采用去氧孕烯炔雌醇片短效避孕的话,应该是从月经开始的第一天就服用去氧孕烯炔雌醇片,然后根据包装上面的箭头,在每天固定的一个时间里面进行服用,连续服用21天,然后停药7天,直到把一盒去氧孕烯炔雌醇片吃完,就
I\'m trying to use a list view, and when I add an item to the ArrayList of its ListAdapter and call notifyDataSetChanged, it throws an exception.Calling the addItem routine below will throw an excepti