Error Domain=GARSession Code=-3 when I try host cloud anchor about arcore-ios-sdk

[sammcd]

Hello! And sorry you are running into this issue.

That error means that we don't think ARKit is tracking properly, but you already mentioned that have confirmed that it is.

Are you callingself.gSession's update: method with the current frame? We have an example of how to do this in our developer guide here: https://developers.google.com/ar/develop/ios/cloud-anchors-developer-guide-ios under the "Passing ARFrames to the GARSession" section.

[SavinovJr]

yes, I do it like this:

-(void)session:(ARSession *)arSession didUpdateFrame:(ARFrame *)arFrame { [self.gSession update:arFrame error:nil]; }

[SavinovJr]

@sammcd Hi. Do you have any updates/suggestions for this issue?

[sammcd]

Apologies for the slow response time, and thanks for following up!

I reviewed our code for every case that this error message can be returned, and it really looks like our library is not getting ARFrames that are in a good tracking state. Here are the next steps I would take to debug.

1. Confirm that the ARSession's delegate is set and session:didUpdateFrame: is getting called by logging something.
2. NSLog out the ARFrame's tracking state right before you call our update:error: method. I would look to check that the tracking state is good right before your host call.

Please let me know if that helps out at all or if you still get the same error.

[SavinovJr]

@sammcd , Hi. You will smile but I forgot set ARSession's delegate. It was my fault. For now I get the correct cloud anchor in
- (void)session:(GARSession *)session didHostAnchor:(GARAnchor *)anchor

Thanks for your time. I will close it.