iOS 를 매우매우 좋아하는 개발자의 노트 iOS 를 매우매우 좋아하는 개발자의 노트

There are a couple of reasons you would use this method over the Boolean variable. First, none of the views discussed in this chapter can be used more than once for a view. If you try to attach two alert views, for example, only the last one will work. You can attach an alert, modal, or action sheet to sibling views in a view hierarchy, but you can’t attach more than one to the same view (or to ..