iOS wiring to end editing when the user touches anywhere other than the keypad

gistfile1.txt

// Useful for when the keypad is open.
// In the view controller:

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    // Listen for taps to end editing
    UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];
    [self.view addGestureRecognizer:gestureRecognizer];
}

- (void)tap:(UIGestureRecognizer *)ui
{
    [self.view endEditing:YES];
}