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ios - 如何创建带有大图像的苹果推送通知横幅

转载 作者:行者123 更新时间:2023-11-28 10:05:28 25 4
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如何在 iOS 中创建带有应用程序图标和大图像的通知横幅

最佳答案

操作系统设置

<强>1。创建通知服务扩展

在您的项目中,您必须创建一个服务扩展。服务扩展允许修改通知以包含富媒体。要添加通知服务扩展,请单击文件 > 新建 > 目标,然后选择通知服务扩展。

enter image description here

<强>2。设置通知服务扩展

由于 Notification Service Extension 有自己的 bundle id,它必须设置有自己的 App ID 和配置文件。请通过 Apple Developer Service 验证。

<强>3。将以下代码添加到通知服务扩展

虽然您可以在 Notification Service Extension 中自由实现您自己的方法,但您需要确保您的代码能够正确处理使用 Leanplum 发送的媒体。 Leanplum Payload 中与富媒体关联的键是:LP_URL。

Swift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";
}
}

}

<强>4。更新 [didReceiveRemoteNotification请确保更新应用程序实例方法 didReceiveRemoteNotification,以便它执行富媒体的下载。请参阅下面的简单示例。

swift -

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

<强>5。从我们的仪表板创建丰富的推送实现上述代码后,您可以自由地从我们的仪表板创建丰富的推送通知。在发送给用户之前,请务必在已注册的测试设备上进行试用。

Set a dynamic image for Rich push messages (beta)

启用丰富推送测试版功能后,您可以使用 Jinja 语法设置丰富推送图像,该图像会根据触发的推送通知的参数值发生变化。

创建新的推送通知消息。

使用新语法 Jinja 设置图像的 URL 以包含您的参数。

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

enter image description here

确保在参数名称周围使用方括号(参见上面的“dest_code”)。

3 。触发参数与您的图片 URL 匹配的事件的推送通知。

enter image description here

带参数的Android事件示例:

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

带参数的 iOS 事件示例:

Leanplum.track("flight_search", withParameters: ["dest_code": "Varna"])
  1. 在发送给用户之前在真实设备上测试您的新推送通知!

注意事项:

  1. 如果图片不存在,推送时不带图片。图片已在应用上解析,因此仍会发送推送,但图片 URL 不会返回图片。

  2. 如果事件中没有提供参数(本例中为“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 自定义失败,从而导致整个消息无法发送。

关于ios - 如何创建带有大图像的苹果推送通知横幅,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54663776/

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