iphone 6s

Question

我有2个项目，最近注意到滚动tableview并不顺利。它并不可怕，但不尽如人意。在iphone 4s上运行项目非常流畅。我的单元设置确实有2个图像和一个日期格式化程序，但它在4s上运行良好的事实令人困惑。有没有其他人遇到过这个问题。我已经在线查看，但没有找到任何解决方案。我曾尝试一次一件地拿出物品，但没有运气。

    var current : message
    var subject : String
    var body : String

    var status = "sent"
    if sentorreceived == "received" {
        status = Array.messages[indexPath.row].isread
        current = Array.messages[indexPath.row]

    } else {
        status = sentArray.messages[indexPath.row].isread
        current = sentArray.messages[indexPath.row]
    }

    let cell = tableView.dequeueReusableCellWithIdentifier("reuseIdentifier", forIndexPath: indexPath) as! inboxcell

    subject = current.subject
    body = current.body
    let thecorrectdate = self.datehelper(current.date)
    cell.bodyfield.text = body
    cell.subjectfield.text = subject
    cell.datefield.text = thecorrectdate
    cell.fromfield.text = current.from

    if current.messagetype == "PAGE" {
        cell.priority.hidden = false
    } else {
        cell.priority.hidden = true
    }
    if current.attachments.count == 0 {
        cell.paperclip.hidden = true
    } else {
        cell.paperclip.hidden = false
    }
    var status = "sent"
    if sentorreceived == "received" {
        status = Array.messages[indexPath.row].isread
    } else {
        status = ArraySent.messages[indexPath.row].isread
    }
    var imagestring : String?

    switch status {
        case "SENT":
        imagestring = "SentMessageiOSIcon"

        case "DELIVERED":
        imagestring = "DeliveredMessageiOSIcon"

        case "REPLIED":
        imagestring = "RepliedSentMessageiOSIcon"

        case "READ":
        imagestring = "ReadMessageSentiOSIcon"

        case "FAILED":
        imagestring = "FailedMessageiOSIcon"

        case "PAGEROFF":
        imagestring = "OffMessageiOSIcon"

        default:
        imagestring = "SentMessageiOSIcon"
    }

    if sentorreceived == "sent" {

        let theimage = UIImage(named: imagestring!)
        cell.envelope.contentMode = UIViewContentMode.ScaleAspectFit
        cell.envelope.clipsToBounds = true
        cell.envelope.image = theimage

    } else {

        if status == "DELIVERED" {
            let theimage = UIImage(named: "UnreadMessageiOSIcon")
            cell.envelope.contentMode = UIViewContentMode.ScaleAspectFit
            cell.envelope.clipsToBounds = true
            cell.envelope.image = theimage
        } else {
            let theimage = UIImage(named: "ReadMessageiOSIcon")
            cell.envelope.contentMode = UIViewContentMode.ScaleAspectFit
            cell.envelope.clipsToBounds = true
            cell.envelope.image = theimage
        }
    }
    return cell
}

Answer 1

原来，它与代码无关。我需要在手机上运行从9.0.2到9.1的更新。