Export data in SQLIte database from Android App to remote SQL Server

I'm trying to post data stored in SQLite database on Android app to a remotely hosted SQL Server database.

Also what would be the best way to export data from SQL Server to SQLite database in Android App.

The application under development will post data by connecting to SQL database server through WIFI or over the internet.(This is another area where I would need advise on).

I have come across multiple tutorials like creating a wcf service and consuming it the application, creating php application to send data in JSON format etc.

I'm new to android app development so need advise from professional android developers to suggest the best way for data exchange between android app and SQL server.