问题
I am using this code and its placing my view at the top of the viewing area instead of the bottom. Any idea what I am doing wrong? I am not creating the view in swift because I already have it created in IB with a toolbar and pickerview inside it.
let height = view.frame.size.height
yearView.frame = CGRect(x: 0, y: height - 250, width: self.view.frame.width, height: 250)
Even if I use the y coordinate and say 50 the view wont budge from the top. All I am trying to do is place this subview at the bottom of any sized phone's screen so they can select a value inside the view.
回答1:
yearView.frame = CGRect(x: 0, y: height - 250, width: self.view.frame.width, height: 250)
Try moving it out of the ViewDidLoad, you need to position that view whenever you unhide it, otherwise it will not show.
来源：https://stackoverflow.com/questions/30805669/how-to-make-a-view-with-picker-and-toolbar-stay-at-the-bottom-of-iphone-screen