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Viktor Zaika
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‎.gitignore‎

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# Autosave files
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*~
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# build
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[Oo]bj/
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[Bb]in/
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packages/
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TestResults/
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# globs
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Makefile.in
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*.DS_Store
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*.sln.cache
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*.suo
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*.cache
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*.pidb
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*.userprefs
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*.usertasks
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config.log
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config.make
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config.status
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aclocal.m4
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install-sh
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autom4te.cache/
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*.user
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*.tar.gz
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tarballs/
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test-results/
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Thumbs.db
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# Mac bundle stuff
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*.dmg
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*.app
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# resharper
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*_Resharper.*
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*.Resharper
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# dotCover
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*.dotCover
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\.vs/
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‎Acx.Forms.Barcode.Droid/Acx.Forms.Barcode.Droid.csproj‎

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‎Acx.Forms.Barcode.Droid/Acx.Forms.Barcode.Droid.csproj.bak‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectTypeGuids>{EFBA0AD7-5A72-4C68-AF49-83D382785DCF};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
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<ProjectGuid>{F5DC210F-379A-44CA-8FEA-0F4586240525}</ProjectGuid>
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<OutputType>Library</OutputType>
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<RootNamespace>Acx.Forms.Barcode.Droid</RootNamespace>
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<MonoAndroidAssetsPrefix>Assets</MonoAndroidAssetsPrefix>
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<MonoAndroidResourcePrefix>Resources</MonoAndroidResourcePrefix>
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<AndroidResgenClass>Resource</AndroidResgenClass>
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<AndroidResgenFile>Resources\Resource.designer.cs</AndroidResgenFile>
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<AndroidUseLatestPlatformSdk>True</AndroidUseLatestPlatformSdk>
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<AssemblyName>Acx.Forms.Barcode.Droid</AssemblyName>
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<TargetFrameworkVersion>v6.0</TargetFrameworkVersion>
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<ReleaseVersion>0.7.1</ReleaseVersion>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug</OutputPath>
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<DefineConstants>DEBUG;</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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<AndroidLinkMode>None</AndroidLinkMode>
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<ConsolePause>false</ConsolePause>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<Optimize>true</Optimize>
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<OutputPath>bin\Release</OutputPath>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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<AndroidUseSharedRuntime>false</AndroidUseSharedRuntime>
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<ConsolePause>false</ConsolePause>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="System" />
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<Reference Include="System.Xml" />
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<Reference Include="System.Core" />
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<Reference Include="Mono.Android" />
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<Reference Include="Xamarin.Android.Support.v4">
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<HintPath>..\packages\Xamarin.Android.Support.v4.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v4.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Android.Support.Vector.Drawable">
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<HintPath>..\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.Vector.Drawable.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Android.Support.Animated.Vector.Drawable">
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<HintPath>..\packages\Xamarin.Android.Support.Animated.Vector.Drawable.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.Animated.Vector.Drawable.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Android.Support.v7.AppCompat">
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<HintPath>..\packages\Xamarin.Android.Support.v7.AppCompat.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.AppCompat.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Android.Support.v7.RecyclerView">
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<HintPath>..\packages\Xamarin.Android.Support.v7.RecyclerView.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.RecyclerView.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Android.Support.Design">
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<HintPath>..\packages\Xamarin.Android.Support.Design.23.3.0\lib\MonoAndroid43\Xamarin.Android.Support.Design.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Android.Support.v7.CardView">
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<HintPath>..\packages\Xamarin.Android.Support.v7.CardView.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.CardView.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Android.Support.v7.MediaRouter">
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<HintPath>..\packages\Xamarin.Android.Support.v7.MediaRouter.23.3.0\lib\MonoAndroid403\Xamarin.Android.Support.v7.MediaRouter.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Forms.Platform.Android">
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<HintPath>..\packages\Xamarin.Forms.2.3.0.107\lib\MonoAndroid10\Xamarin.Forms.Platform.Android.dll</HintPath>
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</Reference>
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<Reference Include="FormsViewGroup">
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<HintPath>..\packages\Xamarin.Forms.2.3.0.107\lib\MonoAndroid10\FormsViewGroup.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Forms.Core">
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<HintPath>..\packages\Xamarin.Forms.2.3.0.107\lib\MonoAndroid10\Xamarin.Forms.Core.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Forms.Xaml">
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<HintPath>..\packages\Xamarin.Forms.2.3.0.107\lib\MonoAndroid10\Xamarin.Forms.Xaml.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.Forms.Platform">
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<HintPath>..\packages\Xamarin.Forms.2.3.0.107\lib\MonoAndroid10\Xamarin.Forms.Platform.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.GooglePlayServices.Basement">
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<HintPath>..\packages\Xamarin.GooglePlayServices.Basement.29.0.0.1\lib\MonoAndroid41\Xamarin.GooglePlayServices.Basement.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.GooglePlayServices.Base">
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<HintPath>..\packages\Xamarin.GooglePlayServices.Base.29.0.0.1\lib\MonoAndroid41\Xamarin.GooglePlayServices.Base.dll</HintPath>
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</Reference>
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<Reference Include="Xamarin.GooglePlayServices.Vision">
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<HintPath>..\packages\Xamarin.GooglePlayServices.Vision.29.0.0.1\lib\MonoAndroid41\Xamarin.GooglePlayServices.Vision.dll</HintPath>
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</Reference>
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Resources\Resource.designer.cs" />
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<Compile Include="Camera\CameraConfigurator.cs" />
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<Compile Include="Logger\Log.cs" />
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<Compile Include="BarcodeScannerRenderer.cs" />
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<Compile Include="View\AutoFocusCallback.cs" />
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<Compile Include="BarcodeTrackerFactory.cs" />
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<Compile Include="Configuration.cs" />
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<Compile Include="Camera\CameraServiceFactory.cs" />
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<Compile Include="Camera\CameraSourceExtensions.cs" />
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<Compile Include="BarcodeTracker.cs" />
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<Compile Include="Platform.cs" />
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<Compile Include="Camera\CameraService.cs" />
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</ItemGroup>
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<ItemGroup>
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<None Include="Resources\AboutResources.txt" />
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<None Include="packages.config" />
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</ItemGroup>
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<ItemGroup>
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<AndroidResource Include="Resources\values\Strings.xml" />
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</ItemGroup>
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<Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
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<Import Project="..\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\build\Xamarin.Android.Support.Vector.Drawable.targets" Condition="Exists('..\packages\Xamarin.Android.Support.Vector.Drawable.23.3.0\build\Xamarin.Android.Support.Vector.Drawable.targets')" />
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<Import Project="..\packages\Xamarin.Forms.2.3.0.107\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets" Condition="Exists('..\packages\Xamarin.Forms.2.3.0.107\build\portable-win+net45+wp80+win81+wpa81+MonoAndroid10+MonoTouch10+Xamarin.iOS10\Xamarin.Forms.targets')" />
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<Import Project="..\packages\Xamarin.GooglePlayServices.Basement.29.0.0.1\build\Xamarin.GooglePlayServices.Basement.targets" Condition="Exists('..\packages\Xamarin.GooglePlayServices.Basement.29.0.0.1\build\Xamarin.GooglePlayServices.Basement.targets')" />
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<ItemGroup>
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<ProjectReference Include="..\Acx.Forms.Barcode.Pcl\Acx.Forms.Barcode.Pcl.csproj">
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<Project>{677C433A-8C1F-466F-91CA-1181FDF29795}</Project>
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<Name>Acx.Forms.Barcode.Pcl</Name>
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</ProjectReference>
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<ProjectReference Include="..\CameraSourceBindings\CameraSourceBindings.csproj">
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<Project>{8B5FB435-D2A0-45B7-BD04-F23D33D8AE10}</Project>
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<Name>CameraSourceBindings</Name>
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</ProjectReference>
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</ItemGroup>
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<ItemGroup>
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<Folder Include="View\" />
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</ItemGroup>
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</Project>

