#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;
}
