Getting autocomplete to work in swift

Question

I am trying to implement autocompletion, but can\'t find an example that works in Swift. Below, I\'m tring to convert Ray Wenderlich\'s autocompletion tutorial and example c

Answer 1

table view added without storyboard

class ViewController: UIViewController  , UITableViewDelegate, UITableViewDataSource, UITextFieldDelegate {


@IBOutlet weak var textField: UITextField!

var autocompleteTableView: UITableView!
var pastUrls = ["Men", "Women", "Cats", "Dogs", "Children","aaaaaaaaa","aaaaaaaaaaaaaaaaaaa","aaaaaaaaa","a","aa","aaa"]
var autocompleteUrls = [String]()

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    autocompleteTableView = UITableView(frame: CGRectMake(self.textField.bounds.minX,self.textField.bounds.maxY,self.textField.bounds.width,self.textField.bounds.height * 4), style: UITableViewStyle.Plain)

    textField.delegate = self

    autocompleteTableView.delegate = self
    autocompleteTableView.dataSource = self
    autocompleteTableView.scrollEnabled = true
    autocompleteTableView.hidden = false

    autocompleteTableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")
    self.view.addSubview(autocompleteTableView)
}

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


func textField(textField: UITextField!, shouldChangeCharactersInRange range: NSRange, replacementString string: String!) -> Bool
{
    autocompleteTableView.hidden = false
    var substring = (self.textField.text! as NSString).stringByReplacingCharactersInRange(range, withString: string)

    searchAutocompleteEntriesWithSubstring(substring)
    return true      // not sure about this - could be false
}

func searchAutocompleteEntriesWithSubstring(substring: String)
{
    autocompleteUrls.removeAll(keepCapacity: false)

    for curString in pastUrls
    {
        var myString:NSString! = curString as NSString

        var substringRange :NSRange! = myString.rangeOfString(substring)

        if (substringRange.location  == 0)
        {
            autocompleteUrls.append(curString)
        }
    }

    autocompleteTableView.reloadData()
    //autocompleteTableView.hidden = false
}

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return autocompleteUrls.count
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

            let autoCompleteRowIdentifier = "cell"
            var cell : UITableViewCell = tableView.dequeueReusableCellWithIdentifier(autoCompleteRowIdentifier, forIndexPath: indexPath) as UITableViewCell
            let index = indexPath.row as Int

            cell.textLabel!.text = autocompleteUrls[index]



            return cell




}

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    let selectedCell : UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)!
    textField.text = self.autocompleteUrls[indexPath.row]

    self.autocompleteTableView.hidden = true
}











 }