<!--
{
  "availability" : [
    "iOS: 11.0.0 -",
    "iPadOS: 11.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.13.0 -",
    "tvOS: 11.0.0 -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "MapKit",
  "identifier" : "/documentation/MapKit/MKAnnotationView/CollisionMode-swift.enum",
  "metadataVersion" : "0.1.0",
  "role" : "Enumeration",
  "symbol" : {
    "kind" : "Enumeration",
    "modules" : [
      "MapKit"
    ],
    "preciseIdentifier" : "c:@E@MKAnnotationViewCollisionMode"
  },
  "title" : "MKAnnotationView.CollisionMode"
}
-->

# MKAnnotationView.CollisionMode

Constants that indicates how to interpret the collision frame rectangle of an annotation view.

```
enum CollisionMode
```

## Topics

### Enumeration Cases

[`case rectangle`](/documentation/MapKit/MKAnnotationView/CollisionMode-swift.enum/rectangle)

A constant that indicates that the annotation view uses the full collision frame rectangle for detecting collisions.

[`case circle`](/documentation/MapKit/MKAnnotationView/CollisionMode-swift.enum/circle)

A constant that indicates that the annotation view uses an inscribed circle in the collision frame rectangle to determine collisions.

[`case none`](/documentation/MapKit/MKAnnotationView/CollisionMode-swift.enum/none)

A constant indicating that collisions can’t occur.

[`case rectangle`](/documentation/MapKit/MKAnnotationView/CollisionMode-swift.enum/rectangle)

A constant that indicates that the annotation view uses the full collision frame rectangle for detecting collisions.

[`case circle`](/documentation/MapKit/MKAnnotationView/CollisionMode-swift.enum/circle)

A constant that indicates that the annotation view uses an inscribed circle in the collision frame rectangle to determine collisions.

[`case none`](/documentation/MapKit/MKAnnotationView/CollisionMode-swift.enum/none)

A constant indicating that collisions can’t occur.

### Initializers

[`init?(rawValue: Int)`](/documentation/MapKit/MKAnnotationView/CollisionMode-swift.enum/init(rawValue:))

## Relationships

### Conforms To

[`Sendable`](/documentation/Swift/Sendable)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`Hashable`](/documentation/Swift/Hashable)

[`Equatable`](/documentation/Swift/Equatable)

---

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)