#import <UIKit/UIKit.h>
@interface RCDNavigationViewController : UINavigationController<UIGestureRecognizerDelegate,UINavigationControllerDelegate>
@end
// .m
#import "RCDNavigationViewController.h"
@interface RCDNavigationViewController ()
@end
@implementation RCDNavigationViewController
- (void)viewDidLoad {
[super viewDidLoad];
__weak RCDNavigationViewController *weakSelf = self;
if ([self respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
self.interactivePopGestureRecognizer.delegate = weakSelf;
self.delegate = weakSelf;
self.interactivePopGestureRecognizer.enabled = YES;
}
}
- (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;
}
}
//UIGestureRecognizerDelegate
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer {
if ([gestureRecognizer isEqual:self.interactivePopGestureRecognizer] &&
self.viewControllers.count > 1 &&
[self.visibleViewController isEqual:[self.viewControllers lastObject]]) {
//判断当导航堆栈中存在页面，并且 可见视图 如果不是导航堆栈中的最后一个视图时，就会屏蔽掉滑动返回的手势。此设置是为了避免页面滑动返回时因动画存在延迟所导致的卡死。
return YES;
} else {
return NO;
}
}
@end