Web Application to Android Application

I have my own email server. I am trying to create an application for Android Phone. As Gmail as a web interface and also Android Gmail apps, where we login and check our email. I too want to build an application for my own email server like GMAILS. My Requirements are: My Android application will have two modes. Firstly SMS Mode and WebView mode. If no wifi or data connection avilable then i would switch to sms mode and i have done it successfully retrieving email list and other functions. But i too want to use the same above android application for web interface when there is wifi or data connecti开发者_JS百科on.

Is my objective achievable. As i am googling around for this.

i solved it. Though this had nothing to do with i thought. Sorry for troubling you all.