在 BaseNavigationColler 里面 设置
self.hidesBottomBarWhenPushed = YES;
如果 上述方法不行 尝试：
//跳转隐藏
-
(void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated{
if (self.childViewControllers.count > 0) {
viewController.hidesBottomBarWhenPushed = YES;}
[super pushViewController:viewController animated:animated];
}
