Reflexion on language to develop cross mobile app (android, iphone, wp7, other)

I'am a c# developper and I seek the best language to choose to be able to reuse some code in a perspective of port some future apps into mobile devices for free (open source perspective). Should I use Java (and so learn it), or can uses C#.

Monodroid and monotouch are not free and monotouch requires a mac hardware (I only have norml pc with Linux and Windows and may run mono on both)!

So it will be difficult to use c# for android or iPhone, am i wron开发者_如何学Cg ?

Well, we (Resco) bet on C# and .Net/Mono. This covers nearly all platforms. (We currently have products on WP7/Android/iOS/WM.)

But taking into account recent developments Mono seems to have very uncertain future. Nobody will tell you right now what's going to happen.