Dismiss keyboard in IOS

gistfile1.txt

//Add UITextFieldDelegate in Controller
@interface ViewController : UIViewController<UITextFieldDelegate>

UITapGestureRecognizer *tapRecognizer;

NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
    
[nc addObserver:self selector:@selector(keyboardWillShow:) name:
 UIKeyboardWillShowNotification object:nil];

[nc addObserver:self selector:@selector(keyboardWillHide:) name:
 UIKeyboardWillHideNotification object:nil];

tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self
                                                        action:@selector(didTapAnywhere:)];
                                                        
   
   
//Add delegate to all fields to dismiss keyboard when return button is pressed in keyboard
field.delegate = self;
                                                        
-(void) keyboardWillShow:(NSNotification *) note {
    [self.view addGestureRecognizer:tapRecognizer];
}

-(void) keyboardWillHide:(NSNotification *) note
{
    [self.view removeGestureRecognizer:tapRecognizer];
}

-(void)didTapAnywhere: (UITapGestureRecognizer*) recognizer {
    [self.view endEditing:YES];
}

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    return YES;
}