Xamarin Unable to open class file

1
votes

Good day all.

I have installed the brand new Visual Studio 2017 with the latest Xamarin. I have problems opening existing projects but even creating a brand new Cross-Platform App(Xamarin.Forms PCL) I cant even run the app as is? The error is as follow

"Unable to open class file obj\Debug\android\src\android\support\graphics\drawable\animated\R.java: Permission denied".

But when going to the location above... I can only find up to the point obj\Debug\android\src inside the Android project? Any help will be appreciated.Thanks!

1
androidxamarinvisual-studio-2017
Running VS as admin? Also do you have the file open elsewhere or is shared or in shared folder? - Milen
1.) Try starting VS as administrator, 2.) try re-building (clean + build OR just rebuild) your solution - Radinator
Ok I am not 100% certain what I have done but after hours of "playing" around I by accident deleted my SDK Tools(V25.2.5) and then after many many hours of trying to re-install SDK Tools(v25.2.3) it works again! Thanks so much for your posts! - Johann Deysel

1 Answers

0
votes
  • Right Click your Android project which is under the Solution Explorer
  • Select Properties menu item
  • Select Android Options tab
  • Uncheck "Use Fast Deployment(debug mode only)"