Creating a simple Xamarin.Forms app When you create a cross-platform app with Xamarin.Forms in Visual Studio 2019, you may use a project template that is called Mobile App (Xamarin. Xamarin.UITest, along with NUnit, allow you to write these tests in C#. Click File-> select New-> Project (or press Ctrl+Shift+N). Hello, I'm a newbie, it seems xamarin has a lot of problems with the android emulator.