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这里我把视图控制器作为我的弹出窗口 ,但按钮(弹出按钮)位于屏幕的底部,所以弹出窗口未达到原始高度(因为屏幕底部空间较少)。我需要它的全部身高。我正在像这样以编程方式显示弹出窗口。在swift 3.0中,弹出窗口的大小并不是确切的大小?
let popoverViewController:TimeViewController = self.storyboard!.instantiateViewController(withIdentifier: "TimePicker_ViewController") as! TimeViewController
popoverViewController.index_val = index
popoverViewController.t_value = t_value
popoverViewController.delegate = self
popoverViewController.modalPresentationStyle = .popover
popoverViewController.preferredContentSize = CGSize.init(width: 250, height: 250)
let popoverPresentationViewController = popoverViewController.popoverPresentationController
popoverPresentationViewController?.permittedArrowDirections = UIPopoverArrowDirection.up
popoverPresentationViewController?.sourceView = button
popoverPresentationViewController?.sourceRect = button.bounds
present(popoverViewController, animated: true, completion: nil)
尝试将箭头方向设置为向下,以便弹出窗口位于按钮上方? – Sweeper
是的。 @sweeper它工作!通过添加此行popoverPresentationViewController?.permittedArrowDirections = UIPopoverArrowDirection.down –