问触摸按钮不会触发分段

EN

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    UITapGestureRecognizer *touchDismissKeyboard = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];

    [self.view addGestureRecognizer:touchDismissKeyboard];

    [[self navigationController] setNavigationBarHidden:YES animated:NO];



}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

-(void)dismissKeyboard
{


}

    UITapGestureRecognizer *touchDismissKeyboard = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];

    [self.view addGestureRecognizer:touchDismissKeyboard];