README.md

Mypicker

simple tab bar controller and two views, each contains pickerview with a content

ViewController.swift

class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {
    
    //how many components (slots) in picker
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 1
    }
    
    //number of rows in each component
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return 10
    }

    //title for each component
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return "Bubu \(row)"
    }
}

SecondViewController.swift

class SecondViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {
    
    let stuff = [
        "Apple",
        "Seven",
        "Heart",
        "Cherry",
        "Diamond",
        "Clubs",
        "Spades",
        "Jackpot"
    ]
    
    func numberOfComponents(in pickerView: UIPickerView) -> Int {
        return 3
    }
    
    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
        return stuff.count
    }
    
    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
        return stuff[row]
    }
    
    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
        print("\(component), \(row): \(stuff[row])")
    }
}

---

Mytables2

table view and textfield to filter the table

class ViewController: UIViewController, UITableViewDataSource, UITextViewDelegate {
   
    @IBOutlet var tbl: UITableView!
    
    let items = ["Omri", "Gal", "Nikita", "Nevoa", "Rafael", "Kim"]
    var selectedItems: [String]!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        selectedItems = items
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return selectedItems.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = UITableViewCell()
        
        cell.textLabel?.text = selectedItems[indexPath.row]
        
        return cell
    }

    //event editing changed
    @IBAction func filter(_ sender: UITextField) {
        //fiter items
        let txt = sender.text!.trimmingCharacters(in: .whitespacesAndNewlines)
        
        if txt.isEmpty {
            //show all items
            selectedItems = items
        } else {
            //filter
            selectedItems = []
            for i in items {
                if i.lowercased().contains(txt.lowercased()) {
                    selectedItems.append(i)
                }
            }
        }
        
        //refresh
        tbl.reloadData()
    }
}

---

TablesEx1

two controllers, one with tabelview and the other display selected items from the first

ViewController.swift

class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
    
    let names = ["Zohar","Gidon","Yosi","Idan","Bubu","Groot","Deadpool"]
    
    var selectedNames:[String] = []
    
    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return names.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = UITableViewCell()
        
        cell.textLabel?.text = names[indexPath.row]
        
        return cell
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
//        let name = names[indexPath.row]
//        let next = storyboard!.instantiateViewController(withIdentifier: "second") as! SecondController
//
//        next.set(msg: name)
//        show(next, sender: self)
        selectedNames.append(names[indexPath.row])
    }
    
    func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
        let index = selectedNames.index(of: names[indexPath.row])!
        selectedNames.remove(at: index)
    }
    
    @IBAction func goNext(){
        let next = storyboard!.instantiateViewController(withIdentifier: "second") as! SecondController
        
        //pass data
        next.set(names: selectedNames)
        
        show(next, sender: self)
    }
}

SecondController.swift

class SecondController: UIViewController {

    @IBOutlet var ttl: UILabel!
    private var msg: String!
    private var names:[String]!
    
    override func viewDidLoad() {
        super.viewDidLoad()

        //ttl.text = msg
        ttl.text = "\(names!)"
    }
    
    public func set(msg: String) {
        self.msg = msg
    }
    
    public func set(names: [String]){
        self.names = names
    }
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        dismiss(animated: true, completion: nil)
    }

}

note: at first we selected only one item in the table , pressed the button gonext() and pass with next.set(msg: name) and later on we enabled multiple selection in the table and passed [String] in selectedNames variable enable multiple selecetion:

---

TablesEx2

plist and tableview

items.plist

<array>
	<dict>
		<key>name</key>
		<string>Coca</string>
		<key>price</key>
		<integer>10</integer>
	</dict>
	<dict>
		<key>name</key>
		<string>Sprite</string>
		<key>price</key>
		<integer>10</integer>
	</dict>
	<dict>
		<key>name</key>
		<string>Bread</string>
		<key>price</key>
		<integer>5</integer>
	</dict>
	<dict>
		<key>name</key>
		<string>Water</string>
		<key>price</key>
		<integer>1</integer>
	</dict>
	<dict>
		<key>name</key>
		<string>Movie Ticket</string>
		<key>price</key>
		<integer>25</integer>
	</dict>
	<dict>
		<key>name</key>
		<string>Protein</string>
		<key>price</key>
		<integer>33</integer>
	</dict>
	<dict>
		<key>name</key>
		<string>Computer</string>
		<key>price</key>
		<real>1500</real>
	</dict>
	<dict>
		<key>name</key>
		<string>Monitor</string>
		<key>price</key>
		<integer>400</integer>
	</dict>
</array>
</plist>

viewcontroller.swift

class ViewController: UIViewController, UITableViewDataSource {
    private var items: [[String: Any]]!
    
    override func viewDidLoad() {
        let path = Bundle.main.path(forResource: "items", ofType: "plist")!
        items = NSArray(contentsOfFile: path) as! [Dictionary]
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return items.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = UITableViewCell()
        let item = items[indexPath.row]
        cell.textLabel?.text = "\(item["name"]!): \(item["price"]!)"
        
        return cell
    }
    
}