iOS推送通知中的图像 [英] Images in iOS push notification

问题描述

我正在尝试在推送通知中发送 images
我已在app delegate中进行通知注册，并且apns设备令牌正在正常生成。
另外我在服务分机中编码如下：

I am trying to send images in push notifications I have made the notifications registrations in app delegate and apns device token is generating properly. ALso I have coded in service ext as follows:

import UserNotifications

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)

// 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()
    }
}
}
}

。
json中的有效负载如下：

. And the payload in json is as follows

{
    "aps":
            {"sound":"default","alert":
                                        {"title":"iOS","body":"Hello Dude...."},
            "mutable-content": 1},
    "CustomData":
                    {"mType":"alert","m":"Hello Dude...."},
    "Attachement-url":"https://pusher.com/static_logos/320x320.png"
} 

我收到了标题和消息但图片未到来。
请指导如何在推送通知中获取图像

I am receiving the title and message but image is not coming. Please guide how to get image in push notifications

推荐答案

对于Swift，如果你想要你可以试试此框架

For Swift, If you want you can try with this framework

另外添加content-available ：你的aps中有1个

Also Add "content-available":1 in your aps

或者你可以尝试这样下载，

OR you can try downloading like this,

override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {

            self.contentHandler = contentHandler
            bestAttemptContent = (request.content.mutableCopy() as?UNMutableNotificationContent)

            bestAttemptContent?.title = request.content.title
            bestAttemptContent?.body = request.content.body

            guard let content = (request.content.mutableCopy() as? UNMutableNotificationContent) else {
                return failEarly()
            }

            guard let payload = content.userInfo["CustomData"] as? [String: Any] else {
                return failEarly()
            }

            guard let attachmentURL = payload["Attachement-url"] as? String else {
                return failEarly()
            }


            let identifierName = getIdentifierName(fileURL: attachmentURL)
            let tmpSubFolderName = ProcessInfo.processInfo.globallyUniqueString

            guard let imageData = NSData(contentsOf:NSURL(string: attachmentURL)! as URL) else { return failEarly() }

            guard let attachment = UNNotificationAttachment.create(imageFileIdentifier: identifierName, data: imageData, options: nil, tmpSubFolderName: tmpSubFolderName) else { return failEarly() }

            content.attachments = [attachment]
            contentHandler(content.copy() as! UNNotificationContent)
        }

    }


    func getIdentifierName(fileURL : String) -> String {
        var identifierName : String = "image.jpg"

        if !fileURL.isEmpty() {
            identifierName = "file.\((fileURL as NSString).lastPathComponent)"
        }

        return identifierName
    }

    func failEarly() {

        if let contentHandler = contentHandler, let bestAttemptContent =  bestAttemptContent {
            contentHandler(bestAttemptContent)
        }
    }

    extension UNNotificationAttachment {
        static func create(imageFileIdentifier: String, data: NSData, options: [NSObject : AnyObject]?, tmpSubFolderName : String) -> UNNotificationAttachment? {

            let fileManager = FileManager.default
            let tmpSubFolderName = ProcessInfo.processInfo.globallyUniqueString
            let fileURLPath      = NSURL(fileURLWithPath: NSTemporaryDirectory())
            let tmpSubFolderURL  = fileURLPath.appendingPathComponent(tmpSubFolderName, isDirectory: true)

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

            return nil
        }
    }

这篇关于iOS推送通知中的图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！