ios侧滑返回：完美解决 interactivePopGestureRecognizer 卡住的问题

interactivePopGestureRecognizer是iOS7推出的解决VeiwController滑动后退的新功能,虽然很实用,但是坑也很多啊（比如在rootViewcontroller下，使用侧滑返回手势，可能就卡住了）,这里给出如何完美解决interactivePopGestureRecognizer卡住的问题.

当然我们要自定义UINavigationController来解决这个问题:

#import "MMNavController.h"

@interface MMNavController ()
{

}

@end

@implementation MMNavController

- (id)initWithRootViewController:(UIViewController *)rootViewController
{
    self = [super initWithRootViewController:rootViewController];
    if (self) {
        // Custom initialization

    }
    return self;
}

- (void)viewDidLoad
{

    __weak MMNavController *weakSelf = self;

    if ([self respondsToSelector:@selector(interactivePopGestureRecognizer)])
    {
        self.interactivePopGestureRecognizer.delegate = weakSelf;

        self.delegate = weakSelf;
    }

}

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{

    if ( [self respondsToSelector:@selector(interactivePopGestureRecognizer)] && animated == YES )
    {
        self.interactivePopGestureRecognizer.enabled = NO;
    }

    [super pushViewController:viewController animated:animated];

}

- (NSArray *)popToRootViewControllerAnimated:(BOOL)animated
{
    if ( [self respondsToSelector:@selector(interactivePopGestureRecognizer)] && animated == YES )
    {
        self.interactivePopGestureRecognizer.enabled = NO;
    }

    return  [super popToRootViewControllerAnimated:animated];

}

- (NSArray *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if( [self respondsToSelector:@selector(interactivePopGestureRecognizer)] )
    {
        self.interactivePopGestureRecognizer.enabled = NO;
    }

    return [super popToViewController:viewController animated:animated];

}

#pragma mark UINavigationControllerDelegate

- (void)navigationController:(UINavigationController *)navigationController
       didShowViewController:(UIViewController *)viewController
                    animated:(BOOL)animate
{
    if ([self respondsToSelector:@selector(interactivePopGestureRecognizer)])
    {
        self.interactivePopGestureRecognizer.enabled = YES;
    }
}

-(BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{

    if ( gestureRecognizer == self.interactivePopGestureRecognizer )
    {
        if ( self.viewControllers.count <  || self.visibleViewController == [self.viewControllers objectAtIndex:] )
        {
            return NO;
        }
    }

    return YES;
}

@end

转载自：http://adad184.com/2013/12/12/2013-12-12-wan-mei-jie-jue-interactivepopgesturerecognizer-qia-zhu-de-wen-ti/