UITable View: Making separate sections and adding titles and subtitles

Question

Separate sections for each Headings; Under each section title should be SubHeadings, subtitle should be Drugs.

I am able to get numberOfSections correctly, how can I set the right section Header and call title and subtitle for this project?

class FinalPageViewController: UITableViewController {

var top: [String: AnyObject]!
var subheading: [String: AnyObject]!
var drugs:[String: AnyObject]!
let CellIdentifier = "Cell Identifier"
var sectioHeader = [String] ()


var subheads: [AnyObject] {
    //Passing the key Top(Array) here and defining it from plist
    if let subheads = top["Subhead"] as? [AnyObject] {
        return subheads
    } else {
        return [AnyObject]()
    }
}
var drug: [AnyObject] {
    //Passing the key Top(Array) here and defining it from plist
    if let drug = top["Drugs"] as? [AnyObject] {
        return drug
    } else {
        return [AnyObject]()
    }
}
var heads: [AnyObject] {
    //Passing the key Top(Array) here and defining it from plist
    if let heads = top["Head"] as? [AnyObject] {
        return heads
    } else {
        return [AnyObject]()
    }
}
override func viewDidLoad() {
    super.viewDidLoad()
    //Assigning the key Top here to title
    if let name = top["Top"] as? String {
        title = name

    }
    tableView.register(UITableViewCell.classForCoder(), forCellReuseIdentifier: CellIdentifier)
}



override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

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

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    return subheads.count
}

override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    let titleName = title
if let titleHeader = heads as? [String: AnyObject], let titled = titleHeader["Headings"] as? String
{
    titleName.text = titled
}
return titleName
}

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    // Dequeue Resuable Cell
    let cell = tableView.dequeueReusableCell(withIdentifier: CellIdentifier, for: indexPath)

    if let head = heads[(indexPath as NSIndexPath).row] as? [String: AnyObject], let title = head["Headings"] as? String {
        //Topics is the Key inside array top
        // Configure Cell
        cell.textLabel?.text = title
    }

    return cell;
}
}

The plist file is a bit big and goes like this.

<plist version="1.0">
<array>
<dict>
    <key>Chap</key>
    <string>ANS</string>
    <key>Top</key>
    <array>
        <dict>
            <key>Topics</key>
            <string>Cholinergics</string>
            <key>Head</key>
            <array>
                <dict>
                    <key>Headings</key>
                    <string>Directly acting</string>
                    <key>Subhead</key>
                    <array>
                        <dict>
                            <key>Subheadings</key>
                            <string>Choline esters </string>
                            <key>Drugs</key>
                            <array>
                                <string>Acetylcholine</string>
                                <string>Bethanechol</string>
                                <string>Carbhachol</string>
                                <string>Methacholine</string>
                            </array>
                        </dict>
                        <dict>
                            <key>Subheadings</key>
                            <string>Natural Alkaloids</string>
                            <key>Drugs</key>
                            <array>
                                <string>Nicotine</string>
                                <string>Pilocarpine</string>
                                <string>Muscarine</string>
                                <string>Arecoline</string>
                            </array>
                        </dict>
                    </array>
                </dict>
                <dict>
                    <key>Headings</key>
                    <string>Indirectly acting</string>
                    <key>Subhead</key>
                    <array>
                        <dict>
                            <key>Subheadings</key>
                            <string>Reversible Carbamates</string>
                            <key>Drugs</key>
                            <array>
                                <string>Neostigmine</string>
                                <string>Edrophonium</string>
                                <string>Physostigmine</string>
                                <string>Pyridostigmine</string>
                                <string>Ambenonium</string>
                                <string>Galantamine</string>
                                <string>Donepezil</string>
                                <string>Rivastigmine</string>
                            </array>
                        </dict>
                        <dict>
                            <key>Subheadings</key>
                            <string>Reversible Acridine</string>
                            <key>Drugs</key>
                            <array>
                                <string>Tacrine</string>
                            </array>
                        </dict>
                        <dict>
                            <key>Subheadings</key>
                            <string>Irreversible Carbamates</string>
                            <key>Drugs</key>
                            <array>
                                <string>Propoxur</string>
                            </array>
                        </dict>
                        <dict>
                            <key>Subheadings</key>
                            <string>Irreversible organophosphates</string>
                            <key>Drugs</key>
                            <array>
                                <string>Echothiophate</string>
                                <string>Parathion</string>
                                <string>Malathion</string>
                                <string>Dyflos</string>
                                <string>Diazinon</string>
                                <string>Tabun</string>
                                <string>Sarin</string>
                                <string>Soman</string>
                            </array>
                        </dict>
                    </array>
                </dict>
                <dict>
                    <key>Headings</key>
                    <string>Cholineesterase Reactivators</string>
                    <key>Drugs</key>
                    <array>
                        <string>Pralidoxime</string>
                        <string>Obidoxime</string>
                        <string>Trimedoxime</string>
                    </array>
                </dict>
            </array>
            </dict>
            <dict>

Answer 1

Your variable heads is an array. So you should get the element with the index of section from heads array and then get "Headings" from the titleHeader.

Try this

override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        var titleName = title
        if let titleHeader = heads[section] as? [String: AnyObject], let titled = titleHeader["Headings"] as? String
        {
            titleName = titled
        }
        return titleName
    }