应用构建缓慢-Xamarin for Visual Studio [英] Slow app build - Xamarin for Visual Studio

问题描述

这些天来，我的Xamarin.Android应用程序的构建/部署非常缓慢.我不记得以前这么慢.

The build/deploy of my Xamarin.Android app is painfully slow these days. I cannot remember it being this slow before.

我已启用:

• 使用共享的运行时
• 快速部署

启用或禁用这些设置没有任何区别.在这两种情况下，构建/部署我的应用大约需要2分20秒(最多3分钟！). 使用真实设备或适用于Android的Visual Studio模拟器也无济于事.

Enabling or disabling these settings doesn't make any difference. In both scenarios it takes about 2 minutes and 20 seconds (up to over 3 minutes!) to build/deploy my app. Using a real device or the Visual Studio emulator for Android doesn’t make a difference as well.

为什么会这么慢?我使用的设置不正确吗?

Why could this be so extremely slow? Am I not using the right settings?

更新2

昨天(11月14日)，我将Xamarin.VS更新为4.2.1.58.构建时间没有任何改善.

Yesterday (november 14th) I updated Xamarin.VS to 4.2.1.58. No improvements in build duration.

我们正在使用TeamCity构建应用程序的发行版本，TeamCity统计信息完美地显示了我在说什么.

We are using TeamCity to build release versions of our app, the TeamCity statistics show perfectly what I'm talking about.

在下图中，我选择了上一个季度作为日期范围.查看构建持续时间的大幅增加.现在，我不介意等待3分钟的发布版本，但是在调试时是不可接受的.

In the graph below, I selected last quarter as the date range. See the major increase in build duration. Now, I don't mind waiting 3 minutes for a release build, but it's not acceptable when debugging.

更新3

乔恩，谢谢您的帮助.

同时，我自己对构建日志进行了一些研究，并发现了每个构建任务的持续时间.我发现GetAdditionalResourcesFromAssemblies会花费很多时间.

In the meantime, I have done some research myself in the build logs and found the duration per build task as well. I found that somehow GetAdditionalResourcesFromAssemblies takes a lot of time.

我在应用程序中拥有的资源量并没有发生太大变化，所以这让我开始思考:这可能是我正在使用的另一个程序集.

The amount of resources I have in the app didn't change dramatically, so this got me thinking: could it be another assembly that I'm using..

然后，我签出了修订版1029(这是最后一个构建，大约花了一分钟的时间)，并尝试在更新的环境中对其进行调试.它仍然在1m30s内建成...

I then did a checkout of revision 1029 (which was the last revision that took about a minute to build) and tried to debug it in the updated environment. It still built within 1m30s...

所以:

• 可能不是VS Xamarin更新(否则版本1029也会生成缓慢)
• 部署速度可能不快，在构建过程中持续时间增加了

那么我的应用程序的1029版和1030版之间有什么变化?

So what was changed between revision 1029 and 1030 of my app?

1. 将Xamarin for Visual Studio更新为4.2.0.719
2. 在Android SDK Manager中安装了Android 7.0 SDK平台
3. 在项目属性中将Compile using Android version更改为Android 7.0
4. 将Xamarin.Android支持库从23.4.0.1更新为24.2.1

1. Updated Xamarin for Visual Studio to 4.2.0.719
2. Installed Android 7.0 SDK platform in Android SDK Manager
3. Changed Compile using Android version to Android 7.0 in project properties
4. Updated Xamarin.Android Support Libraries from 23.4.0.1 to 24.2.1

更改4 是为什么我要首先更新的原因，我想使用Bottomsheet，该版本在版本24中得到了改进.但是支持库nuget的目标是Android 7.0，所以我不得不为了能够更新支持库，请执行1-3.

Change 4 was why I updated in the first place, I wanted to use Bottomsheet, which was improved in version 24. But the support library nugets were targeting Android 7.0, so I had to do 1-3 in order to be able to update the support libraries.

导致所有这一切的支持库绑定中是否发生了某些变化?我检查了互联网上是否有其他出现此问题的开发人员，并发现

Could something have changed in the Support Library bindings that caused all this? I checked the internet for other devs having this issue, and found this in the Xamarin forum. Setting AndroidExplicitCrunch build property to true seems to fix it there, but when I tried that, I got another build error.

无论如何，这就是我在此期间尝试过的方法.现在，根据要求，这是我的诊断构建日志:

Anyway, that's what I've tried in the meantime. Now, as requested, here is my diagnostic build log:

