i develope an app for android ad i have to create the same app for symbian and Window phone. Is there a way to convert the code due to rewrite from start the same app? Thanks!
AFAIK there is no tool to convert existing app. If you are starting from scratch you can use PhoneGap
EDIT:
PhoneGap is an HTML5 app platform that allows you to author native applications with web technologies that can run on multiple platforms(symban, iOs,android, windows)