Swift 通过推送通知发送图像在iOS中不起作用

根据文档，我添加了NotificationExtension。这是密码

import UserNotifications
import Firebase
import FirebaseMessaging

class NotificationService: UNNotificationServiceExtension {

    var contentHandler: ((UNNotificationContent) -> Void)?
    var bestAttemptContent: UNMutableNotificationContent?

    override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
        self.contentHandler = contentHandler
        bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)

        if let bestAttemptContent = bestAttemptContent {
            // Modify the notification content here...
            bestAttemptContent.title = "\(bestAttemptContent.title) [modified]"

            //contentHandler(bestAttemptContent)
        }

        Messaging.serviceExtension().populateNotificationContent(self.bestAttemptContent!, withContentHandler: contentHandler)
    }

    override func serviceExtensionTimeWillExpire() {
        // Called just before the extension will be terminated by the system.
        // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
        if let contentHandler = contentHandler, let bestAttemptContent =  bestAttemptContent {
            contentHandler(bestAttemptContent)
        }
    }
}

firebase控制台显示该图像

[！[在此处输入图像描述][1][1]

然而，在debug中，didReceive从不调用，我收到的通知也没有图像，即使我在iPhone设置中将通知设置为持久

需要采取什么措施来解决此问题？如何查看NotificationService是否正确连接到我的应用程序

[

---

也向扩展添加了通知，但我看不到任何后台模式atm，尽管它们不是必需的，因为代码还没有出现。调试器仍然无法运行。

首先，通知负载应该包括

aps

中的参数

可变内容

此参数很重要。

如果在
aps
中不存在，则您的通知服务将不会被调用，并且您将无法获得通知右侧的图像

从文件：

可变内容：Int

notification service应用程序扩展标志。如果该值为1，则系统会在传递之前将通知传递给notification service应用程序扩展。使用您的扩展来修改通知的内容

其次，您需要在notificationService中下载图像并将其附加到通知中

您可以使用下面的示例作为起点。这取决于您如何在有效负载内发送图像链接。如果您将发布您的实际有效负载，那么我可以编辑我的帖子

import UserNotifications
import Foundation
import SwiftyJSON

class NotificationService: UNNotificationServiceExtension {

    var contentHandler: ((UNNotificationContent) -> Void)?
    var bestAttemptContent: UNMutableNotificationContent?

    override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
        self.contentHandler = contentHandler
        bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)

        if let bestAttemptContent = bestAttemptContent {
            let apsData = request.content.userInfo["aps"] as! [String : Any]
            let alertData = apsData["alert"] as! [String : Any]
            let imageData = request.content.userInfo["fcm_options"] as! [String : Any]
            bestAttemptContent.title = (alertData["title"] as? String) ?? ""
            bestAttemptContent.body = (alertData["body"] as? String) ?? ""

            guard let urlImageString = imageData["image"] as? String else {
                contentHandler(bestAttemptContent)
                return
            }
            if let newsImageUrl = URL(string: urlImageString) {

                guard let imageData = try? Data(contentsOf: newsImageUrl) else {
                    contentHandler(bestAttemptContent)
                    return
                }
                guard let attachment = UNNotificationAttachment.saveImageToDisk(fileIdentifier: "newsImage.jpg", data: imageData, options: nil) else {
                    contentHandler(bestAttemptContent)
                    return
                }
                bestAttemptContent.attachments = [ attachment ]
            }
            Messaging.serviceExtension().populateNotificationContent(self.bestAttemptContent!, withContentHandler: contentHandler)
        }
    }

    override func serviceExtensionTimeWillExpire() {
        // Called just before the extension will be terminated by the system.
        // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
        if let contentHandler = contentHandler, let bestAttemptContent =  bestAttemptContent {
            contentHandler(bestAttemptContent)
        }
    }
}

//MARK: Extension for Notification Attachment
extension UNNotificationAttachment {

    static func saveImageToDisk(fileIdentifier: String, data: Data, options: [NSObject : AnyObject]?) -> UNNotificationAttachment? {
        let fileManager = FileManager.default
        let folderName = ProcessInfo.processInfo.globallyUniqueString
        let folderURL = NSURL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent(folderName, isDirectory: true)

        do {
            try fileManager.createDirectory(at: folderURL!, withIntermediateDirectories: true, attributes: nil)
            let fileURL = folderURL?.appendingPathComponent(fileIdentifier)
            try data.write(to: fileURL!, options: [])
            let attachment = try UNNotificationAttachment(identifier: fileIdentifier, url: fileURL!, options: options)
            return attachment
        } catch let error {
            print("error \(error)")
        }

        return nil
    }
}

首先，您的通知负载应该包括
aps
中的参数
可变内容

此参数很重要。

如果在
aps
中不存在，则您的通知服务将不会被调用，并且您将无法获得通知右侧的图像

从文件：

可变内容：Int

notification service应用程序扩展标志。如果该值为1，则系统会在传递之前将通知传递给notification service应用程序扩展。使用您的扩展来修改通知的内容