1>Project Performance Summary:
1>        3 ms  C:\Development\Apps\FieldService-trunk\OverAllField.XamarinAndroid\OverAll.App.Shared\OverAll.App.Shared.csproj   3 calls
1>                  1 ms  GetTargetPath                              1 calls
1>                  0 ms  GetNativeManifest                          1 calls
1>                  2 ms  GetCopyToOutputDirectoryItems              1 calls
1>        4 ms  C:\Development\Apps\FieldService-trunk\OverAllField.XamarinAndroid\OverAllField.XamarinAndroid.DataLayer\OverAllField.XamarinAndroid.DataLayer.csproj   3 calls
1>                  1 ms  GetTargetPath                              1 calls
1>                  0 ms  GetNativeManifest                          1 calls
1>                  3 ms  GetCopyToOutputDirectoryItems              1 calls
1>    40103 ms  C:\Development\Apps\FieldService-trunk\OverAllField.XamarinAndroid\OverAllField.XamarinAndroid.ServiceClient\OverAllField.XamarinAndroid.ServiceClient.csproj   1 calls
1>
1>Target Performance Summary:
1>        0 ms  Compile                                    1 calls
1>        0 ms  ResolveReferences                          1 calls
1>        0 ms  BclBuildGetTargetPath                      1 calls
1>        0 ms  EnsureNuGetPackageBuildImports             1 calls
1>        0 ms  AfterResGen                                1 calls
1>        0 ms  ResolveCodeAnalysisRuleSet                 1 calls
1>        0 ms  _CreatePropertiesCache                     1 calls
1>        0 ms  _SetTargetFrameworkMonikerAttribute        1 calls
1>        0 ms  BeforeResGen                               1 calls
1>        0 ms  ModifyUnitTestPlatformVersion              1 calls
1>        0 ms  CreateCustomManifestResourceNames          1 calls
1>        0 ms  BclBuildAddProjectReferenceProperties      1 calls
1>        0 ms  _ResolveMonoAndroidFramework               1 calls
1>        0 ms  UpdateAndroidResources                     1 calls
1>        0 ms  CoreBuild                                  1 calls
1>        0 ms  ExpressionBuildExtension                   1 calls
1>        0 ms  _CheckTargetFramework                      1 calls
1>        0 ms  _CopyAppConfigFile                         1 calls
1>        0 ms  Build                                      1 calls
1>        0 ms  DeleteBuildInfoFile                        1 calls
1>        0 ms  CleanXsdCodeGen                            1 calls
1>        0 ms  _SetupInstantRun                           1 calls
1>        0 ms  GetFrameworkPaths                          1 calls
1>        0 ms  DeleteBuildInfoResource                    1 calls
1>        0 ms  _AddAndroidDefines                         1 calls
1>        0 ms  BuildOnlySettings                          1 calls
1>        0 ms  ComputeIntermediateSatelliteAssemblies     1 calls
1>        0 ms  ValidationExtension                        1 calls
1>        0 ms  AfterCompile                               1 calls
1>        0 ms  _CheckInstantRunCondition                  1 calls
1>        0 ms  _GenerateSatelliteAssemblyInputs           1 calls
1>        0 ms  _SetupApplicationJavaClass                 1 calls
1>        0 ms  _SetupDesignTimeBuildForIntellisense       1 calls
1>        0 ms  SetWin32ManifestProperties                 1 calls
1>        0 ms  CreateSatelliteAssemblies                  1 calls
1>        0 ms  _CopySourceItemsToOutputDirectory          1 calls
1>        0 ms  GetInstalledSDKLocations                   1 calls
1>        0 ms  _AddAndroidEnvironmentToCompile            1 calls
1>        0 ms  _CheckForContent                           1 calls
1>        0 ms  _SeparateAppExtensionReferences            1 calls
1>        0 ms  AfterResolveReferences                     1 calls
1>        0 ms  BeforeResolveReferences                    1 calls
1>        0 ms  PrepareResources                           1 calls
1>        0 ms  ResolveSDKReferences                       1 calls
1>        0 ms  _CheckForDeletedResourceFile               1 calls
1>        0 ms  BeforeCompile                              1 calls
1>        0 ms  UpdateAndroidAssets                        1 calls
1>        0 ms  DesignTimeXamlMarkupCompilation            1 calls
1>        0 ms  _AddMultiDexDependencyJars                 1 calls
1>        0 ms  PrepareForRun                              1 calls
1>        0 ms  ResGen                                     1 calls
1>        0 ms  _GenerateAndroidAssetsDir                  1 calls
1>        0 ms  AfterBuild                                 1 calls
1>        0 ms  BclBuildSetRunningFullBuild                1 calls
1>        0 ms  GetNativeManifest                          2 calls
1>        0 ms  ExpandSDKReferences                        1 calls
1>        0 ms  GenerateTargetFrameworkMonikerAttribute    1 calls
1>        0 ms  _GenerateAndroidResourceDir                1 calls
1>        0 ms  CreateManifestResourceNames                1 calls
1>        0 ms  BeforeBuild                                1 calls
1>        0 ms  _GenerateCompileInputs                     1 calls
1>        0 ms  _SetupDesignTimeBuildForBuild              1 calls
1>        0 ms  PrepareResourceNames                       1 calls
1>        0 ms  _AddNativeLibraryArchiveToCompile          1 calls
1>        1 ms  GetCopyToOutputDirectoryXamlAppDefs        3 calls
1>        1 ms  _GenerateJavaDesignerForComponent          1 calls
1>        1 ms  _CollectMonoAndroidOutputs                 1 calls
1>        1 ms  _SetEmbeddedWin32ManifestProperties        1 calls
1>        1 ms  CoreResGen                                 1 calls
1>        1 ms  _ValidateLinkMode                          1 calls
1>        1 ms  _GetLibraryImports                         1 calls
1>        1 ms  _CheckForCompileOutputs                    1 calls
1>        1 ms  _ReadPropertiesCache                       1 calls
1>        1 ms  GetTargetPath                              2 calls
1>        1 ms  _ComputeAndroidResourcePaths               1 calls
1>        1 ms  SetBuildInfoDefaults                       1 calls
