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1.)如何在我的聊天中擴展消息,以便在不添加「.....」的情況下將tableView塊配置爲消息大小。TableView Chat擴展消息
2.)當我點擊發送消息上傳到數據庫但不是tableView直到我重新加載控制器?解決這個問題的最佳方法是什麼?
3.)載入表格視圖,以顯示底部張貼的最後一條消息?
我的tableView的圖片:
import UIKit
import Foundation
import Firebase
import FirebaseDatabase
import FirebaseStorage
struct postStruct {
let username : String!
let message : String!
let photoURL : String!
}
class GeneralChatroom: UIViewController, UITableViewDataSource, UITableViewDelegate {
@IBOutlet weak var messageTextField: UITextField!
var generalRoomDataArr = [postStruct]()
@IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
let ref = FIRDatabase.database().reference()
ref.child("general_room").queryOrderedByKey().observe(.childAdded, with: {snapshot in
let snapDict = snapshot.value as? NSDictionary
let username = snapDict?["Username"] as? String ?? ""
let message = snapDict?["Message"] as? String ?? ""
let firebaseUserPhotoURL = snapDict?["photo_url"] as? String ?? ""
self.generalRoomDataArr.insert(postStruct(username: username, message: message, photoURL: firebaseUserPhotoURL), at: 0)
self.tableView.reloadData()
})
}
@IBAction func backButtonPressed(_ sender: UIButton) {
self.performSegue(withIdentifier: "BackToRoom", sender: nil)
}
//Message Send button is pressed data uploaded to firebase
@IBAction func sendButtonPressed(_ sender: UIButton) {
let message : String = self.messageTextField.text!
UploadGeneralChatRoom(message: message) //update general_room
//self.tableView.reloadData()
//UploadUserData() //Update Rank in database
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return generalRoomDataArr.count // your number of cell here
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell")
let usernameLabel = cell?.viewWithTag(1) as! UILabel
usernameLabel.text = generalRoomDataArr[indexPath.row].username
let messageLabel = cell?.viewWithTag(2) as! UILabel
messageLabel.text = generalRoomDataArr[indexPath.row].message
let imageView = cell?.viewWithTag(3) as! UIImageView
//Make Porfile Image Cirlce
imageView.layer.cornerRadius = imageView.frame.size.width/2
imageView.clipsToBounds = true
//User Profile image in tableview
if generalRoomDataArr[indexPath.row].photoURL != nil
{
//let imageView = cell?.viewWithTag(3) as! UIImageView
if let url = NSURL(string: generalRoomDataArr[indexPath.row].photoURL) {
if let data = NSData(contentsOf: url as URL) {
imageView.image = UIImage(data: data as Data)
}
}
}
// your cell coding
return cell!
}
}
!你是最好的 – nil
當我設置numberOfLine = 0它仍然不會移動到下一行 – nil
它可能發生是由於分配固定的高度約束。 – Aashish