ios - UITableViewCell在编辑模式下按减号后消失

Question

我有一个自定义 TableViewCell，其中包含一些标签、 slider 和播放按钮。如果没有音频文件，则单元格不可展开，并且 slider 和播放按钮不可见。但是，当有音频时，单元格会扩展以显示所有内容。

如果我进入编辑模式并按减号，它会按预期工作。

现在来解决这个问题。单元格滑过以显示删除按钮。如果我扩展和收缩单元格，然后按减号，它就会飞出屏幕。这是一个 gif，这样你就可以明白我的意思。

这是我实现的一些方法

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    let cell = tableView.cellForRowAtIndexPath(indexPath) as! HistoryTBCell
    cell.autoresizingMask = UIViewAutoresizing.FlexibleHeight
    cell.clipsToBounds = true
    tableView.beginUpdates()

    if cell.isExpandable == true {
        if toggle == 1 {
            selectedRow = indexPath
            toggle = 0
        } else {
            selectedRow = NSIndexPath(forRow: 1, inSection: 2)
            toggle = 1
        }
    }

    tableView.endUpdates()
}



override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
    if selectedRow == indexPath {
        return 120
    } else {
        return 60
    }
}

override func tableView(tableView: UITableView, editingStyleForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCellEditingStyle {
    if self.tableView.editing {
        return .Delete
    } else {
        return .None
    }
}

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! HistoryTBCell
    cell.selectionStyle = .None
    cell.clipsToBounds = true
    let hists = history[indexPath.row]

    let date = hists.valueForKey("currentDate") as! String
    let speechTime = hists.valueForKey("speechTime") as! String
    let actualTime = hists.valueForKey("actualTime") as! String
    let rec = hists.valueForKey("recURL") as! String

    cell.configure(date: date, speech: "Speech Time: \(speechTime)", actual: "Actual Time: \(actualTime)")

    if rec != "" {
        cell.setUpAudio(url: rec)
    }

    return cell
}

override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
    if editingStyle == .Delete {

        let alert = UIAlertController(title: "Delete", message: "Are you sure you want to delete?\nThe recording will also be deleted", preferredStyle: .ActionSheet)

        alert.addAction(UIAlertAction(title: "Delete", style: .Default, handler: { void in
            //let context = self.appDelegate?.managedObjectContext
            let fileManager = NSFileManager.defaultManager()
            let hists = self.history[indexPath.row]
            let rec = hists.valueForKey("recURL") as! String
            self.getContext().deleteObject(self.history[indexPath.row])
            self.history.removeAtIndex(indexPath.row)
            do {
                try self.getContext().save()
            } catch {
                print("Could not save")
            }
            tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
            do {
                let appended = rec
                let documentsDirectory = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0]
                let pathurl = documentsDirectory.URLByAppendingPathComponent(appended)
                try fileManager.removeItemAtPath(pathurl.path!)
            } catch {
                print("Could not remove item")
            }

        }))

        alert.addAction(UIAlertAction(title: "Cancel", style: .Cancel, handler: nil))

        presentViewController(alert, animated: true, completion: nil)
    }
}

override func tableView(tableView: UITableView, accessoryButtonTappedForRowWithIndexPath indexPath: NSIndexPath) {
    selectedRow = NSIndexPath(forRow: 1, inSection: 2)
}

我猜这与调整大小有关。如果需要，我可以发布更多代码。谢谢

Answer 1

我所要做的就是注释掉这一行:

cell.autoresizingMask = UIViewAutoresizing.FlexibleHeight