获取UIBarButtonItem的宽度

Question

我想要得到一个宽度UIBarButtonItem.

这不起作用:

barbuttonitem.customView.frame.size.width

这也行不通:

barbuttonitem.width

Answer 1

那这个呢:

UIBarButtonItem *item = /*...*/;
UIView *view = [item valueForKey:@"view"];
CGFloat width = view? [view frame].size.width : (CGFloat)0.0;