1>        1 ms  SplitResourcesByCulture                    1 calls
1>        1 ms  _SplitProjectReferencesByFileExistence     3 calls
1>        1 ms  GenerateCompiledExpressionsTempFile        1 calls
1>        1 ms  BclBuildDetermineReferencesToRedirect      1 calls
1>        1 ms  _GetReferenceAssemblyPaths                 1 calls
1>        1 ms  PreXsdCodeGen                              1 calls
1>        2 ms  _RegisterMdbFilesWithFileWrites            1 calls
1>        2 ms  PrepareForBuild                            1 calls
1>        2 ms  _BuildSdkCache                             1 calls
1>        2 ms  _CalculateAdditionalResourceCacheDirectories   1 calls
1>        2 ms  AssignProjectConfiguration                 1 calls
1>        2 ms  _CreateAdditionalResourceCache             1 calls
1>        2 ms  GetReferenceAssemblyPaths                  1 calls
1>        3 ms  _GetAdditionalResourcesFromAssemblies      1 calls
1>        3 ms  _CheckDuplicateJavaLibraries               1 calls
1>        3 ms  _CollectAdditionalResourceFiles            1 calls
1>        3 ms  _ExtractLibraryProjectImports              1 calls
1>        3 ms  _ComputeAndroidAssetsPaths                 1 calls
1>        3 ms  AssignTargetPaths                          3 calls
1>        3 ms  CopyFilesToOutputDirectory                 1 calls
1>        4 ms  _ValidateResourceCache                     1 calls
1>        4 ms  _ValidateAndroidPackageProperties          1 calls
1>        5 ms  IncrementalClean                           1 calls
1>        7 ms  _ResolveMonoAndroidSdks                    1 calls
1>        9 ms  _CheckForInvalidConfigurationAndPlatform   3 calls
1>       10 ms  GetCopyToOutputDirectoryItems              3 calls
1>       11 ms  _CopyFilesMarkedCopyLocal                  1 calls
1>       11 ms  _CleanGetCurrentAndPriorFileWrites         1 calls
1>       12 ms  _AddLibraryProjectsEmbeddedResourceToProject   1 calls
1>       18 ms  ImplicitlyExpandDesignTimeFacades          1 calls
1>       29 ms  _BuildLibraryImportsCache                  1 calls
1>       41 ms  ResolveProjectReferences                   1 calls
1>       70 ms  _SetLatestTargetFrameworkVersion           1 calls
1>      114 ms  _ResolveLibraryProjectImports              1 calls
1>      138 ms  ResolveAssemblyReferences                  1 calls
1>      207 ms  _UpdateAndroidResgen                       1 calls
1>      356 ms  _GetPrimaryCpuAbi                          1 calls
1>      803 ms  CoreCompile                                1 calls
1>    38202 ms  _BuildAdditionalResourcesCache             1 calls
1>
1>Task Performance Summary:
1>        0 ms  CreateCSharpManifestResourceName           1 calls
1>        0 ms  Delete                                     2 calls
1>        0 ms  FindAppConfigFile                          1 calls
1>        0 ms  ResolveCodeAnalysisRuleSet                 1 calls
1>        0 ms  CallTarget                                 1 calls
1>        0 ms  ResolveNonMSBuildProjectOutput             1 calls
1>        0 ms  AssignCulture                              1 calls
1>        1 ms  GetFrameworkPath                           1 calls
1>        1 ms  GetAndroidPackageName                      1 calls
1>        1 ms  AssignProjectConfiguration                 1 calls
1>        1 ms  ReadImportedLibrariesCache                 1 calls
1>        1 ms  ReadLinesFromFile                          2 calls
1>        1 ms  GetAppSettingsDirectory                    1 calls
1>        1 ms  AssignTargetPath                          18 calls
1>        1 ms  CreateTemporaryDirectory                   1 calls
1>        1 ms  GetReferenceAssemblyPaths                  2 calls
1>        2 ms  Message                                   20 calls
1>        2 ms  CalculateAdditionalResourceCacheDirectories   1 calls
1>        2 ms  GetJavaPlatformJar                         1 calls
1>        2 ms  MakeDir                                    2 calls
1>        2 ms  WriteLinesToFile                           1 calls
1>        2 ms  ConvertToAbsolutePath                      1 calls
1>        3 ms  RemoveDuplicates                           2 calls
1>        3 ms  CopyIfChanged                              1 calls
1>        3 ms  CheckDuplicateJavaLibraries                1 calls
1>        3 ms  AndroidComputeResPaths                     2 calls
1>        3 ms  ReadLibraryProjectImportsCache             1 calls
1>        3 ms  CreateProperty                            41 calls
1>        4 ms  CopyGeneratedJavaResourceClasses           1 calls
1>        4 ms  GetExtraPackages                           1 calls
1>        4 ms  GetAndroidDefineConstants                  1 calls
1>        4 ms  CreateAndroidResourceStamp                 1 calls
1>        5 ms  FindUnderPath                              5 calls
1>        5 ms  ReadAdditionalResourcesFromAssemblyCache   2 calls
1>        5 ms  CreateResgenManifest                       1 calls
1>        6 ms  CreateItem                                23 calls
1>        6 ms  RemoveDirFixed                             1 calls
1>       12 ms  CreateManagedLibraryResourceArchive        1 calls
1>       14 ms  Copy                                       3 calls
1>       16 ms  ConvertResourcesCases                      1 calls
1>       21 ms  GenerateResourceDesigner                   1 calls
1>       28 ms  GetImportedLibraries                       1 calls
1>       49 ms  MSBuild                                    3 calls
1>       49 ms  ReadResolvedSdksCache                      1 calls
1>      114 ms  ResolveLibraryProjectImports               1 calls
1>      137 ms  ResolveAssemblyReference                   1 calls
1>      142 ms  Aapt                                       1 calls
1>      347 ms  GetPrimaryCpuAbi                           1 calls
1>      792 ms  Csc                                        1 calls
1>    38201 ms  GetAdditionalResourcesFromAssemblies       1 calls
1>
1>Build succeeded.
1>
1>Time Elapsed 00:00:40.09

