<!--
{
  "availability" : [
    "iOS: 11.0.0 -",
    "iPadOS: 11.0.0 -",
    "macCatalyst: 13.1.0 -",
    "tvOS: 11.0.0 -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "UIKit",
  "identifier" : "/documentation/UIKit/UISplitViewController/PrimaryEdge-swift.enum/leading",
  "metadataVersion" : "0.1.0",
  "role" : "Case",
  "symbol" : {
    "kind" : "Case",
    "modules" : [
      "UIKit"
    ],
    "preciseIdentifier" : "c:@E@UISplitViewControllerPrimaryEdge@UISplitViewControllerPrimaryEdgeLeading"
  },
  "title" : "UISplitViewController.PrimaryEdge.leading"
}
-->

# UISplitViewController.PrimaryEdge.leading

Place the primary view controller on the leading edge of the interface.

```
case leading
```

## Discussion

In an interface that is oriented left-to-right, this value corresponds to the left side of the split view interface. For right-to-left interfaces, the leading edge is on the right side.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)