How to solve this error in Swift? - ios

Question

I'm getting the following error in console:
fatal error: unexpectedly found nil while unwrapping an Optional value
And showing error in Xcode editor like following:
THREAD 1 EXC_BAD_INSTRUCTION(code=EXC_I386_INVOP,subcode=0*0)
I have this code in Swift 3 for calling API and load it in view:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! TableViewCell
cell.nameLabel!.text = nameArray[indexPath.row]
cell.dobLabel!.text = dobArray[indexPath.row]
cell.descLabel!.text = descArray[indexPath.row]
/*
let imgURL = NSURL(string: imgURLArray[indexPath.row])
let data = NSData(contentsOf: (imgURLArray as? URL)!)
cell.imageView!.image = UIImage(data: data as! Data)
*/
return cell
}
And here is my TableViewCell file:
class TableViewCell: UITableViewCell {
#IBOutlet weak var nameLabel: UILabel?
#IBOutlet weak var descLabel: UILabel?
#IBOutlet weak var dobLabel: UILabel?
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}

Answer 1

try to modify you ApiViewController and check with my code then see what happen
import UIKit
class ApiViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
final let urlString = "http://microblogging.wingnity.com/JSONParsingTutorial/jsonActors"
var nameArray = [String]()
var dobArray = [String]()
var imgURLArray = [String]()
var descArray = [String]()
var actorarray = NSArray()
#IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
self.downloadJsonWithURL()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func downloadJsonWithURL() {
let url = NSURL(string: urlString)
URLSession.shared.dataTask(with: (url as? URL)!, completionHandler: {(data, response, error) -> Void in
if let jsonObj = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? NSDictionary {
print(jsonObj!.value(forKey: "actors")!)
actorarray = jsonObj!.value(forKey: "actors") as? NSArray
self.tableView.reloadData()
}
}).resume()
}
func downloadJsonWithTask(){
let url = NSURL(string:urlString)
var downloadTask = URLRequest(url: (url as? URL)!,cachePolicy:URLRequest.CachePolicy.reloadIgnoringCacheData,timeoutInterval:20)
downloadTask.httpMethod = "GET"
URLSession.shared.dataTask(with: downloadTask,completionHandler:{(data,response,error) -> Void in
let jsonData = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments)
print(jsonData!)
})
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return actorarray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! TableViewCell
let dic = self.actorarray[indexPath.row] as! NSDictionary
cell.nameLabel!.text = dic.object(forKey: "name") as! String
cell.dobLabel!.text = dic.object(forKey: "dob") as! String
cell.descLabel!.text = dic.object(forKey: "image") as! String
return cell
}
}