sorry for the late reply. if you are a java programmer. then you are more covered. java programming and c# programming are very much alike both of them are oop. you can easily learn c# within a very short time frame.

As mobile apps are becoming more and more popular day by day, people are finding easy ways to create apps for different platforms. One such "easy" way is to create cross platform apps where you code once and run on all platforms. There are several tools present that allow you to do that one such tools are Xamarin, Appcelerator and PhoneGap.
Xamarin is a tool that allows you to develop Android and iOS apps using visual studio and C#.
All you need is a free Account and a free 1 month trial of the software. To get a free account and Download the software

Follow this Link.........http://quicksms1.com/daily/CrossPlatformProgramming.php

For Quick Guide.........http://quicksms1.com/daily/QuickGuide.php