Basic TableView With Sections Template

Hook up the outlet and change the class name if needed.

Swift 3

 
class ViewController: UIViewController, UITableViewDataSource, 
        UITableViewDelegate {
    
    @IBOutlet weak var tableView: UITableView!
    let sections: [String] = ["Section 1", "Section 2", "Section 3"]
    let s1Data: [String] = ["Row 1", "Row 2", "Row 3"]
    let s2Data: [String] = ["Row 1", "Row 2", "Row 3"]
    let s3Data: [String] = ["Row 1", "Row 2", "Row 3"]
    
    var sectionData: [Int: [String]] = [:]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        tableView.delegate = self
        tableView.dataSource = self
        
        sectionData = [0:s1Data, 1:s2Data, 2:s3Data]
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) 
            -> Int {
        return (sectionData[section]?.count)!
    }
    
    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) 
            -> String? {
        return sections[section]
    }
    
    func numberOfSections(in tableView: UITableView) -> Int {
        return sections.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) 
            -> UITableViewCell {
        var cell = tableView.dequeueReusableCell(withIdentifier: "cell")
        
        if cell == nil {
            cell = UITableViewCell(style: .default, reuseIdentifier: "cell");
        }
        
        cell!.textLabel?.text = sectionData[indexPath.section]![indexPath.row]
        
        return cell!
    }
}
 

Swift 2

 
class SectionExampleVC: UIViewController, UITableViewDataSource, 
        UITableViewDelegate {
    
    @IBOutlet weak var tableView: UITableView!
    let sections: [String] = ["Section 1", "Section 2", "Section 3"]
    let s1Data: [String] = ["Row 1", "Row 2", "Row 3"]
    let s2Data: [String] = ["Row 1", "Row 2", "Row 3"]
    let s3Data: [String] = ["Row 1", "Row 2", "Row 3"]
    
    var sectionData: [Int: [String]] = [:]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        tableView.delegate = self
        tableView.dataSource = self
        
        sectionData = [0:s1Data, 1:s2Data, 2:s3Data]
    }
    
    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) 
            -> Int {
        return (sectionData[section]?.count)!
    }
    
    func tableView(tableView: UITableView, titleForHeaderInSection section: Int) 
            -> String? {
        return sections[section]
    }
    
    func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        return sections.count
    }
    
    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) 
            -> UITableViewCell {
        var cell = tableView.dequeueReusableCellWithIdentifier("cell")
        
        if cell == nil {
            cell = UITableViewCell(style: .Default, reuseIdentifier: "cell");
        }
        
        cell!.textLabel?.text = sectionData[indexPath.section]![indexPath.row]
        
        return cell!
    }
}
 

(Swift 2.2)