iPhone perform action when UITextField / UISearchBar's clear button is pressed

Is it possible to gain access to a delegate method that will allow additional actions to be performed when the "clear" button is pressed on a UITextField / UISearchBar?



See: UITextFieldDelegate Protocol Reference

If you set your view controller as the delegate for your text field (can be done in interface builder), you can use:

- (void)clearSearchTextField

- (BOOL)textFieldShouldClear:(UITextField *)textField
  if (textField == self.searchTextField) [self clearSearchTextField];
  return YES;

For Swift 3:

To perform an action when the "clear" button is pressed on a UITextField

func textFieldShouldClear(_ textField: UITextField) -> Bool {
    if textField == yourTextFieldName {
        // do some action
    return true

For a UISearchBar you will want to implement func searchBar(searchBar: UISearchBar, textDidChange searchText: String).

This is triggered before func searchBarTextDidBeginEditing(searchBar: UISearchBar) and before func searchBar(searchBar: UISearchBar, shouldChangeTextInRange range: NSRange, replacementText text: String) -> Bool as well.

You implementation should look something like this:

func searchBar(searchBar: UISearchBar, textDidChange searchText: String) {
        if searchText == "" {
            //Code to execute when search is cleared

When you clear the text field several events will happen that you will have access to through either the UISearchDisplayDelegate or the UISearchBarDelegate such as searchBar:textDidChange and searchDisplayController:shouldReloadTableForSearchString

This will also cause the search table to hide so it will trigger


When the search table will hide you can check if the search text is empty and then do whatever you need to do.

See my answer here: https://stackoverflow.com/a/3852509/91458 – it’s for a searchBar but should apply to a textField as well.

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