Swift -Rich Notification Cuts Off Top and Bottom of Image - ios

Question

I'm using rich notifications to display a https url image in a push notification. The image is full screen. The problem is the rich notification displays the center of the image which cuts off the top and bottom of the image.
I tried to shrink the image before sending it, but it still gets cut off.
I tried to shrink the image when retrieving it and displaying it but it still gets cut off.
How can I get the entire image to fit inside the rich notification attachment?
override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: #escaping (UNNotificationContent) -> Void) {
self.contentHandler = contentHandler
bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
func failEarly() {
contentHandler(request.content)
}
guard let bestAttemptContent = bestAttemptContent else { failEarly(); return }
guard let attachmentUrlString = request.content.userInfo["media-url"] as? String else { failEarly(): return }
guard let url = URL(string: attachmentUrlString) else { failEarly(); return }
URLSession.shared.downloadTask(with: url, completionHandler: { [weak self](tempLocation, response, error) -> Void in
if let error = error { return }
guard let location = tempLocation else { return }
guard let response = response else { return }
do {
let lastPathComponent = response.url?.lastPathComponent ?? ""
var attachmentID = UUID.init().uuidString + lastPathComponent
if response.suggestedFilename != nil {
attachmentID = UUID.init().uuidString + response.suggestedFilename!
}
let tempDict = NSTemporaryDirectory()
let tempFilePath = tempDict + attachmentID
try FileManager.default.moveItem(atPath: location.path, toPath: tempFilePath)
guard let image = UIImage(contentsOfFile: tempFilePath) else { return }
guard let resizedImage = NotificationService.resizeImage(image: image, newWidth: 200) else { return } // I went all the way down to 25 and it was just a blurry image
guard let imageData = resizedImage.jpegData(compressionQuality: 1.0) else { return }
let fileURL = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true)
.appendingPathComponent("pkm", isDirectory: false)
.appendingPathExtension("jpg")
try imageData.write(to: fileURL)
let attachment = try UNNotificationAttachment.init(identifier: "pkm.jpg", url: fileURL, options: nil)
bestAttemptContent.attachments.append(attachment)
}
catch { return }
OperationQueue.main.addOperation({[weak self]() -> Void in
self?.contentHandler?(bestAttemptContent);
})
}).resume()
}
extension NotificationService {
static func resizeImage(image: UIImage, newWidth: CGFloat) -> UIImage? {
let scale = newWidth / image.size.width
let newHeight = image.size.height * scale
UIGraphicsBeginImageContext(CGSize(width: newWidth, height: newHeight))
image.draw(in: CGRect(x: 0, y: 0, width: newWidth, height: newHeight))
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage
}
}
rich notification with the top and bottom cut off (no head, no bottom foot):
an example of the image before the top and bottom were cut off (has head and feet):

Answer 1

I couldn't get the full image but I could get the top half of it by cropping it using this answer
override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: #escaping (UNNotificationContent) -> Void) {
self.contentHandler = contentHandler
bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
func failEarly() {
contentHandler(request.content)
}
guard let bestAttemptContent = bestAttemptContent else { failEarly(); return }
guard let attachmentUrlString = request.content.userInfo["media-url"] as? String else { failEarly(): return }
guard let url = URL(string: attachmentUrlString) else { failEarly(); return }
URLSession.shared.downloadTask(with: url, completionHandler: { [weak self](tempLocation, response, error) -> Void in
if let error = error { return }
guard let location = tempLocation else { return }
guard let response = response else { return }
do {
let lastPathComponent = response.url?.lastPathComponent ?? ""
var attachmentID = UUID.init().uuidString + lastPathComponent
if response.suggestedFilename != nil {
attachmentID = UUID.init().uuidString + response.suggestedFilename!
}
let tempDict = NSTemporaryDirectory()
let tempFilePath = tempDict + attachmentID
try FileManager.default.moveItem(atPath: location.path, toPath: tempFilePath)
guard let image = UIImage(contentsOfFile: tempFilePath) else { return }
let croppedImage = NotificationService.cropImageInHalf(image: image) // cropping occurs here
guard let imageData = croppedImage.jpegData(compressionQuality: 1.0) else { return }
let fileURL = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true)
.appendingPathComponent("pkm", isDirectory: false)
.appendingPathExtension("jpg")
try imageData.write(to: fileURL)
let attachment = try UNNotificationAttachment.init(identifier: "pkm.jpg", url: fileURL, options: nil)
bestAttemptContent.attachments.append(attachment)
}
catch { return }
OperationQueue.main.addOperation({[weak self]() -> Void in
self?.contentHandler?(bestAttemptContent);
})
}).resume()
}
extension NotificationService {
static func cropImageInHalf(image: UIImage) -> UIImage {
let height = CGFloat(image.size.height * 0.5)
let rect = CGRect(x: 0, y: 0, width: image.size.width, height: height)
return cropImage(image: image, toRect: rect)
}
static func cropImage(image:UIImage, toRect rect:CGRect) -> UIImage {
let imageRef:CGImage = image.cgImage!.cropping(to: rect)!
let croppedImage:UIImage = UIImage(cgImage:imageRef)
return croppedImage
}
}