Iphone: Is it possible to hide the TabBar? (Pre-iOS 8)

Question

I have an application that uses a UITabBarController to switch between modes. When in a certain mode, I\'d like to hide the tab bar until the steps of that mode

Answer 1

Here is my solution (my tab view controller is inside navigation controller for good measure)... So I have subclassed UITabBarController and did this... exposing -setTabBarHidden: method

- (void)setTabBarHidden:(BOOL)hidden {
    _tabBarHidden = hidden;

    [UIView performWithoutAnimation:^{
        [self adjustViews];
    }];

}

- (void)adjustViews {
    if ( _tabBarHidden ) {
        CGRect f = self.tabBar.frame;

        // move tab bar offscreen
        f.origin.y = CGRectGetMaxY(self.view.frame);
        self.tabBar.frame = f;

        // adjust current view frame
        self.selectedViewController.view.frame = self.view.frame;
    } else {
        CGRect f = self.tabBar.frame;

        // move tab bar on screen
        f.origin.y = CGRectGetMaxY(self.view.frame) - (CGRectGetMaxY(self.tabBar.bounds) + CGRectGetMaxY(self.navigationController.navigationBar.frame));
        self.tabBar.frame = f;

        // adjust current view frame
        f = self.view.bounds;
        f.size.height -= CGRectGetMaxY(self.tabBar.bounds);
        self.selectedViewController.view.frame = f;
    }
}

- (void)viewWillLayoutSubviews {
    [super viewWillLayoutSubviews];

    [UIView performWithoutAnimation:^{
        [self adjustViews];
    }];
}

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];

    [UIView performWithoutAnimation:^{
        [self adjustViews];
    }];
}