Question

我一直在使用Xamarin开发一个Android应用程序。直到今天我更新了Xamarin和Android-SDK并且突然之间我得到了以下错误消息：

“初始化任务PropertyGroup时出错：未注册任务PropertyGroup。”

<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProductVersion>10.0.0</ProductVersion>
    <SchemaVersion>2.0</SchemaVersion>
    <ProjectGuid>{BCE0722A-D10F-4FBA-8415-13FA2CCF2ED9}</ProjectGuid>
    <ProjectTypeGuids>{EFBA0AD7-5A72-4C68-AF49-83D382785DCF};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
    <OutputType>Library</OutputType>
    <RootNamespace>InspectAdminClientAndroid</RootNamespace>
    <MonoAndroidResourcePrefix>Resources</MonoAndroidResourcePrefix>
    <MonoAndroidAssetsPrefix>Assets</MonoAndroidAssetsPrefix>
    <AndroidResgenClass>Resource</AndroidResgenClass>
    <AndroidApplication>True</AndroidApplication>
    <AndroidResgenFile>Resources\Resource.designer.cs</AndroidResgenFile>
    <AssemblyName>InspectAdminClientAndroid</AssemblyName>
    <AndroidManifest>Properties\AndroidManifest.xml</AndroidManifest>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug</OutputPath>
    <DefineConstants>DEBUG;</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <ConsolePause>false</ConsolePause>
    <AndroidLinkMode>None</AndroidLinkMode>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <DebugType>full</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\Release</OutputPath>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <ConsolePause>false</ConsolePause>
    <AndroidUseSharedRuntime>false</AndroidUseSharedRuntime>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="System" />
    <Reference Include="System.Xml" />
    <Reference Include="System.Core" />
    <Reference Include="Mono.Android" />
    <Reference Include="Newtonsoft.Json">
      <HintPath>..\..\Downloads\Json50r6\Bin\Portable40\Newtonsoft.Json.dll</HintPath>
    </Reference>
  </ItemGroup>
  <ItemGroup>
    <Compile Include="Resources\Resource.designer.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
    <Compile Include="Activities\LoginActivity.cs" />
    <Compile Include="Activities\CustomerAliasActivity.cs" />
    <Compile Include="Activities\LoadSettingsActivity.cs" />
    <Compile Include="Activities\LoadingObjectsActivity.cs" />
    <Compile Include="Activities\ObjectListActivity.cs" />
    <Compile Include="Activities\ObjectDetailsActivity.cs" />
    <Compile Include="Activities\LoadingInspectionsActivity.cs" />
    <Compile Include="Activities\InspectionListActivity.cs" />
    <Compile Include="Activities\InspectionDetailsActivity.cs" />
    <Compile Include="Activities\AboutActivity.cs" />
    <Compile Include="Activities\ChooseUserActivity.cs" />
  </ItemGroup>
  <ItemGroup>
    <None Include="Resources\AboutResources.txt" />
    <None Include="Assets\AboutAssets.txt" />
    <None Include="Properties\AndroidManifest.xml" />
  </ItemGroup>
  <ItemGroup>
    <AndroidResource Include="Resources\values\Strings.xml" />
    <AndroidResource Include="Resources\layout\Login.axml" />
    <AndroidResource Include="Resources\values\Colors.xml" />
    <AndroidResource Include="Resources\layout\CustomerAlias.axml" />
    <AndroidResource Include="Resources\layout\LoadingObjects.axml" />
    <AndroidResource Include="Resources\layout\ObjectDetails.axml" />
    <AndroidResource Include="Resources\layout\LoadingSettings.axml" />
    <AndroidResource Include="Resources\layout\LoadingInspections.axml" />
    <AndroidResource Include="Resources\layout\InspectionDetails.axml" />
    <AndroidResource Include="Resources\layout\About.axml" />
    <AndroidResource Include="Resources\drawable\bg_property_description.xml" />
    <AndroidResource Include="Resources\drawable\bg_property_position_info.xml" />
    <AndroidResource Include="Resources\drawable\expandablegroup_gradient.xml" />
    <AndroidResource Include="Resources\drawable\expandablegroup_title_gradient.xml" />
    <AndroidResource Include="Resources\drawable\expandablegroup_vertical_gradient.xml" />
    <AndroidResource Include="Resources\drawable\ic_checkbox.xml" />
    <AndroidResource Include="Resources\drawable\ic_radio.xml" />
    <AndroidResource Include="Resources\drawable\login_background.xml" />
    <AndroidResource Include="Resources\drawable\slidingmenu_background.xml" />
    <AndroidResource Include="Resources\drawable\slidingmenu_item_background.xml" />
    <AndroidResource Include="Resources\drawable\slidingmenu_item_color.xml" />
    <AndroidResource Include="Resources\drawable\slidingmenu_item_subtext_color.xml" />
    <AndroidResource Include="Resources\drawable\slidingmenu_item_text_color.xml" />
    <AndroidResource Include="Resources\drawable\slidingmenu_shadows.xml" />
    <AndroidResource Include="Resources\drawable\upgrade_button_background.xml" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_cancel.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_create_inspection.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_create_object.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_delete.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_details.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_done.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_done_holo_light.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_edit.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_get_position.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_messages.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_new_messages.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_object.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_action_refresh.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_checkbox_checked.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_checkbox_unchecked.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_coordinate.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_create_object.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_delete.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_edit.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_image.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_image_missing.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_inspection.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_inspection_list.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_launcher.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_list_finished.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_list_locked.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_list_new.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_list_not_locked.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_list_started.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_list_sync_on.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_list_synchronized.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_list_unsynchronized.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_logout.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_mandatory.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_mandatory_large.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_object.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_object_list.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_radio_checked.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_radio_unchecked.png" />
