How to display a multidimensional array under different sections in swift 3 - ios

Question

I have been trying to create multidimensional arrays and display each array under each section .. but I keep ending up with a fatal error index out of range . The code that i display below is how I access my firebase data and print each array from the database.. issue is I get the data I assign an array to it create it but can’t seem to display it due to the error . Hope someone helps for reference regarding the error I have attached a screenshot as well.
#IBOutlet weak var tableview: UITableView!
var yourArray = [String]()
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
var sundaycoursenamearray = [String]()
var sundaycoursecodearray = [String]()
var sundaycourselocationarray = [String]()
var sundayfromarray = [String]()
var sundaytoarray = [String]()
var mondaycoursenamearray = [String]()
var mondaycoursecodearray = [String]()
var mondaycourselocationarray = [String]()
var mondayfromarray = [String]()
var mondaytoarray = [String]()
var tuesdaycoursenamearray = [String]()
var tuesdaycoursecodearray = [String]()
var tuesdaycourselocationarray = [String]()
var tuesdayfromarray = [String]()
var tuesdaytoarray = [String]()
var wednesdaycoursenamearray = [String]()
var wednesdaycoursecodearray = [String]()
var wednesdaycourselocationarray = [String]()
var wednesdayfromarray = [String]()
var wednesdaytoarray = [String]()
var thursdaycoursenamearray = [String]()
var thursdaycoursecodearray = [String]()
var thursdaycourselocationarray = [String]()
var thursdayfromarray = [String]()
var thursdaytoarray = [String]()
var fridaycoursenamearray = [String]()
var fridaycoursecodearray = [String]()
var fridaycourselocationarray = [String]()
var fridayfromarray = [String]()
var fridaytoarray = [String]()
var saturdaycoursenamearray = [String]()
var saturdaycoursecodearray = [String]()
var saturdaycourselocationarray = [String]()
var saturdayfromarray = [String]()
var saturdaytoarray = [String]()
var coursecodes = [[String]]()
var coursenames = [[String]]()
var courselocations = [[String]]()
var fromtimes = [[String]]()
var totimes = [[String]]()
var days = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"]
override func viewWillAppear(_ animated: Bool) {
let uid = Auth.auth().currentUser?.uid
if(uid == nil){
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let nextviewController = storyboard.instantiateViewController(withIdentifier: "loginscreen")
//self.present(profileViewController, animated: true, completion: nil)
self.present(nextviewController, animated: true, completion: nil)
}
for j in days {
for i in 1 ..< 10 {
let ref1 = Database.database().reference().child("users").child((uid)!).child("courses").child(j).child(String(i))
ref1.observeSingleEvent(of: .value, with: { snapshot in
if let dictionary = snapshot.value as? [String: AnyObject] {
// print(dictionary)
if j == "Sunday" {
if let points = dictionary["coursname"] as? String {
self.sundaycoursecodearray.append(points)
print(self.sundaycoursecodearray)
}
if let points1 = dictionary["coursecode"] as? String {
self.sundaycoursenamearray.append(points1)
print(self.sundaycoursenamearray)
}
if let points1 = dictionary["courseroomlocation"] as? String {
self.sundaycourselocationarray.append(points1)
print(self.sundaycourselocationarray)
}
if let points1 = dictionary["fromtime"] as? String {
self.sundayfromarray.append(points1)
print(self.sundayfromarray)
}
if let points1 = dictionary["totime"] as? String {
self.sundaytoarray.append(points1)
print(self.sundaytoarray)
}
}
if j == "Monday" {
if let points = dictionary["coursname"] as? String {
self.mondaycoursecodearray.append(points)
print(self.mondaycoursecodearray)
}
if let points1 = dictionary["coursecode"] as? String {
self.mondaycoursenamearray.append(points1)
print(self.mondaycoursenamearray)
}
if let points1 = dictionary["courseroomlocation"] as? String {
self.mondaycourselocationarray.append(points1)
print(self.mondaycourselocationarray)
}
if let points1 = dictionary["fromtime"] as? String {
self.mondayfromarray.append(points1)
print(self.mondayfromarray)
}
if let points1 = dictionary["totime"] as? String {
self.mondaytoarray.append(points1)
print(self.mondaytoarray)
}
}
if j == "Tuesday" {
if let points = dictionary["coursname"] as? String {
self.tuesdaycoursecodearray.append(points)
print(self.tuesdaycoursecodearray)
}
if let points1 = dictionary["coursecode"] as? String {
self.tuesdaycoursenamearray.append(points1)
print(self.tuesdaycoursenamearray)
}
if let points1 = dictionary["courseroomlocation"] as? String {
self.tuesdaycourselocationarray.append(points1)
print(self.tuesdaycourselocationarray)
}
if let points1 = dictionary["fromtime"] as? String {
self.tuesdayfromarray.append(points1)
print(self.tuesdayfromarray)
}
if let points1 = dictionary["totime"] as? String {
self.tuesdaytoarray.append(points1)
print(self.tuesdaytoarray)
}
}
if j == "Wednesday" {
if let points = dictionary["coursname"] as? String {
self.wednesdaycoursecodearray.append(points)
print(self.wednesdaycoursecodearray)
}
if let points1 = dictionary["coursecode"] as? String {
self.wednesdaycoursenamearray.append(points1)
print(self.wednesdaycoursenamearray)
}
if let points1 = dictionary["courseroomlocation"] as? String {
self.wednesdaycourselocationarray.append(points1)
print(self.wednesdaycourselocationarray)
}
if let points1 = dictionary["fromtime"] as? String {
self.wednesdayfromarray.append(points1)
print(self.wednesdayfromarray)
}
if let points1 = dictionary["totime"] as? String {
self.wednesdaytoarray.append(points1)
print(self.wednesdaytoarray)
}
}
if j == "Thursday" {
if let points = dictionary["coursname"] as? String {
self.thursdaycoursecodearray.append(points)
