在Swift中使用开关/ case函数中的数组
在Swift中使用开关/ case函数中的数组
提问于 2016-07-03 08:57:51
我正在尝试在我现有的应用程序中添加一个选择器视图。然而，我遇到了一个障碍。我仍然是Swift的新手，我不知道该如何描述这一点，但希望您能够充分理解下面的内容，提出适当的问题来解决这个问题。
我得到的错误消息是行中的“致命错误:超出范围的索引”：
cell.txtField_PickData.text = self.arrayTemprature[indexPath.row].valueForKey("tempValue") as? StringmyTitleArry等于两个输入“气温”或“水温”
下面是围绕此错误的代码部分。如果需要更多代码来帮助识别问题，则乐意提供：
import UIKit
class DiveDetailsViewController: UITableViewController, LocationDelegate, ItemDataSelectedProtocol, UITextFieldDelegate , UIPickerViewDataSource , UIPickerViewDelegate
{
let numberOfComponents: Int = 2
let temperatureComponentRows: Int = 131
let temperatureSymbolComponentRows: Int = 2
let Fahrenheit: String = "F"
let Celsius: String = "C"
let minDegrees = -10
let maxDegrees = 120
private var degrees = [Int]()
var temperature: Int = 26 // our default temperature
var temperatureType: String = "C" // our default type is Farenheit
// let myTitleArray = ["Air temperature" , "Water temperature"]
var pickerView : UIPickerView!
var pickerViewFarCel : UIPickerView!
var dictTemprature = [String : String]()
var arrayTemprature = [AnyObject]()
var tempIndex = 0
var tempSymbolIndex = 0
var arraySymbol = ["C" , "F"]
var tempratureOfAir : String = ""
var tempratureOfWater : String = ""
private typealias ItemDefaults = [ItemTypes : String]
private let NumberOfSections: Int = 7
private let NumberOfRowsInSection0: Int = 2
private let NumberOfRowsInSection1: Int = 7
private let NumberOfRowsInSection2: Int = 4
private let NumberOfRowsInSection3: Int = 6
private let NumberOfRowsInSection4: Int = 3
private let NumberOfRowsInSection5: Int = 4
private let NumberOfRowsInSection6: Int = 1
//
// Section 0 Cells
//
private let DiveNumberIndex: NSIndexPath = NSIndexPath(forRow: 0, inSection: 0)
private let DiveNameIndex: NSIndexPath = NSIndexPath(forRow: 1, inSection: 0)
// Section 1 Cells
private let DiveWaterIndex: NSIndexPath = NSIndexPath(forRow: 0, inSection: 1)
private let DiveVisibilityIndex: NSIndexPath = NSIndexPath(forRow: 1, inSection: 1)
private let DiveCurrentsIndex: NSIndexPath = NSIndexPath(forRow: 2, inSection: 1)
private let AirTempPickerIndex: NSIndexPath = NSIndexPath(forRow: 3, inSection: 1)
private let WaterTempPickerIndex: NSIndexPath = NSIndexPath(forRow: 4, inSection: 1)
private let DiveWeatherIndex: NSIndexPath = NSIndexPath(forRow: 5, inSection: 1)
private let DiveSurfaceIndex: NSIndexPath = NSIndexPath(forRow: 6, inSection: 1)
// Section 2 Cells
private let DiveLocationIndex: NSIndexPath = NSIndexPath(forRow: 0, inSection: 2)
private let DiveBodyOfWaterIndex: NSIndexPath = NSIndexPath(forRow: 1, inSection: 2)
private let DiveCityIndex: NSIndexPath = NSIndexPath(forRow: 2, inSection: 2)
private let DiveCountryIndex: NSIndexPath = NSIndexPath(forRow: 3, inSection: 2)
// Section 3 Cells
private let DiveCircuitIndex: NSIndexPath = NSIndexPath(forRow: 0, inSection: 3)
private let DiveStartingPressureIndex: NSIndexPath = NSIndexPath(forRow: 1, inSection: 3)
private let DiveEndingPressureIndex: NSIndexPath = NSIndexPath(forRow: 2, inSection: 3)
private let DiveWeightIndex: NSIndexPath = NSIndexPath(forRow: 3, inSection: 3)
private let DiveDiveSuitIndex: NSIndexPath = NSIndexPath(forRow: 4, inSection: 3)
private let DiveEquipmentIndex: NSIndexPath = NSIndexPath(forRow: 5, inSection: 3)
// Section 4 Cells
private let DiveEntryTypeIndex: NSIndexPath = NSIndexPath(forRow: 0, inSection: 4)
private let DiveDiveTypeIndex: NSIndexPath = NSIndexPath(forRow: 1, inSection: 4)
private let DiveRatingIndex: NSIndexPath = NSIndexPath(forRow: 2, inSection: 4)
// Section 5 Cells
private let DiveDiveMasterIndex: NSIndexPath = NSIndexPath(forRow: 0, inSection: 5)
private let DiveDiveBoatOperatorIndex: NSIndexPath = NSIndexPath(forRow: 1, inSection: 5)
private let DiveDiveCenterIndex: NSIndexPath = NSIndexPath(forRow: 2, inSection: 5)
private let DiveTripOperatorIndex: NSIndexPath = NSIndexPath(forRow: 3, inSection: 5)
// Section 6 Cells
private let DiveNotesIndex: NSIndexPath = NSIndexPath(forRow: 0, inSection: 6)
private let location: Location = Location()
