UITextField的带有搜索returnkey的resignFirstResponder

Question

Simple question: how can I resign my textfield if my "done" key is Search. Essentially, what do I do if the user does not want to search, but instead wants to cancel...

thanks

Answer 1

You can use: a cancel button for SearchBar and need to implement this SearchBar delegate :

- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar
{
    isSearching = NO; //This is a flag which specifies if searching is going on or not.
    searchBar.text = @""; //Clears out search bar text
    [self resetSearch]; //Reset search resets all the flags and variables.
    [self.leadsTable reloadData]; //Reloads the tableView
    [searchBar resignFirstResponder]; //Resigns responder from Search bar
}

This is a proper way to resign the responder if user doesn't want to search.

Look at how you can add an in-built Cancel button in UISearchBar. Check the property " Shows Cancel Button " (Red Arrow highlight)

EDIT:

STEP-1: Check conditionally whether your textField's text is blank? If so resignFirstResponder for the TextField. You need to set the Delegate to self for the UITextField using code:

txtField.delegate = self;

Or you can do the same from the interface builder by connecting TextField's delegate to File's Owner .

STEP-2: You need to implement this delegate method.

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
   if([textField.text isEqualToString:@""])
   {
        [textField resignFirstResponder];
   }
    return YES;
}

EDIT-1:

Now create a UIToolbar with one bar button labeled 'Cancel'

Once you have done that:

You can write an button click event for UIToolBar:

-(IBAction)cancelClicked:(id)sender
{
    [txtField resignFirstResponder];
}

Once you have done that you can now just write:

txtField.inputAccessoryView = toolbarOutlet;

Hope this helps you.

Answer 2

The text on the return button is irrelevant to the discussion. You want to know how to resign first responder without pressing the return button, and there are a few ways to do it.

1. Use the inputAccessoryView of the text field to display a separate cancel button in a toolbar above the keyboard.
2. Use a tap gesture recognizer on the field's superview to recognize when the user taps outside the field, and call [self.view endEditing:YES] (where self is your view controller). This will cause the first responder to resign. (This is very finicky in a scroll view.)
3. Swap out the rightBarButtonItem of the current view controller for a cancel bar button item while editing, assuming you have a UINavigationBar on screen at the time. When editing ends, swap back in the regular right bar button item, if any.