UIImagePickerController not initiating next function - swift

Question

I'm using Swift 5 and have integrated MessageKit into my app. Here's the expected functionality:
User selects the image via picker
uploadImage function is initiated
Image is uploaded and displayed
What's actually happening:
User selects the image via picker
Nothing happens from there.
I'm not getting a single error message. I've put in print statements to see if it's even entering the uploadImage() function but it's not kicking off. I've change the uipickerimagecontroller code to exact code in other places of my app that is working and even that's not kicking off the function. I know my code isn't pretty but I'm still learning (please don't judge lol). Can anyone help:
Variable setup
private var isSendingPhoto = true {
didSet {
DispatchQueue.main.async {
self.messageInputBar.leftStackViewItems.forEach { item in
item.inputBarAccessoryView?.isUserInteractionEnabled = !self.isSendingPhoto
}
}
}
}
ViewDidLoad
messagesCollectionView.messagesDataSource = self
messagesCollectionView.messagesLayoutDelegate = self
messageInputBar.delegate = self as? InputBarAccessoryViewDelegate
messagesCollectionView.messagesDisplayDelegate = self
title = "MaybeDrinks"
// 1
let cameraItem = InputBarButtonItem(type: .system)
cameraItem.tintColor = .primary
cameraItem.image = #imageLiteral(resourceName: "camera")
// 2
cameraItem.addTarget(
self,
action: #selector(cameraButtonPressed),
for: .primaryActionTriggered
)
cameraItem.setSize(CGSize(width: 60, height: 30), animated: false)
messageInputBar.leftStackView.alignment = .center
messageInputBar.setLeftStackViewWidthConstant(to: 50, animated: false)
messageInputBar.setStackViewItems([cameraItem], forStack: .left, animated: false) // 3
}
private func sendPhoto(_ image: UIImage) {
isSendingPhoto = true
uploadImage(image) { [weak self] url in
guard let `self` = self else {
return
}
self.isSendingPhoto = false
guard let url = url else {
return
}
var message = Message(messageuser: self.sender, image: image)
message.downloadURL = url
self.save(message)
self.messagesCollectionView.scrollToBottom()
}
}
func imagePickerController(_ picker: UIImagePickerController,
didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
picker.dismiss(animated: true, completion: nil)
// 1
if let asset = info[.phAsset] as? PHAsset {
let size = CGSize(width: 500, height: 500)
PHImageManager.default().requestImage(
for: asset,
targetSize: size,
contentMode: .aspectFit,
options: nil) { result, info in
print("I'm in image picker")
guard let image = result else {
return
}
self.sendPhoto(image)
}
// 2
} else if let image = info[.originalImage] as? UIImage {
sendPhoto(image)
}
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.dismiss(animated: true, completion: nil)
}
// MARK: - Actions
#objc private func cameraButtonPressed() {
let picker = UIImagePickerController()
picker.delegate = self as? UIImagePickerControllerDelegate & UINavigationControllerDelegate
picker.allowsEditing = true
if UIImagePickerController.isSourceTypeAvailable(.camera) {
picker.sourceType = .camera
} else {
picker.sourceType = .photoLibrary
}
present(picker, animated: true, completion: nil)
}
Upload Image function
private func uploadImage(_ image: UIImage, completion: #escaping (URL?) -> Void) {
print("im in upload")
// STEP 1. Declare URL, Request and Params
let url = URL(string: "https://localhost/messagepost.php")!
// declaring reqeust with further configs
var request = URLRequest(url: url)
// POST - safest method of passing data to the server
request.httpMethod = "POST"
// values to be sent to the server under keys (e.g. ID, TYPE)
let params = ["sender_id": user_id, "uuid": uuid, "sender": me, "recipient_id": rid, "recipient": recipient, "puuid": puuid]
// body
let boundary = "Boundary-\(UUID().uuidString)"
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
// Compressing image and converting image to 'Data' type
guard let scaledImage = image.scaledToSafeUploadSize,
let data = scaledImage.jpegData(compressionQuality: 0.4) else {
return
}
// assigning full body to the request to be sent to the server
request.httpBody = createBodyWithParams(params, filePathKey: "file", imageDataKey: data, boundary: boundary)
print(request.httpBody as Any, "\(puuid).jpg")
URLSession.shared.dataTask(with: request) { (data, response, error) in
DispatchQueue.main.async {
// error occured
if error != nil {
Helper().showAlert(title: "Server Error", message: error!.localizedDescription, in: self)
return
}
do {
// save mode of casting any data
guard let data = data else {
Helper().showAlert(title: "Data Error", message: error!.localizedDescription, in: self)
return
}
// fetching JSON generated by the server - php file
let json = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as? NSDictionary
// save method of accessing json constant
guard let parsedJSON = json else {
return
}
// uploaded successfully
if parsedJSON["status"] as! String == "200" {
let newurl = parsedJSON["path"]
print("did you upload", newurl as Any)
print("did you upload", parsedJSON["message"] as Any)
self.isSendingPhoto = true
guard let url = newurl else {
return
}
//uploadImage(image)
var message = Message(messageuser: self.sender, image: image)
message.downloadURL = url as? URL
self.save(message)
self.messagesCollectionView.scrollToBottom()
} else {
// show the error message in AlertView
if parsedJSON["message"] != nil {
let message = parsedJSON["message"] as! String
Helper().showAlert(title: "Error", message: message, in: self)
print("where am i", parsedJSON["message"] as Any)
}
}
} catch {
Helper().showAlert(title: "JSON Error", message: error.localizedDescription, in: self)
print("where am i 2")
}
}
}.resume()
let imageName = [UUID().uuidString, String(Date().timeIntervalSince1970)].joined()
}
private func save(_ message: Message) {
self.messagesCollectionView.scrollToBottom()
}

Answer 1

Make sure your view controller declares conformance to both UIImagePickerControllerDelegate and UINavigationControllerDelegate in either the class declaration:
class DirectMessageViewController: MessagesViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
[...]
}
or in one or more extensions:
extension DirectMessageViewController: UIImagePickerControllerDelegate {
[...]
}
extension DirectMessageViewController: UINavigationControllerDelegate {
[...]
}