CODEWITHSUNDEEP
swiftuitableviewcore-dataswift3
mihai mimi
mihai mimi

Reputation: 133

Issues with setting up UITableView sections and rows using fetch request results array and a structure

I have some problems that require a solution which is beyond my knowledge unfortunately at the moment. I perform a fetch request that returns an array of Floors entity object which has 2 attributes (floor number and number of rooms). I want to make a table with the number of sections corresponding the num of floors and the num. of rows in each section corresponding to the number of rooms per floor. I use a struct and 2 for in loops to separate the attributes for the table. The result is baffling me: if i declare one floor it works and a picker in the next vc displays floor "0". If I assign 2 rooms to it I get a giant print response and a table with 10s of rows. Please have a look at the code below and the pictures provided and if someone could help I would be thankful.

class RoomAndAlarmTypeTableVC: UITableViewController, NSFetchedResultsControllerDelegate {

//MARK: - Properties

private var managedObjectContext: NSManagedObjectContext!

private var storedFloors = [Floors]()    

private var resultsArray = [Results]()

//MARK: - Actions

override func viewDidLoad() {
    super.viewDidLoad()
    managedObjectContext = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
    loadFloorData()
    tableView.delegate = self
    tableView.dataSource = self

}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

private func loadFloorData() {
    let floorRequest: NSFetchRequest<Floors> = Floors.fetchRequest()
    do {
        storedFloors = try managedObjectContext.fetch(floorRequest)
        //            tableView.reloadData()
        print("\(storedFloors)")

    } catch {
        print("could not load data from core \(error.localizedDescription)")
    }
}



// MARK: - Table view data source

override func numberOfSections(in tableView: UITableView) -> Int {
    return resultsArray.count
}

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return resultsArray[section].sectionObjects.count
}

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    let cell = tableView.dequeueReusableCell(withIdentifier: "house cell", for: indexPath) as! ViewRooomNumberCell

    cell.floorNumberTxt.text = String(storedFloors[indexPath.section].floorNumber)

    return cell
}

override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    return resultsArray[section].sectionName
}

}

[![enter image description here][1]][1]
[![enter image description here][2]][2]

Upvotes: 0

Views: 53

Answers (1)

Jon Rose
Jon Rose

Reputation: 8563

storedFloors is an array of managedObjects, which already has all the information that you need. The number of sections is storedFloors.count and the number of rows is storedFloors[sectionIndex].numberOfRooms. To build a cell the floor is storedFloors[indexPath.section].floorNumber and the room number is simply indexPath.row.

The other objects you created are wrong and confusing and should be removed.

Upvotes: 1

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