Xamarin Studio 2 - last stable update - Aapt task execution error: Initial sequence is empty

Question

I am using a trial version of Xamarin Studio for my latest project consisting of an Android application. It started smoothly at first. But today, after upgrading to the latest stable version, I ran into an error (as indicated in the header of this post).

The build log is as follows:

Build Solution: MyActivity.Mobile (Debug)

Building: MCAAndroid (debugging)

The assembly began on 05/18/2013 17:04:44.

Project "/Users/hazimanabhmy/Projects/MyActivity.Mobile/MCAAndroid/MCAAndroid.csproj" (Create goal (s)):

Target objects _CheckProjectItems: Task CheckProjectItems NativeLibraries: JavaLibraries: JavaSourceFiles:

Target _ComputeAndroidAssetsPaths: ResourceFiles: Assets /WebUI/newsfeed.html Assets / WebUI / images / bg_content.png Assets /WebUI/CSS/style.css Assets / WebUI / images / flag.png IntermediateFiles:

Target _GenerateAndroidAssetsDir: skipping the target is "_GenerateAndroidAssetsDir" because its outputs are relevant.

Target _ComputeAndroidResourcePaths: ResourceFiles: Resources / values ​​/ strings.xml Resources / draw / Icon.png Resources / layout / Login.axml Resources / draw / le_cool_logo.png Resources / draw / bg.jpg Resources / draw / icon_password.png /Icon_user.png Resources / layout / Home.axml Resources / draw / info.png Resources / draw / settings.png Resources / draw / help.png Resources / draw / bg_content.png Resources / draw / shadow_black.9.png Resources / draw / cog.png Resources / draw / tools.png Resources / layout / ReadMatric.axml Resources / draw / matric.jpg Resources / draw / mcalogo.png IntermediateFiles:

Target _GenerateAndroidResourceDir: Skipping the target "_GenerateAndroidResourceDir" because its outputs are updated.

Target _ResolveMonoAndroidSdks: MonoAndroid Tools: /Library/Frameworks/Xamarin.Android.framework/Versions/Current/lib/mandroid/ MonoAndroid Framework: /Library/Frameworks/Xamarin.Android.framework/Versions/Current/libmand .10; /Library/Frameworks/Xamarin.Android.framework/Versions/Current/lib/mono/2.1 MonoAndroid Binaries: /Library/Frameworks/Xamarin.Android.framework/Versions/Current/bin/ Android NDK: Android SDK: / Users / hazimanabhmy / Library / Developer / Xamarin / android-sdk-mac_x86 / Java SDK: / usr /

Target _ValidateAndroidPackageProperties: GetAndroidPackageName ManifestFile Task: /Users/hazimanabhmy/Projects/MyActivity.Mobile/MCAAndroid/Properties/AndroidManifest.xml AssemblyName: MCAAndroid Package Name: MCAAndroid

Target _BuildDependencies: Solved libraries:

Target _ExtractLibraryProjectImports: assemblies: /Library/Frameworks/Xamarin.Android.framework/Versions/Current/lib/mono/2.1/System.dll /Library/Frameworks/Xamarin.Android.framework/Versions/Current/lib/mono/2.1/ System.Xml.dll /Library/Frameworks/Xamarin.Android.framework/Versions/Current/lib/mandroid/platforms/android-10/Mono.Android.dll /Library/Frameworks/Xamarin.Android.framework/Versions/Current/ lib / mono / 2.1 / System.Core.dll Jars: ResolvedResourceDirectories:

Target _GetLibraryImports: NativeLibraries: Jars:

Target _CheckDuplicateJavaLibraries: JavaSourceFiles: JavaLibraries:

Target _UpdateAndroidResgen: Additional ResourcesResourceDirectories: /Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets: Error: Aapt task execution error: Initial sequence is empty Task Completed "Aapt" - FAULT Completed goal building "_UpdateAndroidResgen" in the project "/Users/hazimanabhmy/Projects/MyActivity.Mobile/MCAAndroid/MCAAndroid.csproj" .-- FAILED

Ready project "/Users/hazimanabhmy/Projects/MyActivity.Mobile/MCAAndroid/MCAAndroid.csproj" .-- FAILED

Assembly FAILED. Errors:

/Users/hazimanabhmy/Projects/MyActivity.Mobile/MCAAndroid/MCAAndroid.csproj(Build) → /Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets(_Rpate

/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets: Error: Aapt task execution error: The original sequence is empty

0 Warning 1 Error Time elapsed from 00:00 to 00: 1048310

---------------------- Done ----------------------

Build: 1 error, 0 warnings

I could not find the reason. Anyone help me?

I asked the same question on the Xamarin.Android forum and am still waiting for an answer. But I think that I could gather more resources and knowledge from experts here.

Answer 1

This is a recent change / bug in Xamarin.Android that will be used with Android rev tools. 22 or later, where appt was moved to the sdk directory (from tools to build tools). You need to go into the sdk android manager and update the SDK tools to version 22 (or better), and also install a new build toolkit.