将视图显示为TableView Controller中的内部应用程序通知

Question

我尝试在前台将应用程序接收到远程推送通知时，尝试显示视图。它在View Controllers中工作正常，但不适用于Table View Controller。我找不到一种方法来获取当前可见单元格的Y位置。

Obs .：如果有人知道如何使其始终显示在导航栏而不是内容视图上，那就更好了。

编辑：遵循一些代码：

 //Return the current VC that the user is seeing
    func getTopVC()->UIViewController?{
        let application = UIApplication.shared
        if application.applicationState == .active {
            if let topVC = UIApplication.getTopViewController() {
                return topVC
            }
        }
        return nil
    }


//Animation that shows XIB sliding down from outside the VC to Y = 0
    func animateXib(xibToAnimate: ApNotificationsXibView){
        let animationTime = 0.3
        let originalFrame = xibToAnimate.frame
        let options: UIView.AnimationOptions = [.allowUserInteraction]

        UIView.animate(withDuration: animationTime, delay: 0, options: options, animations: {
            xibToAnimate.frame = CGRect(x: 0, y: 0, width: originalFrame.width, height: originalFrame.height)
        }) { (isEntryAnimationDone) in

            //SECOND ANIMATION TO SLIDE UP
            UIView.animate(withDuration: animationTime, delay: 3.0, animations: {
                xibToAnimate.frame = originalFrame
            }) { (done) in
                xibToAnimate.removeFromSuperview()
            }

        }
    }

//Pre set some values, Add XIB on the current VC SubView and animate it
func displayNotificationXib(sendersName: String, sendersImage: UIImage, textToShow:String, connectionType: ApUserConnection.ConnectionType?, action: ApNotificationsXibView.TypeNotification, originUserId:String){
        if(isShowingXIB == false){
            if let vcToShowXib = self.getTopVC(){
                let xib = self.prepareXibToAdd()
                if let connect = ApActiveConnectionsServices.sharedInstance.getLocalConnectionWithId(with: originUserId){
                    xib.setValues(title: sendersName, sendersImage: sendersImage, body: textToShow, action: action, originId: originUserId, connect: connect)
                }
                vcToShowXib.view.addSubview(xib)
                animateXib(xibToAnimate: xib)
            }
        }
}





    //EXTENSION of UIApplication that get the current VC that the user is seeing
    class func getTopViewController(base: UIViewController? = UIApplication.shared.keyWindow?.rootViewController) -> UIViewController? {

        if let nav = base as? UINavigationController {
            return getTopViewController(base: nav.visibleViewController)

        } else if let tab = base as? UITabBarController, let selected = tab.selectedViewController {
            return getTopViewController(base: selected)

        } else if let presented = base?.presentedViewController {
            return getTopViewController(base: presented)
        }
        return base
    }

Answer 1

如果要在导航栏上显示自定义视图，请将视图添加到导航控制器，而不是将其添加到视图控制器或表视图控制器。

let customView = //...
self.navigationController?.view.addSubview(customView)