CoreTeamEventActivity.java 文件源码

public static void startAlphaAnimation(View v, long duration, int visibility) {
    AlphaAnimation alphaAnimation = (visibility == View.VISIBLE)
            ? new AlphaAnimation(0f, 1f)
            : new AlphaAnimation(1f, 0f);

    alphaAnimation.setDuration(duration);
    alphaAnimation.setFillAfter(true);
    v.startAnimation(alphaAnimation);
}