问题
Essentially, I have the following UITableViewController
that contains custom tableView cells with labels in them. When the cell is selected I would like the value of the cell to be passed to the next view controller where I am using it in an HTTP POST response.
What can be added to didSelectRowAt
to pass the value of the selected cell to the view controller presented?
Perhaps as a variable?
The following is my code:
import UIKit
class ScheduledCell: UITableViewCell {
@IBOutlet weak var ETALabel: UILabel!
@IBOutlet weak var cellStructure: UIView!
@IBOutlet weak var scheduledLabel: UILabel!
@IBOutlet weak var testingCell: UILabel!
@IBOutlet weak var pickupLabel: UILabel!
@IBOutlet weak var deliveryLabel: UILabel!
@IBOutlet weak var stopLabel: UILabel!
@IBOutlet weak var topBar: UIView!
}
class ToCustomerTableViewController: UITableViewController, UIGestureRecognizerDelegate {
var typeValue = String()
var driverName = UserDefaults.standard.string(forKey: "name")!
var structure = [AlreadyScheduledStructure]()
override func viewDidLoad() {
super.viewDidLoad()
fetchJSON()
//Disable delay in button tap
self.tableView.delaysContentTouches = false
tableView.tableFooterView = UIView()
}
private func fetchJSON() {
guard let url = URL(string: "https://example.com/example/example"),
let value = driverName.addingPercentEncoding(withAllowedCharacters: .urlQueryValueAllowed)
else { return }
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = "driverName=\(value)".data(using: .utf8)
URLSession.shared.dataTask(with: request) { data, _, error in
guard let data = data else { return }
do {
self.structure = try JSONDecoder().decode([AlreadyScheduledStructure].self,from:data)
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
catch {
print(error)
}
}.resume()
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return structure.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "scheduledID", for: indexPath) as! ScheduledCell
let portfolio = structure[indexPath.row]
cell.stopLabel.text = "Stop \(portfolio.stop_sequence)"
cell.testingCell.text = portfolio.customer
return cell
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let portfolio = structure[indexPath.row]
let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "scheduledDelivery")
print(portfolio.customer)
controller.navigationItem.title = navTitle
navigationController?.pushViewController(controller, animated: true)
}
override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 200.0
}
}
回答1:
add a portfolio variable to your next ViewController
class scheduledDeleivery: UIViewController{
var customer:String? //suposing this is customer type
then in override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let portfolio = structure[indexPath.row]
let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "scheduledDelivery") as! shcheduledDeleivery
controller.customer = porfolio.customer //here is the customer you need to pass to next viewcontroller
print(portfolio.customer)
controller.navigationItem.title = navTitle
navigationController?.pushViewController(controller, animated: true)
}
回答2:
Create public variables for the data which you want to pass to the scheduledDelivery controller.Then set them inside didselect
delegate method. Let say if you want to pass portfolio.customer
. Declare following public variable on scheduledDelivery controller.
public var portfilio:String?
Then set value to that variable from the didselect
method like this,
let portfolio = structure[indexPath.row]
let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "scheduledDelivery")
controller.portfilio = portfolio.customer
controller.navigationItem.title = navTitle
navigationController?.pushViewController(controller, animated: true)
回答3:
You can store the cell's data as a variable and then in prepare for segue function pass it to the other ViewController. If you call this in prepare for segue it will automatically do it every time you try to access that segue.
var nameOfVar : String = ""
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
var secondVC = segue.destination as! YourSecondViewController
secondVC.variable = nameOfVar
}
Hope I've helped :)
来源:https://stackoverflow.com/questions/56779146/how-pass-the-value-of-a-selected-cell-to-another-viewcontroller