An UINavigationController's category to enable fullscreen pop gesture in an iOS7+ system style with AOP.

这个扩展来自 @J_雨 同学的这个很天才的思路，他的文章地址：http://www.jianshu.com/p/d39f7d22db6c

AOP, just add 2 files and no need for any setups, all navigation controllers will be able to use fullscreen pop gesture automatically.

To disable this pop gesture of a navigation controller:

navigationController.fd_fullscreenPopGestureRecognizer.enabled = NO;

To disable this pop gesture of a view controller:

viewController.fd_interactivePopDisabled = YES;

Require at least iOS 7.0.

It handles navigation bar transition properly when using fullscreen gesture to push or pop a view controller:

• with bar -> without bar
• without bar -> with bar
• without bar -> without bar

This opmiziation is enabled by default, from now on you don't need to call UINavigationController's -setNavigationBarHidden:animated: method, instead, use view controller's specific API to hide its bar:

- (void)viewDidLoad {
    [super viewDidLoad];
    self.fd_prefersNavigationBarHidden = NO;
}

And this property is YES by default.

Use cocoapods

pod 'FDFullscreenPopGesture', '1.1'

1.1 - View controller based navigation bar appearance and transition.
1.0 - Fullscreen pop gesture.

MIT