从UIBarButtonItem中检索UISegmentedControl对象

Question

我需要像这样UISegmentedControl以前获得我先前添加的对象UIBarButtonItem

UIBarButtonItem *segmentBarButton=[[UIBarButtonItem alloc] initWithCustomView:segmaentControl];

现在我想从中取出UISegmentedControl物体，我该怎么做？

Answer 1

UIBarButtonItem有一个名为的属性customView，这是您要查找的内容：

UISegmentedControl *control = (UISegmentedControl *) [segmentBarButton customView];