: I just tried to keep the local ref for separate object animators and then called setRepeatCount, mode, pause, end, cancel on each one and still nothing.
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dialCenterImageView.clearAnimation ();
When the animation is created ObjectAnimator
, this will not affect . You can only clear the animation you started in the viewstartAnimation()
findViewById(R.id.yourViewId).startAnimation(yourAnimation);
findViewById(R.id.yourViewId).clearAnimation();
any animator object, or animatorset with repeatCount set to Infinite, will not pause no matter what you do without leaving the view.
It is true that! I learned this the hard way today. So add my two cents. You need to keep the link of the instance ObjectAnimator
and then call cancel()
on it.
I ran into this where the animation was still continuing after the screen rotation of your android phone, in which case your activity was essentially created with a new layout.
So this is what I did
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
ObjectAnimator buttonOneObjectAnimator = myOnClickListener.getButtonOneColorAnim();
if(buttonOneObjectAnimator != null)
buttonOneObjectAnimator.cancel();
}
You can do this very well in onPause()
.
Another important point. If you call start()
on your ObjectAnimator
instance n times , you will need to call cancel()
n times to completely stop the animation.
Also, if you added listeners AnimatorSet
, make sure you remove the listeners before calling cancellation.
yourAnimatorSet.removeAllListeners();
yourAnimatorSet.end();
yourAnimatorSet.cancel();
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Late posted here, but what I did, not thanks to google's habit of leaving things half-baked, was to pass an ObjectAnimator View instance to its tag, which must be known to be able to stop it.
An example of starting / canceling an infinite rotation in a view ...
private void rotateStart(View view) {
ObjectAnimator animator = ObjectAnimator.ofFloat(view, "rotation", 0f, 360f);
// set animator instance as view tag
view.setTag(animator);
animator.setDuration(800);
animator.setRepeatMode(ObjectAnimator.RESTART);
animator.setRepeatCount(ObjectAnimator.INFINITE);
animator.start();
}
private void rotateCancel(View view) {
// get view tag, which is its animator instance
ObjectAnimator animator = (ObjectAnimator) view.getTag();
if (animator != null) {
animator.cancel();
}
}
I would guess it would make the job, whether it was a standalone animation or a set.
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