Scrollable UINavigationBar that follows the scrolling of a UIScrollView or similar view (e.g. UITableView or UIWebView). It works like the navigation bar in Chrome or Facebook's app for iOS7.

I also wrote about this control in this article

#Screenshot

#Setup

• Add pod 'AMScrollingNavbar' to your Podfile
• Run pod install
• Run open App.xcworkspace
• Import UIViewController+ScrollingNavbar.h in your controller
• Implement the two following methods:

- (void)viewWillDisappear:(BOOL)animated
{
	[super viewWillDisappear:animated];
	[self showNavBarAnimated:NO];
}

#Enable the scrolling with Autolayout

Version 1.1 introduced an Autolayout-friendly way of setting up your view, it's strongly recommended the use of this method:

• Setup your view using autolayout
• Create an outlet of the top constraint of the first view sitting below the navigation bar
• Enable the scrolling with this method:

[self followScrollView:self.scrollView usingTopConstraint:self.topLayoutConstraint];

Make sure to check the project sample to have a better understanding of how Autolayout constraints need to be set.

#Enable the scrolling without Autolayout

This version does not require autolayout, to enable the scrolling effect you simply need to call followScrollView: providing the UIView's instance that will be tracked, like this:

[self followScrollView:self.scrollView];

You can also set a delay (in points) for the gesture that reveals the navigation bar.

[self followScrollView:self.scrollView withDelay:60];

Make sure to have a barTintColor for your UINavigationBar, or you won't see the fade-in and fade-out effects. Also make sure that you are not using a translucent navigation bar. E.g., in your controller:

[self.navigationController.navigationBar setTranslucent:NO];

Make sure to set your scrollview's constraint properly. Please note that the library changes the scrollview's superview frame.

You can find a video with the full setup here

If you are not using a plain UIViewController you have to enable this property:

[self setUseSuperview:NO];

You can implement the AMScrollingNavbarDelegate protocol to receive these messages:

- (void)navigationBarDidChangeToCollapsed:(BOOL)collapsed;
- (void)navigationBarDidChangeToExpanded:(BOOL)expanded;

The MIT License (MIT)

Copyright (c) 2014 Andrea Mazzini

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
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the Software, and to permit persons to whom the Software is furnished to do so,
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The above copyright notice and this permission notice shall be included in all
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