点击执行功能推送通知

Question

我有一个 iOS APP 和一个推送通知系统，它以编程方式发送通知以将其令牌存储在数据库中。

我有一些视图在默认视图控制器中显示或隐藏。我想让 APP 在用户点击通知时显示特定视图。我创建了一个函数，但我不知道如何使它工作。

Answer 1

您可以在AppDelegate 中捕获推送通知，并在您希望在点击时显示特定视图的控制器文件中添加观察者。

在userInfo 或object 中发送推送通知负载数据NotificationCenter.default.post。

@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
    UIApplication.shared.applicationIconBadgeNumber = 0
    NotificationCenter.default.post(name: NSNotification.Name(rawValue: "NewNotification") , object: nil, userInfo: response.notification.request.content.userInfo)
}

@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
    completionHandler(.alert)
}

在你的控制器文件中添加通知观察者：

NotificationCenter.default.addObserver(self, selector: #selector(pushNotificationHandler(_:)) , name: NSNotification.Name(rawValue: "NewNotification"), object: nil)

然后调用 UI 更新方法：

 func pushNotificationHandler(_ notification : NSNotification) {
   // self.udateUI() // Add code to show a specific view on tap.
}

Answer 2

在 AppDelegate APNS 委托方法中，根据您通过通知/有效负载获得的 userInfo 进行检查，然后调用该函数

 func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

 if response.notification.request.content.userInfo["ViewType"] as! String == "ShowNotificationView" {
 // Then you can implement your functionaliton here according to the need. 
    }

如果您需要任何其他帮助，请通过发布实际代码和要求告诉我

Answer 3

首先，需要根据您需要导航或显示特定视图控制器（屏幕）的屏幕内容，向推送通知有效负载添加一个键为screen_type。

之后，将以下方法添加到实现通知处理程序的 AppDelegate 类中

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any]) {
    let payload = userInfo
    let type = payload["type"]
    if type == "all-posts" || type == "default"{
        /*
         * I'm assuming you have your own HomeViewController object
         */
        let homeVC = HomeViewController()
        // present or push
        UIApplication.topViewController()?.present(homeVC, animated: true, completion: nil)
    }else if type = "post-details"{
        /*
         * I'm assuming you have your own PostDetailViewController object
         */
        let postDetailVC = PostDetailViewController()
        // present or push
        UIApplication.topViewController()?.present(postDetailVC, animated: true, completion: nil)
    }else if type == "friend-request"{
        /*
         * I'm assuming you have your own UserViewController object
         */
        let userVC = UserViewController()
        // present or push
        UIApplication.topViewController()?.present(userVC, animated: true, completion: nil)
    }
}

辅助方法

extension UIApplication {
    class func topViewController(base: UIViewController? = (UIApplication.sharedApplication().delegate as! AppDelegate).window?.rootViewController) -> UIViewController? {
        if let nav = base as? UINavigationController {
            return topViewController(base: nav.visibleViewController)
        }
        if let tab = base as? UITabBarController {
            if let selected = tab.selectedViewController {
                return topViewController(base: selected)
            }
        }
        if let presented = base?.presentedViewController {
            return topViewController(base: presented)
        }
        return base
    }
}

注意：如果您使用的是最新版本的 swift，则需要实现 UNUserNotificationCenterDelegate 方法