private var isSelected: Bool = false
private var defaultValues: ItemDefaults = ItemDefaults()
private var selectedItemType: ItemTypes = ItemTypes.None
private var longitude: Double = 0.0
private var latitude: Double = 0.0
var diveModel: DiveModel = DiveModel()
override func viewDidLoad()
{
super.viewDidLoad()
// Array of the Degree :
for i in self.minDegrees ..< self.maxDegrees+1{
self.degrees.append(i)
}
print(self.degrees)
// Array of Table
self.dictTemprature = ["tempValue" : "" , "tempSymbol" : ""]
arrayTemprature = [self.dictTemprature , self.dictTemprature]
print(arrayTemprature)
print(self.arrayTemprature[0].valueForKey("tempValue"))
//
self.registerCustomTableViewCells()
self.defaultValues = self.getDefaultValues()
print(self.diveModel)
}
override func viewWillAppear(animated: Bool)
{
super.viewWillAppear(animated)
location.delegate = self
location.start()
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
var cell: UITableViewCell!
switch indexPath
{
case DiveNumberIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveNumberCell)
(cell as! DiveNumberTableViewCell).textField.placeholder = Strings.DiveNumber.localized
//I realize this will be autoentered, but needs to be displayed
case DiveNameIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveSiteCell)
(cell as! DiveSiteTableViewCell).textField.placeholder = Strings.Name.localized
//This will need to be the data entered from the previous screen and not editable
case AirTempPickerIndex:
let cell : AirTemperatureTableViewCell = tableView.dequeueReusableCellWithIdentifier("AirTemperatureCell", forIndexPath: indexPath) as! AirTemperatureTableViewCell
cell.txtField_PickData.tag = indexPath.row
cell.textField_TempSymbol.tag = indexPath.row
cell.txtField_PickData.placeholder = "Air"
cell.textField_TempSymbol.placeholder = ""
cell.txtField_PickData.text = self.arrayTemprature[indexPath.row].valueForKey("tempValue") as? String
cell.textField_TempSymbol.text = self.arrayTemprature[indexPath.row].valueForKey("tempSymbol") as? String
return cell
case WaterTempPickerIndex:
let cell : WaterTemperatureTableViewCell = tableView.dequeueReusableCellWithIdentifier("WaterTemperatureCell", forIndexPath: indexPath) as! WaterTemperatureTableViewCell
cell.txtField_PickData.tag = indexPath.row
cell.textField_TempSymbol.tag = indexPath.row
cell.txtField_PickData.placeholder = "Water"
cell.textField_TempSymbol.placeholder = ""
cell.txtField_PickData.text = self.arrayTemprature[indexPath.row].valueForKey("tempValue") as? String
cell.textField_TempSymbol.text = self.arrayTemprature[indexPath.row].valueForKey("tempSymbol") as? String
return cell
case DiveLocationIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.LocationCell)
cell.textLabel!.text = Strings.Location.localized
cell.detailTextLabel!.text = String(format: "%f, %f", self.latitude, self.longitude)
case DiveWeatherIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.Weather.localized
cell.detailTextLabel!.text = self.defaultValues[ItemTypes.Weather]
case DiveVisibilityIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.Visibility.localized
cell.detailTextLabel!.text = self.defaultValues[ItemTypes.Visibility]
case DiveEntryTypeIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.EntryType.localized
cell.detailTextLabel!.text = self.defaultValues[ItemTypes.EntryType]
case DiveWaterIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.Water.localized
cell.detailTextLabel!.text = self.defaultValues[ItemTypes.Water]
case DiveDiveSuitIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.DiveSuit.localized
cell.detailTextLabel!.text = self.defaultValues[ItemTypes.DiveSuit]
case DiveNotesIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveNoteCell)
case DiveRatingIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.Rating.localized
cell.detailTextLabel!.text = ""
case DiveCurrentsIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.Currents.localized
cell.detailTextLabel!.text = self.defaultValues[ItemTypes.Currents]
case DiveSurfaceIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.Surface.localized
