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ioscocoa-touchuisearchbar

How to know when search bar text changes

I have a search bar and I need to get a notification when the bar text changes, how can I do that? I need to reload the table view every time the string value of the search bar changes

Solution

  • Follow the below steps to get it done

    Add Delegate methods for your View Controller

    ViewController: UISearchBarDelegate, UISearchDisplayDelegate

    Create IBOutlet for your searchBar

    @IBOutlet weak var searchBarVar: UISearchBar!

    Assign Delegates as self to searchBar in viewDidLoad.

    override func viewDidLoad() {
    super.viewDidLoad()
    
    searchBarVar.delegate = self
}

    Implement the textDidChange delegate method

    Swift 4:

    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
    print("searchText",searchText)
}

    ObjC

    - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText;