Question

I am making a slideshow for in my app. I want it almost like the photo app of Apple. It is almost finished just some small issues. I want to hide the navbar when tapped on the screen and show it when tapped again. But I am not sure how to do this.

Answer 1

// catch the screen tap and call a method to hide the navigation bar
UITapGestureRecognizer *gesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(toggleNavBar:)];
[self.view addGestureRecognizer:gesture];
[gesture release];

- (void)toggleNavBar:(UITapGestureRecognizer *)gesture {
    BOOL barsHidden = self.navigationController.navigationBar.hidden;
    [self.navigationController setNavigationBarHidden:!barsHidden animated:YES];
}