‎Acx.Forms.Barcode.Droid/BarcodeScannerRenderer.cs‎

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using System;
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using System.ComponentModel;
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using System.Threading.Tasks;
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using Android.Content.PM;
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using Android.Runtime;
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using Android.Views;
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using Acx.Forms.Barcode.Droid;
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using Acx.Forms.Barcode.Droid.Camera;
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using Acx.Forms.Barcode.Droid.Logger;
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using Acx.Forms.Barcode.Droid.View;
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using Acx.Forms.Barcode.Pcl;
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using Acx.Forms.Barcode.Pcl.Logger;
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using Xamarin.Forms;
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using Xamarin.Forms.Platform.Android;
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[assembly: ExportRenderer(typeof(BarcodeScanner), typeof(BarcodeScannerRenderer))]
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namespace Acx.Forms.Barcode.Droid
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{
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public class BarcodeScannerRenderer : ViewRenderer<BarcodeScanner, SurfaceView>, ISurfaceHolderCallback
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{
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private static Configuration config;
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private readonly CameraConfigurator configurator;
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private CameraService cameraServiceHolder;
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private CameraService CameraService {
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get {
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if (null == cameraServiceHolder) {
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var factory = new CameraServiceFactory ();
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cameraServiceHolder = factory.Create (Context, Element, configurator);
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}
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return cameraServiceHolder;
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}
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}
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private Lazy<Platform> platform;
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private Platform Platform {
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get {
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return platform.Value;
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}
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}
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private bool HasValidSurface {
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get {
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return Control?.Holder.Surface.IsValid == true;
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}
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}
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public static void Init ()
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{
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Init (new Configuration ());
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}
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public static void Init (Configuration config)
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{
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BarcodeScannerRenderer.config = config;
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}
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public BarcodeScannerRenderer ()
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{
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configurator = new CameraConfigurator ().SetConfiguration (config);
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platform = new Lazy<Platform> (() => new Platform ());
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}
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public async void SurfaceCreated (ISurfaceHolder holder)
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{
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// Nothing to do.
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}
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public async void SurfaceChanged (ISurfaceHolder holder, global::Android.Graphics.Format format, int width, int height)
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{
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if (!HasValidSurface) {
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return;
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}
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// portrait mode
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if (height > width) {
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CameraService.SetViewSize (height, width);
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} else {
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CameraService.SetViewSize (width, height);
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}
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if (!Element.IsEnabled) {
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return;
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}
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CameraService.HaltPreview ();
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await Task.Run (() => {
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CameraService.StartPreview (holder);
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});
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}
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public void SurfaceDestroyed (ISurfaceHolder holder)
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{
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Element.IsEnabled = false;
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}
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protected override void OnElementChanged (Xamarin.Forms.Platform.Android.ElementChangedEventArgs<BarcodeScanner> e)
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{
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base.OnElementChanged (e);
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if (Element != null && Element.IsEnabled)
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InitializeView();
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}
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protected async override void OnElementPropertyChanged (object sender, PropertyChangedEventArgs e)
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{
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base.OnElementPropertyChanged (sender, e);
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if (e.PropertyName == Xamarin.Forms.VisualElement.IsEnabledProperty.PropertyName) {
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if (Element.IsEnabled) {
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InitializeView();
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}
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if (!Element.IsEnabled) {
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ReleaseCamera ();
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}
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}
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if (e.PropertyName == BarcodeScanner.PreviewActiveProperty.PropertyName) {
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if (Element.PreviewActive) {
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await Task.Run (() => CameraService.StartPreview (Control.Holder));
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}
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if (!Element.PreviewActive) {
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CameraService.HaltPreview ();
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}
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}
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if (e.PropertyName == BarcodeScanner.TorchProperty.PropertyName) {
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if (!Platform.HasFlashPermission) {
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return;
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}
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if (!Platform.HasFlash) {
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return;
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}
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CameraService.ToggleTorch (Element.Torch);
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}
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if (e.PropertyName == BarcodeScanner.BarcodeDecoderProperty.PropertyName) {
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if (Element.BarcodeDecoder) {
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CameraService.StartDecoder ();
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}
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if (!Element.BarcodeDecoder) {
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CameraService.StopDecoder ();
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}
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}
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}
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private void InitializeView()
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{
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if (!Platform.HasCameraPermission) {
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return;
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}
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if (!Platform.HasCamera) {
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return;
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}
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if (!Platform.IsGmsReady) {
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return;
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}
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if (Control != null) {
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ActivatePreview ();
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return;
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}
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var surfaceView = new SurfaceView (Context);
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surfaceView.Holder.AddCallback (this);
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SetNativeControl (surfaceView);
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Element.CameraOpened += async (sender, args) => {
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if (Element.PreviewActive) {
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await Task.Run (() => {
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if (Element.IsEnabled) {
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CameraService.StartPreview (Control.Holder);
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CameraService.ToggleTorch (Element.Torch);
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}
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});
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}
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};
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}
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private async void ActivatePreview()
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{
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if (Element.PreviewActive) {
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await Task.Run (() => {
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if (Element.IsEnabled) {
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CameraService.StartPreview (Control.Holder);
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CameraService.ToggleTorch (Element.Torch);
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}
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});
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}
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}
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protected override void Dispose (bool disposing)
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{
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ReleaseCamera ();
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base.Dispose (disposing);
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}
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private void ReleaseCamera ()
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{
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CameraService?.ReleaseCamera ();
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cameraServiceHolder = null;
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}
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}
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}

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