其次，您需要在notificationService中下载图像并将其附加到通知中

您可以使用下面的示例作为起点。这取决于您如何在有效负载内发送图像链接。如果您将发布您的实际有效负载，那么我可以编辑我的帖子

import UserNotifications
import Foundation
import SwiftyJSON

class NotificationService: UNNotificationServiceExtension {

    var contentHandler: ((UNNotificationContent) -> Void)?
    var bestAttemptContent: UNMutableNotificationContent?

    override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
        self.contentHandler = contentHandler
        bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)

        if let bestAttemptContent = bestAttemptContent {
            let apsData = request.content.userInfo["aps"] as! [String : Any]
            let alertData = apsData["alert"] as! [String : Any]
            let imageData = request.content.userInfo["fcm_options"] as! [String : Any]
            bestAttemptContent.title = (alertData["title"] as? String) ?? ""
            bestAttemptContent.body = (alertData["body"] as? String) ?? ""

            guard let urlImageString = imageData["image"] as? String else {
                contentHandler(bestAttemptContent)
                return
            }
            if let newsImageUrl = URL(string: urlImageString) {

                guard let imageData = try? Data(contentsOf: newsImageUrl) else {
                    contentHandler(bestAttemptContent)
                    return
                }
                guard let attachment = UNNotificationAttachment.saveImageToDisk(fileIdentifier: "newsImage.jpg", data: imageData, options: nil) else {
                    contentHandler(bestAttemptContent)
                    return
                }
                bestAttemptContent.attachments = [ attachment ]
            }
            Messaging.serviceExtension().populateNotificationContent(self.bestAttemptContent!, withContentHandler: contentHandler)
        }
    }

    override func serviceExtensionTimeWillExpire() {
        // Called just before the extension will be terminated by the system.
        // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
        if let contentHandler = contentHandler, let bestAttemptContent =  bestAttemptContent {
            contentHandler(bestAttemptContent)
        }
    }
}

//MARK: Extension for Notification Attachment
extension UNNotificationAttachment {

    static func saveImageToDisk(fileIdentifier: String, data: Data, options: [NSObject : AnyObject]?) -> UNNotificationAttachment? {
        let fileManager = FileManager.default
        let folderName = ProcessInfo.processInfo.globallyUniqueString
        let folderURL = NSURL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent(folderName, isDirectory: true)

        do {
            try fileManager.createDirectory(at: folderURL!, withIntermediateDirectories: true, attributes: nil)
            let fileURL = folderURL?.appendingPathComponent(fileIdentifier)
            try data.write(to: fileURL!, options: [])
            let attachment = try UNNotificationAttachment(identifier: fileIdentifier, url: fileURL!, options: options)
            return attachment
        } catch let error {
            print("error \(error)")
        }

        return nil
    }
}

然后，您将缺少实际下载图像并将其作为附件添加到通知中的部分。我在该位置放置了一个调试器，而代码从未进入该服务。Firebase还允许您添加Messaging.serviceExtension（）.populateNotificationContent（self.bestAttemptContent！，withContentHandler:contentHandler）这将自动处理fcm，遗憾的是它不起作用。我更新了我的代码以使用您的AP。另外，您是否在XCode中运行扩展？否则您将永远无法调试它。选择扩展作为目标，并在真实设备上点击Build。一旦我运行扩展，它将打开应用程序，然后在到达主屏幕后自动关闭它，就像崩溃一样，没有错误。当您缺少实际下载图像并将其作为附件添加到通知中的部分时。我在该位置放置了调试器，代码从未进入该服务。Firebase还允许您添加消息传递。serviceExtension（）.populateNotificationContent（self.bestAttemptContent！，withContentHandler:contentHandler）这将自动处理fcm，遗憾的是它不起作用。我更新了我的代码以使用您的AP。另外，您是否在XCode中运行扩展？否则您将永远无法调试它。选择扩展作为目标，并在真实设备上点击Build。一旦我运行扩展，它将打开应用程序，然后在到达主屏幕后自动关闭它，就像撞车一样，没有错误，什么都没有