Message Kit Message DataSoure Delegates not called - swift

Question

Using an older version of MessageKit, I made some changes to the library to get rid of the errors due to it being written in an older Swift version.
I integrated the Chat App into my own project, but the message text does not leave the message input bar when the send button is clicked.
Message.Swift File:
struct Message: MessageType {
let id: String?
let content: String
let sentDate: Date
let sender: SenderType
var kind: MessageKind {
if let image = image {
return .photo(image as! MediaItem)
} else {
return .text(content)
}
}
var messageId: String {
return id ?? UUID().uuidString
}
var image: UIImage? = nil
var downloadURL: URL? = nil
init(user: User, content: String) {
sender = Sender(id: user.uid, displayName: AppSettings.displayName)
self.content = content
sentDate = Date()
id = nil
}
init(user: User, image: UIImage) {
sender = Sender(id: user.uid, displayName: AppSettings.displayName)
self.image = image
content = ""
sentDate = Date()
id = nil
}
init?(document: QueryDocumentSnapshot) {
let data = document.data()
guard let sentDate = data["created"] as? Date else {
return nil
}
guard let senderID = data["senderID"] as? String else {
return nil
}
guard let senderName = data["senderName"] as? String else {
return nil
}
id = document.documentID
self.sentDate = sentDate
sender = Sender(id: senderID, displayName: senderName)
if let content = data["content"] as? String {
self.content = content
downloadURL = nil
} else if let urlString = data["url"] as? String, let url = URL(string: urlString) {
downloadURL = url
content = ""
} else {
return nil
}
}
}
extension Message: DatabaseRepresentation {
var representation: [String : Any] {
var rep: [String : Any] = [
"created": sentDate,
"senderID": sender.senderId,
"senderName": sender.displayName
]
if let url = downloadURL {
rep["url"] = url.absoluteString
} else {
rep["content"] = content
}
return rep
}
}
extension Message: Comparable {
static func == (lhs: Message, rhs: Message) -> Bool {
return lhs.id == rhs.id
}
static func < (lhs: Message, rhs: Message) -> Bool {
return lhs.sentDate < rhs.sentDate
}
}
ChatViewController:
private func save(_ message: Message) {
reference?.addDocument(data: message.representation) { error in
if let e = error {
print("Error sending message: \(e.localizedDescription)")
return
}
self.messagesCollectionView.scrollToBottom()
}
}
extension ChatViewController: MessagesLayoutDelegate {
func avatarSize(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGSize {
return .zero
}
func footerViewSize(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGSize {
return CGSize(width: 0, height: 8)
}
func heightForLocation(message: MessageType, at indexPath: IndexPath, with maxWidth: CGFloat, in messagesCollectionView: MessagesCollectionView) -> CGFloat {
return 0
}
}
extension ChatViewController: MessagesDataSource {
func currentSender() -> SenderType {
return Sender(id: user.uid, displayName: AppSettings.displayName)
}
func numberOfSections(in messagesCollectionView: MessagesCollectionView) -> Int {
return messages.count
}
func numberOfMessages(in messagesCollectionView: MessagesCollectionView) -> Int {
return messages.count
}
func messageForItem(at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> MessageType {
return messages[indexPath.section]
}
func cellTopLabelAttributedText(for message: MessageType, at indexPath: IndexPath) -> NSAttributedString? {
let name = message.sender.displayName
return NSAttributedString(
string: name,
attributes: [
.font: UIFont.preferredFont(forTextStyle: .caption1),
.foregroundColor: UIColor(white: 0.3, alpha: 1)
]
)
}
}
extension ChatViewController: MessageInputBarDelegate {
func messageInputBar(_ inputBar: MessageInputBar, didPressSendButtonWith text: String) {
let message = Message(user: user, content: text)
save(message)
inputBar.inputTextView.text = ""
}
my viewDidLoad():
override func viewDidLoad() {
super.viewDidLoad()
guard let id = channel.id else {
navigationController?.popViewController(animated: true)
return
}
reference = db.collection(["channels", id, "thread"].joined(separator: "/"))
messageListener = reference?.addSnapshotListener { querySnapshot, error in
guard let snapshot = querySnapshot else {
print("Error listening for channel updates: \(error?.localizedDescription ?? "No error")")
return
}
snapshot.documentChanges.forEach { change in
self.handleDocumentChange(change)
}
}
messageInputBar.delegate = self
messagesCollectionView.messagesDataSource = self
messagesCollectionView.messagesLayoutDelegate = self
messagesCollectionView.messagesDisplayDelegate = self
}

Answer 1

It seems, that your pod or carthage file use messageKit with latest version like "3.0.0". So, there is some changes in delegate.
Try to change this peace of code:
extension ChatViewController: MessageInputBarDelegate {
func messageInputBar(_ inputBar: MessageInputBar, didPressSendButtonWith text: String) {
let message = Message(user: user, content: text)
save(message)
inputBar.inputTextView.text = ""
}
with code below
extension ChatViewController: MessageInputBarDelegate {
func inputBar(_ inputBar: MessageInputBar, didPressSendButtonWith text: String) {
let message = Message(user: user, content: text)
save(message)
inputBar.inputTextView.text = ""
}
}
If you want to use your old syntax, set messageKit version to some old in your pod or carthage file.