问自定义UITableViewCell中快速可变数量的子视图

EN

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
    let cell = tableView.dequeueReusableCellWithIdentifier("newsFeedCell", forIndexPath: indexPath) as! NewsFeedCell
    cell.layoutIfNeeded()

    // Get the profile picture dimensions
    self.profPicWidthHeight = getProfilePictureDimensions(cell)

    // Reset all views in the friends subview
    for view in cell.friends.subviews {
        view.removeFromSuperview()
    }

    // Get all info to display in cell
    cell.eventTitle.text = self.eventNames[indexPath.section]
    cell.time.text = self.eventTimes[indexPath.section]
    cell.entityPicture.image = self.eventImages[indexPath.section]
    cell.entityName.text = self.eventSponserNames[indexPath.section]

    // If this user has joined this event, add his/her image to the array
    if (self.eventsUserJoined[indexPath.section]) {
        self.eventUserImages[indexPath.section].append(self.meImage)
    }

    // Set the scroll view content size
    cell.friends.contentSize = CGSizeMake(CGFloat(self.eventUserImages[indexPath.section].count + 2) * (self.profPicHorizontalOffset + self.profPicWidthHeight), cell.friends.frame.height)

    // Add profile images
    var i: CGFloat = 1
    for profPic in self.eventUserImages[indexPath.section] {
        cell.friends.addSubview(layoutProfilePicture(i, picture: profPic!, squareDimension: self.profPicWidthHeight))
        i++
    }