使用UnotificationServiceExtension获得丰富的远程通知

Question

我正在尝试在iOS 10中实现丰富的远程通知。我已经实现了此代码。收到通知后的控件正在此处，但是我不知道如何下载图像并在通知中显示。提前致谢。

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...
        //print("title for image = (bestAttemptContent.title)")
        bestAttemptContent.title = "(bestAttemptContent.title) [modified]"
        contentHandler(bestAttemptContent)
    }
}

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)
    }
}
}

Answer 1

您将在notificationData中获得附件

"attachment-url": "https://yourimage.png"

这就是您可以使用它的方式

self.contentHandler = contentHandler
        bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
        // Get the custom data from the notification payload
        if let notificationData = request.content.userInfo["data"] as? [String: String] {
            // Grab the attachment
            if let urlString = notificationData["attachment-url"], let fileUrl = URL(string: urlString) {
                // Download the attachment
                URLSession.shared.downloadTask(with: fileUrl) { (location, response, error) in
                    if let location = location {
                        // Move temporary file to remove .tmp extension
                        let tmpDirectory = NSTemporaryDirectory()
                        let tmpFile = "file://".appending(tmpDirectory).appending(fileUrl.lastPathComponent)
                        let tmpUrl = URL(string: tmpFile)!
                        try! FileManager.default.moveItem(at: location, to: tmpUrl)
                        // Add the attachment to the notification content
                        if let attachment = try? UNNotificationAttachment(identifier: "", url: tmpUrl) {
                            self.bestAttemptContent?.attachments = [attachment]
                        }
                    }
                    // Serve the notification content
                    self.contentHandler!(self.bestAttemptContent!)
                    }.resume()
            }
        }

从此处引用

Answer 2

最终其工作。这里的问题是我必须添加

nsapptransportsecurity

在扩展名的plist中标记。添加此标签后，它开始显示图像。希望它能帮助某人。