@Override
    public void reset() {
        super.reset();
        if (mCheckmarkScaleAnimator == null) {
            // Call from super's constructor. Not yet initialized.
            return;
        }
        mCheckmarkScaleAnimator.cancel();
        mCheckmarkAlphaAnimator.cancel();
        boolean side = getSideFlippingTowards();
        mCheckMarkDrawable.setScaleAnimatorValue(side ? CHECKMARK_SCALE_BEGIN_VALUE : END_VALUE);
        mCheckMarkDrawable.setAlphaAnimatorValue(side ? CHECKMARK_ALPHA_BEGIN_VALUE : END_VALUE);
    }
Must be <= 1f since the animation value is used as a percentage.
android/modules/module_common/src/main/java/github/tornaco/android/thanos/widget/checkable/CheckableFlipDrawable.java