问题
I have a UITableView object in my view controller and I added the following code inside viewDidAppear::
self.navigationController.hidesBarsOnSwipe = true
The navigation bar is hiding when I scroll up, but when I scroll down it's not coming back.
Do I need to do something else?
回答1:
By default storyboard add tableview top constraint to "Top Layout Guide.Bottom", you need to change the tableview.top constraint to "View.Top"
回答2:
check your constraints for tableview. It's top constraint should be pin with superview's top not with the toplayoutguide's top. I think you have set constraint with toplayoutguide. So, try to change it with superview's top and your issue will be solved.
回答3:
I think you need to uncheck Extended edges- under top bars to align your UITableView with topLayourGuide. Refer the attachment.
来源：https://stackoverflow.com/questions/40019359/hiding-navigation-bar-with-self-navigationcontroller-hidesbarsonswipe-true-hi