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,用过的同学肯定知道问题在哪里,所以具体问题我就不描述了,这里只给出如何完美解决interactivePopGestureRecognizer卡住的问题.

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

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#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 < 2 || self.visibleViewController == [self.viewControllers objectAtIndex:0] )
{
return NO;
}
}

return YES;
}


@end