ios – Swift Custom UIAlertView

概述我正在尝试进行确认删除d出视图.因为我想要的设计与典型的UIAlertViewd出窗口的风格非常不同,所以我决定创建一个自定义的ConfirmationViewController,我将触发d出窗口. 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ConfirmationViewControllerd出窗口的方法： let confirmationVi 我正在尝试进行确认删除d出视图.因为我想要的设计与典型的UIAlertVIEwd出窗口的风格非常不同,所以我决定创建一个自定义的ConfirmationVIEwController,我将触发d出窗口.

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ConfirmationVIEwControllerd出窗口的方法：

let confirmationVIEwController = ConfirmationVIEwController()confirmationVIEwController.delegate = selfconfirmationVIEwController.setTitleLabel("Are you sure you want to remove \(firstname)?")confirmationVIEwController.modalPresentationStyle = UIModalPresentationStyle.PopoverconfirmationVIEwController.preferredContentSize = CGSizeMake(230,130)let popoverConfirmationVIEwController = confirmationVIEwController.popoverPresentationControllerpopoverConfirmationVIEwController?.permittedArrowDirections = UIPopoverArrowDirection(rawValue: 0)popoverConfirmationVIEwController?.delegate = selfpopoverConfirmationVIEwController?.sourceVIEw = self.vIEwpopoverConfirmationVIEwController?.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 *** 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d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()    }}

解决方法 像下面这样的东西应该允许它.请注意,可以进行相当多的改进.例如,您可以对要删除的对象使用泛型而不是AnyObject.如果你无论如何都传递了内联闭包,你也不一定需要传入它,所以你可能只是删除它.

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}

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