question: @ Override public List < String > loadInBackground ( ) { ArrayList < String > entries = new ArrayList < > ( ) ; if ( mHasNext && ! mIsLoading ) { mIsLoading = true ; try { Thread . sleep ( 2000 ) ; } catch ( InterruptedException e ) { e . printStackTrace ( ) ; } if ( offset < perPage * 10 ) { for ( int i = offset ; i < offset + perPage ; i ++ ) entries . add ( "A fancy list item #" + ( i + 1 ) ) ; } if ( entries . isEmpty ( ) ) { mHasNext = false ; } else { mHasNext = entries . size ( ) >= perPage ; offset += perPage ; } } return entries ; }
target:  This is where the bulk of our work is done.  This function is called in a background thread and should generate a new set of data to be published by the loader.