Android Tabs Content for better User Experience -

i have activity has 3 tabs fragments.

1. featured
2. up coming
3. favorites

right implement when click particular tab downloads content internet , displays it.

when browsing through google play app. found when went app section content across tabs featured - top free - top paid etc there , images lazy loading.

i trying figure out how can implemented.

in app have activity wich has 4 tabs wich fragments..

i solved explained problem using singleton. load relevant information sqlite database , pass arraylist in singletion.. can access content every fragment...

public class singleton {     private static singleton instance = null;      public arraylist<myobject> myobjectlist;      protected singleton() {         // exists defeat instantiation.     }     public static singleton getinstance() {         if(instance == null) {             instance = new singleton();                     myobjectlist = new arraylist<myobject>();          }         return instance;     }  }