IOS perfectly solves the problem of interactivepopgsturerecognizer getting stuck. How can this problem be solved when the computer gets stuck?
interactivePopGestureRecognizerSolution released by iOS7VeiwControllerAlthough the new function of sliding backward is very practical, there are still many pitfalls. Those who have used it will certainly know where the problem is, so I will not describe the specific problem. Here I will only explain how to solve it perfectly.interactivePopGestureRecognizerStuck.
Of course, we need to customize UINavigationController to solve this problem:
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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
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