Floating Action Button in Xamarin.Forms

Hi,
I had completed my App's home page in Xamarin.Forms Portable.

Now i want to add a Flotation Action Button In my Android Project !

Is there any way to add FAB for Android in my existing home page, which was coded in Xamarin.Forms Portable.

OR

I want to create a separate home page for Android and add call it as a MainPage for android ?

Thanks and Regards.