还有第二个摘要(日志以某种方式包含这些摘要中的2个)，但是我不能在问题中包括它，因为它会超出正文字符的限制. 第二个摘要的较小版本:

There is a second summary (the log has 2 of these summaries somehow), but I can't include it in the question, because it would exceed the body character limit. Smaller version of the second summary:

2>Project Performance Summary:
2>        6 ms  C:\Development\Apps\FieldService-trunk\OverAllField.XamarinAndroid\OverAll.App.Shared\OverAll.App.Shared.csproj   5 calls
2>                  0 ms  GetTargetPath                              1 calls
2>                  0 ms  GetNativeManifest                          1 calls
2>                  1 ms  GetCopyToOutputDirectoryItems              1 calls
2>                  5 ms  GetBuiltProjectOutputRecursive             2 calls
2>        9 ms  C:\Development\Apps\FieldService-trunk\OverAllField.XamarinAndroid\OverAllField.XamarinAndroid.BarcodeScanner\OverAllField.XamarinAndroid.BarcodeScanner.csproj   4 calls
2>                  0 ms  GetTargetPath                              1 calls
2>                  2 ms  GetNativeManifest                          1 calls
2>                  3 ms  GetCopyToOutputDirectoryItems              1 calls
2>                  4 ms  GetBuiltProjectOutputRecursive             1 calls
2>       17 ms  C:\Development\Apps\FieldService-trunk\OverAllField.XamarinAndroid\OverAllField.XamarinAndroid.DataLayer\OverAllField.XamarinAndroid.DataLayer.csproj   5 calls
2>                  9 ms  GetTargetPath                              1 calls
2>                  1 ms  GetNativeManifest                          1 calls
2>                  2 ms  GetCopyToOutputDirectoryItems              1 calls
2>                  5 ms  GetBuiltProjectOutputRecursive             2 calls
2>       46 ms  C:\Development\Apps\FieldService-trunk\OverAllField.XamarinAndroid\OverAllField.XamarinAndroid.ServiceClient\OverAllField.XamarinAndroid.ServiceClient.csproj   4 calls
2>                 21 ms  GetTargetPath                              1 calls
2>                  0 ms  GetNativeManifest                          1 calls
2>                  2 ms  GetCopyToOutputDirectoryItems              1 calls
2>                 23 ms  GetBuiltProjectOutputRecursive             1 calls
2>    87736 ms  C:\Development\Apps\FieldService-trunk\OverAllField.XamarinAndroid\OverAllField.Android\OverAllField.XamarinAndroid.csproj   1 calls

第二个目标效果摘要:(删除了所有< 1000毫秒以减少字符)

Second Target Performance Summary: (removed anything <1000 ms to reduce chars)

2>     1955 ms  _GenerateJavaStubs                         1 calls
2>     3083 ms  _CreateBaseApk                             1 calls
2>     3467 ms  _UpdateAndroidResgen                       1 calls
2>     8944 ms  _CompileToDalvikWithDx                     1 calls
2>    66321 ms  _BuildAdditionalResourcesCache             1 calls

第二项任务性能摘要:(同样，删除了所有< 1000毫秒以减少字符)

Second Task Performance Summary: (again, removed anything <1000 ms to reduce chars)

2>     1245 ms  GenerateJavaStubs                          1 calls
2>     2334 ms  ConvertResourcesCases                      3 calls
2>     4637 ms  Aapt                                       2 calls
2>     8941 ms  CompileToDalvik                            1 calls
2>    66320 ms  GetAdditionalResourcesFromAssemblies       1 calls
2>
2>Build succeeded.
2>
2>Time Elapsed 00:01:27.73

完整的诊断构建日志此处

更新4

具有Android支持版本23的完整诊断构建日志这里

Full diagnostic build log with Android support version 23 here

构建时间之间存在显着差异. 支持版本24:

There is a significant difference between the build times. Support version 24:

1>Project Performance Summary:
1>    40103 ms  C:\Development\Apps\trunk\App.Droid\App.Droid.ServiceClient\App.Droid.ServiceClient.csproj   1 calls
...
2>Project Performance Summary:
2>    87736 ms  C:\Development\Apps\trunk\App.Droid\App.Droid\App.Droid.csproj   1 calls

支持版本23:

1>Project Performance Summary:
1>      962 ms  C:\Development\Apps\trunk-r1029\App.Droid\App.Droid.ServiceClient\App.Droid.ServiceClient.csproj   1 calls
2>Project Performance Summary:
2>    18214 ms  C:\Development\Apps\trunk-r1029\App.Droid\App.Droid\App.Droid.csproj   1 calls

两者均使用目标Android 7.0和相同的Xamarin版本构建，唯一的区别是Android支持库版本.这不是一个巨大的增长吗?

