How to create a social network app on Android
<p>I want to build a social network app for Android. 
But, I don't know where to start. I tried to search in <a href="http://developer.android.com" rel="nofollow">http://developer.android.com</a> and many other tutorials. But, I didn't understand in data storage.
In web development (PHP) for example, we need server and database (MySQL).
How about the android app?
I need to know the concept in developing social network app for Android,
such as to store users' posts, comments, uploaded photos, google map data and so on.
I don't want the code, I'm asking for idea and concept in developing social network app for Android.</p>

<p>Any links to the suitable sites for me to start would be appreciated.
Thanks.</p>
