如此的隐藏tabbarviewcontroller
HereViewController *hereMC=[[HereViewController alloc]init];
hereMC.hidesBottomBarWhenPushed=YES;
[self.navigationController pushViewController:hereMC animated:YES];
HereViewController *hereMC=[[HereViewController alloc]init];
hereMC.hidesBottomBarWhenPushed=YES;
[self.navigationController pushViewController:hereMC animated:YES];