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Various methods for barcode scanning in .NET MAUI
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| <?xml version = "1.0" encoding = "UTF-8" ?> | ||
| <Application xmlns="http://schemas.microsoft.com/dotnet/2021/maui" | ||
| xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" | ||
| xmlns:local="clr-namespace:MauiBarcode" | ||
| x:Class="MauiBarcode.App"> | ||
| <Application.Resources> | ||
| <ResourceDictionary> | ||
| <ResourceDictionary.MergedDictionaries> | ||
| <ResourceDictionary Source="Resources/Styles/Colors.xaml" /> | ||
| <ResourceDictionary Source="Resources/Styles/Styles.xaml" /> | ||
| </ResourceDictionary.MergedDictionaries> | ||
| </ResourceDictionary> | ||
| </Application.Resources> | ||
| </Application> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| namespace MauiBarcode; | ||
|
|
||
| public partial class App : Application | ||
| { | ||
| public App() | ||
| { | ||
| InitializeComponent(); | ||
|
|
||
| MainPage = new AppShell(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| <?xml version="1.0" encoding="UTF-8" ?> | ||
| <Shell | ||
| x:Class="MauiBarcode.AppShell" | ||
| xmlns="http://schemas.microsoft.com/dotnet/2021/maui" | ||
| xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" | ||
| xmlns:local="clr-namespace:MauiBarcode" | ||
| Shell.FlyoutBehavior="Disabled" | ||
| Title="MauiBarcode"> | ||
|
|
||
| <TabBar> | ||
| <ShellContent | ||
| Title="CommunityToolkit MAUI Camera" | ||
| ContentTemplate="{DataTemplate local:CommunityToolkitCameraPage}" | ||
| Route="CommunityToolkitCameraPage" /> | ||
|
|
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| <ShellContent | ||
| Title="ZXing Camera MAUI" | ||
| ContentTemplate="{DataTemplate local:ZxingCameraPage}" | ||
| Route="ZxingCameraPage" /> | ||
|
|
||
| <ShellContent | ||
| IsVisible="{OnPlatform Android=true, Default=false}" | ||
| Title="MLKit Scanner (Android only)" | ||
| ContentTemplate="{DataTemplate local:MainPage}" | ||
| Route="MainPage" /> | ||
| </TabBar> | ||
|
|
||
| </Shell> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| namespace MauiBarcode; | ||
|
|
||
| public partial class AppShell : Shell | ||
| { | ||
| public AppShell() | ||
| { | ||
| InitializeComponent(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| <?xml version="1.0" encoding="utf-8" ?> | ||
| <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui" | ||
| xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" | ||
| xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit" | ||
| x:Class="MauiBarcode.CommunityToolkitCameraPage"> | ||
|
|
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| <Grid> | ||
| <toolkit:CameraView x:Name="ToolkitCameraView" /> | ||
| </Grid> | ||
|
|
||
| </ContentPage> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| namespace MauiBarcode; | ||
|
|
||
| #if WINDOWS | ||
| using Windows.Graphics.Imaging; | ||
| using System.Runtime.InteropServices.WindowsRuntime; | ||
| #endif | ||
| using Camera.MAUI.ZXing; | ||
| using CommunityToolkit.Maui.Alerts; | ||
| using CommunityToolkit.Maui.Core; | ||
| using CommunityToolkit.Maui.Views; | ||
| using Microsoft.Maui.Graphics.Platform; | ||
|
|
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| public partial class CommunityToolkitCameraPage : ContentPage | ||
| { | ||
| private readonly ZXingBarcodeDecoder barcodeReader = new (); | ||
|
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| public CommunityToolkitCameraPage() | ||
| { | ||
| InitializeComponent(); | ||
| } | ||
|
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| protected override async void OnAppearing() | ||
| { | ||
| base.OnAppearing(); | ||
| ToolkitCameraView.MediaCaptured += OnMediaCaptured; | ||
|
|
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| var cameras = await ToolkitCameraView.GetAvailableCameras(CancellationToken.None); | ||
| ToolkitCameraView.SelectedCamera = cameras.FirstOrDefault(x => x.Position != CommunityToolkit.Maui.Core.Primitives.CameraPosition.Front); | ||
|
|
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| await Task.Delay(1000); | ||
| await ToolkitCameraView.StartCameraPreview(CancellationToken.None); | ||
|
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| PeriodicTimer timer = new(TimeSpan.FromMilliseconds(3000)); | ||
| while (await timer.WaitForNextTickAsync()) | ||
| { | ||
| await ToolkitCameraView.CaptureImage(CancellationToken.None); | ||
| } | ||
| } | ||
|
|
||
