tap anywhere to dismiss keyboard

dismisskeyboard.m

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:)];

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

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

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