Both are built with target Android 7.0 and the same Xamarin version, the only difference is the Android Support library version. Isn't that a huge increase?

提前谢谢！

推荐答案

尽管这是一个非常棘手"的问题，因为构建时间可能取决于许多不同的因素，但我可以引导您逐步确定 是什么原因导致延迟.在大多数情况下，这通常是由于未优化的Resources导致的.这可以是真正应针对移动设备进行优化的原始图像/音频/视频之类的资源.

Although this is a very "tough" question to answer as build times can be dependent on many different factors, I can walk you through ways to determine what in your build is causing the delay. In most cases it's typically because of non-optimized Resources. This can be resources like raw images/audio/video that really should be optimized for mobile.

关于您提到的实验性功能，您可以在此处查看发行说明:

As for the experimental functionality you mentioned, you can view the release notes here:

https://developer.xamarin. com/releases/android/xamarin.android_7/xamarin.android_7.0/#Improved_Fast_Deployment

注意:这是实验性的，因此不能保证它将足够稳定以用于生产.

Note: This is experimental, thus it does not guarantee it will be stable enough to use in production.

对于构建时间"，我们需要知道您的项目中的瓶颈所在.为此，您需要在build-agent的命令中启用Diagnostic Build Output.使用MSBuild通过以下方式非常简单:

As for Build Times, we need to know where the bottleneck is within your project. To do this, you need to enable Diagnostic Build Output in your build-agent's command. This is pretty simple with MSBuild via:

/v:diag或/verbosity:diagnostic(或您想要的任何组合)

/v:diag or /verbosity:diagnostic (Or whatever combination you wanted)

和

/clp:PerformanceSummary-它将告诉使用每个任务的执行时间

/clp:PerformanceSummary - Which will tell use the performance timings of each task

https://msdn.microsoft.com/en-us/library/ms164311.aspx

EX::构建文件->新的Android项目:

EX: Building a File->New Android Project:

1>Project Performance Summary:
1>     4087 ms  c:\users\dougl\documents\visual studio 2015\Projects\App26\App26\App26.csproj   1 calls
1>               4087 ms  Rebuild                                    1 calls
1>
1>Target Performance Summary:
1>        0 ms  GetCopyToOutputDirectoryXamlAppDefs        1 calls
1>        0 ms  BeforeRebuild                              1 calls
1>        0 ms  PrepareResources                           1 calls
1>        0 ms  _DefineBuildTargetAbis                     1 calls
1>        0 ms  UpdateAndroidAssets                        1 calls
1>        0 ms  AfterBuild                                 1 calls
1>        0 ms  AfterCompile                               1 calls
1>        0 ms  BeforeCompile                              1 calls
1>        0 ms  ExpressionBuildExtension                   1 calls
1>        0 ms  _GenerateCompileInputs                     1 calls
1>        0 ms  ResolveCodeAnalysisRuleSet                 1 calls
1>        0 ms  _LinkAssemblies                            1 calls
1>        0 ms  GetTargetPath                              1 calls
1>        0 ms  Build                                      1 calls
1>        0 ms  GenerateCompiledExpressionsTempFile        1 calls
1>        0 ms  _CopyConfigFiles                           1 calls
1>        0 ms  Compile                                    1 calls
1>        0 ms  Rebuild                                    1 calls
1>        0 ms  ModifyUnitTestPlatformVersion              1 calls
1>        0 ms  _RegisterMdbFilesWithFileWrites            1 calls
1>        0 ms  _CheckForCompileOutputs                    1 calls
1>        0 ms  _SetupDesignTimeBuildForIntellisense       1 calls
1>        0 ms  _SetTargetFrameworkMonikerAttribute        1 calls
1>        0 ms  _GenerateAndroidAssetsDir                  1 calls
1>        0 ms  _AddMultiDexDependencyJars                 1 calls
1>        0 ms  AfterResolveReferences                     1 calls
1>        0 ms  UpdateAndroidResources                     1 calls
1>        0 ms  _CheckInstantRunCondition                  1 calls
1>        0 ms  CleanPublishFolder                         1 calls
1>        0 ms  _CheckTargetFramework                      1 calls
1>        0 ms  _CollectMonoAndroidOutputs                 1 calls
1>        0 ms  _CopySourceItemsToOutputDirectory          1 calls
1>        0 ms  CompileRdlFiles                            1 calls
1>        0 ms  _CreateAdditionalResourceCache             4 calls
1>        0 ms  DesignTimeXamlMarkupCompilation            1 calls
1>        0 ms  AfterRebuild                               1 calls
1>        0 ms  _SeparateAppExtensionReferences            1 calls
1>        0 ms  ExpandSDKReferences                        1 calls
1>        0 ms  _ReadPropertiesCache                       1 calls
1>        0 ms  AfterResGen                                1 calls
1>        0 ms  CleanReferencedProjects                    1 calls
1>        0 ms  _CollectPCLPdbFiles                        1 calls
1>        0 ms  Clean                                      1 calls
1>        0 ms  SetWin32ManifestProperties                 1 calls
1>        0 ms  ResolveSDKReferences                       1 calls
1>        0 ms  CreateSatelliteAssemblies                  1 calls
1>        0 ms  DeleteBuildInfoResource                    1 calls
1>        0 ms  _ResolveMonoAndroidFramework               1 calls
1>        0 ms  PrepareResourceNames                       1 calls
1>        0 ms  _SetupInstantRun                           1 calls
1>        0 ms  _SetupDesignTimeBuildForBuild              1 calls
1>        0 ms  CoreBuild                                  1 calls
1>        0 ms  _CheckForDeletedResourceFile               1 calls
1>        0 ms  GetFrameworkPaths                          1 calls
1>        0 ms  _ValidateLinkMode                          1 calls
1>        0 ms  DeleteBuildInfoFile                        1 calls
1>        0 ms  _CollectPCLMdbFiles                        1 calls
1>        0 ms  _CompileDex                                1 calls
1>        0 ms  GetInstalledSDKLocations                   1 calls
1>        0 ms  BeforeClean                                1 calls
1>        0 ms  BuildOnlySettings                          1 calls
1>        0 ms  _ValidateResourceCache                     1 calls
1>        0 ms  BeforeResolveReferences                    1 calls
1>        0 ms  _CheckForContent                           1 calls
1>        0 ms  BeforeResGen                               1 calls
1>        0 ms  PrepareRdlFiles                            1 calls
1>        0 ms  AfterClean                                 1 calls
1>        0 ms  _SetupApplicationJavaClass                 1 calls
1>        0 ms  ValidationExtension                        1 calls
1>        0 ms  _IncludeInstanceRunReference               1 calls
1>        0 ms  ResolveReferences                          1 calls
1>        0 ms  CreateCustomManifestResourceNames          1 calls
1>        0 ms  ResGen                                     1 calls
1>        0 ms  BeforeBuild                                1 calls
1>        1 ms  _SplitProjectReferencesByFileExistence     1 calls
1>        1 ms  _GenerateSatelliteAssemblyInputs           1 calls
1>        1 ms  PrepareForRun                              1 calls
1>        1 ms  CleanXsdCodeGen                            1 calls
1>        1 ms  GenerateTargetFrameworkMonikerAttribute    1 calls
1>        1 ms  ResolveProjectReferences                   1 calls
1>        1 ms  AssignTargetPaths                          1 calls
1>        1 ms  _CreateIntermediateAssembliesDir           1 calls
1>        1 ms  GetCopyToOutputDirectoryItems              1 calls
1>        1 ms  PreXsdCodeGen                              1 calls
1>        1 ms  _GetReferenceAssemblyPaths                 1 calls
1>        1 ms  CoreResGen                                 1 calls
1>        1 ms  _CleanGeneratedDeploymentFiles             1 calls
1>        1 ms  SetBuildInfoDefaults                       1 calls
1>        1 ms  AssignProjectConfiguration                 1 calls
1>        1 ms  _CreatePackageWorkspace                    1 calls
1>        1 ms  _GetMonoPlatformJarPath                    1 calls
1>        1 ms  PrepareForBuild                            1 calls
1>        1 ms  _CalculateAdditionalResourceCacheDirectories   1 calls
1>        1 ms  _ComputeAndroidResourcePaths               1 calls
1>        1 ms  _SetEmbeddedWin32ManifestProperties        1 calls
1>        1 ms  _GetAddOnPlatformLibraries                 1 calls
1>        1 ms  _GetLibraryImports                         1 calls
1>        1 ms  SplitResourcesByCulture                    1 calls
1>        1 ms  GetReferenceAssemblyPaths                  1 calls
1>        1 ms  _CheckProjectItems                         1 calls
1>        1 ms  _AdjustJavacVersionArguments               1 calls
1>        1 ms  _CleanGeneratedDebuggingFiles              1 calls
1>        2 ms  _PrepareAssemblies                         1 calls
1>        2 ms  _FindJavaStubFiles                         1 calls
1>        2 ms  _ExtractLibraryProjectImports              1 calls
1>        2 ms  _StripEmbeddedLibraries                    1 calls
1>        2 ms  _CleanGetCurrentAndPriorFileWrites         1 calls
1>        2 ms  _GetAdditionalResourcesFromAssemblies      1 calls
1>        2 ms  _FindCompiledJavaFiles                     1 calls