| protected override void OnDisappearing() | ||
| { | ||
| ToolkitCameraView.MediaCaptured -= OnMediaCaptured; | ||
| base.OnDisappearing(); | ||
| } | ||
|
|
||
| private async void OnMediaCaptured(object? sender, MediaCapturedEventArgs e) | ||
| { | ||
| try | ||
| { | ||
| var image = PlatformImage.FromStream(e.Media); | ||
| #if ANDROID | ||
| var results = barcodeReader.Decode(image.AsBitmap()); | ||
| #elif IOS || MACCATALYST | ||
| var results = barcodeReader.Decode(image.AsUIImage()); | ||
| #elif WINDOWS | ||
| var softwareBitmap = SoftwareBitmap.CreateCopyFromBuffer( | ||
| image.AsBytes().AsBuffer(), | ||
| BitmapPixelFormat.Rgba16, | ||
| (int)image.Width, | ||
| (int)image.Height); | ||
| var results = barcodeReader.Decode(softwareBitmap); | ||
| #else | ||
| var results = new List<BarcodeResult>(); | ||
| #endif | ||
| foreach (var result in results ?? []) | ||
| { | ||
| await MainThread.InvokeOnMainThreadAsync(async () => | ||
| { | ||
| await Toast.Make(result.Text, ToastDuration.Long).Show(); | ||
| }); | ||
| } | ||
| } | ||
| catch (Exception exception) | ||
| { | ||
| Console.WriteLine(exception); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| <?xml version="1.0" encoding="utf-8" ?> | ||
| <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui" | ||
| xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" | ||
| x:Class="MauiBarcode.MainPage"> | ||
|
|
||
| <ScrollView> | ||
| <VerticalStackLayout | ||
| Padding="30,0" | ||
| Spacing="25"> | ||
|
|
||
| <Button | ||
| Text="MLKit Scanner (Android only)" | ||
| Clicked="OnMlKitScannerClicked" | ||
| HorizontalOptions="Fill" /> | ||
| </VerticalStackLayout> | ||
| </ScrollView> | ||
|
|
||
| </ContentPage> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| namespace MauiBarcode; | ||
|
|
||
| using CommunityToolkit.Maui.Alerts; | ||
| using CommunityToolkit.Maui.Core; | ||
|
|
||
| public partial class MainPage : ContentPage | ||
| { | ||
| public MainPage() | ||
| { | ||
| InitializeComponent(); | ||
| } | ||
|
|
||
| private async void OnMlKitScannerClicked(object sender, EventArgs e) | ||
| { | ||
| #if ANDROID | ||
| using var mlkit = new MlKitBarcodeScanner(); | ||
| var barcode = await mlkit.ScanAsync(); | ||
| await MainThread.InvokeOnMainThreadAsync(async () => | ||
| { | ||
| await Toast.Make(barcode is null ? "Error has occurred during barcode scanning" : barcode.RawValue, ToastDuration.Long).Show(); | ||
| }); | ||
| #else | ||
| await Toast.Make("This feature is only available on Android", ToastDuration.Long).Show(); | ||
| #endif | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| <Project Sdk="Microsoft.NET.Sdk"> | ||
|
|
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| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <RootNamespace>MauiBarcode</RootNamespace> | ||
|
|
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| <!-- Display name --> | ||
| <ApplicationTitle>MauiBarcode</ApplicationTitle> | ||
|
|
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| <!-- App Identifier --> | ||
| <ApplicationId>com.vladislavantonyuk.mauibarcode</ApplicationId> | ||
|
|
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| <!-- Versions --> | ||
| <ApplicationDisplayVersion>1.0</ApplicationDisplayVersion> | ||
| <ApplicationVersion>1</ApplicationVersion> | ||
| </PropertyGroup> | ||
|
|
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| <ItemGroup> | ||
| <!-- App Icon --> | ||
| <MauiIcon Include="Resources\AppIcon\appicon.svg" ForegroundFile="Resources\AppIcon\appiconfg.svg" Color="#512BD4" /> | ||
|
|
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| <!-- Splash Screen --> | ||
| <MauiSplashScreen Include="Resources\Splash\splash.svg" Color="#512BD4" BaseSize="128,128" /> | ||
|
|
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| </ItemGroup> | ||
|
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| <ItemGroup Condition="'$(TargetFramework)' == '$(NetVersion)-android'"> | ||
| <PackageReference Include="Xamarin.AndroidX.Collection.Ktx" Version="1.4.0.1" /> | ||
| <PackageReference Include="Xamarin.GooglePlayServices.Code.Scanner" Version="116.1.0.4" /> | ||
| </ItemGroup> | ||
|
|
||
| <ItemGroup> | ||
| <PackageReference Include="Camera.MAUI.ZXing" Version="1.0.0" /> | ||
| <PackageReference Include="CommunityToolkit.Maui.Camera" Version="1.0.2" /> | ||
| <PackageReference Include="CommunityToolkit.Maui" Version="9.0.1" /> | ||
| </ItemGroup> | ||
|
|
||
| </Project> |
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