A lightweight scrollable UINavigationBar that follows a UIScrollView. This project was inspired by the navigation bar functionality seen in the Chrome, Facebook and Instagram iOS apps.

Installation

Manually

Add the GTScrollNavigationBar folder to your project. GTScrollNavigationBar uses ARC, so if you have a project that doesn't use ARC, add the -fobjc-arc compiler flag to the GTScrollNavigationBar files.

Usage

Set up the navigation controller to use GTScrollNavigationBar:

#import "GTScrollNavigationBar.h"

self.navController = [[UINavigationController alloc] initWithNavigationBarClass:[GTScrollNavigationBar class]
                                                                   toolbarClass:nil];
[self.navController setViewControllers:@[self.mainViewController] animated:NO];

In your view controller which has a UIScrollView, e.g. UITableViewController, set the UIScrollView object to the GTScrollNavigationBar in viewWillAppear: or viewDidAppear: by:

self.navigationController.scrollNavigationBar.scrollView = self.tableView;

To unfollow the scrollView, simply set scrollView property to nil

self.navigationController.scrollNavigationBar.scrollView = nil;

Implement scrollViewDidScrollToTop: in the view controller to reset the navigation bar's position

- (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView
{
    [self.navigationController.scrollNavigationBar resetToDefaultPositionWithAnimation:NO];
}

Contact

@luugiathuy