Question

如何在iOS中创建带有应用图标和大图像的通知横幅

Answer 1

操作系统设置

1。创建通知服务扩展

在您的项目中，必须创建服务扩展。服务扩展允许修改通知以包括富媒体。要添加通知服务扩展，请点击文件>新建>目标，然后选择通知服务扩展。

2。设置Notification Service Extension

由于Notification Service Extension具有其自己的捆绑包ID，因此必须使用其自己的App ID和设置配置文件进行设置。请通过Apple Developer Service进行验证。

3。将以下代码添加到Notification Service Extension

尽管您可以在Notification Service Extension中自由实现自己的方法，但需要确保您的代码正确处理了随Leanplum发送的媒体。与Leanplum有效负载中的富媒体相关联的密钥是：LP_URL。

快捷代码-

class NotificationService: UNNotificationServiceExtension {

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

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

        // MARK: - Leanplum Rich Push
        if let bestAttemptContent = bestAttemptContent {
            let userInfo = request.content.userInfo;

            // LP_URL is the key that is used from Leanplum to
            // send the image URL in the payload.
            //
            // If there is no LP_URL in the payload than
            // the code will still show the push notification.
            if userInfo[imageKey] == nil {
                contentHandler(bestAttemptContent);
                return;
            }

            // If there is an image in the payload,
            // download and display the image.
            if let attachmentMedia = userInfo[imageKey] as? String {
                let mediaUrl = URL(string: attachmentMedia)
                let LPSession = URLSession(configuration: .default)
                LPSession.downloadTask(with: mediaUrl!, completionHandler: { temporaryLocation, response, error in
                    if let err = error {
                        print("Leanplum: Error with downloading rich push: \(String(describing: err.localizedDescription))")
                        contentHandler(bestAttemptContent);
                        return;
                    }

                    let fileType = self.determineType(fileType: (response?.mimeType)!)
                    let fileName = temporaryLocation?.lastPathComponent.appending(fileType)

                    let temporaryDirectory = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent(fileName!)

                    do {
                        try FileManager.default.moveItem(at: temporaryLocation!, to: temporaryDirectory)
                        let attachment = try UNNotificationAttachment(identifier: "", url: temporaryDirectory, options: nil)

                        bestAttemptContent.attachments = [attachment];
                        contentHandler(bestAttemptContent);
                        // The file should be removed automatically from temp
                        // Delete it manually if it is not
                        if FileManager.default.fileExists(atPath: temporaryDirectory.path) {
                            try FileManager.default.removeItem(at: temporaryDirectory)
                        }
                    } catch {
                        print("Leanplum: Error with the rich push attachment: \(error)")
                        contentHandler(bestAttemptContent);
                        return;
                    }
                }).resume()

            }
        }
    }

    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: - Leanplum Rich Push
    func determineType(fileType: String) -> String {
        // Determines the file type of the attachment to append to URL.
        if fileType == "image/jpeg" {
            return ".jpg";
        }
        if fileType == "image/gif" {
            return ".gif";
        }
        if fileType == "image/png" {
            return ".png";
        } else {
            return ".tmp";
        }
    }

}

4。更新[didReceiveRemoteNotification 请确保更新应用程序实例方法didReceiveRemoteNotification，以便它确实执行富媒体的下载。参见下面的简单示例。

快速-

func application(_ application: UIApplication,
                         didReceiveRemoteNotification userInfo: [AnyHashable : Any],
                         fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
        completionHandler(.newData)
}

5。从我们的信息中心创建丰富推送 实施上述代码后，您可以从我们的信息中心随意创建丰富的推送通知。发送给用户之前，请确保在注册的测试设备上进行尝试。

Set a dynamic image for Rich push messages (beta)

