I'm trying to rewrite a Swift code to Swift 6 language mode and am stuck with this problem. How do I safely pass the bestAttemptContent and contentHandler to the Task? This is from the UNNotificationServiceExtension subclass.
final class NotificationService: UNNotificationServiceExtension {
var contentHandler: ((UNNotificationContent) -> Void)?
var bestAttemptContent: UNMutableNotificationContent?
var customNotificationTask: Task<Void, Error>?
override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
self.contentHandler = contentHandler
bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
guard let bestAttemptContent = bestAttemptContent else {
invokeContentHandler(with: request.content)
return
}
do {
let notificationModel = try PushNotificationUserInfo(data: request.content.userInfo)
guard let templatedImageUrl = notificationModel.templatedImageUrlString,
let imageUrl = imageUrl(from: templatedImageUrl) else {
invokeContentHandler(with: bestAttemptContent)
return
}
setupCustomNotificationTask(
imageUrl: imageUrl,
bestAttemptContent: bestAttemptContent,
contentHandler: contentHandler
)
} catch {
invokeContentHandler(with: bestAttemptContent)
}
}
// More code
private func downloadImageTask(
imageUrl: URL,
bestAttemptContent: UNMutableNotificationContent,
contentHandler: @escaping (UNNotificationContent) -> Void
) {
self.customNotificationTask = Task {
let (location, _) = try await URLSession.shared.download(from: imageUrl)
let desiredLocation = URL(fileURLWithPath: "\(location.path)\(imageUrl.lastPathComponent)")
try FileManager.default.moveItem(at: location, to: desiredLocation)
let attachment = try UNNotificationAttachment(identifier: imageUrl.absoluteString, url: desiredLocation, options: nil)
bestAttemptContent.attachments = [attachment]
contentHandler(bestAttemptContent)
}
}
}
I tried using the MainActor.run {}, but it just moved the error to that run function.
The UNNotificationRequest is not sendable, and I don't think I can make it so.
Wrap the setupCustomNotification in a Task will move the errors to the didReceive method.
It seems like the consuming keyword will help here, but it leads to a compilation error, even with the latest Xcode (16.2).
Any pointers?
Selecting any option will automatically load the page