    <AndroidResource Include="Resources\drawable-hdpi\ic_set_position.png" />
    <AndroidResource Include="Resources\drawable-ldpi\ic_launcher.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_cancel.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_copy.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_create_inspection.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_create_object.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_delete.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_details.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_done.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_done_holo_light.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_edit.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_get_position.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_messages.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_new_messages.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_object.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_paste.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_refresh.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_action_user.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_checkbox_checked.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_checkbox_unchecked.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_coordinate.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_create_object.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_delete.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_edit.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_image.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_image_missing.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_inspection.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_inspection_list.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_launcher.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_list_finished.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_list_locked.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_list_new.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_list_not_locked.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_list_started.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_list_sync_on.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_list_synchronized.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_list_unsynchronized.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_logout.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_mandatory.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_mandatory_large.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_object.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_object_list.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_radio_checked.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_radio_unchecked.png" />
    <AndroidResource Include="Resources\drawable-mdpi\ic_set_position.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_cancel.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_create_inspection.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_create_object.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_delete.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_details.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_done.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_done_holo_light.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_edit.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_get_position.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_messages.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_new_messages.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_object.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_action_refresh.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_checkbox_checked.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_checkbox_unchecked.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_coordinate.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_create_object.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_delete.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_edit.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_image.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_image_missing.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_inspection.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_inspection_list.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_launcher.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_list_finished.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_list_locked.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_list_new.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_list_started.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_list_sync_on.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_list_synchronized.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_list_unsynchronized.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_logout.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_mandatory.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_mandatory_large.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_object.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_object_list.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_radio_checked.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_radio_unchecked.png" />
    <AndroidResource Include="Resources\drawable-xhdpi\ic_set_position.png" />
    <AndroidResource Include="Resources\layout\login_header.xml" />
  </ItemGroup>
  <Import Project="$(MSBuildExtensionsPath)\Novell\Novell.MonoDroid.CSharp.targets" />
  <ItemGroup>
    <ProjectReference Include="..\InspectAdminClientCore\InspectAdminClientCore.csproj">
      <Project>{E37CD97C-F662-48C3-9978-2643BE699997}</Project>
      <Name>InspectAdminClientCore</Name>
    </ProjectReference>
    <ProjectReference Include="..\Core.Database\Core.Database.csproj">
      <Project>{61E35A5F-193A-4EC9-9530-1281EFA2363D}</Project>
      <Name>Core.Database</Name>
    </ProjectReference>
  </ItemGroup>
  <ItemGroup>
    <Folder Include="Activities\" />
    <Folder Include="Resources\Color\" />
    <Folder Include="Resources\drawable\" />
    <Folder Include="Resources\drawable-hdpi\" />
    <Folder Include="Resources\drawable-ldpi\" />
    <Folder Include="Resources\drawable-mdpi\" />
    <Folder Include="Resources\drawable-xhdpi\" />
  </ItemGroup>
</Project>

enter image description here

Answer 1

您需要使用Mono 3.2（或更高版本），因为Xamarin.Android 4.8使用的编译器与之前需要Mono 3.2的版本不同。（Creds去了Cheesebaron）

初始化任务PropertyGroup时出错：未注册任务PropertyGroup

1 个答案: