【发布时间】：2016-07-11 20:10:39
【问题描述】：
我目前正在为 iPhone 开发一个错误处理服务应用程序的项目。在我的应用程序中，我有一个表格视图，当用户从 Adobe reader 或其他地方共享文档并重新打开应用程序时，系统会提示他们使用附件视图来说明他们希望如何附加文件。他们可以将文件添加到表视图上的现有项目或创建新工单。如果用户选择将附件添加到现有项目，他们必须选择该选项，然后单击表格中他们想要添加附件的单元格。单击单元格时，应将另一个视图控制器添加到当前视图子视图中。我不展示它的原因是因为我的标签栏不会显示在展示的视图上，因为它不是标签栏项目。但是，当我单击单元格以附加文件时，出现致命错误：索引超出范围
func tableView(threadTableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let topic = thread[indexPath.row]
let selectedCell = threadTableView.cellForRowAtIndexPath(indexPath)
if(importFileMode) {
findChildrenOfParent(thread, childsIndex: indexPath.row)
let replyView = self.storyboard?.instantiateViewControllerWithIdentifier("replyView")
self.addChildViewController(replyView!)
self.view.addSubview(replyView!.view)
replyView!.didMoveToParentViewController(self)
}
else {
if(topic.canBeExpanded) {
if(topic.isExpanded) {
self.collapseCellsFromIndexOf(topic, indexPath: indexPath, threadTableView: threadTableView)
selectedCell?.accessoryView = self.viewForDisclosureForState(false)
}
else {
self.expandCellsFromIndexOf(topic, indexPath: indexPath, threadTableView: threadTableView)
selectedCell?.accessoryView = self.viewForDisclosureForState(true)
}
}
else {
// present the detailed view of entries
selectedEntryIndex = 0
findChildrenOfParent(thread, childsIndex: indexPath.row)
let entryDetailView = self.storyboard?.instantiateViewControllerWithIdentifier("EntryDetailScene")
self.addChildViewController(entryDetailView!)
self.view.addSubview(entryDetailView!.view)
entryDetailView!.didMoveToParentViewController(self)
}
}
}
错误恰好发生在
replyView!.didMoveToParentViewController(self)
奇怪的是，最后一个 else 语句中显示 entryDetailView 的代码运行良好。
这是我在加载时的回复 ViewController 并且确实出现了
override func viewDidLoad() {
super.viewDidLoad()
fileButtons = [attachmentButton1, attachmentButton2, attachmentButton3, attachmentButton4]
self.entryTopicLabel.text? = topicTitle
self.commentTextView.text? = entryList[selectedEntryIndex].etext!
replyTextView.layer.borderColor = textViewBorderColor.CGColor
replyTextView.layer.cornerRadius = 20
replyTextView.layer.borderWidth = 0.5
replyTextView.layer.masksToBounds = true
replyTextView.spellCheckingType = UITextSpellCheckingType.Yes
replyTextView.delegate = self
self.cancel = UIBarButtonItem(title: "Cancel ", style: .Plain, target: self, action: #selector(cancelReply))
self.cancel.tintColor = UIColor.whiteColor()
self.cancel.setTitleTextAttributes([
NSFontAttributeName: myFontNormal]
, forState: UIControlState.Normal)
self.navItems.rightBarButtonItem = self.cancel
self.navigationBar.items = [navItems]
attachmentButton1.hidden = true
attachmentButton2.hidden = true
attachmentButton3.hidden = true
attachmentButton4.hidden = true
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewDidDisappear(animated: Bool) {
filesToUpload.removeAll()
}
override func viewWillAppear(animated: Bool) {
if(haveImportedFile) {
attachImport()
}
}
func attachImport() {
let defaults = NSUserDefaults(suiteName: userDefaultsGroup)
let file = defaults?.objectForKey("file")
if(filesToUpload.count < 5) {
filesToUpload.append(file!)
}
else {
singleActionAlert(self, title: "Too Many Attachments", message: "You are only allowed a maximum of four file attachments.", action: "OK")
}
defaults?.setObject(nil, forKey: "file")
}
我已经在这个问题上停留了几个小时，所以任何帮助都将不胜感激！ :) 顺便说一句，使用 xcode 7.3 和 swift 2.2
【问题讨论】：
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另外，表格视图是自定义表格视图，因此单元格可以展开和折叠
标签： ios iphone uitableview uiviewcontroller swift2