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How to implement a three-way Split View Controller using Storyboards
— Greg Neumann 2025/12/11 11:36
This is the default main storyboard layout in Xcode 26. To add a three-way NSplitViewController so that there are three panes visible on macOS, I fiest deleted the:
- Window Controller Scene and the
- View Controller Scene
By selecting them in the document outline on the left hand side and pressing the delete key. This then leaves just the Application Scene with it's Main Menu.
Then use the Show Library command (Menu: View/Show Library or click the + character in the bottom toolbar on the RHS. Search for NSSplitViewController as shown …
… and drag it onto the canvas anywhere:
Next, ensure that the Split View Controller is selected in the Document Outline. Then ensure that the Attributes Inspector is visible by clicking on the Hide or Show the Inspectors icon at the top right. The check the flag Is Initial Controller as shown:
Use the Show Library to select a normal ViewController:
and drag that onto the bottom of the Document Outline as shown next:
