Swift如何在系统启动之前更改从firebase（FCM）收到的通知标题和正文？

Posted 2023-02-24

【中文标题】Swift如何在系统启动之前更改从firebase（FCM）收到的通知标题和正文？

【英文标题】：Swift How to change the notification title and body received from firebase (FCM) before fire it up by the system?

【发布时间】：2019-07-31 10:54:23

【问题描述】：

如何在系统启动之前更改收到的 Firebase 通知的标题和正文？

我成功收到通知，但我需要在显示通知之前修改标题和正文

这是我的AppDelegate 课程

extension AppDelegate : UNUserNotificationCenterDelegate 

// Receive displayed notifications for ios 10 devices.
func userNotificationCenter(_ center: UNUserNotificationCenter,
                            willPresent notification: UNNotification,
                            withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) 
    let userInfo = notification.request.content.userInfo

    // With swizzling disabled you must let Messaging know about the message, for Analytics
    // Messaging.messaging().appDidReceiveMessage(userInfo)

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

    // Print full message.
    print(userInfo)

    // Change this to your preferred presentation option
    completionHandler([.alert,.sound])


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()



func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) 
    // If you are receiving a notification message while your app is in the background,
    // this callback will not be fired till the user taps on the notification launching the application.
    // TODO: Handle data of notification

    // With swizzling disabled you must let Messaging know about the message, for Analytics
    // Messaging.messaging().appDidReceiveMessage(userInfo)

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

    // Print full message.
    print(userInfo)


func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any],
                 fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) 
    // If you are receiving a notification message while your app is in the background,
    // this callback will not be fired till the user taps on the notification launching the application.
    // TODO: Handle data of notification

    // With swizzling disabled you must let Messaging know about the message, for Analytics
    // Messaging.messaging().appDidReceiveMessage(userInfo)

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

    // Print full message.
    print(userInfo)

    completionHandler(UIBackgroundFetchResult.newData)

【问题讨论】：

找到解决方案了吗？

【参考方案1】：

这看起来类似于这里提出的问题：It's possible to change push notification message before display on device from iOS side?

在通知服务中看起来可能是可行的，但是，您也可以按照您希望写入的方式从 FCM 发送有效负载。是否有无法从服务器修改它的原因？