I'm trying to simulate a Chat Messages, and after insert some new cells, some of the oldest dissapear. And when I scroll appears again and disappear. I've tried all solutions that I found from here on SO but nothing works and I have not much idea frorm where error can come.
I'm not sure what code should I post to you tried to help, I will post my TableView code so maybe I'm doing something wrong or if you need anything else, just let me know.
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return UITableViewAutomaticDimension
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.messagesCell.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
return self.messagesCell[indexPath.row]
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let message = self.messages[indexPath.row]
if message.messageType == 2 {
output.setImageUrl(message.text)
router.navigateToGroupChatMessagesScene()
}
else {
self.view.endEditing(true)
}
}
This code is how I generate the cells everytime a new message is inserted:
func getMessageCell(withDisplayedMessage displayedMessage: GroupChatMessages.GetChatMessages.displayedChatMessage) -> GroupChatCell {
switch displayedMessage.messageType {
case 0:
if displayedMessage.sender == self.currentUser.userID {
let cell = self.messagesTableView.dequeueReusableCellWithIdentifier("senderCell") as! GroupChatCell
dispatch_async(dispatch_get_main_queue()) {
cell.configureCellText(withText: displayedMessage.text, andUtcSendTime: displayedMessage.utcSendTime)
cell.selectionStyle = UITableViewCellSelectionStyle.None
}
return cell
}
let cell = self.messagesTableView.dequeueReusableCellWithIdentifier("receiverCell") as! GroupChatCell
cell.configureCellAttributted(withText: displayedMessage.text, andSenderName: displayedMessage.senderName, andUtcSendTime: displayedMessage.utcSendTime)
cell.selectionStyle = UITableViewCellSelectionStyle.None
return cell
case 1:
let cell = self.messagesTableView.dequeueReusableCellWithIdentifier("announcementCell") as! GroupChatCell
dispatch_async(dispatch_get_main_queue()) {
cell.configureInformationCell(withText: displayedMessage.text)
cell.selectionStyle = UITableViewCellSelectionStyle.None
}
return cell
case 2:
if displayedMessage.sender == self.currentUser.userID {
let cell = self.messagesTableView.dequeueReusableCellWithIdentifier("senderImageCell") as! GroupChatCell
dispatch_async(dispatch_get_main_queue()) {
cell.configureSenderImageCell(withImageUrl: displayedMessage.text, andUtcSendTime: displayedMessage.utcSendTime)
cell.selectionStyle = UITableViewCellSelectionStyle.None
}
return cell
}
let cell = self.messagesTableView.dequeueReusableCellWithIdentifier("receiverImageCell") as! GroupChatCell
dispatch_async(dispatch_get_main_queue()) {
cell.configureImageCell(withImageUrl: displayedMessage.text, andSenderName: displayedMessage.senderName, andUtcSendTime: displayedMessage.utcSendTime)
cell.selectionStyle = UITableViewCellSelectionStyle.None
}
return cell
case 10: //SpecialCaseForSendingImages
let cell = self.messagesTableView.dequeueReusableCellWithIdentifier("senderImageCell") as! GroupChatCell
dispatch_async(dispatch_get_main_queue()) {
cell.configureSenderImageCell(withImageUrl: displayedMessage.text, andUtcSendTime: displayedMessage.utcSendTime)
cell.selectionStyle = UITableViewCellSelectionStyle.None
}
return cell
default:
return GroupChatCell()
}
Hope you can help, and any further information I will provide you as fast I can! Thank you so much.
EDIT:
Where I receive a new message I add a new row with message information in this function:
func displayMessages(viewModel: GroupChatMessages.GetChatMessages.ViewModel) {
let displayedMessage = viewModel.displayedMessages
print ("i'm here!")
if let messages = displayedMessage {
self.messages = messages
self.messagesCell = []
for index in 0..<messages.count {
let cell = self.getMessageCell(withDisplayedMessage: messages[index])
self.messagesCell.append(cell)
let indexPath = NSIndexPath(forRow: index, inSection: 0)
self.messagesTableView.insertRowsAtIndexPaths([indexPath], withRowAnimation: .Automatic)
}
print ("i'm here2!")
firstTime = false
// self.scrollToLastMessage(false)
self.setVisible(hiddenTableView: false, hiddenChatLoader: true)
self.messagesLoaded = true
}
}
dispatch_async
you should already be on the main thread. displayedMessage
). if
must have an else
when configuring a cell. Hope that helps.
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