I am trying to create a configuration screen so that a user can set up the number of workouts he or she wants to do. I managed to add a tableview to a blank view controller but there were some stylistic limitation - such as expanding and collapsing the tableview according to the number of cells.
So I figured I would set up the screen in a tableviewcontroller. Now it's all going well, until I get to the point where I want my Stepper in section 0, cell 1, to increase and decrease the number of rows in section 1. It works to the extent that the data array (workouts[]) updates the view controller with the latest value (in the cellForRowAt:indexPath method) which in turn updates the numberOfRowsInSection with the (supposedly) latest workouts.count.
However, it turns out that workouts.count holds the count before the array was updated by the stepper last.
Now, I have tried a number of workaround but I still can't get the numberOfRowsInSection method to update properly - it seems to me that the Workouts array isn't updated in the View Controller with the latest value, rather the previous set value.
This is my view controller:
class AViewController: UITableViewController {
//MARK: Properties
@IBOutlet weak var aTableView: UITableView!
var sections: [String] = ["", "Set Up Circuits"]
var workouts: [Exercise] = []
//MARK: Initialisation
override func viewDidLoad() {
super.viewDidLoad()
workouts = [Exercise(name: "Circuit 1", timeMinutes: 2)]
self.tableView.delegate = self
self.tableView.dataSource = self
}
//MARK: Table Config
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return self.sections[section]
}
override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
switch section {
case 0:
return 0.1
default:
return 32.0
}
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
switch indexPath.section {
case 0:
return 60
default:
return 44
}
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
var numberOfRowsInSection: Int = 0
switch section {
case 0:
numberOfRowsInSection = 1
default:
numberOfRowsInSection = workouts.count
//numberOfRowsInSection = 1
}
print(numberOfRowsInSection, "number of rows in section", section)
return numberOfRowsInSection
}
//MARK: Table Protocols
override func numberOfSections(in tableView: UITableView) -> Int {
return sections.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
switch indexPath.section {
//Setting layout for circuit number config
case 0:
let cell = aTableView.dequeueReusableCell(withIdentifier: "ACircuitTableViewCell") as! ACircuitTableViewCell
cell.tableView = self.aTableView
self.workouts = cell.workouts
print(workouts.count, " VC workouts array count")
return cell
//Setting layout for circuit cells
default:
let cell = aTableView.dequeueReusableCell(withIdentifier: "ATableViewCell") as! ATableViewCell
cell.aLabel.text = workouts[indexPath.row].getName()
cell.aDetail.text = "Tap here to configure"
return cell
}
}
This is my ACircuitTableViewCell:
class ACircuitTableViewCell: UITableViewCell {
//MARK: Properties
@IBOutlet weak var circuitNumber: UILabel!
@IBOutlet weak var circuitLabel: UILabel!
@IBOutlet weak var circStepper: UIStepper!
var tableView: UITableView!
// var updateCallback : ((_ updateList: Bool)-> Void)?
//var exercises: [Exercise]?
var anArray: [Exercise] = []
var workouts: [Exercise] = [Exercise(name: "Circuit 1", timeMinutes: 2)]
var workoutsCount: Int = 1
var indexPath: NSIndexPath = NSIndexPath(row: 0, section: 1)
//MARK: Original Functions
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
circuitNumber.text = String(workouts.count)
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
@IBAction func valueChanged(_ sender: AnyObject) {
print("Method .valueChanged activated")
//Update circuitNumber label
circuitNumber.text = String(Int(circStepper.value))
//View pre-array-update status of variables
print(workouts.count, "anArray before appending")
print(circStepper.value, "stepper value before appending")
print(circuitNumber.text, "circuitNumber")
//Update workouts array
if workouts.count < Int(circStepper.value) {
workouts.append(Exercise(name: "Circuit \(Int(circStepper.value))", timeMinutes: 2))
print(workouts.count, "after appending")
tableView.reloadData()
print(workouts.count, "new workout.count")
}
print(workouts.count, "workouts.count")
print("Method .valueChanged completed")
}
This is the output to the console from when the app loads, to three taps on the stepper + button.
1 number of rows in section 1
1 number of rows in section 0
1 number of rows in section 1
1 number of rows in section 0
1 number of rows in section 1
1 number of rows in section 0
1 VC workouts array count
Method .valueChanged activated
1 anArray before appending
2.0 stepper value before appending
Optional("2") circuitNumber
2 after appending
1 number of rows in section 1
1 number of rows in section 0
2 new workout.count
2 workouts.count
Method .valueChanged completed
2 VC workouts array count
Method .valueChanged activated
2 anArray before appending
3.0 stepper value before appending
Optional("3") circuitNumber
3 after appending
2 number of rows in section 1
1 number of rows in section 0
3 new workout.count
3 workouts.count
Method .valueChanged completed
3 VC workouts array count
Method .valueChanged activated
3 anArray before appending
4.0 stepper value before appending
Optional("4") circuitNumber
4 after appending
3 number of rows in section 1
1 number of rows in section 0
4 new workout.count
4 workouts.count
Method .valueChanged completed
4 VC workouts array count
Method .valueChanged activated
4 anArray before appending
5.0 stepper value before appending
Optional("5") circuitNumber
5 after appending
4 number of rows in section 1
1 number of rows in section 0
5 new workout.count
5 workouts.count
Method .valueChanged completed
5 VC workouts array count
