How can I repeat a property animation?

I'm doing an animation of bubbles on the screen, but the bubbles stop after finishing the animation time. How do I repeat the animation or make it infinite?

bub.animate();
bub.animate().x(x2).y(y2);
bub.animate().setDuration(animationTime);
bub.animate().setListener(new AnimatorListenerAdapter() {

@Override
public void onAnimationStart(Animator animation) {
animators.add(animation);
}

@Override
public void onAnimationRepeat(Animator animation) {
}

@Override
public void onAnimationEnd(Animator animation) {
}
});


ValueAnimator

4 Answers
4

Since ViewPropertyAnimator is only good for simple animations, use more advanced ObjectAnimator class - basically method setRepeatCount and additionally setRepeatMode.

ViewPropertyAnimator

ObjectAnimator

ViewPropertyAnimator

ObjectAnimator

This is actually possible. Here's an example of rotating a view:

final ViewPropertyAnimator animator = view.animate().rotation(360).setInterpolator(new LinearInterpolator()).setDuration(1000);

animator.setListener(new android.animation.Animator.AnimatorListener() {
...

@Override
public void onAnimationEnd(final android.animation.Animator animation) {
animation.setListener(null);
view.setRotation(0);
view.animate().rotation(360).setInterpolator(new LinearInterpolator()).setDuration(1000).setListener(this).start();
}

});


You can also use "withEndAction" instead of a listener.

You can use CycleInterpolator. For example, like this:

CycleInterpolator

int durationMs = 60000;
int cycleDurationMs = 1000;
view.setAlpha(0f);
view.animate().alpha(1f)
.setInterpolator(new CycleInterpolator(durationMs / cycleDurationMs))
.setDuration(durationMs)
.start();


final ViewPropertyAnimator animator = view.animate().rotation(360).setInterpolator(new LinearInterpolator()).setDuration(1000); //Animator object

animator.setListener(new android.animation.Animator.AnimatorListener() {
...

@Override
public void onAnimationEnd(final android.animation.Animator animation) {
animation.setListener(this); //It listens for animation's ending and we are passing this to start onAniationEnd method when animation ends, So it works in loop
view.setRotation(0);
view.animate().rotation(360).setInterpolator(new LinearInterpolator()).setDuration(1000).setListener(this).start();
}

});


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