ActivityNotFoundException when attempting to use a new Activity and other issues with outdated AndroidManifest.xml in projects configured to use Enhanced Fast Deployment #2608
Description
Steps to Reproduce
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Create a new Android application project.
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Add the following lines to the .csproj file to enable Enhanced Fast Deployment:
<PropertyGroup> <AndroidFastDeploymentType>Assemblies:Dexes</AndroidFastDeploymentType> </PropertyGroup>
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Add an additional
Activitysubclass to the project, similar to:public class SecondActivity : Activity { protected override void OnCreate (Bundle savedInstanceState) { base.OnCreate (savedInstanceState); SetContentView (Resource.Layout.activity_main); } }
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Choose Debug > Start Debugging to build, deploy, and start debugging the app.
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Choose Debug > Stop Debugging.
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Add an
[Activity]attribute toSecondActivityto make the build process generate an entry for it in AndroidManifest.xml. -
Add a line to start the new activity from the
MainActivity.OnCreate()override via anIntent:StartActivity (typeof (SecondActivity));
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Choose Debug > Start Debugging.
Actual Behavior
UNHANDLED EXCEPTION:
Android.Content.ActivityNotFoundException: Unable to find explicit activity class {AndroidApp1.AndroidApp1/md559d7fc296fc238aa7bec92ba27f2cb33.SecondActivity}; have you declared this activity in your AndroidManifest.xml?
The new activity cannot be started because the AndroidManifest.xml file has not been updated on-device. Indeed the timestamps on the .apk files in the bin\ directory show the time of the initial build from step 4 rather than the new build from step 8.
It looks like the issue might be that the _BuildApkFastDev target doesn't have $(IntermediateOutputPath)android\AndroidManifest.xml as an input, so the target is skipped:
2>Target "_BuildApkFastDev" in file "C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\MSBuild\Xamarin\Android\Xamarin.Android.Common.Debugging.targets" from project "c:\Temp\AndroidApp1\AndroidApp1\AndroidApp1.csproj" (target "_CopyPackage" depends on it):
2>Skipping target "_BuildApkFastDev" because all output files are up-to-date with respect to the input files.
2>Input files: C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\Java.Interop.dll;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v8.1\Mono.Android.dll;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Core.dll;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.dll;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Xml.dll;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\mscorlib.dll;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Net.Http.dll;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.Runtime.Serialization.dll;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\System.ServiceModel.Internals.dll;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\ReferenceAssemblies\Microsoft\Framework\MonoAndroid\v1.0\Mono.Security.dll;c:\Temp\AndroidApp1\AndroidApp1\obj\AndroidApp1.csproj.nuget.g.props;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\MSBuild\Current\Bin\Microsoft.Xaml.targets;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\Common7\IDE\CommonExtensions\Microsoft\NuGet\NuGet.targets;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\MSBuild\Current\Microsoft.Common.targets\ImportAfter\Microsoft.NET.Build.Extensions.targets;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\MSBuild\Microsoft\Microsoft.NET.Build.Extensions\Microsoft.NET.Build.Extensions.targets;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\MSBuild\Microsoft\Microsoft.NET.Build.Extensions\Microsoft.NET.Build.Extensions.ConflictResolution.targets;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\MSBuild\Microsoft\Microsoft.NET.Build.Extensions\Microsoft.NET.DefaultPackageConflictOverrides.targets;C:\Program Files (x86)\Microsoft Visual Studio\2019\Preview\MSBuild\Microsoft\NuGet\16.0\Microsoft.NuGet.targets;c:\Temp\AndroidApp1\AndroidApp1\obj\AndroidApp1.csproj.nuget.g.targets;obj\Debug\81\build.props;obj\Debug\81\adb.props
2>Output files: obj\Debug\81\android\bin\AndroidApp1.AndroidApp1.apk
2>Done building target "_BuildApkFastDev" in project "AndroidApp1.csproj".Expected Behavior
If I disable Enhanced Fast Deployment and go back to classic Fast Deployment, the _BuildApkFastDev target does build in this scenario, and the new activity starts successfully.
Version Information
Microsoft Visual Studio Enterprise 2019 Int Preview
Version 16.0.0 Preview 2.0 [28509.60.d16.0]
VisualStudio.16.IntPreview/16.0.0-pre.2.0+28509.60.d16.0
Microsoft .NET Framework
Version 4.7.03056
Xamarin.Android SDK 9.1.103.6 (HEAD/1127dc3a)