popover不显示在iPhone上 [英] popover doesn't display on iphone

问题描述

我遵循了这个 iPhone上的UIPopoverPresentationController不会产生弹出窗口，但不会不会在iPhone上产生弹出式窗口. 这是viewcontroller的代码

I followed this UIPopoverPresentationController on iPhone doesn't produce popover but doesn't produce popover on iphone. Here is the code of viewcontroller

class ViewController:UIViewController,UIPopoverPresentationControllerDelegate{

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

        if segue.identifier == "second"{

            let secondVC = segue.destination
            let controller : UIPopoverPresentationController = secondVC.popoverPresentationController!
            controller.delegate = self
        }
    }

    /* Popover delegate method */
    func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
        return UIModalPresentationStyle.none
    }
}

我无法在iPhone中使用present作为弹出窗口显示新的viewcontroller. (ios 10/xcode8)

I am not able to show new viewcontroller using present as popover in iphone. (ios 10/xcode8)

在单击按钮后，secondViewController应该在该按钮上弹出.

推荐答案

使用此委托方法后，它将在iPhone上产生弹出式窗口.

After using this delegate method it is producing popover on iphone.

func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle {

    return UIModalPresentationStyle.none
}

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