AnimationHelper.java 文件源码

/**
 * Start Loop animation on given list of characters
 */
public long applyLoopAnimation(List<TextView> targetList) {
    long duration = (long) (CHARACTER_ANIM_DURATION * 5f);
    for (final TextView target : targetList) {
        AnimationSet set = new AnimationSet(true);
        if (headerLoopAnim == HeaderLoopAnim.ZOOM) {
            addLoopScaleAnimations(duration, set);
        } else if (headerLoopAnim == HeaderLoopAnim.FADE) {
            addLoopFadeAnimations(duration, set);
        }
        target.startAnimation(set);
    }

    // loop anim iteration
    currentLoopIteration = (currentLoopIteration + 1) % headerLoopAnimIteration;
    return (long) ((duration * 2.1f) + 300);
}