向左或向右对齐UILabel

向左或向右对齐UILabel

我目前正在构建一个聊天应用,遇到了问题。每当我尝试根据向谁发送消息来向左或向右对齐UILabel时,它将不起作用。每次收到消息时,我都会重新加载TableView,但标签不会被更新。我正在使用swift 2.0。我还能尝试什么?还是有另一种方法可以做得更好?

//in cellForRowAtIndexPath
   if message == my own {
      //tried this
      cell.nameOfSender.frame.origin.y = 0
      cell.nameOfSender.frame.origin.x = widthOfScreen
      //And this
      cell.nameOfSender.center = CGPointMake(95,15)
} else{
      cell.nameOfSender.frame.origin.y = 0
      cell.nameOfSender.frame.origin.x = 0
      //And this
      cell.nameOfSender.center = CGPointMake(95,15)
}

最佳答案

您有两种方法,

首先是使用NSTextAlignment,因此您可以执行以下操作:

cell.lblTitle.textAlignment = .Left


第二个是为每种样式(左和右)创建不同的UITableViewCell子类

例如:

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let row = indexPath.row
    //ChatCell is a Subclass of UITableViewCell
    var cell:ChatCell
    // Just Random presenter getting the chat for the row
    let chat = presenter?.getChat(row)

    //Getting info whether the chat sender is me or not and the instances of each custom cells.
    if chat.sender == ChatSender.Me {
       cell = ChatCellSender(title: "Example")
    }else{
       cell = ChatCellReceiver(title: "Example")
    }
    return cell
}

09-05 06:01