是否可以在同一个视图控制器中有两个或更多独特的警报？我的目标是iOS 7.1,因此使用以下不推荐使用的UIAlertView方法：

let errorAlert: UIAlertView = UIAlertView()
errorAlert.delegate = self
errorAlert.message = "Are you sure?"
errorAlert.addButtonWithTitle("Yes")
errorAlert.addButtonWithTitle("No")
errorAlert.show()

此警报转到一个函数,该函数在switch语句中包含一些逻辑.

func alertView(View: UIAlertView!,clickedButtonAtIndex buttonIndex: Int) { ...

到目前为止一切都还可以,但是当我在同一个视图控制器中创建第二个警报时,它也会进入相同的功能.例如,如果我无法与数据库建立连接,我将显示不同的错误消息,但这也会转到上面的alertView函数并运行相同的switch语句.

我正在做一个明显的错误吗？

提前致谢.

func alertView(view: UIAlertView!,clickedButtonAtIndex buttonIndex: Int) {
    if view == errorAlert {
        // do your stuff..
    } else if view == anotherAlertView {
        // do your stuff for the second AlertView
    }
}

这是典型的UIAlertView的样子：

这就是我想要的样子：

这是我目前正在制作我的自定义ConfirmationViewController弹出窗口的方法：

let confirmationViewController = ConfirmationViewController()
confirmationViewController.delegate = self
confirmationViewController.setTitleLabel("Are you sure you want to remove \(firstName)?")
confirmationViewController.modalPresentationStyle = UIModalPresentationStyle.Popover
confirmationViewController.preferredContentSize = CGSizeMake(230,130)

let popoverConfirmationViewController = confirmationViewController.popoverPresentationController
popoverConfirmationViewController?.permittedArrowDirections = UIPopoverArrowDirection(rawValue: 0)
popoverConfirmationViewController?.delegate = self
popoverConfirmationViewController?.sourceView = self.view
popoverConfirmationViewController?.sourceRect = CGRectMake(CGRectGetMidX(self.view.bounds),CGRectGetMidY(self.view.bounds),0)
presentViewController(
    confirmationViewController,animated: true,completion: nil)

这是我按下CANCEL或REMOVE按钮时收到通知的方式：

extension UserProfileTableViewController: ConfirmationViewControllerDelegate {
    func cancelButtonpressed() {
        print("Cancel button pressed")
    }

    func confirmationButtonpressed(objectToDelete: AnyObject?) {
        print("Delete button pressed")
    }
}

但是,我喜欢使用UIAlertView是因为我可以在按下特定按钮时执行我想要执行的操作的硬编码,如下所示：

let alertController = UIAlertController(title: nil,message: nil,preferredStyle: .Alert)

let cancelAction = UIAlertAction(title: "Cancel",style: .Default,handler: {(ACTION) in
    print("Perform cancel action")
})

let deleteAction = UIAlertAction(title: "Remove",style: .Destructive,handler: {(ACTION) in
    print("Perform delete action")
})

alertController.addAction(cancelAction)
alertController.addAction(deleteAction)

presentViewController(alertController,completion: nil)

所以我的问题是,如何以这样的方式创建一个完成处理程序(内联),当我使用我的自定义ConfirmationViewController按下CANCEL或REMOVE按钮时,我可以触发动作,就像我已经展示了如何使用UIAlertController一样而不是目前的方式,我正在与代表团这样做？

答案是使用UIAlertController创建我正在寻找的自定义弹出窗口吗？如果是这样,我怎样才能将其定制到我正在寻找的程度？

在此先感谢并为长篇帖子抱歉:)

附：这是我的ConfirmationViewController和ConfirmationViewControllerDelegate的样子：

protocol ConfirmationViewControllerDelegate {
    func cancelButtonpressed()
    func confirmationButtonpressed(objectToDelete: AnyObject?)
}

class ConfirmationViewController: UIViewController {
    var didSetupConstraints = false

    let titleLabel = UILabel.newAutoLayoutView()
    let buttonContainer = UIView.newAutoLayoutView()
    let cancelButton = ButtonWithPressingEffect.newAutoLayoutView()
    let confirmationButton = ButtonWithPressingEffect.newAutoLayoutView()

    var delegate: ConfirmationViewControllerDelegate?

