What is Xamarin.Forms?

What is Xamarin.Forms? 


 Xamarin.Forms is a cross-platform UI toolkit that allows developers to easily create native user interface layouts that can be shared across Android, iOS, and Windows Phone.
Xamarin.Forms are split into main four areas:

Pages:
A page occupies the full screen in most cases. A page acts the same as Page on a Windows Phone and UIViewController on iOS. It is important to note that on Android they are more like a Resource.Layout and are certainly not an Activity.
Layouts:
A layout is a container that can hold other layouts or views.

Views:
A view is the likes of a Button, ActivityIndicator, or Label.

Cells:
A cell can be considered as a specialized view that describes how each item within a TableView or ListView is drawn.

Requirements

To use Xamarin.Forms, your app must be targeting the following platforms:
Xamarin.Forms applications can be written for the following operating systems:
  • Android 4.0.3 (API 15) or higher #
  • iOS 6.1 or higher
  • Windows Phone 8 Silverlight (using Visual Studio)
  • Windows Phone 8.1 (WinRT, using Visual Studio) #
  • Windows 8.1 Tablet/Desktop Apps (WinRT, using Visual Studio) #
  • Windows 10 Universal Apps PREVIEW (Phone/Tablet/Desktop, using Visual Studio) #

For more information, please, search in Xamarin.Forms guides
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 Documents: 
https://developer.xamarin.com/guides/cross-platform/xamarin-forms/getting-started/installation/
https://developer.xamarin.com/guides/cross-platform/xamarin-forms/ 

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