how to display global dictionary items in table view - ios

Question

There are two views in my project: in the first one users input two words and those words are saved in a dictionary as the key and the value. The code in short:
var words = [Dictionary<String, String>]()//<-declared outside the class
words.append([input.text: input2.text] as! [String : String])
Then in the second view, I want to display all the saved words in table cell like so:
And I have found some code for doing that, but it works only for a local dict:
class TableViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
// Data model: These strings will be the data for the table view cells
let animals: [String] = ["Horse", "Cow", "Camel", "Sheep", "Goat"]
// cell reuse id (cells that scroll out of view can be reused)
let cellReuseIdentifier = "cell"
// don't forget to hook this up from the storyboard
#IBOutlet var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
// Register the table view cell class and its reuse id
self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: cellReuseIdentifier)
// (optional) include this line if you want to remove the extra empty cell divider lines
// self.tableView.tableFooterView = UIView()
// This view controller itself will provide the delegate methods and row data for the table view.
tableView.delegate = self
tableView.dataSource = self
}
// number of rows in table view
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.animals.count
}
// create a cell for each table view row
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
// create a new cell if needed or reuse an old one
let cell:UITableViewCell = self.tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier) as UITableViewCell!
// set the text from the data model
cell.textLabel?.text = self.animals[indexPath.row]
return cell
}
// method to run when table view cell is tapped
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("You tapped cell number \(indexPath.row).")
}
}
I have edited the code above like so:
var wordIndex1 = words.count - 1
class TableViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var word = words[wordIndex1] as? Dictionary<String, String>
let cellReuseIdentifier = "cell"
#IBOutlet var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: cellReuseIdentifier)
tableView.delegate = self
tableView.dataSource = self
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return (self.word?.count)!
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell:UITableViewCell = self.tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier) as UITableViewCell!
cell.textLabel?.text = self.word?.keys.first
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("You tapped cell number \(indexPath.row).")
}
}
But it only displays the last added value whereas in the first code it creates a new cell for each new value.
What did I do wrong?

Answer 1

You access array index = number of items you need
var wordIndex1 = words.count - 1
or in short
if let lastWord = words.last {
////
}
note array indexing starts with 0 and to numberOfElemnts - 1
Also it's better to have a model
struct Item {
let leftInp.rightInp:String
}
then create the array like
var arr = [Item]()
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return words.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell:UITableViewCell = self.tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier) as UITableViewCell!
let dic = words[indexPath.row]
cell.textLabel?.text = dic.keys.first
return cell
}