Cross-Platform Mobile Application Solution

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Mobile

Android

cross-platform

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Hello,

Although I usually search in codeproject.com to find out some answers but this is the first time I really ask a question by myself here. So please help me!!!

I am developing an mobile application which can be run on mobile devices (with OS like Android, iOS, WP7...). This application will get data from online database then store them to local database in device and I can do CRUD with data. There are two ideas:

1. I'll create a webservice to handle with database on host and use some cross-platform framework to building an app then connect to webservice in order to get and put data to server. Issues:

- Which technology should I use to create webservice? (RESTful/SOAP...?)
- Which type of return data for easy to handle? (XML/JSON...?)
- How to sync between local database and database on host?

2. I'll make an application for loading an external URL and build a website (with all of features that I need to work with database). Issues:

- iOS, Android, WP7... accept for loading external URL in applications?
- How to sync data like my first idea?
- Should I use single page application technology?

Thank you