java - Save ArrayList Between activity transtion -


im having lot of trouble here.

problem: have 2 activities , b. in activity have listview custom items. have data of these items storage in arraylist. when user clicks on listview item, activity b called displaying details item. when user comes activity a, items inside listiview gone. know need save listview state, need save data of arraylist.

question: how solve problem?

notes: have tryed onsaveinstancestate , onrestoreinstancestate, since transition between these 2 activities , b fast, activity not destroyed. cannot save arraylist in bundle object. have tryed use sharedprefereces , contentvalues nor of these classes have support parcelable objects , lists.

thanks help! 

    @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     lstview = (listview) findviewbyid(r.id.lstview);      connectivitymanager cm = (connectivitymanager) getsystemservice(context.connectivity_service);     networkinfo ni = cm.getnetworkinfo(connectivitymanager.type_wifi);     if (ni != null && ni.isconnected())         updatelistview();     registerclickcallback(); }  @override protected void onrestoreinstancestate(bundle savedinstancestate) {     super.onrestoreinstancestate(savedinstancestate);     listresorces = savedinstancestate.getparcelablearraylist(list_resources);     arrayadapter<record> adapter = new bandejaoitemadapter(listresorces);     lstview.setadapter(adapter); }  @override protected void onsaveinstancestate(bundle outstate) {     super.onsaveinstancestate(outstate);     outstate.putparcelablearraylist(list_resources, listresorces); }


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