swift - accessibilityPerformEscape 不会关闭 UIAlertController

Question

我正在尝试显示 UIAlertContoller 并在 VoiceOver 用户执行滑动手势时关闭它:

override func accessibilityPerformMagicTap() -> Bool {
        showPopup()
        return true
    }

    override func accessibilityPerformEscape() -> Bool {
        print("close")
        return true
    }

    func showPopup(){
        baseAlert = UIAlertController(title: "Popup", message: "Choose an option", preferredStyle: .Alert)
        let firstAction = UIAlertAction(title: "method 1", style: .Default) { (alert: UIAlertAction!) -> Void in
            print("one")
        }

        let secondAction = UIAlertAction(title: "method 2", style: .Default) { (alert: UIAlertAction!) -> Void in
            print("two")
        }

        let thirdAction = UIAlertAction(title: "method 3", style: .Default) { (alert: UIAlertAction!) -> Void in
            print("three")
        }

        let closeAction = UIAlertAction(title: "Close", style: .Destructive) { (alert: UIAlertAction!) -> Void in
            print("close")
            self.accessibilityPerformEscape()
        }

        baseAlert.addAction(firstAction)
        baseAlert.addAction(secondAction)
        baseAlert.addAction(thirdAction)
            baseAlert.addAction(closeAction)

        baseAlert.accessibilityHint = "Pop menu"
        presentViewController(baseAlert, animated: true, completion:
            {
                    self.textField.becomeFirstResponder()
            }
        )


    }

上面的代码显示了 UIAlertController 并且当我执行滑动手势时它不会对其使用react，但是当警报未显示或解除时退出手势有效。

Answer 1

您需要在 accessibilityPerformEscape() 中添加关闭 UIAlertController 的代码，返回 true 是不够的。