- (void)viewWillDisappear:(BOOL)animated{
    [super viewWillDisappear:animated];
    [self.navigationController.navigationBar setHidden:NO];
    
    //在其他离开改页面的方法同样加上下面两句代码
    self.isTapBack = YES;
    if([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
        self.navigationController.interactivePopGestureRecognizer.delegate = nil;
    }
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    
    self.isTapBack = NO;
    if([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
        self.navigationController.interactivePopGestureRecognizer.delegate = (id)self;
    }
}

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer
                                      *)gestureRecognizer{
    return self.isTapBack; //YES：允许右滑返回  NO：禁止右滑返回
}