Trouble with multiple-sectioned TableView in Swift - ios

Question

I apologize in advance if this is confusing. I'm new to Swift with no prior experience and learning.
Basically, I have a UITableView that pulls its data form another viewController with four text fields. The data is saved and added to the tableView (only displaying the two of the fields in the cell). When the cell is selected it segues back to the viewController and adds the data in the appropriate text fields. This also utilized CoreData and NSFetchResultsController. All of this is working properly so far, just wanted to give a little back ground on whats going on.
The Problem...
I am trying to get the tableView to display the data in two sections. I want the first section (section 0) to display the data added to the list created by adding the text fields on the viewController. However, the tableView adds first row as the first section (with the header correct) and then adds the second row (and on) as the second section (section 1)(with section header). I want to add all new items from the viewController to section 0, leaving section 1 blank for when I figure out how to cross items off section 0 and move to section 1 by selecting the row (Coming in the future).
I am new to this site as well and could not figure out how to post my code. If anyone needs to look through it you may have to walk me through adding it. Also, I have trouble converting Objective C to Swift please keep that in mind while answering. Thank you!! and I apologize for being difficult.
(tableView Controller "SList")
class ShoppingList: UIViewController, NSFetchedResultsControllerDelegate, UITableViewDataSource, UITableViewDelegate {
let moc = (UIApplication.sharedApplication().delegate as! AppDelegate).managedObjectContext
var frc : NSFetchedResultsController = NSFetchedResultsController()
func itemFetchRequest() -> NSFetchRequest{
let fetchRequest = NSFetchRequest(entityName: "SList")
let primarySortDescription = NSSortDescriptor(key: "slitem", ascending: true)
let secondarySortDescription = NSSortDescriptor(key: "slcross", ascending: true)
fetchRequest.sortDescriptors = [primarySortDescription, secondarySortDescription]
return fetchRequest
}
func getFetchRequetController() ->NSFetchedResultsController{
frc = NSFetchedResultsController(fetchRequest: itemFetchRequest(), managedObjectContext: moc, sectionNameKeyPath: "slitem", cacheName: nil)
return frc
}
#IBOutlet weak var tableView: UITableView!
#IBAction func AddNew(sender: AnyObject) {
frc = getFetchRequetController()
frc.delegate = self
do {
try frc.performFetch()
} catch _ {
print("Failed to perform inital fetch.")
return
}
self.tableView.reloadData()
}
override func viewDidLoad() {
super.viewDidLoad()
frc = getFetchRequetController()
frc.delegate = self
do {
try frc.performFetch()
} catch _ {
print("Failed to perform inital fetch.")
return
}
self.tableView.reloadData()
//TableView Background Color
self.tableView.backgroundColor = UIColor.clearColor()
tableView.reloadData()
self.navigationItem.leftBarButtonItem = self.editButtonItem()
self.tableView.separatorColor = UIColor.blackColor()
}
override func viewDidDisappear(animated: Bool) {
frc = getFetchRequetController()
frc.delegate = self
do {
try frc.performFetch()
} catch _ {
print("Failed to perform inital fetch.")
return
}
self.tableView.reloadData()
}
//TableView Data
func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
let managedObject:NSManagedObject = frc.objectAtIndexPath(indexPath) as! NSManagedObject
moc.deleteObject(managedObject)
do {
try moc.save()
} catch _ {
print("Failed to save.")
return
}
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
let numberOfSections = frc.sections?.count
return numberOfSections!
}
//table section headers
func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String?{
let sectionHeader = "Items - #\(frc.sections![section].numberOfObjects)"
let sectionHeader1 = "Crossed Off Items - #\(frc.sections![section].numberOfObjects)"
if (section == 0) {
return sectionHeader
}
if (section == 1){
return sectionHeader1
}else{
return nil
}
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let numberOfRowsInSection = frc.sections?[section].numberOfObjects
return numberOfRowsInSection!
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath)
let items = frc.objectAtIndexPath(indexPath) as! SList
cell.backgroundColor = UIColor.clearColor()
cell.textLabel?.text = "\(items.slitem!) - Qty: \(items.slqty!)"
cell.textLabel?.font = UIFont.systemFontOfSize(23)
return cell
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func controllerDidChangeContent(controller: NSFetchedResultsController) {
tableView.reloadData()
}
//segue to add/edit
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if segue.identifier == "edit" {
let cell = sender as! UITableViewCell
let indexPath = tableView.indexPathForCell(cell)
let SListController:SLEdit = segue.destinationViewController as! SLEdit
let items:SList = frc.objectAtIndexPath(indexPath!) as! SList
SListController.item = items
}
}
}
(ViewController "SLEdit")
class SLEdit: UIViewController {
let moc = (UIApplication.sharedApplication().delegate as! AppDelegate).managedObjectContext
#IBOutlet weak var slitem: UITextField!
#IBOutlet weak var sldesc: UITextField!
#IBOutlet weak var slqty: UITextField!
#IBOutlet weak var slprice: UITextField!
var item: SList? = nil
override func viewDidLoad() {
super.viewDidLoad()
if item != nil{
slitem.text = item?.slitem
sldesc.text = item?.sldesc
slqty.text = item?.slqty
slprice.text = item?.slprice
}
// "x" Delete Feature
self.slitem.clearButtonMode = UITextFieldViewMode.WhileEditing
self.sldesc.clearButtonMode = UITextFieldViewMode.WhileEditing
self.slqty.clearButtonMode = UITextFieldViewMode.WhileEditing
self.slprice.clearButtonMode = UITextFieldViewMode.WhileEditing
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func dismissVC() {
navigationController?.popViewControllerAnimated(true)
}
#IBAction func saveButton(sender: AnyObject) {
if item != nil {
edititems()
} else {
createitems()
}
dismissVC()
}
func createitems() {
let entityDescription = NSEntityDescription.entityForName("SList", inManagedObjectContext: moc)
let item = SList(entity: entityDescription!, insertIntoManagedObjectContext: moc)
item.slitem = slitem.text
item.sldesc = sldesc.text
item.slqty = slqty.text
item.slprice = slprice.text
if slitem.text == nil{
createitems()
}else{
edititems()
}
do {
try moc.save()
} catch _ {
return
}
}
func edititems() {
item?.slitem = slitem.text!
item?.sldesc = sldesc.text!
item?.slqty = slqty.text!
item?.slprice = slprice.text!
do {
try moc.save()
} catch {
return
}
}
}

Answer 1

I think the problem lies in your FRC configuration:
frc = NSFetchedResultsController(fetchRequest: itemFetchRequest(), managedObjectContext: moc, sectionNameKeyPath: "slitem", cacheName: nil)
Because sectionNameKeyPath is slitem, the FRC creates a new section for each different value of slitem.
If the slcross attribute is used to indicate that the item has been crossed off the list, specify that as the sectionNameKeyPath:
frc = NSFetchedResultsController(fetchRequest: itemFetchRequest(), managedObjectContext: moc, sectionNameKeyPath: "slcross", cacheName: nil)
You will also need to modify the sorting of the fetch request (it MUST be sorted so that all items in a given section are together):
let primarySortDescription = NSSortDescriptor(key: "slcross", ascending: true)
let secondarySortDescription = NSSortDescriptor(key: "slitem", ascending: true)
fetchRequest.sortDescriptors = [primarySortDescription, secondarySortDescription]