iOS 完美解決 interactivePopGestureRecognizer 卡住的問題，電腦卡住了怎麼解決
interactivePopGestureRecognizer是iOS7推出的解決VeiwController滑動後退的新功能,雖然很實用,但是坑也很多啊,用過的同學肯定知道問題在哪裡,所以具體問題我就不描述了,這裡只給出如何完美解決interactivePopGestureRecognizer卡住的問題.
當然我們要自訂UINavigationController來解決這個問題:
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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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