for loop only shows first item in array swift

I have a function called loadPosts that returns an array of Int values. Upon running it is used within the UITableView which has a function called setCell. Only the first item in the array is being used and then it repeats that value for the length of the array.

UPDATE 2: Here are the parameters within the hhmessages array: 1. senderusername 2. recipient 3. message text 4. ava image

UPDATED: now includes additional code in loadPosts function

func loadPosts()->[Int] {
    let me = user!["username"] as! String
    let uuid = messages["uuid"] as! String
    let url = URL(string: "http://localhost/message.php")!

    var request = URLRequest(url: url)

    request.httpMethod = "POST"

    let body = "username=\(me)&uuid=\(uuid)"
    request.httpBody = body.data(using: String.Encoding.utf8)

    URLSession.shared.dataTask(with: request) { data, response, error in

        DispatchQueue.main.async(execute: {

            if error == nil {

                do {

                    let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary

                    self.hhmessages.removeAll(keepingCapacity: false)
                    self.tableView.reloadData()

                    // declare new parseJSON to store json
                    guard let parseJSON = json else {
                        print("Error while parsing")
                        return
                    }

                    guard let messages = parseJSON["messages"] as? [AnyObject] else {
                        print("Error while parseJSONing")
                        return
                    }

                    self.hhmessages = messages
                    //print(self.hhmessages)

for i in 0 ..< self.hhmessages.count {
     if me == self.hhmessages[i]["senderusername"]!! as! String {
         self.incoming = [0]
 }
     if me == self.hhmessages[i]["recipient"]!! as! String {
         self.incoming = [1]
   }
}
self.tableView.reloadData()
return [Int()]
}

// UITableView

 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! ConversationCell

    func setCell(incoming: [Int]) {

        var layoutAttribute: NSLayoutAttribute
        var layoutConstant: CGFloat
        for i in 0 ..< self.incoming.count {

            if (self.incoming[i] == 1) {
                cell.bubbleImageView.image=#imageLiteral(resourceName: "chat_bubble_received")
            cell.messageLbl.textColor = UIColor.black
            layoutAttribute = .left
            layoutConstant = 10
            cell.contentView.addConstraint(NSLayoutConstraint(item: cell.bubbleImageView, attribute: layoutAttribute, relatedBy: .equal, toItem: cell.contentView, attribute: layoutAttribute, multiplier: 1, constant: layoutConstant))
        }
           if (self.incoming[i] == 0) {
                cell.bubbleImageView.image = #imageLiteral(resourceName: "chat_bubble_sent")
        cell.messageLbl.textColor = UIColor.white
            layoutAttribute = .right
            layoutConstant = -10
        cell.contentView.addConstraint(NSLayoutConstraint(item: cell.bubbleImageView, attribute: layoutAttribute, relatedBy: .equal, toItem: cell.contentView, attribute: layoutAttribute, multiplier: 1, constant: layoutConstant))

        }
        }
    }
    // get main queue to this block of code to communicate back
    DispatchQueue.main.async {

        tableView.transform = CGAffineTransform(rotationAngle: -CGFloat.pi)
        cell.transform = CGAffineTransform(rotationAngle: CGFloat.pi)
        setCell(incoming: self.incoming)

    }
    return cell
}