print(self.thursdaycoursecodearray)
}
if let points1 = dictionary["coursecode"] as? String {
self.thursdaycoursenamearray.append(points1)
print(self.thursdaycoursenamearray)
}
if let points1 = dictionary["courseroomlocation"] as? String {
self.thursdaycourselocationarray.append(points1)
print(self.thursdaycourselocationarray)
}
if let points1 = dictionary["fromtime"] as? String {
self.thursdayfromarray.append(points1)
print(self.thursdayfromarray)
}
if let points1 = dictionary["totime"] as? String {
self.thursdaytoarray.append(points1)
print(self.thursdaytoarray)
}
}
if j == "Friday" {
if let points = dictionary["coursname"] as? String {
self.fridaycoursecodearray.append(points)
print(self.fridaycoursecodearray)
}
if let points1 = dictionary["coursecode"] as? String {
self.fridaycoursenamearray.append(points1)
print(self.fridaycoursenamearray)
}
if let points1 = dictionary["courseroomlocation"] as? String {
self.fridaycourselocationarray.append(points1)
print(self.fridaycourselocationarray)
}
if let points1 = dictionary["fromtime"] as? String {
self.fridayfromarray.append(points1)
print(self.fridayfromarray)
}
if let points1 = dictionary["totime"] as? String {
self.fridaytoarray.append(points1)
print(self.fridaytoarray)
}
}
if j == "Saturday" {
if let points = dictionary["coursname"] as? String {
self.saturdaycoursecodearray.append(points)
print(self.saturdaycoursecodearray)
}
if let points1 = dictionary["coursecode"] as? String {
self.saturdaycoursenamearray.append(points1)
print(self.saturdaycoursenamearray)
}
if let points1 = dictionary["courseroomlocation"] as? String {
self.saturdaycourselocationarray.append(points1)
print(self.saturdaycourselocationarray)
}
if let points1 = dictionary["fromtime"] as? String {
self.saturdayfromarray.append(points1)
print(self.saturdayfromarray)
}
if let points1 = dictionary["totime"] as? String {
self.saturdaytoarray.append(points1)
print(self.saturdaytoarray)
}
}
self.coursecodes.append(self.sundaycoursenamearray)
self.coursecodes.append(self.mondaycoursenamearray)
self.coursecodes.append(self.tuesdaycoursenamearray)
self.coursecodes.append(self.wednesdaycoursenamearray)
self.coursecodes.append(self.thursdaycoursenamearray)
self.coursecodes.append(self.fridaycoursenamearray)
self.coursecodes.append(self.saturdaycoursenamearray)
self.coursenames.append(self.sundaycoursecodearray)
self.coursenames.append(self.mondaycoursecodearray)
self.coursenames.append(self.tuesdaycoursecodearray)
self.coursenames.append(self.wednesdaycoursecodearray)
self.coursenames.append(self.thursdaycoursecodearray)
self.coursenames.append(self.fridaycoursecodearray)
self.coursenames.append(self.saturdaycoursecodearray)
self.courselocations.append(self.sundaycourselocationarray)
self.courselocations.append(self.mondaycourselocationarray)
self.courselocations.append(self.tuesdaycourselocationarray)
self.courselocations.append(self.wednesdaycourselocationarray)
self.courselocations.append(self.thursdaycourselocationarray)
self.courselocations.append(self.fridaycourselocationarray)
self.courselocations.append(self.saturdaycourselocationarray)
self.fromtimes.append(self.sundayfromarray)
self.fromtimes.append(self.mondayfromarray)
self.fromtimes.append(self.tuesdayfromarray)
self.fromtimes.append(self.wednesdayfromarray)
self.fromtimes.append(self.thursdayfromarray)
self.fromtimes.append(self.fridayfromarray)
self.fromtimes.append(self.saturdayfromarray)
self.totimes.append(self.sundaytoarray)
self.totimes.append(self.mondaytoarray)
self.totimes.append(self.tuesdaytoarray)
self.totimes.append(self.wednesdaytoarray)
self.totimes.append(self.thursdaytoarray)
self.totimes.append(self.fridaytoarray)
self.totimes.append(self.saturdaytoarray)
self.tableview.reloadData()
}
})
} }
super.viewWillAppear(animated)
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return days[section]
}
func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return days.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return coursenames[section].count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! homeTableViewCell
// Configure the cell...
// cell.classcode?.text = sundaycoursenamearray[indexPath.section]
cell.classcode?.text = coursenames[indexPath.section][indexPath.row]
return cell
}
/*
// Override to support conditional editing of the table view.
override func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
// Return false if you do not want the specified item to be editable.
return true
}
*/
/*
// Override to support editing the table view.
override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
// Delete the row from the data source
tableView.deleteRows(at: [indexPath], with: .fade)
} else if editingStyle == .insert {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
override func tableView(_ tableView: UITableView, moveRowAt fromIndexPath: IndexPath, to: IndexPath) {
}
*/
/*
// Override to support conditional rearranging of the table view.
override func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
// Return false if you do not want the item to be re-orderable.
return true
}
*/
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
override func viewDidLoad() {
super.viewDidLoad()
// 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()
}

Answer 1

You should create a model for your data then create arrays that include the model.
You can create a simple struct like so:
struct Course {
var name : String?
var code: String?
var location: String?
var toTime: String?
var fromTime: String?
}
After you create the model you can create an array that contains this type of struct.
Also for numberOfRowsInSection you don't have to use subscript. Just return:
return coursenames.count
That is why you get the error.