UINavigationControllerDelegate make is not work

[weixianlove]

@interface MainNaviVC : UINavigationController
@end

@interface MainNaviVC ()<UINavigationControllerDelegate>
@property (nonatomic, assign) BOOL pushing; //是否正在push

@end

@implementation MainNaviVC

- (void)viewDidLoad {
    [super viewDidLoad];
    self.isMotionEnabled = YES;
//    self.interactivePopGestureRecognizer.delaysTouchesBegan = NO;
    self.delegate = self;
}

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated {
    if (self.pushing) {
        return;
    } else {
        self.pushing = YES;
        NSArray *whiteList = @[NSClassFromString(@"XTAddWebBrowserViewController")]; //可重复push白名单
        
        if (![[super topViewController] isKindOfClass:[viewController class]] || [whiteList containsObject:[viewController class]]) {  // 如果和上一个控制器一样，隔绝此操作
            [super pushViewController:viewController animated:animated];
        }
    }
}

- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
    self.pushing = NO;
}

- (void)dealloc {
    self.delegate = nil;
}

while i use UINavigationControllerDelegate, motion not work

[OrkhanAlikhanov]

self.isMotionEnabled = YES;
self.delegate = self;

Should be in reverse order:

self.delegate = self;
self.isMotionEnabled = YES;

[weixianlove]

I can't push, because this delegate never in

- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
    self.pushing = NO;
}