cell.detailTextLabel!.text = self.defaultValues[ItemTypes.Surface]
case DiveBodyOfWaterIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.BodyOfWater.localized
cell.detailTextLabel!.text = ""
case DiveCityIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.City.localized
cell.detailTextLabel!.text = ""
case DiveCountryIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.Country.localized
cell.detailTextLabel!.text = ""
case DiveCircuitIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.Circuit.localized
cell.detailTextLabel!.text = self.defaultValues[ItemTypes.Circuit]
case DiveStartingPressureIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.StartingTankUsageCell)
(cell as! StartingTankUsageCell).startingPressureTextField.placeholder = Strings.Start.localized
case DiveEndingPressureIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.EndingTankUsageCell)
(cell as! EndingTankUsageCell).textField.placeholder = Strings.Finish.localized
case DiveDiveMasterIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.DiveMaster.localized
cell.detailTextLabel!.text = ""
case DiveWeightIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.WeightsCell)
(cell as! WeightsTableViewCell).textField.placeholder = Strings.Weight.localized
case DiveEquipmentIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.Equipment.localized
cell.detailTextLabel!.text = ""
case DiveDiveTypeIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.DiveType.localized
cell.detailTextLabel!.text = self.defaultValues[ItemTypes.DiveType]
case DiveDiveBoatOperatorIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.BoatOperator.localized
cell.detailTextLabel!.text = ""
case DiveDiveCenterIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.DiveCenter.localized
cell.detailTextLabel!.text = ""
case DiveTripOperatorIndex:
cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveItemCell)
cell.textLabel!.text = Strings.TripOperator.localized
cell.detailTextLabel!.text = ""
default:
cell = nil
}
return cell
}
override func numberOfSectionsInTableView(tableView: UITableView) -> Int
{
return self.NumberOfSections
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
if section == 0
{
return self.NumberOfRowsInSection0
}
else if section == 1
{
return self.NumberOfRowsInSection1
}
else if section == 2
{
return self.NumberOfRowsInSection2
}
else if section == 3
{
return self.NumberOfRowsInSection3
}
else if section == 4
{
return self.NumberOfRowsInSection4
}
else if section == 5
{
return self.NumberOfRowsInSection5
}
else if section == 6
{
return self.NumberOfRowsInSection6
}
else
{
return 0
}
}
override func tableView(tableView: UITableView, willSelectRowAtIndexPath indexPath: NSIndexPath) -> NSIndexPath?
{
//
// It the row that is going to be selected is of an item type, then we save off the
// selectedItemType so it can be used during the segue.
//
switch indexPath
{
case DiveWeatherIndex:
self.selectedItemType = ItemTypes.Weather
case DiveVisibilityIndex:
self.selectedItemType = ItemTypes.Visibility
case DiveEntryTypeIndex:
self.selectedItemType = ItemTypes.EntryType
case DiveWaterIndex:
self.selectedItemType = ItemTypes.Water
case DiveDiveSuitIndex:
self.selectedItemType = ItemTypes.DiveSuit
case DiveDiveTypeIndex:
self.selectedItemType = ItemTypes.DiveType
case DiveCurrentsIndex:
self.selectedItemType = ItemTypes.Currents
case DiveSurfaceIndex:
self.selectedItemType = ItemTypes.Surface
case DiveCircuitIndex:
self.selectedItemType = ItemTypes.Circuit
default:
self.selectedItemType = ItemTypes.None
}
return indexPath
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
{
let cell = tableView.cellForRowAtIndexPath(indexPath)
if cell is DiveEditTableViewCell
{
(cell as! DiveEditTableViewCell).textField.userInteractionEnabled = true
(cell as! DiveEditTableViewCell).textField.becomeFirstResponder()
}
else if cell is DiveNoteTableViewCell
{
(cell as! DiveNoteTableViewCell).textView.userInteractionEnabled = true
(cell as! DiveNoteTableViewCell).textView.becomeFirstResponder()
}
else if cell is StartingTankUsageCell
