I have a Stack in my ViewController and I want to load a nib file(which contain a tableview) and add it to the stack. when I add it in viewDidLoad, there is no problem but when I put it in viewDidAppear app crash and got this error:
fatal error: unexpectedly found nil while unwrapping an Optional value
There are some UITableViewCell which I return them in cellForRowAt function based on row. It seems nib files are nil when they load and added in viewDidAppear!
Here is my code:
class MyOrdersViewController: UIViewController {
@IBOutlet weak var stack: UIStackView!
override func viewDidLoad() {
super.viewDidLoad()
//setCards()
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
setCards()
}
func setCards(){
let orderCard = NibLoader.loadViewFromNib(name: "MyOrdersView", selfInstance: self, nibType: MyOrdersView.self) as! MyOrdersView
stack.addArrangedSubview(orderCard)
}
}
class MyOrdersView: UIView,UITableViewDelegate,UITableViewDataSource {
@IBOutlet weak var tableView: UITableView!
@IBOutlet weak var seprator: UITableViewCell!
@IBOutlet weak var date: UILabel!
@IBOutlet weak var firstCell: UITableViewCell!
@IBOutlet weak var code: UILabel!
@IBOutlet weak var secondCell: UITableViewCell!
@IBOutlet weak var price: UILabel!
@IBOutlet weak var thirdCell: UITableViewCell!
@IBOutlet weak var orderStep: UILabel!
@IBOutlet weak var payModel: UILabel!
@IBOutlet weak var cancelBtn: UIButton!
@IBOutlet weak var fourthCell: UITableViewCell!
override func awakeFromNib() {
tableView.delegate = self
tableView.dataSource = self
UIFunctions.setBordersStyle(view: cancelBtn, radius: 5, width: 1, color: UIColor.red)
}
func setValue(order:Order){
self.date.text = order.order_date
self.code.text = String(describing: order.order_code ?? 0)
}
// MARK: - Table view data source
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 5
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell=UITableViewCell()
switch indexPath.row {
case 0:
cell = seprator
case 1:
cell = firstCell
cell.separatorInset = UIEdgeInsetsMake(0, 0, 0, 0)
case 2:
cell = secondCell
cell.separatorInset = UIEdgeInsetsMake(0, 0, 0, 0)
case 3:
cell = thirdCell
cell.separatorInset = UIEdgeInsetsMake(0, 0, 0, 0)
case 4:
cell = fourthCell
default:
break
}
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
var height = 0
switch indexPath.row {
case 0:
height = 25
case 4:
height = 70
default:
height = 50
}
return CGFloat(height)
}
}
