Android ViewPager refresh only one fragment -

i have viewpager set of fragments, wich different, , takes time load, , need refresh 1 of (say 2nd one) when move it. i've set setoffscreenpagelimit number of fragments have

i tried using method:

mviewpager.setonpagechangelistener(new onpagechangelistener() {     @override     public void onpageselected(int position) {         if(position == 1) {             pageradapter.notifydatasetchanged();         }     }     ... }); 

then refresh:

@override public int getitemposition(object object) {     if (object instanceof myfragment ) {         myfragment f = (myfragment ) object;         if (f != null) {             f.refreshstuff();         }     }      return super.getitemposition(object); } 

but approach seems when select second 1 , pageradapter.notifydatasetchanged(); gets called, gets kinda laggy.

is there better solution ?

thank all

so after while tried following solution wich worked quiet well

first defined interface follows:

public static interface fragmentstate{     void fragmentvisible(); } 

this interface implemented in many fragments, , me define want when 1 becaumes visible

public class myfragment extends fragment implements fragmentstate {     ...      @override     public void fragmentvisible() {          //do specific stuff          resetdataorwhatever();     }  } 

then in viewpager defined pagechangelistener follows, example of 2nd fragment stuff

mviewpager.setonpagechangelistener(new onpagechangelistener() {     @override     public void onpageselected(int position) {         if(position == 1) {             myfragment fragment = mviewpager.getadapter().getitem(1);             // call fragmentvisible method here             fragment.fragmentvisible();         }     }     ... }); 

hopefully people, also, if there better solution please provide it