1>        2 ms  _CheckDuplicateJavaLibraries               1 calls
1>        2 ms  _AddLibraryProjectsEmbeddedResourceToProject   1 calls
1>        3 ms  _ComputeAndroidAssetsPaths                 1 calls
1>        3 ms  CopyFilesToOutputDirectory                 1 calls
1>        3 ms  CoreClean                                  1 calls
1>        3 ms  _CollectPdbFiles                           1 calls
1>        3 ms  GetBuiltProjectOutputRecursive             1 calls
1>        3 ms  _CollectConfigFiles                        1 calls
1>        3 ms  _ValidateAndroidPackageProperties          1 calls
1>        3 ms  _WriteResolvedAssemblies                   1 calls
1>        4 ms  _CreatePropertiesCache                     1 calls
1>        4 ms  _ResolveMonoAndroidSdks                    1 calls
1>        4 ms  _AddDebugStaticResources                   1 calls
1>        4 ms  _BuildLibraryImportsCache                  1 calls
1>        4 ms  _CollectMdbFiles                           1 calls
1>        5 ms  _CheckForInvalidConfigurationAndPlatform   1 calls
1>        7 ms  _ResolveSatellitePaths                     1 calls
1>        7 ms  _GeneratePackageManagerJava                1 calls
1>        8 ms  _DetermineJavaLibrariesToCompile           1 calls
1>        9 ms  IncrementalClean                           1 calls
1>       10 ms  _AddStaticResources                        1 calls
1>       11 ms  _CleanMonoAndroidIntermediateDir           1 calls
1>       11 ms  _GenerateAndroidResourceDir                1 calls
1>       12 ms  _CleanMsymArchive                          1 calls
1>       18 ms  _SetLatestTargetFrameworkVersion           1 calls
1>       20 ms  ResolveAssemblyReferences                  1 calls
1>       27 ms  ImplicitlyExpandDesignTimeFacades          1 calls
1>       30 ms  _BuildSdkCache                             1 calls
1>       35 ms  _ConvertPdbFiles                           1 calls
1>       45 ms  _CheckTargetFrameworks                     1 calls
1>       46 ms  _ResolveLibraryProjectImports              1 calls
1>       52 ms  _CreateBaseApk                             1 calls
1>       66 ms  _BuildAdditionalResourcesCache             1 calls
1>       72 ms  _CopyMdbFiles                              1 calls
1>       78 ms  _ResolveAssemblies                         1 calls
1>      115 ms  _UpdateAndroidResgen                       1 calls
1>      167 ms  _GenerateJavaStubs                         1 calls
1>      189 ms  _GetPrimaryCpuAbi                          1 calls
1>      453 ms  _CopyIntermediateAssemblies                1 calls
1>      515 ms  _LinkAssembliesNoShrink                    1 calls
1>      657 ms  _CompileToDalvikWithDx                     1 calls
1>      664 ms  _CompileJava                               1 calls
1>      677 ms  CoreCompile                                1 calls
1>
1>Task Performance Summary:
1>        0 ms  CallTarget                                 1 calls
1>        0 ms  MSBuild                                    1 calls
1>        0 ms  ResolveCodeAnalysisRuleSet                 1 calls
1>        0 ms  ReadLinesFromFile                          2 calls
1>        0 ms  GetFrameworkPath                           1 calls
1>        0 ms  FindAppConfigFile                          1 calls
1>        0 ms  AssignCulture                              1 calls
1>        1 ms  GetAppSettingsDirectory                    1 calls
1>        1 ms  ConvertToAbsolutePath                      1 calls
1>        1 ms  RemoveDuplicates                           3 calls
1>        1 ms  AssignTargetPath                           6 calls
1>        1 ms  CollectLibraryAssets                       1 calls
1>        1 ms  AssignProjectConfiguration                 1 calls
1>        1 ms  GetMonoPlatformJar                         1 calls
1>        1 ms  CalculateAdditionalResourceCacheDirectories   1 calls
1>        1 ms  CreateTemporaryDirectory                   2 calls
1>        1 ms  GetAndroidDefineConstants                  1 calls
1>        1 ms  GetAddOnPlatformLibraries                  1 calls
1>        1 ms  ReadImportedLibrariesCache                 1 calls
1>        1 ms  ReadAdditionalResourcesFromAssemblyCache   1 calls
1>        1 ms  CheckProjectItems                          1 calls
1>        1 ms  GetReferenceAssemblyPaths                  2 calls
1>        1 ms  AdjustJavacVersionArguments                1 calls
1>        2 ms  FindUnderPath                              7 calls
1>        2 ms  Message                                   17 calls
1>        2 ms  ReadLibraryProjectImportsCache             1 calls
1>        2 ms  MakeDir                                    6 calls
1>        2 ms  CreateAndroidResourceStamp                 1 calls
1>        2 ms  CreateProperty                            42 calls
1>        2 ms  CopyIfChanged                              1 calls
1>        2 ms  GetAndroidPackageName                      2 calls
1>        2 ms  GetJavaPlatformJar                         1 calls
1>        2 ms  GetExtraPackages                           2 calls
1>        2 ms  CheckDuplicateJavaLibraries                1 calls
1>        2 ms  CreateManagedLibraryResourceArchive        1 calls
1>        3 ms  RemoveUnknownFiles                         1 calls
1>        3 ms  AndroidComputeResPaths                     2 calls
1>        3 ms  CreateResgenManifest                       1 calls
1>        4 ms  GetImportedLibraries                       1 calls
1>        4 ms  GetFilesThatExist                          3 calls
1>        6 ms  Touch                                      7 calls
1>        6 ms  CopyGeneratedJavaResourceClasses           2 calls
1>        7 ms  CreateItem                                20 calls
1>        7 ms  GeneratePackageManagerJava                 1 calls
1>        7 ms  DetermineJavaLibrariesToCompile            1 calls
1>        8 ms  Delete                                    28 calls
1>       10 ms  CopyResource                               4 calls
1>       11 ms  RemoveDirFixed                             5 calls
1>       12 ms  WriteLinesToFile                           5 calls
1>       17 ms  ReadResolvedSdksCache                      1 calls
1>       27 ms  ResolveAssemblyReference                   2 calls
1>       29 ms  GenerateResourceDesigner                   1 calls
1>       29 ms  ResolveSdks                                1 calls
1>       29 ms  ConvertResourcesCases                      3 calls
1>       35 ms  ConvertDebuggingFiles                      1 calls
1>       45 ms  CheckTargetFrameworks                      1 calls
1>       45 ms  ResolveLibraryProjectImports               1 calls
1>       52 ms  CopyMdbFiles                               1 calls
1>       65 ms  GetAdditionalResourcesFromAssemblies       1 calls
1>       77 ms  ResolveAssemblies                          1 calls
1>       92 ms  Aapt                                       2 calls
1>      161 ms  GenerateJavaStubs                          1 calls
1>      186 ms  GetPrimaryCpuAbi                           1 calls
1>      479 ms  Copy                                       7 calls
1>      513 ms  LinkAssemblies                             1 calls
1>      655 ms  CompileToDalvik                            1 calls
1>      660 ms  Csc                                        1 calls
1>      664 ms  Javac                                      1 calls
1>
1>Build succeeded.
1>
1>Time Elapsed 00:00:04.08