    var objectToDelete: AnyObject?

    override func viewDidLoad() {
        super.viewDidLoad()

        view.backgroundColor = UIColor.whiteColor()

        titleLabel.numberOfLines = 0

        cancelButton.backgroundColor = UIColor.colorFromCode(0x7f7f7f)
        cancelButton.layer.cornerRadius = 5
        cancelButton.setAttributedTitle(NSMutableAttributedString(
            string: "CANCEL",attributes: [
                NSFontAttributeName: UIFont(name: "AvenirNextLTPro-Demi",size: 12)!,NSForegroundColorAttributeName: UIColor.whiteColor(),NSKernAttributeName: 0.2
            ]
        ),forState: UIControlState.normal)
        cancelButton.addTarget(self,action: #selector(cancelButtonpressed),forControlEvents: .TouchUpInside)

        confirmationButton.backgroundColor = Application.redColor
        confirmationButton.layer.cornerRadius = 5
        confirmationButton.setAttributedTitle(NSMutableAttributedString(
            string: "REMOVE",forState: UIControlState.normal)
        confirmationButton.addTarget(self,action: #selector(confirmationButtonPresssed),forControlEvents: .TouchUpInside)

        view.addSubview(titleLabel)
        view.addSubview(buttonContainer)
        buttonContainer.addSubview(cancelButton)
        buttonContainer.addSubview(confirmationButton)
        updateViewConstraints()
    }

    func cancelButtonpressed() {
        delegate?.cancelButtonpressed()
        dismissViewControllerAnimated(false,completion: nil)
    }

    func confirmationButtonPresssed() {
        delegate?.confirmationButtonpressed(objectToDelete)
        dismissViewControllerAnimated(false,completion: nil)
    }

    func setTitleLabel(text: String) {
        let paragraphStyle = NSMutableParagraphStyle()
        paragraphStyle.alignment = NSTextAlignment.Center
        paragraphStyle.linespacing = 4.5
        titleLabel.attributedText = NSMutableAttributedString(
            string: text,attributes: [
                NSFontAttributeName: UIFont(name: "AvenirNextLTPro-Regular",size: 14)!,NSForegroundColorAttributeName: UIColor.colorFromCode(0x151515),NSKernAttributeName: 0.5,NSParagraphStyleAttributeName: paragraphStyle
            ]
        )
    }

    override func updateViewConstraints() {
        if !didSetupConstraints {
            titleLabel.autopinEdgesToSuperviewEdgesWithInsets(UIEdgeInsets(top: 10,left: 10,bottom: 0,right: 10),excludingEdge: .Bottom)
            titleLabel.autoAlignAxisToSuperviewAxis(.Vertical)

            buttonContainer.autopinEdge(.Top,toEdge: .Bottom,ofView: titleLabel,withOffset: 3)
            buttonContainer.autoAlignAxisToSuperviewAxis(.Vertical)
            buttonContainer.autopinEdgetoSuperviewEdge(.Bottom,withInset: 10)

            let contactViews: NSArray = [cancelButton,confirmationButton]
            contactViews.autodistributeViewsAlongAxis(.Horizontal,alignedTo: .Horizontal,withFixedSpacing: 7,insetSpacing: true,matchedSizes: false)

            cancelButton.autopinEdgetoSuperviewEdge(.Top)
            cancelButton.autopinEdgetoSuperviewEdge(.Bottom)
            cancelButton.autoSetDimensionsToSize(CGSize(width: 100,height: 50))

            confirmationButton.autopinEdgetoSuperviewEdge(.Top)
            confirmationButton.autopinEdgetoSuperviewEdge(.Bottom)
            confirmationButton.autoSetDimensionsToSize(CGSize(width: 100,height: 50))

            didSetupConstraints = true
        }

        super.updateViewConstraints()
    }
}

你也可以使你的按钮更可重复使用,而不是硬编码取消和删除,但现在我们离开主题:)

class ConfirmViewController : UIViewController {
    var onCancel : (() -> Void)?
    var onConfirm : ((AnyObject?) -> Void)?

    var objectToDelete : AnyObject?

