Deprecated
This lib uses a hacky way to achieve the result, in the new iOS version, the structure of UINavigation is changed and this lib no longer works anymore, so please check these alternatives:
- https://github.com/andreamazz/AMScrollingNavbar
- https://github.com/DanisFabric/RainbowNavigation
- https://github.com/MoZhouqi/KMNavigationBarTransition
swift version
https://github.com/ltebean/LTNavigationBar/tree/swift3.0
Purpose
It is hard to change the appearance of UINavigationBar dynamically, so I made this lib to make the job easy.
Demo
1. Changing the background color:
2. Making navigation bar scroll along with a scroll view:
Usage
First, import this lib:
#import "UINavigationBar+Awesome.h"
The category includes lots of method that helps to change UINavigationBar's appearance dynamically:
@interface UINavigationBar (Awesome)
- (void)lt_setBackgroundColor:(UIColor *)backgroundColor;
- (void)lt_setElementsAlpha:(CGFloat)alpha;
- (void)lt_setTranslationY:(CGFloat)translationY;
- (void)lt_reset;
@end
You can call the various setter wherever you want, like:
[self.navigationController.navigationBar lt_setBackgroundColor:[UIColor blueColor]];
And usually in viewWillDisappear, you should call this method to avoid any side effects:
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
[self.navigationController.navigationBar lt_reset];
}
See the example for details~