100%工作测试

第一次进口

import UserNotifications

然后在类中添加委托

UNUserNotificationCenterDelegate

class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate

下面的方法是负责，而应用程序是打开和通知来。

将呈现

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

           let alertVC = UIAlertController.init(title: title, message: body, preferredStyle: .alert)

            alertVC.addAction(UIAlertAction.init(title: appLan_share.Ok_txt, style: .default, handler: {
                _ in
                   //handle tap here or navigate somewhere…..                
            }))

            vc?.present(alertVC, animated: true, completion: nil)

            print("notification Data: \(content.userInfo.values)")
                completionHandler([.alert, .sound])



}

您还可以通过检查当前应用程序状态来处理应用程序状态。

此外，如果你的应用程序没有运行，那么下面的方法是负责处理推送通知

didReceive

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        let userInfo = response.notification.request.content.userInfo
        let aps = userInfo["aps"] as? [String: Any]
        let alert = aps?["alert"] as? [String: String]

}

如果应用程序在前台运行，iOS不会显示通知横幅/警报。这是故意的。你必须编写一些代码来处理应用程序在前台接收通知的情况。您应该以最合适的方式显示通知(例如，向UITabBar图标添加徽章号，模拟notification Center横幅等)。

正如@Danial Martine所说，iOS不会显示通知横幅/提醒。这是故意的。但如果真要这么做，还有一个办法。我也用同样的方法做到了这一点。

1.从parse FrameWork下载解析框架

2.导入# Import <Parse/Parse.h> .h

3.将以下代码添加到您的didReceiveRemoteNotification方法

 - (void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    [PFPush handlePush:userInfo];
}

PFPush会注意如何处理远程通知。如果App在前台，这显示警报，否则它显示在顶部的通知。

也适用于iOS 14+，不需要手动处理任何警报或视图，只需让iOS做它的事情

在里面，我们重新收到通知替换如下代码

func userNotificationCenter(
    _ center: UNUserNotificationCenter,
    willPresent notification: UNNotification,
    withCompletionHandler completionHandler:
    @escaping (UNNotificationPresentationOptions) -> Void
  ) {
    
    if (UIApplication.shared.applicationState == .inactive || UIApplication.shared.applicationState == .background) {
      if #available(iOS 14.0, *) {
        completionHandler([[.banner, .sound]])
      } else {
        completionHandler([.alert, .sound])
      }
    } else {
      if #available(iOS 14.0, *) {
        completionHandler([[.banner]])
      } else {
        completionHandler([.alert])
      }
    }
  }

要注意的主要事情是不要使用声音，而在前景，它不会显示横幅

用于swift 5解析推送通知字典

    func application(_ application: UIApplication, didReceiveRemoteNotification data: [AnyHashable : Any]) {
            if application.applicationState == .active {
                if let aps1 = data["aps"] as? NSDictionary {
                    if let dict = aps1["alert"] as? NSDictionary {
                        if let strTitle = dict["title"] as? String , let strBody = dict["body"] as? String {
                            if let topVC = UIApplication.getTopViewController() {
                                //Apply your own logic as per requirement
                                print("strTitle ::\(strTitle) , strBody :: \(strBody)")
                            }
                        }
                    }
                }
            }
        }

获取topBanner所在的top viewController

extension UIApplication {

    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
    }
}

添加completionHandler行委托方法为我解决了同样的问题:

//Called when a notification is delivered to a foreground app.
@available(iOS 10.0, *)
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {

completionHandler([.alert, .badge, .sound])
}