Download Android Sdk For Xamarin Studio

I am moving towards Xamarin for cross-platform application development. I already had VS2015 installed, I downloaded Xamarin tools(vstoolsforxamarin.exe) from their website and when I install them after a long wait VS says "setup completed with errors"and it does not download and install Android SDK for API 19,20,23, It always say:"Please check your internet connection and try again" and i am sure that my internet connection doesn't get disturbed during all this process. I have tried this 3 times now, tried by uninstalling VS2015, installing it again but got the same error. What is the problem that is causing this? I already have Android Studio installed, with its SDK manager. Any help would be appreciated, that to get Xamarin running in VS2015.

Download Android Sdk For Xamarin Studio