我收到以下错误，尝试设计首选项tableview。
2015-02-19 21:19:49.204 MyApp[8337:285561] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndex:]: index 1 beyond bounds [0 .. 0]'
*** First throw call stack:
(
0 CoreFoundation 0x0000000110859b95 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x00000001123aebb7 objc_exception_throw + 45
2 CoreFoundation 0x00000001107501fe -[__NSArrayI objectAtIndex:] + 190
3 UIKit 0x000000011161df2a -[UITableViewDataSource tableView:heightForHeaderInSection:] + 39
4 UIKit 0x00000001111f0e58 -[UITableView _delegateWantsHeaderForSection:] + 261
5 UIKit 0x000000011137b183 -[UISectionRowData refreshWithSection:tableView:tableViewRowData:] + 162
6 UIKit 0x0000000111381645 -[UITableViewRowData rectForFooterInSection:heightCanBeGuessed:] + 320
7 UIKit 0x000000011138173a -[UITableViewRowData heightForTable] + 56
8 UIKit 0x00000001111cd870 -[UITableView _updateContentSize] + 381
9 UIKit 0x00000001111ec5a3 -[UITableView setContentInset:] + 336
10 UIKit 0x000000011121e6ef -[UIViewController _setNavigationControllerContentInsetAdjustment:] + 501
11 UIKit 0x000000011eb19b89 -[UIViewControllerAccessibility _setNavigationControllerContentInsetAdjustment:] + 80
12 UIKit 0x00000001112541a6 -[UINavigationController _computeAndApplyScrollContentInsetDeltaForViewController:] + 432
13 UIKit 0x0000000111254323 -[UINavigationController _layoutViewController:] + 116
14 UIKit 0x0000000111254825 -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 216
15 UIKit 0x0000000111249957 -[UINavigationController _startCustomTransition:] + 1657
16 UIKit 0x000000011125567f -[UINavigationController _startDeferredTransitionIfNeeded:] + 386
17 UIKit 0x00000001112561ce -[UINavigationController __viewWillLayoutSubviews] + 43
18 UIKit 0x000000011139eded -[UILayoutContainerView layoutSubviews] + 202
19 UIKit 0x000000011eb3351e -[UILayoutContainerViewAccessibility layoutSubviews] + 43
20 UIKit 0x0000000111176040 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 521
21 QuartzCore 0x0000000114c2c38a -[CALayer layoutSublayers] + 146
22 QuartzCore 0x0000000114c20c46 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
23 QuartzCore 0x0000000114c20ab6 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
24 QuartzCore 0x0000000114b8cf1a _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 242
25 QuartzCore 0x0000000114b8e0a5 _ZN2CA11Transaction6commitEv + 447
26 QuartzCore 0x0000000114b8e73f _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 89
27 CoreFoundation 0x000000011078cd27 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
28 CoreFoundation 0x000000011078cc80 __CFRunLoopDoObservers + 368
29 CoreFoundation 0x0000000110782ab3 __CFRunLoopRun + 1123
30 CoreFoundation 0x00000001107823e6 CFRunLoopRunSpecific + 470
31 GraphicsServices 0x0000000114512a3e GSEventRunModal + 161
32 UIKit 0x00000001110f5b60 UIApplicationMain + 1282
33 MyApp 0x000000010fe687f7 main + 135
34 libdyld.dylib 0x0000000112b52145 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
我建议，tableView：heightForHeaderInSection中的某些东西搞砸了，但我无法猜测那里发生了什么。
以下是其他相关课程： PreferencesTableViewController
import UIKit
class PreferencesTableViewController: UITableViewController {
let factory = PreferencesCellFactory()
override func viewDidLoad() {
super.viewDidLoad()
factory.setTitleForSection(0, title: "Off")
factory.createSwitcherCell("Fallback-Modus", subtitle: "No-Subtitle")
factory.createEditorCell("Shortname", subtitle: "Shortname")
factory.setTitleForSection(1, title: "New")
//factory.createEditorCell("New Testcell", subtitle: "Hallo", section: 1)
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Potentially incomplete method implementation.
// Return the number of sections.
return factory.numberOfSections()
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete method implementation.
