DeleteBinObj issue with Resources

[jonathanpeppers]

Steps to Reproduce

1. Somehow when testing/building Xamarin.Forms.ControlGallery.Android
2. I randomly get an APT0000 error
3. Rebuild fixes it

I am not exactly sure what step I did to cause this, the error I get is:

"C:\Users\myuser\Desktop\Git\Xamarin.Forms\Xamarin.Forms.ControlGallery.Android\Xamarin.Forms.ControlGallery.Android.csproj" (default target) (1) ->
(_UpdateAndroidResgen target) ->
  Resources\layout\NativeAndroidCell.axml(3): error APT0000: No resource found that matches the given name (at 'background' with value '@drawable/CustomSelector'). [C:\Users\myuser\Desktop\Git\Xamarin.Forms\Xamarin.Forms.ControlGallery.Android\Xamarin
.Forms.ControlGallery.Android.csproj]
  Resources\layout\NativeAndroidListViewCell.axml(3): error APT0000: No resource found that matches the given name (at 'background' with value '@drawable/CustomSelector2'). [C:\Users\myuser\Desktop\Git\Xamarin.Forms\Xamarin.Forms.ControlGallery.Androi
d\Xamarin.Forms.ControlGallery.Android.csproj]

    7 Warning(s)
    2 Error(s)

It could be related to opening the solution in VS for Windows?

In obj\Debug\res I see both customselector.xml and customselector2.xml.

Expected Behavior

I should not have to Rebuild here, this seems to be a DeleteBinObj issue.

Actual Behavior

I have to Rebuild for the project to build.

Version Information

I was using xamarin-android/master as of: 3558fd2

Log File

I zipped up the project, obj, bin, and msbuild.binlog: https://www.dropbox.com/s/6l5ak1mlqybw9k5/Xamarin.Forms.ControlGallery.Android.zip?dl=0

NOTE: Github had a 10MB limit

VS bug #652878

[jonathanpeppers]

@dellis1972 I noticed the branch I'm working on doesn't have #1914

Could that be the cause?

[dellis1972]

Its probable. Best thing to do is to check the various .cache files in the intermediate dir. If they are missing the Resource paths for the lp directories then #1914 may well be the fix.

[jonathanpeppers]

libraryprojectimports.cache looks fine...

One thing that is weird is I have an obj\Debug folder with stuff in it and obj\Debug\MonoAndroid81. When I'm getting the error, it's using the MonoAndroid81 directory, which should not have been bothered by the IDE at all--it was on 15.7.4.