请注意，我们可以告知此构建过程花费了多长时间: 4秒.但是，这并不能解决您的问题，而是使用类似的日志，然后我们可以调查Target或Task并找出您的项目遇到的瓶颈.我的猜测是aapt，但这仅仅是因为即使Android Studio也会挂在这里，因为该工具位于Android SDK内部，并且负责打包android资产.

Notice that we can tell how long this build took: 4 seconds. However that doesn't answer your case, but with a proper log like this, we can then investigate that Target or Task and figure out what your project is bottlenecking on. My guess would be aapt, but that's just because even Android Studio would hang here as this tooling is inside the Android SDK and it responsible for packaging android assets.

该构建版本似乎花费了大约2分钟的时间才能构建2个项目.一个在C:\Development\Apps\trunk\App.Droid\App.Droid.ServiceClient\App.Droid.ServiceClient.csproj中，另一个在C:\Development\Apps\trunk\App.Droid\App.Droid\App.Droid.csproj中(分别为40/87秒).对于具有如此多的Android支持/Google Play第三方依赖关系的项目，这似乎很正常.您可以搜索字符串Task "GetAdditionalResourcesFromAssemblies以显示6个定义该位置的地方.由于有2个Android项目，因此这里有2个任务被调用.

It looks like this build took ~2 minutes to build the 2 projects. One being in C:\Development\Apps\trunk\App.Droid\App.Droid.ServiceClient\App.Droid.ServiceClient.csproj and the other in C:\Development\Apps\trunk\App.Droid\App.Droid\App.Droid.csproj (40 / 87 seconds respectively). This seems quite normal for a project with this many third party dependencies to Android Support / Google Play. You can search the string Task "GetAdditionalResourcesFromAssemblies to show 6 places where this is defined. There are 2 Tasks being invoked here due to the 2 Android projects.

可能需要对具有这么多外部依赖项的Android Studio项目进行比较并比较时间.我确实知道，我们目前在GetAdditionalResourcesFromAssemblies任务方面正在进行很多工作.但是，直到周期9-10才可以进行这项工作.这项工作目前是请求请求的一部分:

It might be worth a comparison of an Android Studio project with that many external dependencies and compare the time. I do know that we currently have quite a bit of on-going work with regards to the GetAdditionalResourcesFromAssemblies Task. However this work won't be available until Cycle 9-10. This work is currently apart of a pull request:

https://github.com/xamarin/xamarin-android/pull/296

(由于提交时间，您可以说它几乎是全新的).

(You can tell it's almost brand new due to the commit time).

从本任务可以看出，将进行以下改进:

As you can tell from this Task, there will be the following improvements:

当前任务总是从Google下载数据.不管 文件是否已经存在于Android sdk目录中. 此提交更改了GetAdditionalResourcesFromAssemblies任务 在android sdk的"extras"文件夹中查找所需的 .aar文件.这意味着如果用户拥有最新的sdk， 几乎不需要从Internet下载文件.

The current Task always downloads data from google. This is regardless of whether the files exist in the Android sdk directory already. This commit changes the GetAdditionalResourcesFromAssemblies task to look in the "extras" folder in the android sdk for the required .aar file. This will mean if a user has an up to date sdk, there will be almost no need to download the files from the internet.

还有一个PR- https://github.com/xamarin/xamarin- android/pull/292 (感谢@Mikhail)

There's also a PR - https://github.com/xamarin/xamarin-android/pull/292 (Thanks @Mikhail)

哪些地址可以重用计算得出的哈希值，这也可以缩短构建时间.

Which addresses reusing the computed hash which can also lower build times.

TLDR; GetAdditionalResourcesFromAssemblies需要更多的工作才能缩短构建时间.目前正在制作中.

TLDR; GetAdditionalResourcesFromAssemblies needs a bit more work for build times to be shorter. This is currently in the works.

当前在支持库中得到解决，该支持库包括对https://www.nuget.org/packages/Xamarin.Build.Download/

This is currently resolved in support libraries that include a dependency to https://www.nuget.org/packages/Xamarin.Build.Download/

这篇关于应用构建缓慢-Xamarin for Visual Studio的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！