ios - 使用 let buttonPosition = sender.convertPoint(CGPointZero, toView : self. tableView) 点击时更改 TableViewCell 中 UIButton 的标题

Question

在这里，我从 Parse 检索了数据，并在 tableViewCell 中显示该数据。

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let myCell = tableView.dequeueReusableCellWithIdentifier("users", forIndexPath: indexPath) as! userListTableViewCell

    let userData:PFObject = self.data.objectAtIndex(indexPath.row) as! PFObject

    // Usernames and gender..

    myCell.fullName.text = userData.objectForKey("fullName") as! String!
    myCell.genderLabel.text = userData.objectForKey("gender") as! String!

    // Profile pictures..

    let profilePics = userData.objectForKey("profilePicture") as! PFFile
    profilePics.getDataInBackgroundWithBlock { (data, error) -> Void in

        if let downloadedImage = UIImage(data: data!) {

            myCell.dp.image = downloadedImage
        }

    }

    myCell.followButtton.addTarget(self, action: "followButtonTapped:", forControlEvents: UIControlEvents.TouchUpInside)



    return myCell
}

现在我已经申请了UIButton在UITableViewCell成功了，我通过这种方式很好地获得了坐标:

// IBActions..


func followButtonTapped(sender:AnyObject) {
    let buttonPosition = sender.convertPoint(CGPointZero, toView: self.tableView)
    let indexPath = self.tableView.indexPathForRowAtPoint(buttonPosition)
    if indexPath != nil {



        println(indexPath)


    }
}

现在，当用户点击任何按钮时，我想更改该按钮的标题。感谢您抽出时间......如果这是我问的基本问题，我很抱歉，我是初学者。

这就是点击按钮时我得到的结果..

<NSIndexPath: 0xc000000000000016> {length = 2, path = 0 - 0}
<NSIndexPath: 0xc000000000010016> {length = 2, path = 0 - 2}

我可以使用这个吗？

func followButtonTapped(sender:AnyObject) {
let buttonPosition = sender.convertPoint(CGPointZero, toView: self.tableView)
let indexPath = self.tableView.indexPathForRowAtPoint(buttonPosition)
if indexPath != nil {

    sender.setTitle("title", forState: UIControlState.Normal)

    println(indexPath)


   }
}

..我愿意接受任何类型的答案..任何更好的方法也会被接受..

Answer 1

func followButtonTapped(sender:AnyObject) {
    let buttonPosition = sender.convertPoint(CGPointZero, toView: self.tableView)
    let indexPath = self.tableView.indexPathForRowAtPoint(buttonPosition)
    if indexPath != nil {

        if let cell = tableView.cellForRowatindexPath(indexPath){
       cell.followButton.setTitle("input title here")
}


        println(indexPath)


    }
}