addAttachment never returns

[WorthSparks]

What can cause addAttachment to never call its completion block?

func addImage(_ image: UIImage, toFeature agsArcGISFeature: AGSArcGISFeature, completion: @escaping ((Error?) -> Void)) {
    agsArcGISFeature.load() { error in
        if let error = error {
            completion(error)
            return
        }

        guard let imageData = image.jpegData(compressionQuality: 0.85) else {
            completion(nil)
            return
        }

        print("Calling addAttachment()")
        agsArcGISFeature.addAttachment(withName: "image.jpg", contentType: "jpg", data: imageData) { agsAttachment, error in
            if let error = error {
                print("addAttachment() completed with error")
                completion(error)
            } else {
                print("addAttachment() completed successfully")
                completion(nil)
            }
        }
    }
}
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In the above code, neither of the print() statements (lines 16 or 19) ever execute. The feature is a loaded feature from a feature service in ArcGIS Online. I feel like I am missing something simple.

[NimeshJarecha · Accepted solution]

I suspect, agsArcGISFeature is getting released before operation completes and callback. To test it, just create a class variable for agsArcGISFeature or add it to a print statement.

print("addAttachment() completed successfully for \(agsArcGISFeature)")

Hope this helps!

Regards,

Nimesh

[WorthSparks]

Wow! That was it. Working like a charm now. Thanks.