启用Rich-Push Beta功能后，您可以使用Jinja语法来设置丰富的推送图片，该图片会根据触发的推送通知的参数值而更改。

创建新的推送通知消息。

使用新的语法Jinja设置图片的URL，以包含您的参数。

https://myimages.com/destinations/cities/{{parameter['dest_code']}}.jpg

请确保在参数名称周围使用方括号（请参见上面的“目标代码”）。

3。在参数与您的图片网址匹配的事件上触发推送通知。

带有参数示例的Android事件

HashMap<String, Object> paramsFlight = new HashMap<String, Object>();
paramsFlight.put("dest_code", "Varna");
Leanplum.track("flight_search", paramsFlight);

带有参数示例的iOS事件：

Leanplum.track("flight_search", withParameters: ["dest_code": "Varna"])

在发送给用户之前，请在真实设备上测试新的推送通知！

注意事项：

如果图像不存在，则推送将不包含图像。图片已在应用上解析，因此仍会发送推送，但图片网址不会返回图片。
如果事件中未提供参数（此示例中为“ dest_code”），则不会发送推送。未能为事件提供正确的参数将导致Jinja定制失败，从而导致整个消息无法发送。

Answer 2

它称为“富视图通知”

您只需添加密钥即可将APNS转换为Richview。

“可变内容”：1， “类别：” richview“
您也可以出于测试目的而触发Local Richview。
您必须为此添加目标

1）通知内容扩展

2）服务扩展

以下是其工作原理的详细信息：

首先

import UserNotifications

要求用户允许推送通知

在您的override func viewDidLoad() {

中调用它

    requestPermissionsWithCompletionHandler { (granted) -> (Void) in

                DispatchQueue.main.async {
                    if granted {
                        UIApplication.shared.registerForRemoteNotifications()
                    }
                }
            }

这是请求许可的功能

private func requestPermissionsWithCompletionHandler(completion: ((Bool) -> (Void))? ) {

        UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .sound, .alert]) {[weak self] (granted, error) in

            guard error == nil else {

                completion?(false)
                return
            }

            if granted {

                UNUserNotificationCenter.current().delegate = self
                self?.setNotificationCategories() // set your action categories

            }

            completion?(granted)
        }
    }

您可以在此处设置类别

    private func setNotificationCategories() {

              let btnAction = UNNotificationAction(identifier: "action", title: "Press", options: [])
        let textInput = UNTextInputNotificationAction(identifier: "comment", title: "Comment", options: [])

        let actionCategory =  UNNotificationCategory(identifier: "actionCategory", actions: [btnAction,textInput], intentIdentifiers: [], options: [])

UNUserNotificationCenter.current().setNotificationCategories([lactionCategory])

        }

创建一个触发本地通知的功能

func sendNotification() -> Void {

    notificationBodyField.resignFirstResponder()

    let content = UNMutableNotificationContent()
    content.title = "Local Notifications"
    content.subtitle =  "Subtitle"

    if  let characters = notificationBodyField.text?.characters, let text = notificationBodyField.text , characters.count > 0 {

        content.body = text
    }
    else {
        content.body = notificationBodyString
    }

    content.categoryIdentifier = "local"


    let url = Bundle.main.url(forResource: "gm", withExtension: "jpg")
    // download your image and provide local URL here 

    let attachment = try! UNNotificationAttachment(identifier: "image", url: url!, options: [:])

    content.attachments = [attachment]

    let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 2, repeats: false)

    let request = UNNotificationRequest(identifier: "localNotification", content: content, trigger: trigger)

    UNUserNotificationCenter.current().add(request) {[weak self] (error) in

        guard error == nil else {

            return
        }
    }

}

在上面的代码之后，在您的override func viewDidLoad() {中调用此函数，您可以根据需要执行任何操作。

有关更多信息，请参阅

https://developer.apple.com/documentation/usernotifications

http://thecodeninja.tumblr.com/post/125772843855/notifications-in-ios-9-quick-inline-reply-for

我希望这会对您有所帮助：）

如何创建大图苹果推送通知横幅

2 个答案: