全屏Pop手势-UINavigationController

#import "BaseNavigationController.h"@interface BaseNavigationController ()@end

@implementation BaseNavigationController

- (void)viewDidLoad {

[super viewDidLoad];

// 1.取出手势View

UIGestureRecognizer *gesture = self.interactivePopGestureRecognizer;

gesture.enabled = false;

UIView *gestureView = gesture.view;

// 2.获取所有的target

id target = [(NSMutableArray *)[gesture valueForKey:@"_targets"] firstObject];

id transition = [target valueForKey:@"_target"];

SEL action = NSSelectorFromString(@"handleNavigationTransition:");

// 3.创建新的手势

UIPanGestureRecognizer *popGes = [[UIPanGestureRecognizer alloc] init];

popGes.maximumNumberOfTouches = 1;

popGes.delegate = self;

[gestureView addGestureRecognizer:popGes];

[popGes addTarget:transition action:action];

}

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

// 其中navigationController还使用了私有变量“_isTransitioning”，用于判断交互是否正在进行中。

// 注意：只有非根控制器才有滑动返回功能，根控制器没有。判断导航控制器是否只有一个子控制器，如果只有一个子控制器，肯定是根控制器

return self.viewControllers.count != 1 && ![[self valueForKey:@"_isTransitioning"] boolValue];

}

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

viewController.hidesBottomBarWhenPushed = YES;

[super pushViewController:viewController animated:animated];

//   启用自定义导航栏和设置leftBarButton后边缘侧滑pop手势消失解决办法

//  边缘返回pop手势

UIGestureRecognizer *gesture = self.interactivePopGestureRecognizer;

gesture.enabled = true;

gesture.delegate = self;

}