iOS 隐藏导航条分割线

// 导航条分割线

@property (nonatomic, strong) UIView *navSeparateView;

// 获取导航条分割线

    UIView *backgroundView = [self.navigationController.navigationBar subviews].firstObject;

    for (UIView *view in backgroundView.subviews) {

        if (CGRectGetHeight([view frame]) <= 1) {

            _navSeparateView = view;

        }

    }

    // 隐藏导航条分割线

    _navSeparateView.hidden = YES;