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Created attachment 16314 [details]
builds before and after forms packet upgrade
Updating a FOMRS project from forms v184.108.40.20629 to v220.127.116.11 causes all ANDROID builds to fail.
I have attach a file with the error give.
Further I have attached the build with forms v 18.104.22.16829 - showing the working build,
and a build after the packet update to form 22.214.171.124 - that fails.
I have also attached the packet.config file (in both version) so you can see what might cause the '--no-version-vectors' to be added to the AAPT tools - and thus thereby the error.
The `--no-version-vectors` value is present because something is setting the `$(AndroidResgenExtraArgs)` MSBuild property, which contains a list of additional parameters that are appended to the `aapt` command line.
What I don't know is what would be setting `$(AndroidResgenExtraArgs)`. Nothing within the Xamarin.Android build process sets that property; we only consume it.
This is where a repro would be handy. :-)
A quick (wrong?) search of all Xamarin github repo's *suggests* that `Xamarin.Android.Support.Vector.Drawable.targets` may be setting that property. Does your project by any chance include that file?
Indeed, the NuGet package contains that .targets file and also overrides $(AndroidResgenExtraArgs): https://www.nuget.org/packages/Xamarin.Android.Support.Vector.Drawable/23.3.0
*Why* it does that, I don't know.
I would suggest, however, that perhaps you should update your Android SDK Build-tools version? `aapt` from Build-tools 23.0.0 supports `aapt --no-version-vectors`.
`--no-version-vectors` is probably related to http://android-developers.blogspot.ca/2016/02/android-support-library-232.html
I am not sure I understand why this issue is marked as "resolved". I have a rather simple NUnit test project that contains only Xamarin Forms, Xamarin Forms Maps, and my business logic. Every since I updated to the latest version of Xamarin Forms (126.96.36.199) I am now getting this error. The only workaround that I have found is to manually edit the Xamarin.Android.Support.Vector.Drawable.targets file and remove the "Extra" option. The problem is, I need to do that EVERY TIME I do a clean all and restore of my packages and on top of that I can no longer use a build server as the package that is downloaded doesn't have this manual fix. So from what I can see this issue still exists and is a pretty significant blocker for those of us working with Android Development.