    func cancelButtonpressed() {
        // defered to ensure it is performed no matter what code path is taken
        defer {
            dismissViewControllerAnimated(false,completion: nil)
        }

        let onCancel = self.onCancel
        // deliberately set to nil just in case there is a self reference
        self.onCancel = nil
        guard let block = onCancel else { return }
        block()
    }

    func confirmationButtonPresssed() {
        // defered to ensure it is performed no matter what code path is taken
        defer {
            dismissViewControllerAnimated(false,completion: nil)
        }
        let onConfirm = self.onConfirm
        // deliberately set to nil just in case there is a self reference
        self.onConfirm = nil
        guard let block = onConfirm else { return }
        block(self.objectToDelete)
    }
}

let confirm = ConfirmViewController()
confirm.objectToDelete = NSObject()
confirm.onCancel = {
    // perform some action here
}
confirm.onConfirm = { objectToDelete in
    // delete your object here
}

如果这不适合StackOverflow，我将很乐意删除该问题。

我开始玩Xcode 6 / Swift(准备发布)，与我以为会是一样非常愉快的体验。话虽如此，移植我喜欢做的“培训”样式的应用程序的一个问题是，由于EXC_BAD_ACCESS，我似乎无法生成一个UIAlertView，代码是：

override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)

    var alert = UIAlertView(title: "Title",message: "Message",delegate: nil,cancelButtonTitle: "OK") // EXC_BAD_ACCESS here
    alert.show()
}

在创建UIAlertView的行上，我得到一个EXC_BAD_ACCESS，因为在一个释放的实例上调用了[UIAlertView retain]。

再次，我正在粉饰这个测试版横幅，但如果我做错了事情，或者其他任何人遇到类似的问题，好奇。

let alert = UIAlertView()
alert.title = "Title"
alert.message = "My message"
alert.addButtonWithTitle("Ok")
alert.show()

但在iOS 8

UIAlertView已弃用。所以使用UIAlertController与优先级的UIAlertControllerStyleAlert类型。它应该是：

var alert = UIAlertController(title: "Title",preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Ok",style: UIAlertActionStyle.Default,handler: nil))
self.presentViewController(alert,animated: true,completion: nil)

检查上面的代码，你是否收到相同的错误？

似乎标准的UIButton无法实现这一点.所以我创建了一个包含UIImageView和UILabel的UIView.

您可以在右侧看到实现,“跟随行程”按钮(“”是UIImageView,“跟随行程”是UILabel)

我现在正试图使这样的UIView(即按钮)可点击,但我找不到办法.

这是我的实现,但它不起作用：

class StationsIntroHeader: UITableViewCell {

    @IBOutlet weak var bigButton: UIView!

    override  func awakeFromNib() {
        super.awakeFromNib()
        let tap = UITapGestureRecognizer(target: self,action: Selector("followTrip:"))
        bigButton.addGestureRecognizer(tap)
    }

    func followTrip(sender:UITapGestureRecognizer) {
        print("tap working")
    }
}

我确保在UIVmageView和UILabel上的UIView和OFF上启用了User Interaction Enabled

class TableViewController: UITableViewController {
  override func tableView(tableView: UITableView,numberOfRowsInSection section: Int) -> Int {
    return 5
  }

  override func tableView(tableView: UITableView,cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    return tableView.dequeueReusableCellWithIdentifier("CustomCell",forIndexPath: indexPath)
  }
}

class CustomCell: UITableViewCell {
  @IBOutlet weak var bigButton: UIView!

  override func awakeFromNib() {
    super.awakeFromNib()
    let tap = UITapGestureRecognizer(target: self,action: Selector("bigButtonTapped:"))
    bigButton.addGestureRecognizer(tap)
  }

  func bigButtonTapped(sender: UITapGestureRecognizer) {
    print("bigButtonTapped")
  }
}

我没有为视图或imageview或标签更改userInteractionEnabled的任何默认值.将我的实施与你的实施进行比较,看看你是否忘记了某些事情…连接插座？

示例项目：https://www.dropbox.com/sh/hpetivhc3gfrapf/AAAf6aJ0zhvRINPFJHD-iMvya?dl=0

编辑您的项目

func tableView(tableView: UITableView,viewForHeaderInSection section: Int) -> UIView? {
  let headerCell = tableView.dequeueReusableCellWithIdentifier("StationsIntroHeader") as! StationsIntroHeader
  headerCell.update()
  return headerCell
  // return headerCell.update().contentView
}