如何在 iOS 10 和 Swift 3 中获取从 Firebase 控制台发送的推送通知的正文？答案

【问题标题】：How to get the body of a push notification sent from Firebase console in iOS 10 and Swift 3?如何在 iOS 10 和 Swift 3 中获取从 Firebase 控制台发送的推送通知的正文？
【发布时间】：2017-02-14 10:31:19
【问题描述】：

我正在开发一个应该接收从 Firebase 控制台发送的推送通知的 iOS 应用。我正在使用 Swift 3 和 iOS 10。

根据 Firebase 文档的建议，我们必须在应用完成启动之前将委托对象分配给 UNUserNotificationCenter 对象以接收和显示通知，并将 FIRMessaging 对象分配给接收数据消息。

这已在didFinishLaunchingWithOptions 方法中完成。我按照所有步骤来配置 Firmessaging 以及 APN。

现在，当我从 Firebase 控制台发送消息时，我通过 applicationReceivedRemoteMessage(_ remoteMessage: FIRMessagingRemoteMessage) 方法接收它。

问题是我无法从remoteMessage.appData 字典中提取邮件正文。知道身体在remoteMessage.appData["notification"] 内。确实，指令

print(remoteMessage.appData)

打印

[AnyHashable("notification"): {
   body = Hello Notifications;
   e = 1;
}, AnyHashable("from"): 49679924394, AnyHashable("collapse_key"): com.company.app]

打印

 remoteMessage.appData["notification"]

表演

{
   body = Hello Notifications;
   e = 1;
}

我试过了

remoteMessage.appData["notification"]["body"]

和

 remoteMessage.appData["notification"].body

但它会导致语法错误。我无法提取身体以便在警报控制器中显示它。 appDelegate 的代码如下。

class AppDelegate: UIResponder, UIApplicationDelegate, FIRMessagingDelegate, UNUserNotificationCenterDelegate{
......

func application(_ application: UIApplication, didFinishLaunchingWithOptions, launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    application.isStatusBarHidden = true
    FIRApp.configure()
    FIRDatabase.database().persistenceEnabled = true
    if #available(iOS 10.0, *) {
       let authOptions : UNAuthorizationOptions = [.alert, .badge, .sound]
       let center = UNUserNotificationCenter.current()
       center.requestAuthorization(options: authOptions, completionHandler: {_ ,_ in })
       application.registerForRemoteNotifications()
// For iOS 10 display notification (sent via APNS)
       UNUserNotificationCenter.current().delegate = self
// For iOS 10 data message (sent via FCM)        
       FIRMessaging.messaging().remoteMessageDelegate = self         
    } else {
       let settings: UIUserNotificationSettings = UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
       application.registerUserNotificationSettings(settings)
    }
    application.registerForRemoteNotifications()
     return true
}
// Receive data message on iOS 10 devices.
func applicationReceivedRemoteMessage(_ remoteMessage: FIRMessagingRemoteMessage) {
    print(remoteMessage.appData)
    print(remoteMessage.appData["notification"]!)
    let alertController = UIAlertController(title: "Message from IOBird Developer Team", message: "?????? Body of the message ?????", preferredStyle: .alert)
    let OKAction = UIAlertAction(title: "OK", style: .default) { (action:UIAlertAction!) in
    }
    alertController.addAction(OKAction)
    self.window?.rootViewController?.present(alertController, animated: true, completion: nil)
}

【问题讨论】：

标签： ios firebase swift3 ios10 firebase-notifications

【解决方案1】：

感谢 Arthur Thompson 的帮助，你给了我这个想法。我发布答案以防其他人需要它。我写了

let d : [String : Any] = remoteMessage.appData["notification"] as! [String : Any]
let body : String = d["body"] as! String
print(body)

【讨论】：

【解决方案2】：

您应该能够使用以下方式检索身体：

let body = remoteMessage.appData["notification"]!["body"] as! String
print(body)

【讨论】：

我试过这条指令，但 remoteMessage.appData["notification"] 不是字典
我明白了，抱歉试试：remoteMessage.appData[AnyHashable("notification")]！

【解决方案3】：

您应该能够打印响应中的任何一行：

let response = remoteMessage.appData

print(response[AnyHashable("notification")] as Any)

关于 AnyHashable 的 Apple 文档：https://developer.apple.com/reference/swift/anyhashable

【讨论】：

【解决方案4】：

我在 Firebase 消息传递和提取数据方面遇到了完全相同的问题，这就像一个魅力。（斯威夫特 3）

    print("====")
    let d : [String : Any] = remoteMessage.appData["notification"] as! [String : Any]
    let body : String = d["body"] as! String
    let click_action : String = d["click_action"] as! String
    let title : String = d["title"] as! String
    print(body)
    print(title)
    print(click_action)
    print("=====")

【讨论】：

【解决方案5】：

最好的方法

    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)")
      }
       UNUserNotificationCenter.current().delegate = self as UNUserNotificationCenterDelegate


       let apsData = (userInfo["order_id"] as? NSString)?.integerValue
       let d : [String : Any] = userInfo["aps"] as! [String : Any]
       let nh : [String : Any] = d["alert"] as! [String : Any]
   
       let body : String = nh["body"] as! String
       let title : String = nh["title"] as! String
   
       print(body,title)

       
       // if you need to go some views
       if apsData != nil {
           let sb = UIStoryboard(name: "Order", bundle: nil)
           let vc = sb.instantiateViewController(withIdentifier: "RequestDeliveriesVC") as! RequestDeliveriesVC
           vc.order_ofer = apsData ?? 0

           let appDelegate = UIApplication.shared.delegate as! AppDelegate

           guard  let window = appDelegate.window else {return}
           window.rootViewController = vc

           UIView.transition(with: window, duration: 0.5, options: .transitionCrossDissolve, animations: nil, completion: nil)
       } else {
        
       }
    
      print(userInfo)
      


      completionHandler()
    }

   }

【讨论】：