Porting an iOS Objective-c app to Android Java [closed]

Question

My app is a medical data viewer, where patients wear a sensor that transmits data by Bluetooth low energy. The app was developed in Objective C, targeting the iOS platform. Now the app needs to be ported to the Android platform.

The current design and implementation for iOS is as follows:

• communication - Objective C, specific to the Core Bluetooth API
• data/persistence - Objective C, using FMDatabase as the interface to SQLite
• algorithms/logic - Objective C
• ui - JavaScript/HTML5 based on Phonegap

Since the communication is specific to the Core Bluetooth API, it will have to be re-written for Android. The ui layer should be readily portable without much change as it fully depndendt on Phonegap. Yet for the persistence and logic layers I am looking for a way to either convert them automatically to Android, or re-write them in such a way that they are reusable for both platforms.

What is the best software engineering approach to implement a cross-platform app like this?

Answer 1

Seems like there is: http://code.google.com/p/objc2j/

The repository should be accesible via http://objc2j.googlecode.com/svn/

Didn't check it myself, so please post your opinion on this.

Answer 2

Google has some open source projects that do this.

You will need to use SVN to access these repositories. Here are the links:

Java to Objective C: http://code.google.com/p/j2objc/

Objective C to Java : http://code.google.com/p/objc2j/

Good luck!