So Xamarin is freely available with Visual Studio 2015 Update 2. I wanted to tryout building a cross-platform application that consumes SharePoint Online data. Earlier I provided the CSOM code sample which allows you to interact with SharePoint On-Premise and Online within a universal application. But this time I am going to try out and Android.
As the tryout is still in progress, I will update sooner the implementation is done.
Before that, you need to have Visual Studio 2015 with Update 2 that has inbuilt support for Cross-Platform development upon selection during the installation. (This is the easiest way, of course you can install Xamarin separate and use Xamarin studio as well.)
The setup will take around 33GB across all the drivers during the installation.
Stay tuned... This is going to be awesome.