iOS UIAlertController高级自定义

需求：

自定义了无数的弹窗，发现系统自带的有许多私有属性，随扩展玩玩，实现以下三种效果：（核心是通过私有 api 属性 通过 KVC 实现；）

效果一：弹窗图片

Simulator Screen Shot - iPhone 11 Pro - 2021-08-13 at 17.36.24.png

@objc func showActionSheet4(){

        let message = """
        /// 我试图解决UIAlertController的局限性。
        """;

        let contentView = UIImageView(image: UIImage(named: "Skull.jpg"))
        contentView.contentMode = .scaleAspectFit
        
        UIAlertController(title: "Select date", message: message, preferredStyle: .actionSheet)
            .addActionTitles()
            .setContent(view: contentView, height: 300)
            .present()
    }

效果二：弹窗嵌套导航

WechatIMG63.jpeg

    @objc func showAlertContentVC() {
        let message = "弹窗内嵌套了一个导航控制器";

        UIAlertController(title: "嵌套导航", message: message, preferredStyle: .actionSheet)
            .addActionTitles([kTitleCancell])
            .setContent(vc: UINavigationController(rootViewController: ThirdViewController()), height: 300)
            .present()
    }

效果三：弹窗自定义UIAlertAction

WechatIMG64.jpeg

@objc func showActionSheet7(){
        var list = Array.init(count: 20) { "item_\($0)" }
        list.append(kTitleCancell)

        let alertVC = UIAlertController(title: "请选择", message: "UIAlertAction 自定义 ", preferredStyle: preferredStyle)
       
        list.map { e in
            if e == kTitleCancell {
                let action = UIAlertAction(title: e, style: .cancel, handler: { action in
                    DDLog(action.title)
                })
                return action
            }

            let action = UIAlertAction(title: "", style: .default, handler: nil)

            let contentView = NNAlertActionView()
            contentView.imageView.image = UIImage(named: "Skull.jpg")
            contentView.textLabel.text = e
            contentView.detailTextLabel.text = "detailTextLabel"

            contentView.addGestureTap { reco in
                action.setValue(NSNumber(booleanLiteral: true), forKey: "checked")
                alertVC.dismiss(animated: true, completion: nil)
                DDLog(e)
            }
            action.setContent(view: contentView, inset: .zero)
            return action
        }.forEach {
            alertVC.addAction($0)
        }
        alertVC.present()
    }

UIAlertController 私有 api 列表及其类型：

_message, @"NSString"
_attributedTitle, @"NSAttributedString"
_attributedMessage, @"NSAttributedString"
_attributedDetailMessage, @"NSAttributedString"
_linkedAlertControllers, @"NSSet"
_cancelAction, @"UIAlertAction"
_actionToKeyCommandsDictionary, 
_keyCommandToActionMapTable, @"NSMapTable"
_resolvedStyle, q
_preferredStyle, q
_contentViewController, @"UIViewController"
_textFieldViewController, 
_backButtonDismissGestureRecognizer, 
_ownedTransitioningDelegate, @
_addContentViewControllerToViewHierarchyNeeded, B
_isInSupportedInterfaceOrientations, B
_isInRecomputePreferredContentSize, B
_batchActionChangesInProgressCount, q
_presenter, @"_UIAlertControllerShimPresenter"
_actionsWithInvokedHandlers, @"NSPointerArray"
_alertControllerStackManager, 
_hidden, B
_springLoaded, B
__shouldFlipFrameForShimDismissal, B
__shouldAllowNilParameters, B
_hasPreservedInputViews, B
_actions, @"NSMutableArray"
_headerContentViewController, @"UIViewController"
_separatedHeaderContentViewController, 
_styleProvider, 
_preferredAction, @"UIAlertAction"
_temporaryAnimationCoordinator, 
_previewInteractionController, 
__visualStyle, @"UIAlertControllerVisualStyle"
_indexesOfActionSectionSeparators, @"NSIndexSet"
__actionDelimiterIndices, @"NSMutableArray"
__compatibilityPopoverController, 
__systemProvidedPresentationView, @"UIView"
__systemProvidedPresentationDelegate, 
_systemProvidedGestureRecognizer, 
_coordinatedActionPerformingDelegate, 
__presentationSourceRepresentationView, @"UIView"
_titleMaximumLineCount, q
_titleLineBreakMode, q

UIAlertAction 私有 api 列表及其类型：

_title, @"NSString"
_titleTextAlignment, q
_enabled, B
_checked, B
_isPreferred, B
_imageTintColor, @"UIColor"
_titleTextColor, @"UIColor"
_style, q
_handler, @?
_simpleHandler, @?
_image, @"UIImage"
_shouldDismissHandler, @?
__descriptiveText, @"NSString"
_contentViewController, @"UIViewController"
_keyCommandInput, @"NSString"
_keyCommandModifierFlags, q
__representer, 
__interfaceActionRepresentation, @"UIInterfaceAction"
__alertController, @"UIAlertController"

github