https://github.com/egbakou/barcodereader
Barcodes reader Project in Xamarin.Froms.
https://github.com/egbakou/barcodereader
barcode-scanner cross-platform qrcode-scanner xamarin
Last synced: 4 months ago
JSON representation
Barcodes reader Project in Xamarin.Froms.
- Host: GitHub
- URL: https://github.com/egbakou/barcodereader
- Owner: egbakou
- Created: 2019-02-20T19:18:05.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2019-03-02T11:44:20.000Z (over 6 years ago)
- Last Synced: 2025-03-21T11:50:34.272Z (7 months ago)
- Topics: barcode-scanner, cross-platform, qrcode-scanner, xamarin
- Language: C#
- Homepage: https://lioncoding.com/2019/02/21/2019-02-21-Concevoir-un-lecteur-de-Code-barres-avec-Xamarin-Forms/
- Size: 7.28 MB
- Stars: 16
- Watchers: 3
- Forks: 6
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
## Barcodes Reader in Xamarin.Forms
### Lioncoding article Link
[Barcodes Reader in Xamarin.Forms](https://lioncoding.com/2019/02/21/2019-02-21-concevoir-un-lecteur-de-code-barres-avec-xamarin-forms/)
### Nuget packages used
| Packages | Version | Use for |
| :----------------------------------------------------------: | :-----: | :------------------: |
| [Autofac](https://www.nuget.org/packages/Autofac/) | 4.9.1 | Inversion of control |
| [ZXing.Net.Mobile](https://www.nuget.org/packages/ZXing.Net.Mobile/) | 2.4.1 | Scanning Barcodes |
| [ZXing.Net.Mobile.Forms](https://www.nuget.org/packages/ZXing.Net.Mobile.Forms/) | 2.4.1 | Scanning Barcodes |
| [Xamarin.Essentials](https://www.nuget.org/packages/Xamarin.Essentials) | 1.0.1 | Sharing scan result |
### Initializations and Configurations
##### Android project
- MainActivity.cs
```c#
protected override void OnCreate(Bundle savedInstanceState)
{
// ...
ZXing.Net.Mobile.Forms.Android.Platform.Init();
Xamarin.Essentials.Platform.Init(this, savedInstanceState);
// ...
}
public override void OnRequestPermissionsResult(int requestCode, string[] permissions, [GeneratedEnum] Android.Content.PM.Permission[] grantResults)
{
global::ZXing.Net.Mobile.Android.PermissionsHandler.OnRequestPermissionsResult(requestCode, permissions, grantResults);
Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);
base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
}
```
- AssemblyInfo.cs (Add permissions for scanning)
```c#
[assembly: UsesPermission(Android.Manifest.Permission.Flashlight)]
[assembly: UsesPermission(Android.Manifest.Permission.Camera)]
```
##### IOS project
- AppDelegate.cs
```c#
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
// ...
ZXing.Net.Mobile.Forms.iOS.Platform.Init();
// ...
}
```
### View source code
```xml
```
### Code behind
```c#
using BarCodeReader.ViewModels;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace BarCodeReader.Views
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class MainMenuView : ContentPage
{
private MainMenuViewModel viewModel;
public MainMenuView()
{
InitializeComponent();
BindingContext = viewModel = new MainMenuViewModel();
RegisterMesssages();
}
private void RegisterMesssages()
{
MessagingCenter.Subscribe(this, "NoScanResultToClear", (m) =>
{
if (m != null)
{
DisplayAlert("Warning !", "No scan result to clear.", "OK");
}
});
MessagingCenter.Subscribe(this, "NoScanResultToShare", (m) =>
{
if (m != null)
{
DisplayAlert("Warning !", "No scan result to share.", "OK");
}
});
}
}
}
```
### View Model code
```c#
using System.Threading.Tasks;
using System.Windows.Input;
using Xamarin.Essentials;
using Xamarin.Forms;
using ZXing.Net.Mobile.Forms;
namespace BarCodeReader.ViewModels
{
public class MainMenuViewModel : BaseViewModel
{
public MainMenuViewModel()
{
Title = "Barcode Reader";
ScanCommand = new Command(async () => await Scannning());
ClearResultCommand = new Command(ClearResult);
ShareResultCommand = new Command(async () => await ShareResult());
}
private async Task ShareText(string text)
{
await Share.RequestAsync(new ShareTextRequest
{
Text = text,
Title = "Share"
});
}
// Share Scan result
private async Task ShareResult()
{
if (string.IsNullOrEmpty(ScanResult))
{
MessagingCenter.Send(this, "NoScanResultToShare");
}
else
{
await ShareText(ScanResult);
}
}
// Clear Scan result
private void ClearResult()
{
if (string.IsNullOrEmpty(ScanResult))
{
MessagingCenter.Send(this, "NoScanResultToClear");
}
else
{
ScanResult = "";
}
}
// Do scanning
private async Task Scannning()
{
var scanPage = new ZXingScannerPage
{
Title = "Scanning...",
BackgroundColor = Color.FromHex("#212223")
};
await App.Current.MainPage.Navigation.PushAsync(scanPage);
scanPage.OnScanResult += (result) =>
{
// Stop scanning
scanPage.IsScanning = false;
// Pop to page and show the result
Device.BeginInvokeOnMainThread(async () =>
{
await App.Current.MainPage.Navigation.PopAsync();
ScanResult = result?.Text;
});
};
}
public ICommand ScanCommand { get; private set; }
public ICommand ClearResultCommand { get; private set; }
public ICommand ShareResultCommand { get; private set; }
private string _scanResult;
public string ScanResult
{
get { return _scanResult; }
set { SetProperty(ref _scanResult, value); }
}
}
}
```
### Screenshots
