使用UITableViewCell实现聊天气泡的更好方法

Question

您好我正在尝试使用没有GitHub库的自定义聊天气泡。

我有5个swift文件。

1. 自定义UILabel

2. MyBubble为UITableViewCell + xib

3. SomeoneBubble为UITableViewCell + xib

4. TableViewController。

这是我的UILabel.swift

import UIKit

@IBDesignable class ChattingBubble: UILabel {

    @IBInspectable var topInset: CGFloat = 10.0
    @IBInspectable var bottomInset: CGFloat = 10.0
    @IBInspectable var leftInset: CGFloat = 16.0
    @IBInspectable var rightInset: CGFloat = 16.0

    @IBInspectable var radius: CGFloat = 10
    @IBInspectable var borderWidth: CGFloat = 0

    @IBInspectable var borderColor: UIColor? {
        didSet {
            layer.borderColor = borderColor?.cgColor
        }
    }

    override func drawText(in rect: CGRect) {
        let insets = UIEdgeInsets(top: topInset, left: leftInset, bottom: bottomInset, right: rightInset)
        super.drawText(in: UIEdgeInsetsInsetRect(rect, insets))


        self.layer.cornerRadius = radius
        self.layer.masksToBounds = true

        self.layer.borderWidth = borderWidth



    }

    override var intrinsicContentSize : CGSize {
        var intrinsicSuperViewContentSize = super.intrinsicContentSize
        intrinsicSuperViewContentSize.height += topInset + bottomInset
        intrinsicSuperViewContentSize.width += leftInset + rightInset
        return intrinsicSuperViewContentSize
    }

}

这是myBubble：UITableViewCell

class MyBubbleCell: UITableViewCell {

    @IBOutlet weak var bubbleLbl: ChattingBubble!
    @IBOutlet weak var eventLbl: UILabel!

    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code


        self.backgroundColor = UIColor(red: 242.0 / 255.0, green: 242.0 / 255.0, blue: 242.0 / 255.0, alpha: 1)
    }

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)

        // Configure the view for the selected state
    }

}

tutorial by Dave Peticolas

我认为看起来不错但我的问题是UITableViewController

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


        //define cell
        let myBubble = tableView.dequeueReusableCell(withIdentifier: "MyBubbleCell", for: indexPath) as! MyBubbleCell
        let someoneBubble = tableView.dequeueReusableCell(withIdentifier: "SomeoneBubbleCell", for: indexPath) as! SomeoneBubbleCell

        let object = results[indexPath.row]

            //My Bubble
            if object.isMyBubble == true {
//LastCell will be shown "Time Label"
                if indexPath.row != (results.count - 1){
                    myBubble.eventLbl.isHidden = true
                    myBubble.bubbleLbl.text = object.messageTxt

                }else {

                    myBubble.bubbleLbl.text = object.messageTxt

//This code means waiting for notification from server. It just shown when enter the message... immediately 
                    if object.messageId == nil {
                        myBubble.eventLbl.isHidden = true
                        myBubble.bubbleLbl.text = object.messageTxt
                        myBubble.bubbleLbl.textColor = UIColor(red: 0/255, green: 0/255, blue: 0/255, alpha: 0.5)

                    //When received from server then shown the text    
                    }else {

                        myBubble.eventLbl.isHidden = false
                        myBubble.bubbleLbl.text = object.messageTxt
                        UIView.transition(with: myBubble.bubbleLbl, duration: 0.6, options: .transitionCrossDissolve, animations: { myBubble.bubbleLbl.textColor = .black }, completion: nil)

                        myBubble.eventLbl.text = object.msgDate

                    }


                }

                return myBubble

            //Someone Bubble [I will update this code but It exactly same myBubble snippet]
            }else {



                return someoneBubble

            }




    }

我正在使用parse-server sdk。我的逻辑有两个UITableViewCell因为有不同的位置。一个是右侧，另一个是左侧。

所以tableView的功能应该检查我的泡泡是否。

它会影响滚动性能。

此外，我的代码有很多if语句来显示从currentUser输入的消息。

因为如果没有立即显示消息，那么用户必须等待响应，直到消息被保存到服务器中。

有人建议我吗？