Tableview array is not loaded properly in iOS Swift? - ios

Question

I'm working in a chat application. Saving sender and receiver messages to firebase. My issue when tried to load array message to TableView, messages are not completely loaded. it shows gap for remaining messages.
MainChatViewController.swift
var messages = [Message]()
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return messages.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
print("message count::\(messages.count)")
let message = messages[indexPath.row]
if let cell = chatTableView.dequeueReusableCell(withIdentifier: "Message") as? mainChatScreenTableViewCell {
cell.tag = indexPath.row
cell.configCell(message: message)
return cell
} else {
return mainChatScreenTableViewCell()
}
}
func loadData() {
Database.database().reference().child("messages").child(messageId)
.observe(.value, with: { (snapshot) in
if let snapshot = snapshot.children.allObjects as? [DataSnapshot] {
self.messages.removeAll()
for data in snapshot {
if let postDict = data.value as? Dictionary<String, AnyObject>
{
let key = data.key
let post = Message(messageKey: key, postData: postDict)
self.messages.append(post)
}
}
}
self.chatTableView.reloadData()
})
}//loadData
func moveToBottom() {
DispatchQueue.main.async {
if self.messages.count > 0 {
let indexPath = IndexPath(row: self.messages.count - 1, section: 0)
self.chatTableView.scrollToRow(at: indexPath, at: .bottom, animated: false)
}
}
}
mainChatScreenTableViewCell
import UIKit
import SwiftKeychainWrapper
import Firebase
import FirebaseStorage
import FirebaseDatabase
class mainChatScreenTableViewCell: UITableViewCell {
#IBOutlet weak var recievedMessageLbl: UILabel!
#IBOutlet weak var recievedMessageView: UIView!
#IBOutlet weak var sentMessageLbl: UILabel!
#IBOutlet weak var sentMessageView: UIView!
#IBOutlet var receivedTimeLabel: UILabel!
#IBOutlet var sentTimeLabel: UILabel!
#IBOutlet var likeOrUnlikeImageView: UIImageView!
#IBOutlet var errorImageView: UIImageView!
#IBOutlet var checkImage: UIImageView!
var message: Message!
var currentUser = KeychainWrapper.standard.string(forKey: "uid")
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
sentMessageView.layer.masksToBounds = true
recievedMessageView.layer.masksToBounds = true
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
func configCell(message: Message) {
self.message = message
print("message label::\(message.message.count)")
if message.sender == currentUser {
let time = message.receivedTimeStamp
let timeinterval : TimeInterval = time
let dateFromServer = NSDate(timeIntervalSince1970:timeinterval)
let formatter = DateFormatter()
formatter.calendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.ISO8601) as Calendar?
formatter.locale = NSLocale(localeIdentifier: "en_IN") as Locale
formatter.timeZone = NSTimeZone(name: "GMT+5:30") as TimeZone?
formatter.dateFormat = "h:mm a"
formatter.amSymbol = "AM"
formatter.pmSymbol = "PM"
let dateString: String = formatter.string(from: dateFromServer as Date)
print("dateString:::\(dateString)")
sentMessageView.isHidden = false
sentMessageView.layer.backgroundColor = UIColor.clear.cgColor
sentMessageLbl.text = " " + message.message
sentTimeLabel.text = " " + dateString
recievedMessageLbl.text = ""
recievedMessageLbl.isHidden = true
recievedMessageView.isHidden = true
} else {
let time = message.receivedTimeStamp
let timeinterval : TimeInterval = time
let dateFromServer = NSDate(timeIntervalSince1970:timeinterval)
let formatter = DateFormatter()
formatter.calendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.ISO8601) as Calendar?
formatter.locale = NSLocale(localeIdentifier: "en_IN") as Locale
formatter.timeZone = NSTimeZone(name: "GMT+5:30") as TimeZone?
formatter.dateFormat = "h:mm a"
formatter.amSymbol = "AM"
formatter.pmSymbol = "PM"
let dateString: String = formatter.string(from: dateFromServer as Date)
print("dateString:::\(dateString)")
sentMessageView.isHidden = true
sentMessageLbl.isHidden = true
sentMessageLbl.text = ""
recievedMessageLbl.text = " " + message.message
receivedTimeLabel.text = " " + dateString
recievedMessageLbl.isHidden = false
recievedMessageView.layer.backgroundColor = UIColor.clear.cgColor
}
}
}
Here is my screenshot:
I'm getting correct message count but messages are fully loaded.
Any help much appreciated pls...

Answer 1

use it. heightForRowAt for height of cell but you must check your constraint.
and also use UITableViewDelegate to use it
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableView.automaticDimension
}