Dismiss Keyboard When Tapping Outside UITextField

A quick way to dismiss keyboard when tapping outside a UITextField can be done as follows.

- (void)viewDidLoad {
    ...
    [self.view addGestureRecognizer:[[UITapGestureRecognizer alloc] 
                                       initWithTarget:self.view 
                                               action:@selector(endEditing:)]];
    ...
}

The same can be re-written with a selector method as follows.

- (void)viewDidLoad {
    ...
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] 
                                     initWithTarget:self
                                             action:@selector(hideKeyboard)];
    [self.view addGestureRegnizer:tap];
    ...
}

- (void)hideKeyboard {
    [self.view endEditing:YES];
}