CODEWITHSUNDEEP
iosswiftxcode
ethanfox27
ethanfox27

Reputation: 897

Using a Textfield as a Search Bar in Swift 3 Xcode 8

I have my project setup like this:

I have a custom Tab Navigation Controller. In the top bar of the Custom Tab Navigation Controller is a text field. This text field changes according to the 4 main views of the app (4 tab buttons).

What I am trying to do is use the text field as a search bar by passing whatever is typed into the text field into the searchView However, I am having trouble passing the textfield.text from the Navigation Controller into searchView. I have a picture below that illustrates this more clearly. enter image description here

The searchView has the search function taken care of. All I am trying to do is pass with textfieled.text value to the searchView whenever it is changed

Upvotes: 0

Views: 5590

Answers (2)

GIJOW
GIJOW

Reputation: 2343

// global 
let handleTextChangeNotification = "handleTextChangeNotification"

your FirstViewController

override func viewDidLoad() {
      super.viewDidLoad()
      textField.addTarget(self, action: #selector(textFieldDidChange(_:)), for: .editingChanged)
}


func textFieldDidChange(textField: UITextField){
       NotificationCenter.default.post(name: NSNotification.Name(rawValue: handleTextChangeNotification), object: nil, userInfo: ["text":textField.text])
       let search_screen = SearchViewController()

       self.navigationController?.pushViewController(search_screen, animated: true)
    }

SeacrchViewController's

 override func viewDidLoad() {
    super.viewDidLoad()
    NotificationCenter.default.addObserver(self,
                                           selector: #selector(SeacrchViewController.handleTextChange(_:)),
                                           name: NSNotification.Name(rawValue: handleTextChangeNotification),
                                           object: nil)
 }

func handleTextChange(_ myNot: Notification) {
   if let use = myNot.userInfo {
       if let text = use["text"] {
                 // your search with 'text' value
            }
       }
    }
}

Upvotes: 1

Umair
Umair

Reputation: 1253

You can do something like that. In your FirstViewController

 func textFieldDidChange(textField: UITextField){

   let search_screen = SearchViewController()
   search_screen.search_string = self.textField.text
   self.navigationController?.pushViewController(search_screen, animated: true)
}

In case of storyboards

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) 
{    
    if (segue.identifier == "Your_SearchViewController_identifier") {
        let search_screen = segue.destinationViewController as! 
         SearchViewController 
        search_screen.search_string = self.textField.text           
    }

}

And In your SeacrchViewController's viewDidLoad:

 override func viewDidLoad() {
    super.viewDidLoad()
    self.textField.text = self.search_string
 }

Upvotes: 1

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