UITableView inside UIViewController

Question

I'm trying to use UITableView Inside UIViewController. However, when I tried to so it it gives me an error when I start the app. the error says "method doesnt override ant method from superclass"

import UIKit

class GPATableViewController: UIViewController,UITableViewDelegate,UITableViewDataSource {

    struct Objects {
        var sectionName : String!
        var sectionObjects : [String]!
    }

    var objectsArray = [Objects]()

    override func viewDidLoad() {
        super.viewDidLoad()

        objectsArray =
        [Objects(sectionName: "Section1" , sectionObjects: ["","",""]),
        Objects(sectionName: "Section2" , sectionObjects: ["","",""]),
        Objects(sectionName: "Section3" , sectionObjects: ["","",""])]
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as UITableViewCell!
      //  cell?.textLabel!.text = objectsArray[indexPath.section].sectionObjects[indexPath.row]

        print
        return cell!
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return objectsArray[section].sectionObjects.count
    }

    override func numberOfSections(in tableView: UITableView) -> Int {
        return objectsArray.count
    }

    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
            return objectsArray[section].sectionName
    }

}

Lou Franco · Accepted Answer · 2017-08-01 15:46:03Z

4

When you implement the UITableViewDatasource in an UIViewController, you are not overriding the methods.

Remove override from the methods that the compiler is tell you to.

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as UITableViewCell!
  //  cell?.textLabel!.text = objectsArray[indexPath.section].sectionObjects[indexPath.row]

    print
    return cell!
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return objectsArray[section].sectionObjects.count
}

func numberOfSections(in tableView: UITableView) -> Int {
    return objectsArray.count
}

func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        return objectsArray[section].sectionName
}

NOTE: If you were using a UITableViewController, then you would need the override, which is probably what was going on in whatever file you copied this from.

answered Aug 1, 2017 at 15:46

Lou Franco

89.4k14 gold badges137 silver badges199 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Nawaf Over a year ago

Thank you so much , your answer also very helpful. also the Note that you put is helpful.. thanks again !!

Paolo · Accepted Answer · 2017-08-01 15:47:48Z

2

Functions involving tableView such as numberOfSections(...), cellForRowAt etc. are not part of the UIViewController.

Instead, they belong to the UITableViewDelegate and UITableViewDataSource.

To fix your errors, remove the override keyword in front of these functions. You are not overriding them but instead "implementing" them at the request of the protocols.

Be sure to also set the view controller as the delegate and dataSource if you have not already done so in a Storyboard:

override func viewDidLoad()
    super.viewDidLoad()

    // other code...

    tableView.delegate = self
    tableView.dataSource = self

    // other code...
}

answered Aug 1, 2017 at 15:47

Paolo

3,9854 gold badges29 silver badges44 bronze badges

1 Comment

Nawaf Over a year ago

Thank you very much. your answer is very helpfull

Collectives™ on Stack Overflow

UITableView inside UIViewController

2 Answers 2

1 Comment

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related