---

Android tutorial

https://www.youtube.com/watch?v=6Jx7ZNZL9dk



http://www.youtube.com/playlist?list=PLCuRg51-gw5VqYchUekCqxUS9hEZkDf6l


IOS tutorial



https://www.youtube.com/watch?v=6Jx7ZNZL9dk

Form tutorial

https://www.youtube.com/watch?v=IqOrmYMGhQM


http://grialkit.com



https://www.youtube.com/watch?v=IziFVWUxFww

Download xamarin

Or visual studio 2017 + xamarin

Xamarin studio is available for Mac and Windows users

Visual studio is available for Mac and Windows

Buy the UI KIT.........

MVC
Models: the main logic (get,set)
Views : the layouts in xaml or XML
Controller: load the View's and initialize the methods


Course guide

Udemy
Lynda
Tutorial points
Csharpcorner
Microsoft MVA

xamarin Android
https://developer.xamarin.com/guides/android/getting_started/hello,android/



xamarin IOS

https://developer.xamarin.com/guides/ios/
xamarin windows form

https://developer.xamarin.com/guides/xamarin-forms/

You must know basic c#
Good with xaml UI




XAMLis an XML-based markup language developed by Microsoft. XAML is the language behind the visual presentation of an application that you develop in Microsoft Expression Blend, just as HTML is the language behind the visual presentation of a Web page.


Xaml is used for creating layout.I mean the UI.



Use the designer by dragging and dropping

Or
If u are a guru write the XaML manually

IOS UI

We have the storyboard for designing the UI usually in XML format.


In iOS we have the Info.plist is where application properties such as the application name, icons, launch images, and more in XML .


If can drag an drop the controls (text,input.....) in the storyboard . Mix material colors

Or u can just code the XML manually

After designing the views


put your methods in the controller



U can use sql as database by making query
The database class handler in Android need to be implemented.

Note that Android has shared preference

Webservices
U can use php as backend (to avoid writing to many codes) This is called webservices .
U can use c# Asp.net and newtonsoft to decode json.PHP or ASP.NET code is hosted and a request is sent using HTTP connection. The database arranged using json data-binding .

Something like
In php
Login.php
Register.php
List.php
Categories.php
Logout.php
Post.php

In C#
Login.cs

Index.asp(.html)
Register.cs

List.cs
Categories.cs
Post.cs


Parsing data



You can also send an HTTP request to a raw or live json feeds using newtonsoft and bind the data. Using
http://json2csharp.com to get the models.
Pls u a good microservices to host your json . Some libraries are available to parse data.

FAQ (do normal c# code work/reference)

It will work by adding the reference and importing normal c# libraries and APIs and implementing the methods and models.

Following

A very crucial thing you need to learn is xamarin binding for Andriod library's ( Java) and IOS librarys (swift or objective-C).


You can use Android APIs or iOS APIs in C# using xamarin binding iOS and Android libraries


IOS and Java make use of (import)


https://developer.xamarin.com/guides/android/advanced_topics/binding-a-java-library/



https://developer.xamarin.com/guides/ios/advanced_topics/binding_objective-c/






While xamarin make use of (Using)


Or material design for xamarin or iOS to guide developers by consuming the APIS.
Design Android Support Library adds support for various material, such as navigation drawers, floating action buttons (FAB), snackbars, and tabs.