__NSArrayM objectAtIndex:]: index 1 beyond bounds [0 .. 0] swift - uitableview

Question

I have error __NSArrayM objectAtIndex:]: index 1 beyond bounds [0 .. 0] when I try to add second item with the same date.
I can't find where is the issue. I think problem is in getSectionItems function.
Someone can help me?
#IBOutlet weak var tableView: UITableView!
#IBOutlet weak var sumLabel: UILabel!
var costItems: NSMutableArray = NSMutableArray()
var accountIdentifier: NSString = NSString()
var costsSum:Int!
var sectionsInTable = [String]()
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.delegate = self
self.tableView.dataSource = self
costsSum = getCostsSum()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewDidAppear(animated: Bool) {
loadData()
self.tableView.reloadData()
costsSum = getCostsSum()
}
func loadData() {
costItems.removeAllObjects()
let moc:NSManagedObjectContext = SwiftCoreDataHelper.managedObjectContext()
let predicate: NSPredicate = NSPredicate(format: "identifier == '\(accountIdentifier)'")!
let results:NSArray = SwiftCoreDataHelper.fetchEntities(NSStringFromClass(Cost), withPredicate: predicate, managedObjectContext: moc)
for cost in results{
let singleCost:Cost = cost as Cost
let costDict:NSDictionary = ["identifier":singleCost.identifier,"costName":singleCost.costName, "costValue":singleCost.costValue, "date":singleCost.date]
costItems.addObject(costDict)
// Date
let dateFormatter: NSDateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd MMMM"
let dateString: NSString = dateFormatter.stringFromDate(costDict.objectForKey("date") as NSDate)
let sections: NSSet = NSSet(array: sectionsInTable)
if !sections.containsObject(dateString) {
sectionsInTable.append(dateString)
}
}
self.tableView.reloadData()
}
func getSectionItems(section: Int) -> [Cost] {
var sectionItems = [Cost]()
let moc:NSManagedObjectContext = SwiftCoreDataHelper.managedObjectContext()
let predicate: NSPredicate = NSPredicate(format: "identifier == '\(accountIdentifier)'")!
let results:NSArray = SwiftCoreDataHelper.fetchEntities(NSStringFromClass(Cost), withPredicate: predicate, managedObjectContext: moc)
for cost in results {
let singleCost:Cost = cost as Cost
let costDict:NSDictionary = ["identifier":singleCost.identifier,"costName":singleCost.costName, "costValue":singleCost.costValue, "date":singleCost.date]
let dateFormatter: NSDateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd MMMM"
let dateString: NSString = dateFormatter.stringFromDate(costDict.objectForKey("date") as NSDate)
if dateString == sectionsInTable[section] as NSString {
sectionItems.append(singleCost)
}
}
return sectionItems
}
// UITableViewDataSource
func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return sectionsInTable[section]
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return sectionsInTable.count
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.getSectionItems(section).count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell:DetailTableViewCell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as DetailTableViewCell
let costDict:NSDictionary = costItems.objectAtIndex(indexPath.row) as NSDictionary
let costName = costDict.objectForKey("costName") as String
let costValue = costDict.objectForKey("costValue") as Double
cell.nazwaWydatkuLabel.text = costName
// Date
let dateFormatter: NSDateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "dd MMMM"
let dateString: NSString = dateFormatter.stringFromDate(costDict.objectForKey("date") as NSDate)
cell.dateLabel.text = dateString
if (Int(costValue)) < 0 {
cell.wartośćLabel.layer.cornerRadius = 8.0
cell.wartośćLabel.layer.masksToBounds = true
cell.wartośćLabel.backgroundColor = UIColor(red: 255.0/255.0, green: 59.0/255, blue: 48.0/255.0, alpha: 1.0)
} else {
cell.wartośćLabel.layer.cornerRadius = 8.0
cell.wartośćLabel.layer.masksToBounds = true
cell.wartośćLabel.backgroundColor = UIColor(red: 127.0/255.0, green: 207.0/255.0, blue: 77.0/255.0, alpha: 1.0)
}
cell.wartośćLabel.text = " \(Int(costValue)) zł "
return cell
}
#IBAction func addCostButtonPressed(sender: UIBarButtonItem) {
self.performSegueWithIdentifier("addCostVC", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "addCostVC" {
let addCostVC: AddTableViewController = segue.destinationViewController as AddTableViewController
let thisID = accountIdentifier
addCostVC.accountIdentifier = thisID
}
}
func getCostsSum() -> Int {
let moc:NSManagedObjectContext = SwiftCoreDataHelper.managedObjectContext()
let predicate: NSPredicate = NSPredicate(format: "identifier == '\(accountIdentifier)'")!
let results:NSArray = SwiftCoreDataHelper.fetchEntities(NSStringFromClass(Cost), withPredicate: predicate, managedObjectContext: moc)
var costSum: Int = 0
for res in results {
var costCount = res.valueForKey("costValue") as Int
costSum += costCount
}
self.sumLabel.text = "\(costSum) zł"
return costSum
}
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
let moc:NSManagedObjectContext = SwiftCoreDataHelper.managedObjectContext()
let results:NSArray = SwiftCoreDataHelper.fetchEntities(NSStringFromClass(Cost), withPredicate: nil, managedObjectContext: moc)
let thisCost: AnyObject = results.objectAtIndex(indexPath.row)
moc.deleteObject(thisCost as NSManagedObject)
//costsValues = getAccountCountSum()
SwiftCoreDataHelper.saveManagedObjectContext(moc)
loadData()
getCostsSum()
self.tableView.reloadData()
}