Ios 快速爆裂锚

我试图在图像上显示一个弹出框，但尝试将锚点指向图像边框失败（图像是信息图标）。 这是我的密码：

按钮操作：

@IBAction func infoTapped(_ sender: AnyObject) {
        self.performSegue(withIdentifier: "InfoPopOver", sender: nil)
    }

extension AddExpenseViewController: UIPopoverPresentationControllerDelegate {
    func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {
        return UIModalPresentationStyle.none
    }
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "InfoPopOver" {
            if let vctr = segue.destination as? MyPopOverViewController {
                vctr.modalPresentationStyle = .popover
                vctr.popoverPresentationController?.delegate = self
                vctr.popoverPresentationController?.sourceView = self.view
                vctr.popoverPresentationController?.sourceRect = infoIcon.frame

            }
        }
    }

}

class MyPopOverViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        self.preferredContentSize = CGSize(width: 185, height: 80)

    }
}

和准备阶段：

@IBAction func infoTapped(_ sender: AnyObject) {
        self.performSegue(withIdentifier: "InfoPopOver", sender: nil)
    }

extension AddExpenseViewController: UIPopoverPresentationControllerDelegate {
    func adaptivePresentationStyle(for controller: UIPresentationController) -> UIModalPresentationStyle {
        return UIModalPresentationStyle.none
    }
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "InfoPopOver" {
            if let vctr = segue.destination as? MyPopOverViewController {
                vctr.modalPresentationStyle = .popover
                vctr.popoverPresentationController?.delegate = self
                vctr.popoverPresentationController?.sourceView = self.view
                vctr.popoverPresentationController?.sourceRect = infoIcon.frame

            }
        }
    }

}

class MyPopOverViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        self.preferredContentSize = CGSize(width: 185, height: 80)

    }
}

下面是几个屏幕截图：

---

我得到的最好结果是手动设置坐标，但它不适合每种屏幕类型…

我将其更改为：

vctr.popoverPresentationController?.sourceView = infoIcon.superview
vctr.popoverPresentationController?.sourceRect = infoIcon.frame

---

通过这种方式，您可以确保您使用的是信息图标的superview，并且框架将位于正确的位置。

尝试将

sourceView

设置为

infoIcon

？效果非常好！谢谢！