How to make a dynamic android application

anky

Youngling
hello friends,
i want to make an app which updates the content itself, i have only made static apps until now and i don't have not much idea how to make such types of app.
I want to make an app like news reader like which updates the content like score of a cricket tournament or job alerts or something like that.
i think it has something to do with json(which i don't what it is) or RSS parser..am i right?
pls suggest me how to do that.Do i have to make a website and connect it on my app and only update the website(thus making the app always up to date). is it the right way to do it?
thanks in advance
 
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