// Return the number of rows in the section.
return factory.numberOfRowsInSection(section)
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
return factory.getCellForSectionWithIndex(SectionNr: indexPath.section, index: indexPath.row) // returns correct cell
}
override func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return factory.getTitleForSection(SectioNr: section) // returns correct header
}
}
PreferencesCellFactory
import Foundation
class PreferencesCellFactory {
var sections : [[UITableViewPreferencesCell]]
var sectionTitles : [String]
init() {
sections = [[UITableViewPreferencesCell]]()
sectionTitles = [String]()
}
func numberOfSections() -> Int {
return sections.count
}
func numberOfRowsInSection(section: Int) -> Int{
return sections[section].count
}
func setTitleForSection(index: Int, title: String!){
if sectionTitles.count == index {
sectionTitles.append(title)
}
else {
sectionTitles[index] = title
}
}
func createEditorCell(title: String, subtitle: String){
createEditorCell(title, subtitle: subtitle, section: 0)
}
func createEditorCell(title: String, subtitle: String, section: Int){
if sections.count == section {
sections.append([UITableViewPreferencesCell]())
}
let cell = UITableViewEditorCell()
cell.textLabel?.text = title
cell.detailTextLabel?.text = subtitle
sections[section].append(cell)
println("Test")
}
func createSwitcherCell(title: String, subtitle: String){
createSwitcherCell(title, subtitle: subtitle, section: 0)
}
func createSwitcherCell(title: String, subtitle: String, section: Int){
// Wenn noch keine Sections angelegt sind, muss erst eine initialisiert werden
if sections.count == 0 {
sections.append([UITableViewPreferencesCell]())
}
let cell = UITableViewSwitcherCell()
cell.textLabel?.text = title
cell.detailTextLabel?.text = subtitle
sections[section].append(cell)
}
func getCellAtIndex(index: Int) -> UITableViewPreferencesCell{
if sections.count == 0 {
NSLog("Sections Array ist leer")
}
return getCellForSectionWithIndex(SectionNr: 0, index: index)
}
func getCellForSectionWithIndex(SectionNr section: Int, index: Int) -> UITableViewPreferencesCell{
if sections.count == 0 {
NSLog("Sections Array ist leer")
}
return sections[section][index]
}
func getCells() -> [UITableViewPreferencesCell]{
if sections.count == 0 {
NSLog("Sections Array ist leer")
}
return getCellsForSection(SectionNr: 0)
}
func getCellsForSection(SectionNr section: Int) -> [UITableViewPreferencesCell]{
if sections.count == 0 {
NSLog("Sections Array ist leer")
}
return sections[section]
}
func getTitleForSection(SectioNr section: Int) -> String {
if sectionTitles.count == 0 {
NSLog("SectionTitles Array ist leer")
return "Not titles found"
}
return sectionTitles[section]
}
}
我希望任何人都可以提供帮助。如有必要，我可以提供更多细节。
提前致谢
P.S。：如果numberOfSectionsInTableView返回1.则不会发生错误
＃解决方案的第一步：
我添加了所有这些方法，现在它似乎按预期工作，但为什么我必须实现它们？
override func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 50.0
}
override func tableView(tableView: UITableView, estimatedHeightForHeaderInSection section: Int) -> CGFloat {
return 50.0
}
override func tableView(tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 50.0
}
override func tableView(tableView: UITableView, estimatedHeightForFooterInSection section: Int) -> CGFloat {
return 50.0
}
override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return 50.0
}
override func tableView(tableView: UITableView, indentationLevelForRowAtIndexPath indexPath: NSIndexPath) -> Int {
return 0
}
override func tableView(tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
return UIView()
}
override func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
return UIView()
}
答案 0 :(得分：1)
你在这部分的问题：
func getTitleForSection(SectioNr section: Int) -> String {
if sectionTitles.count == 0 {
NSLog("SectionTitles Array ist leer")
return "Not titles found"
}
return sectionTitles[section]
}
[__NSArrayI objectAtIndex:]中
因此，如果您sectionTitles数组有一个元素，并且您询问1-st，2-nd或更大的索引，那么您的应用程序将抛出异常（并且粉碎）。在执行sectionTitles[section] 之前，您应该检查此数组中的对象数
UPD：
我对您的代码有疑问：
sections中PreferencesCellFactory的{{1}}类型UITableViewPreferencesCell（当然是自定义类），但您为sections[section].append(cell)做了下标。你是否实现了它以及它的外观？
因为没有它我无法重现代码，如果我评论它，那么应用程序不会粉碎。
答案 1 :(得分：1)
问题是在桌面视图中使用静态单元格。这意味着，必须实施所有提到的方法。切换回动态单元可以毫无问题地解决问题。
如果使用静态单元格，则必须实现所有查看属性，如headerView等。