failed to obtain a cell from its dataSource with swift 3

Question

I have the below UITableViewController attached as a searchResultsController: ``` import UIKit import MapKit class LocationSearchTable : UITableViewController { var matchingItems:[MKMapItem] = [] var mapView: MKMapView? = nil override func viewDidLoad() { super.viewDidLoad() tableView.dataSource = self tableView.delegate = self } } extension LocationSearchTable : UISearchResultsUpdating { func updateSearchResults(for searchController: UISearchController){ guard let mapView = mapView, let searchBarText = searchController.searchBar.text else { return } let request = MKLocalSearchRequest() request.naturalLanguageQuery = searchBarText request.region = mapView.region let search = MKLocalSearch(request: request) search.start { response, _ in guard let response = response else { return } self.matchingItems = response.mapItems self.tableView.reloadData() } } } extension LocationSearchTable { override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { print(m…

Accepted Answer

The error

failed to obtain a cell from its dataSource

occurs because the signature of `cellForRowAtIndexPath` is wrong. In Swift 3 it's

```
(override) func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
```

and use the convenience method

```
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for:indexPath)
```

which returns always a valid non-optional cell.

PS: You don't need to set datasource and delegate to `self` because `UITableViewController` does that implicitly

failed to obtain a cell from its dataSource with swift 3

Solution

Problem