iOS我的标题，取消和保存按钮去了哪里？

Question

I'm making some changes to my app, but as far as I can tell, they don't involve the NewActivityViewController. Now, the app launches, but my buttons and the title have disappeared from the Nav Bar.

Any suggestions? Thanks!

ScreenShot:

Answer 1

Those items are described on your view controller's navigationItem property. They will only appear if your view controller is displayed within a navigation controller.

In the screenshot you're showing, you are only displaying the view controller (child), you aren't displaying the navigation controller (parent).

Answer 2

Although I can't explain the problem, I resolved it by deleting the NavController then embedding the ViewController in a new NavController. Nothing else was required.

Many thanks @Aaron!