根据id名称获取id

// 获取从adbox_1到adbox_64的图片
        private int getPicId() {

            int randomNum = new Random().nextInt(64) + 1;
            int notFoundResId = getResources().getIdentifier("adbox_" + randomNum, "mipmap", getContext().getPackageName());
            return notFoundResId;

        }