<!--
{
  "availability" : [
    "iOS: 27.0.0 -",
    "iPadOS: 27.0.0 -",
    "macCatalyst: 27.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AVSystemRouting",
  "identifier" : "/documentation/AVSystemRouting/AVSystemRouteController-18ns8/supportedExtensionAvailable",
  "metadataVersion" : "0.1.0",
  "role" : "Type Property",
  "symbol" : {
    "kind" : "Type Property",
    "modules" : [
      "AVSystemRouting"
    ],
    "preciseIdentifier" : "s:15AVSystemRouting0A15RouteControllerC27supportedExtensionAvailableSbvpZ"
  },
  "title" : "supportedExtensionAvailable"
}
-->

# supportedExtensionAvailable

A Boolean value that indicates whether a supported system routing extension is available.

```
final class var supportedExtensionAvailable: Bool { get }
```

## Discussion

This property is `true` when the app has declared support for at least one form of
system routing in its `Info.plist` and a matching extension is installed:

- one or more protocols listed under `MDESupportedProtocols` and at least one installed
  extension matches, or
- `MDESupportsUniversalURLPlayback` set to `true`, with an installed extension that
  supports URL playback.

If neither key is declared, or no installed extension matches the declared support,
this property is `false`.

Check this property before attempting to use the routing controller to ensure that the
necessary system support is available for your app’s routing requirements.

---

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)