CODEWITHSUNDEEP
iosswiftuiviewcontrollertableviewalamofire
Jacob
Jacob

Reputation: 121

passing data from tableview to viewContoller in swift

I have a tableview loads data from php json using Alamofire, it loads perfect on the tableview, now I tried to pass the data to a second viewController to show more details, I faced this error which says Cannot find the data in scope

func getUsers() {
    AF.request(SiteUrl).validate().responseJSON { response in
        switch response.result {
        case .success:
            print("Validation Successful)")

            if let json = response.data {
                do{
                    let jsonData = try JSON(data: json)
                    self.data = jsonData.arrayValue
                    self.tableView.reloadData() // we are already on the main thread
                    //print("DATA PARSED: \(jsonData)")
                }
                catch {
                    print("JSON Error", error)
                }
            }
        case .failure(let error):
            print(error)
        }
    }
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return data.count
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let customCell = tableView.dequeueReusableCell(withIdentifier: TableViewCell.identifier, for: indexPath) as! TableViewCell

    let item = data[indexPath.row]
    customCell.AdTitle?.text = item["title"].string
    customCell.AdDate?.text = item["time"].string

    let imageUrl = item["document"].string
    let url = NSURL(string:("https://qateef-ads.co/uploads/" + imageUrl!))
    customCell.AdImage.sd_setImage(with: url as URL?, placeholderImage: UIImage(named: "placeholder.png"))

    return customCell
}


func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
            
    let vc = storyboard?.instantiateViewController(withIdentifier: "DetailsViewController") as? DetailsViewController
    self.navigationController?.pushViewController(vc!, animated: true)
    vc?.imageView = UIImage(named: url)
    vc?.AdTitle = item["title"].string
}

how can I pass the data from to the second view?

Upvotes: 4

Views: 264

Answers (3)

Dishant Rajput
Dishant Rajput

Reputation: 1357

Ok

**

    if let json = response.data {
   let JSON22 = json as! NSDictionary
                            do{
                                let jsonData = try JSON(data: JSON22)
                                self.data = jsonData.arrayValue
                                self.tableView.reloadData() // we are already on the main thread
                                //print("DATA PARSED: \(jsonData)")
                            }
                            catch {
                                print("JSON Error", error)
                            }

**

If you want to pass your data from Controller1 to Controller2.

In Controller1

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)   {

         let item = data[indexPath.row]

         let vc = storyboard?.instantiateViewController(withIdentifier: "DetailsViewController") as? DetailsViewController
         vc!.dictGetData = item
         self.navigationController?.pushViewController(vc!, animated: true)
    }

In Controller2

Create a Dictionary variable

var dictGetData:NSDictionary!

then print dictionary on view did load

override func viewDidLoad() {
        super.viewDidLoad()

       print(dictGetData as Any)
}

Upvotes: 0

Jobert
Jobert

Reputation: 1652

I'm not sure I understood what exactly is your problem. But if you need to access that data on the second view controller, the simplest way would be to inject that data into the DetailsViewController you're instantiating when the cell is selected.
But first you need to create that property:

class DetailsViewController: UIViewController {
    var data: JSON?
    
    ...

}

Then when instantiating that view controller:

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
                
        guard let vc = storyboard?.instantiateViewController(withIdentifier: "DetailsViewController") as? DetailsViewController else { return }
        vc.data = data[indexPath.row]
        self.navigationController?.pushViewController(vc, animated: true)
    }

Now you can use that data on your DetailsViewController to pull any information you need from the json response:

class DetailsViewController: UIViewController {

    ...

    override viewDidLoad() {
        super.viewDidLoad()
        let title = data["title"]
        ...
    }

}

Upvotes: 1

musakokcen
musakokcen

Reputation: 394

You pass your alamofire result to "data" variable. Therefore, you should use "data" while passing the value to another VC. In your case, it could be like;

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    let vc = storyboard?.instantiateViewController(withIdentifier: "DetailsViewController") as? DetailsViewController
        vc?.imageView = UIImage(named: url)
        let item = data[indexPath.row]
        vc?.AdTitle = item["title"].string
        self.navigationController?.pushViewController(vc!, animated: true)

    }

Upvotes: 0

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