I'm new to Xamarin and this whole .NET, I,m starting a new project and I was creating .NET library 2.0 to put the commun code. I have a need to extract multiple barcode from an image and was using ZXing as demo on Window with full .NET Framework 4.7. Now I would like to port this to Xamarin and I'm having some trouble to integrate it into my library. Here's my project structure:
GF-Trace.Android (Xamarin Android)
GF-Trace (.Net Standard 2.0 lib)
GF-Imaging (.Net Standard 2.0 lib)
I have some hard time to make it work properly. The compiler complain about missing reference.
Severity Code Description Project File Line Suppression State Error Can not resolve reference: `zxing`, referenced by `GF-Trace`. Please add a NuGet package or assembly reference for `zxing`, or remove the reference to `GF-Trace`. GF-Trace.Android
Under UWP, it does compile but when running I get a method missing exception error:
System.MissingMethodException Message=Method not found: 'ZXing.Result ZXing.BarcodeReader.DecodeMultiple(Byte)'. Source=GF-Trace StackTrace: at GF_Trace.Views.XyMeasurementPage.ExtractQRCodeMessageFromImage(Byte bitmap) in ...\GF-Trace\GF-Trace\Views\Debug\XyMeasurementPage.xaml.cs:line 128 ...
So I wonder how I should be doing this? GF-Imaging is a reusable lib that implement function to manipulate images and could do some processing to recover barcode with ZXing. GF-Trace is the common application library that also can use some ZXing types. GF-Trace.Android or GF-Trace.UWP consume the GF-Trace.
The ZXing.Net said it support .Net Standard 2.0 and Xamarin.Android. What is wrong or how does one ensure the function and lib are present for a given platform?
NOTE I did select ZXing.Net and not the mobile version because the image can come from different source and not only from the camera as stand still image. So I tried to avoid the ZXing.Net.Mobile which wrap all into a Form GUI.
Thanks, Maybe I'm doing something wrong into my setup, but I have no clue why it doesn't found the lib or the methods.