Click Gesture to hide the navigation bar, tab bar, and status bar.

Question

I am trying to implement a binding gesture on my web view in order to hide / show the navigation bar, tab bar and status bar. I have a hide / show navigation bar working fine and I can hide the status bar but not get it to show a backup. The tab bar items are hidden, but the bar is still there. Can anyone help with this?

- (void)toggleBars:(UITapGestureRecognizer *)gesture { [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide]; BOOL statusBarHidden = YES; BOOL barsHidden = self.navigationController.navigationBar.hidden; [self.navigationController setNavigationBarHidden:!barsHidden animated:YES]; BOOL tabBarHidden = self.tabBarController.tabBar.hidden; [self.tabBarController.tabBar setHidden:!tabBarHidden]; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view from its nib. UIBarButtonItem *systemAction = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(showMenu)]; self.navigationItem.rightBarButtonItem = systemAction; UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(toggleBars:)]; [webView addGestureRecognizer:singleTap]; singleTap.delegate = self; } - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer { return YES; } 

EDIT: It looks like the tab bar is hiding, but my webview just doesn't fill the empty space. How can I fill in the gap when the tab bar is hidden?

Answer 1

First of all, your status bar is never displayed because you never talk about it. As written, your code simply tells the status bar to hide every time it executes.

 [[UIApplication sharedApplication] setStatusBarHidden:![[UIApplication sharedApplication] isStatusBarHidden] withAnimation:UIStatusBarAnimationSlide]; [self.navigationController setNavigationBarHidden:!self.navigationController.navigationBar.hidden animated:YES]; 

Also, I'm not sure in the details why your tab bar is not hiding properly, but I found the following category, which claims to be able to hide the tab bar with animating options.

https://github.com/idevsoftware/Cocoa-Touch-Additions/tree/master/UITabBarController_setHidden

Answer 2

I got a status bar to hide / show by adding this to my toggleBars method, but I still don't understand why the elements of the tab bar are hidden, but not the tab bar itself.

 if (([UIApplication sharedApplication].statusBarHidden = YES)) { [[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationSlide]; } else { [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide]; }