mypasob.blogg.se - Mac barcode scanner using camera

#MAC BARCODE SCANNER USING CAMERA FOR MAC#
#MAC BARCODE SCANNER USING CAMERA INSTALL#
#MAC BARCODE SCANNER USING CAMERA FOR ANDROID#
#MAC BARCODE SCANNER USING CAMERA ANDROID#

Public ScannerPageViewModel(INavigationService navigationService) : base(navigationService)Ībove the constructor create a region for properties, I like to make sub regions for Interfaces, Delegate Commands and actual Properties to make my code more readable. public class ScannerPageViewModel : ViewModelBase Now make this class inherit from ViewModelBase, this is our base view model, if you are using the prism templates this will be automatically generated for you. Lets first setup the view model, import the following namespaces: using System Now we need to create a ViewModel for our page, in the ViewModels folder create an empty cs class named ScannerPageViewModel. Now lets create a new Xaml ContentPage called ScannerPage, create this file inside the Views folder. Lets get started by deleting the Main Page (from Views, ViewModels and App). Your NuGet package folders should now look a little like this:

#MAC BARCODE SCANNER USING CAMERA INSTALL#

You should now install the following NuGet packages into all projects (Forms, Android, iOS), I’m using the following versions:

Give the new project a build and run to make sure everything is ok. I use DryIoc but this very much comes down to personal preference! You can choose from the following prism containers: Autofac, DryIoc, Unity.

Select the Prism template named Blank Prism Application (Official). Once you have this extension installed, restart VS Mac and create a new project! You can install this extension by going to: Visual Studio Community > Extensions > Gallery > Search > Prism Prism Template Studio and Developer Toolkit ( ) If you are on windows you will have to create the project yourself, You can use this guide to help setup a new prism project: įor all of you mac users, make sure you have downloaded the following extension for VS Mac: Without further ado, lets get coding! Project Setup

#MAC BARCODE SCANNER USING CAMERA FOR MAC#

I’m going to be working on Visual Studio For Mac (Community Edition), but you should be able to follow along if you are using Visual Studio on Windows. I mentioned them earlier but we are going to be using the following 2 libraries: All of ZXing’s examples are done in code behind which is not ideal! I have found there is not a huge amount of information online (certainly not in Zxing’s docs) about Mobile Scanning using MVVM.

Using the MVVM pattern with the Scanning.

We are going to be using to scan a barcode and implement a proper MVVM pattern using Prism. Overviewīefore we jump into the code lets first talk about what we will be doing today. MacInTheCloud is a great solution for developers without access to a physical mac. If you want to run this on iOS you will NEED a Mac or access to a Mac (through the network).

#MAC BARCODE SCANNER USING CAMERA ANDROID#

The iOS simulator & Android emulators will not give you access to a camera (not even your webcam), so you will need an actual device. There are a few requirements for this guide, mainly that you will need a PHYSICAL DEVICE in order to run a barcode scanner. If you encounter this issue, downgrade your android versions (only) to 2.3.2.

#MAC BARCODE SCANNER USING CAMERA FOR ANDROID#

*Note: Version 2.4.1 of Zxing.Mobile for Android appears to be bugged and won’t scan correctly.

Today I am going to cover how we can have Barcode Scanning in a Xamarin Forms whilst correctly utilising the MVVM pattern.