在iphone ios上的swift 3中弹出 [英] Popover in swift 3 on iphone ios

问题描述

我正在尝试使用以下代码制作一个弹出式菜单：

I am trying to make a popover menu with the following code:

import UIKit

class BeobachtungViewController: UIViewController, UIPopoverPresentationControllerDelegate {


    @IBAction func addClicked(_ sender: AnyObject) {
        // get a reference to the view controller for the popover
        let popController = UIStoryboard(name: "Personenakte", bundle: nil).instantiateViewController(withIdentifier: "popoverId")

        // set the presentation style
        popController.modalPresentationStyle = UIModalPresentationStyle.popover

        // set up the popover presentation controller
        popController.popoverPresentationController?.permittedArrowDirections = UIPopoverArrowDirection.up
        popController.popoverPresentationController?.delegate = self
        popController.popoverPresentationController?.sourceView = sender as! UIView // button
        popController.popoverPresentationController?.sourceRect = sender.bounds

        // present the popover
        self.present(popController, animated: true, completion: nil)
    }

    // UIPopoverPresentationControllerDelegate method
    func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
        // Force popover style
        return UIModalPresentationStyle.none
    }
}

这适用于iPad，但在iPhone上，弹出窗口占据整个iPhone屏幕。我只想要一个带箭头的小窗户。我找到了几个教程，但没有一个对我有用。

This is working on iPad, but, on an iPhone, the popup takes the whole iPhone screen. I just want a small window with an arrow. I found several tutorials but none worked for me.

推荐答案

将你的委托方法改为：

func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle {
    // return UIModalPresentationStyle.FullScreen
    return UIModalPresentationStyle.none
}

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