ItemsCountView.java 文件源码

private Animation createPositionAnimation(int fromY, int toY, float fromAlpha, float toAlpha, int duration) {
    TranslateAnimation translate = new TranslateAnimation(0, 0, fromY, toY);
    translate.setDuration(duration);

    AlphaAnimation alpha = new AlphaAnimation(fromAlpha, toAlpha);
    alpha.setDuration(duration);

    AnimationSet set = new AnimationSet(true);
    set.setInterpolator(new DecelerateInterpolator());
    set.addAnimation(translate);
    set.addAnimation(alpha);
    return set;
}