{
(cell as! StartingTankUsageCell).startingPressureTextField.userInteractionEnabled = true
(cell as! StartingTankUsageCell).startingPressureTextField.becomeFirstResponder()
}
else if cell is EndingTankUsageCell
{
(cell as! EndingTankUsageCell).textField.userInteractionEnabled = true
(cell as! EndingTankUsageCell).textField.becomeFirstResponder()
}
else if cell is WeightsTableViewCell
{
(cell as! WeightsTableViewCell).textField.userInteractionEnabled = true
(cell as! WeightsTableViewCell).textField.becomeFirstResponder()
}
}
override func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath)
{
let cell = tableView.cellForRowAtIndexPath(indexPath)
if cell is DiveEditTableViewCell
{
(cell as! DiveEditTableViewCell).textField.userInteractionEnabled = false
(cell as! DiveEditTableViewCell).textField.resignFirstResponder()
}
else if cell is DiveNoteTableViewCell
{
(cell as! DiveNoteTableViewCell).textView.userInteractionEnabled = false
(cell as! DiveNoteTableViewCell).textView.resignFirstResponder()
}
else if cell is StartingTankUsageCell
{
(cell as! StartingTankUsageCell).startingPressureTextField.userInteractionEnabled = false
(cell as! StartingTankUsageCell).startingPressureTextField.becomeFirstResponder()
}
else if cell is EndingTankUsageCell
{
(cell as! EndingTankUsageCell).textField.userInteractionEnabled = false
(cell as! EndingTankUsageCell).textField.becomeFirstResponder()
}
else if cell is WeightsTableViewCell
{
(cell as! WeightsTableViewCell).textField.userInteractionEnabled = false
(cell as! WeightsTableViewCell).textField.becomeFirstResponder()
}
}
override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat
{
var height = tableView.rowHeight
if indexPath == self.DiveNotesIndex
{
let cell = tableView.dequeueReusableCellWithIdentifier(Resource.DiveNoteCell)
height = CGFloat((cell?.bounds.size.height)!)
}
return height
}
func fahToCel(tempInF:Double) ->Double {
let celsius = (tempInF - 32.0) * (5.0/9.0)
return celsius as Double
}
func celToFah(tempInC:Double) ->Double {
let fahrenheit = (tempInC * 9.0/5.0) + 32.0
return fahrenheit as Double
}
func pickerFarCal(textField : UITextField){
self.tempSymbolIndex = 0
pickerViewFarCel = UIPickerView(frame:CGRectMake(0, 0, self.view.frame.size.width, 216))
pickerViewFarCel.delegate = self
pickerViewFarCel.dataSource = self
pickerViewFarCel.backgroundColor = UIColor.whiteColor()
textField.inputView = pickerViewFarCel
pickerViewFarCel.tag = textField.tag
let toolBar = UIToolbar()
toolBar.barStyle = .Default
toolBar.translucent = true
toolBar.tintColor = UIColor(red: 92/255, green: 216/255, blue: 255/255, alpha: 1)
toolBar.sizeToFit()
// Adds the buttons
let doneButton = UIBarButtonItem(title: "Done", style: .Plain, target: self, action: #selector(DiveDetailsViewController.doneClickSymbol))
let spaceButton = UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, target: nil, action: nil)
let cancelButton = UIBarButtonItem(title: "Cancel", style: .Plain, target: self, action: #selector(DiveDetailsViewController.cancelClickSymbol))
toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false)
toolBar.userInteractionEnabled = true
textField.inputAccessoryView = toolBar
}
func doneClickSymbol(){
self.view.endEditing(true)
print(self.arraySymbol[tempSymbolIndex])
if self.arrayTemprature[pickerViewFarCel.tag].valueForKey("tempValue") as! String == ""{
print("Not Convert")
}else if self.arrayTemprature[pickerViewFarCel.tag].valueForKey("tempSymbol") as! String == self.arraySymbol[tempSymbolIndex]{
print("Not Convert")
}else{
print("Convert")
if self.arraySymbol[tempSymbolIndex] == "C"{
let value = Double(self.arrayTemprature[pickerViewFarCel.tag].valueForKey("tempValue") as! String)
let convertedValue = self.fahToCel(value!)
let myValue = String(format: "%.1f", convertedValue)
self.dictTemprature["tempValue"] = myValue
self.dictTemprature["tempSymbol"] = self.arraySymbol[tempSymbolIndex]
}else{
let value = Double(self.arrayTemprature[pickerViewFarCel.tag].valueForKey("tempValue") as! String)
let convertedValue = self.celToFah(value!)
