topic Re: Issue Identifying Single Features in Clustered Layers using identifyLayers in Swift Maps SDK Questions

Issue Identifying Single Features in Clustered Layers using identifyLayers

t-schaal — Thu, 25 Sep 2025 12:08:24 GMT

Hello everyone,

We're currently using the identifyLayers function from MapViewProxy to identify features in our layers. This generally works well, but we've noticed an issue with layers where clustering is enabled:

Clicking on a cluster returns the expected result using identifyLayers. ✅
Clicking on a single, non-clustered feature does not return a result. ❌

Is this an issue of identifyLayers, or is there a better way to reliably identify all features, including non-clustered ones, in clustered layers?

We considered using identify(on layer: ArcGIS.Layer) as shown in this example . However, since we have multiple layers, calling this function repeatedly for each layer is not ideal.

Any suggestions or best practices would be appreciated—thanks in advance!

Re: Issue Identifying Single Features in Clustered Layers using identifyLayers

t-schaal — Thu, 25 Sep 2025 14:03:56 GMT

let result = try? await proxy.identifyLayers(...)
-> result is an empty array here if clustering is active for the layer and you click on a single feature that is not clustered

Re: Issue Identifying Single Features in Clustered Layers using identifyLayers

Ting — Thu, 25 Sep 2025 21:36:46 GMT

Thanks for reaching out. Can you let me know the environment and versions you are using? Specifically, are you building with Xcode 26.0 when you see this problem? Thanks.

OS version:

Xcode version:

Target type: (iPhone, Simulator, Mac Catalyst)

Target version:

SDK version:

Re: Issue Identifying Single Features in Clustered Layers using identifyLayers

t-schaal — Fri, 26 Sep 2025 08:37:38 GMT

OS version: currently iOS 26 but it also occured on older OS versions

Xcode version: 16.4

Target type: iPhone

Target version: iPhone 15 Pro

SDK version: 200.8.0

Re: Issue Identifying Single Features in Clustered Layers using identifyLayers

Ting — Wed, 08 Oct 2025 22:51:19 GMT

Want to check in if you have received my DM and been able to run the snippet.

Just want to check, are you setting the `maximumResult` count on the identify method?

Re: Issue Identifying Single Features in Clustered Layers using identifyLayers

t-schaal — Thu, 09 Oct 2025 15:18:48 GMT

Thanks! I found the issue. We were setting maximumResultsPerLayer to nil, which caused problems identifying single features. Leaving it unset fixed the issue for us. 🙂

Re: Issue Identifying Single Features in Clustered Layers using identifyLayers

Ting — Thu, 09 Oct 2025 15:49:41 GMT

Thanks for the update. This might be a bug and we are looking into fixing it on our end. Glad it worked out.

Re: Issue Identifying Single Features in Clustered Layers using identifyLayers

Ting — Wed, 15 Oct 2025 21:48:55 GMT

Some additional information: whether or not the `maximumResults` parameter is provided to the identify method would affect the result. Internally in our codebase, not setting it would give quicker callback and return the unclustered features, while setting it currently doesn't return the unclustered features. This is an edge case we need some more discussion before resolving. For now, not setting `maximumResults` is the workaround.