How to setup a CoreML model?

Question

I'm having some problems setting up a Core ML model...

Xcode tells me: "init() is deprecated: Use init(configuration:) instead and handle errors appropriately."

Here is my code:

guard let model = try? VNCoreMLModel(for: MobileNetV2().model) else {
        fatalError("Unable to load the model")
    }
    
    let classificationRequest = VNCoreMLRequest(model: model, completionHandler: classificationCompleteHandler)
    classificationRequest.imageCropAndScaleOption = VNImageCropAndScaleOption.centerCrop
    visionRequests = [classificationRequest]
    
    loopCoreMLUpdate()
}

How can I solve that?

Thanks a lot for your answers!

Loïc

Answer 1

The answer is literally in the error message: don't use the init without arguments, use init(configuration:) to instantiate the model.

let config = MLModelConfiguration()
guard let coreMLModel = try? MobileNetV2(configuration: config),
      let visionModel = try? VNCoreMLModel(for: coreMLModel.model) else {

The reason for this change is that the deprecated init() does not have a way to tell you that loading the model may have failed.