let myValue = String(format: "%.1f", convertedValue)
self.dictTemprature["tempValue"] = myValue
self.dictTemprature["tempSymbol"] = self.arraySymbol[tempSymbolIndex]
}
self.arrayTemprature[pickerViewFarCel.tag] = self.dictTemprature
tableView.reloadData()
}
}
func cancelClickSymbol(){
self.view.endEditing(true)
}
// PickerView
func pickerViewTemprature(textField : UITextField){
// Index
self.tempSymbolIndex = 0
self.tempIndex = 276
pickerView = UIPickerView(frame:CGRectMake(0, 0, self.view.frame.size.width, 216))
pickerView.delegate = self
pickerView.dataSource = self
pickerView.backgroundColor = UIColor.whiteColor()
textField.inputView = pickerView
pickerView.tag = textField.tag
pickerView.selectRow(276, inComponent: 0, animated: true)
let toolBar = UIToolbar()
toolBar.barStyle = .Default
toolBar.translucent = true
toolBar.tintColor = UIColor(red: 92/255, green: 216/255, blue: 255/255, alpha: 1)
toolBar.sizeToFit()
// Adds the buttons
let doneButton = UIBarButtonItem(title: "Done", style: .Plain, target: self, action: #selector(DiveDetailsViewController.doneClickMaterial))
let spaceButton = UIBarButtonItem(barButtonSystemItem: .FlexibleSpace, target: nil, action: nil)
let cancelButton = UIBarButtonItem(title: "Cancel", style: .Plain, target: self, action: #selector(DiveDetailsViewController.cancelClickMaterial))
toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false)
toolBar.userInteractionEnabled = true
textField.inputAccessoryView = toolBar
}
func doneClickMaterial(){
self.view.endEditing(true)
self.dictTemprature["tempValue"] = "\(self.degrees[tempIndex])"
self.dictTemprature["tempSymbol"] = self.arraySymbol[tempSymbolIndex]
self.arrayTemprature[pickerView.tag] = self.dictTemprature
self.tableView.reloadData()
}
func cancelClickMaterial(){
self.view.endEditing(true)
}
// MARK: delegate
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
if (pickerViewFarCel != nil){
return 1
}else{
return 2
}
}
func pickerView(pickerView: UIPickerView, widthForComponent component: Int) -> CGFloat{
return 100
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if (pickerViewFarCel != nil){
return self.temperatureSymbolComponentRows
}else{
if component == 0{
return self.degrees.count
}
else{
return self.temperatureSymbolComponentRows
}
}
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
if (pickerViewFarCel != nil){
return self.arraySymbol[row]
}else{
if component == 0 {
return "\(self.degrees[row])"
} else {
return self.arraySymbol[row]
}
}
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if (pickerViewFarCel != nil){
tempSymbolIndex = row
}else{
if component == 0 {
tempIndex = row
} else {
tempSymbolIndex = row
}
}
}更新:我删除了标题数组，简单地添加了另一个动态单元格，并将驱动这两个单元格的数据分开。
标题的“超出范围的索引”消失，但现在为行创建相同的错误：
cell.txtField\_PickData.text = self.arrayTemprature[indexPath.row].valueForKey("tempValue") as? String这个特性不需要额外的行，所以现在我想知道这个错误是否影响了数组收集数据的方式。
我已经添加了大部分代码。为了达到30k的限制，不得不减少一些。
回答 1
Stack Overflow用户
回答已采纳
发布于 2016-07-03 09:21:26
您的问题导致了错误的numberOfRowsInSection实现。
根据正式文件
告诉数据源返回表视图中给定部分中的行数。
请注意此方法，并进行所有必要的更改，以便为数据源带来所有可能的变体。
在这里您可以看到一个例子：
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if let count = self. myTitleArray?.count as Int {
return (count)
} else {
//myTitleArray is nil, so just return 0
return 0
}
}更新：(在对主要问题进行新编辑之后)
似乎有一个错误:第1节单元格有6个元素，但您必须声明：
private let NumberOfRowsInSection1: Int = 5有关您的问题的更多详细信息：
你的问题是典型的：“指数超出范围”，这意味着什么？您的数组，在本例中，self.arrayTemprature没有语句期间所需的索引，因此，例如，如果您有一个由3个元素组成的数组，并且请求第四个元素，这就是您将看到的错误。但是，当您不初始化数组并假装请求一个不存在的元素时，也会发生此错误(您的数组为0，您希望始终使用第4个元素:索引超出范围)。所以，从声明、初始化、使用断点开始检查self.arrayTemprature，并检查为什么会出现此错误。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/38168345
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