不要在 iOS 中的对话框区域外使用点击手势关闭 uialertcontroller 表

Question

在我的 iOSswift 3.0应用程序中，我UIAlertController在当前的 ViewController 上显示了工作表实例。但是，当我在工作表的某个区域（变暗的半透明背景）之外点击时，我不想关闭该工作表，因为我已经必须取消一个操作。任何的想法？

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 类型为警报

您可以下载示例项目

将手势识别器添加到 alertController 超级视图以处理用户交互

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

在那个动作上什么都不做

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 类型为 actionSheet

您可以下载示例项目

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))

    })