How to generate dataMatrix using CIFilter?

Question

I am getting error:

Value for key inputBarcodeDescriptor of type CIDataMatrixCodeDescriptor is not yet supported

let string = "tempValue&123"
let data = string.data(using: String.Encoding.ascii, allowLossyConversion: false)
guard let data = data else {
    return nil
}

let descriptor = CIDataMatrixCodeDescriptor(payload: data, rowCount: 1, columnCount: 1, eccVersion: CIDataMatrixCodeDescriptor.ECCVersion(rawValue: 0))        
let inputParameter  = ["inputBarcodeDescriptor": descriptor]        
let datafilter = CIFilter(name: "CIBarcodeGenerator", parameters: inputParameter)        
let image = datafilter?.outputImage        
print(image)

This is irrelevant but shouldn't your `eccVersion` be `.v000`? — matt, Dec 13 '18 at 23:16
I _said_ it was irrelevant. Just better coding practice that's all. — matt, Dec 14 '18 at 02:31

score 2 · Answer 1 · answered Dec 14 '18 at 05:28

2

Well, I think you should just believe this runtime warning. You can't create a barcode using a CIDataMatrixCodeDescriptor; the class is documented but it isn't actually working. Use a different CIBarcodeDescriptor subclass instead (such as CIAztecCodeDescriptor).

answered Dec 14 '18 at 05:28

matt

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There are third-party libraries that can make a data matrix. See https://stackoverflow.com/questions/51311257/present-a-datamatrix-in-ios for suggestions. – matt Dec 14 '18 at 05:35

score 1 · Answer 2 · answered May 12 '22 at 06:40

wow, I've just ran into this issue... in 2022 :D

message is still [api] Value for key inputBarcodeDescriptor of type CIDataMatrixCodeDescriptor is not yet supported

so I filed a feedback, let's hope for the best, as there's no lightweight alternative to generate DataMatrix codes that I could find

How to generate dataMatrix using CIFilter?

2 Answers2