如何在前台iOS Swift 3.0中接收推送通知？

Question

我想在前台状态显示推送通知iOS 8.0。我在后台状态接收通知，但未处于前台状态。

Answer 1

extension AppDelegate: UNUserNotificationCenterDelegate { 

    // Receive displayed notifications for iOS 10 devices. 
    func userNotificationCenter(_ center: UNUserNotificationCenter, 
           willPresent notification: UNNotification, 
           withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) { 

     completionHandler(UNNotificationPresentationOptions.alert) 

     //completionHandler([.alert,.badge]) 
     let userInfo = notification.request.content.userInfo 
     if let messageID = userInfo[gcmMessageIDKey] { 

     } 

     // Print full message. 
     print(userInfo) 
     completionHandler([]) 
    } 

    func userNotificationCenter(_ center: UNUserNotificationCenter, 
          didReceive response:UNNotificationResponse, 
          withCompletionHandler completionHandler: @escaping() -> Void) { 
     let userInfo = response.notification.request.content.userInfo 

     // Print message ID. 
     if let messageID = userInfo[gcmMessageIDKey] { 
      print("Message ID: \(messageID)") 
     } 

     // Print full message. 
     print(userInfo) 
     completionHandler() 
    } 
}