ios - 不要在 iOS 的对话框区域外用点击手势关闭 uialertcontroller 表

Question

在我的 iOS swift 3.0 应用程序中，我在当前的 ViewController 上显示了 UIAlertController 工作表实例。但是我不想在我点击工作表区域外部(变暗的半透明背景)时关闭该工作表，因为我已经必须取消操作。有什么想法吗？

我有带有更多按钮的 MGSwipeTableViewCell。当用户单击“更多”按钮时，将执行以下代码。

func onClickMore(for vmCell: VmCell) {
    let sheet = UIAlertController(title: vmCell.vmItem?.vmNameWithoutIp, message: vmCell.vmItem?.ipAddress, preferredStyle: .actionSheet)

    sheet.addAction(UIAlertAction(title: "Create Ticket", style: .default) { (action: UIAlertAction) in

    })

    sheet.addAction(UIAlertAction(title: "Start VM", style: .default) { (action: UIAlertAction) in

    })

    sheet.addAction(UIAlertAction(title: "Restart VM", style: .default) { (action: UIAlertAction) in

    })

    sheet.addAction(UIAlertAction(title: "Stop VM", style: .destructive) { (action: UIAlertAction) in

    })

    sheet.addAction(UIAlertAction(title: "Cancel", style: .cancel) { (action: UIAlertAction) in

    })

    present(sheet, animated: true) { 
        sheet.view.superview?.addGestureRecognizer(UITapGestureRecognizer(target: self, action: nil))
    }
}

Answer 1

对于 UIAlertController Type as alert

您可以下载 sample project

将手势识别器添加到 alertController superview 以处理用户交互

self.present(alertController, animated: true, completion: {() -> Void in
 alertController.view.superview?.addGestureRecognizer(UITapGestureRecognizer(target: self, action: nil)
})

在那个 Action 上什么都不做

更新

let alertController = UIAlertController(title: "Do something", message: "With this", preferredStyle: .alert)
    alertController.addAction(UIAlertAction(title: "Done", style: .default) { action in
        // perhaps use action.title here
    })

    self.present(alertController, animated: true, completion: {() -> Void in


        alertController.view.superview?.addGestureRecognizer(UITapGestureRecognizer(target: self, action: nil))
    })

对于 UIAlertController Type as actionSheet

您可以下载 sample project

你可以通过两种方式做到这一点

选项 1

 alert.view.superview.subviews[0] isUserInteractionEnabled = false

选项 2

   alert.view.superview?.subviews[0].addGestureRecognizer(UITapGestureRecognizer(target: self, action: nil))

例如

   self.present(sheet, animated: true, completion: {() -> Void in
    //    sheet.view.superview?.subviews[0].isUserInteractionEnabled = false;
      sheet.view.superview?.subviews[0].addGestureRecognizer(UITapGestureRecognizer(target: self, action: nil))

    })

完整代码

  let sheet = UIAlertController(title: "karthik", message: "check with", preferredStyle: .actionSheet)

    sheet.addAction(UIAlertAction(title: "Create Ticket", style: .default) { (action: UIAlertAction) in

    })

    sheet.addAction(UIAlertAction(title: "Start VM", style: .default) { (action: UIAlertAction) in

    })

    sheet.addAction(UIAlertAction(title: "Restart VM", style: .default) { (action: UIAlertAction) in

    })

    sheet.addAction(UIAlertAction(title: "Stop VM", style: .destructive) { (action: UIAlertAction) in

    })

    sheet.addAction(UIAlertAction(title: "Cancel", style: .cancel) { (action: UIAlertAction) in

    })



    self.present(sheet, animated: true, completion: {() -> Void in
    //    sheet.view.superview?.subviews[0].isUserInteractionEnabled = false;
      sheet.view.superview?.subviews[0].addGestureRecognizer(UITapGestureRecognizer(target: self, action: nil))

    })