android - ListView not displaying anything in new activity using array adapter -

i've got class should, theoretically, display rss headlines, single rss feed site, in listview called searchlistview. if listview empty textview appears informing user listview empty, happens every time navigate activity. button , edittext filtering headlines.

i've got exact same class in project (this class main activity in said project) works fine.

rssitem class parses rss feed information headline title , url headline.

note: searchactivity not main activity.

edit: i'm using callback , loadermanager in main activity display items in list view well. i'm not knowledgeable these , don't know if might causing issue due main activity. not pass information main activity, though.

fixed: wasn't getting errors or but, reason, nothing displayed. went android manifest , realised app doesn't have permissions connect internet. silly mistake, easy miss.

<uses-permission android:name="android.permission.internet"/> 

searchactivity.java

public class searchactivity extends appcompatactivity implements loadermanager.loadercallbacks<list<rssitem>> {     private edittext medittext;      private button mbutton;      private arrayadapter<rssitem> madapter;     private listview mlistview ;     // hard wire rss feed source time being     private string mdatasource = "http://feeds.bbci.co.uk/news/uk/rss.xml";     // no search string @ moment     private string msearchstring = "";      private static final int loader_id = 1;     // callbacks through interact loadermanager.     private loadermanager.loadercallbacks<list<rssitem>> mcallbacks;     private loadermanager mloadermanager;     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_search);         toolbar toolbar = (toolbar) findviewbyid(r.id.toolbar);         setsupportactionbar(toolbar);          mbutton = (button) findviewbyid(r.id.button);         medittext = (edittext)findviewbyid(r.id.edittextsearch);         madapter = new arrayadapter<>(this, android.r.layout.simple_list_item_1);         mlistview = (listview)findviewbyid(r.id.searchlistview);         mlistview.setadapter(madapter);         textview emptytext = (textview)findviewbyid(r.id.textviewempty);         mlistview.setemptyview(emptytext);         // set list view item click listener         mlistview.setonitemclicklistener(new listlistener(this));          // activity (which implements loadercallbacks<cursor>         // interface) callbacks object through interact         // loadermanager. loadermanager uses object         // instantiate loader , notify client when data made         // available/unavailable.         mcallbacks = this;          // initialize loader id '1' , callbacks 'mcallbacks'.         // if loader doesn't exist, 1 created. otherwise,         // created loader reused. in either case,         // loadermanager manage loader across activity/fragment         // lifecycle, receive new loads once have completed,         // , report new data 'mcallbacks' object.         mloadermanager = getloadermanager();         mloadermanager.initloader(loader_id, null, mcallbacks);     }      // handler search button click     public void onclick(view v){         msearchstring = medittext.gettext().tostring();         mloadermanager.restartloader(loader_id, null, mcallbacks);     }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         getmenuinflater().inflate(r.menu.menu_main, menu);         return true;     }      @override     public loader<list<rssitem>> oncreateloader(int id, bundle args) {         rssloader loader = new rssloader(                 this, // context                 mdatasource, // url of rss feed                 msearchstring  // search loaded rssitem match in title         );         return loader;     }      @override     public void onloadfinished(loader<list<rssitem>> loader, list<rssitem> data) {         madapter.clear();         madapter.addall(data);     }      @override     public void onloaderreset(loader<list<rssitem>> loader) {         madapter.clear();     } } 

listlistener.java

public class listlistener implements onitemclicklistener {     // , reference calling activity     // calling activity reference     activity mparent;     /** set references in our constructor.*/     public listlistener(activity parent) {         mparent  = parent;     }      /** start browser url rss item.*/     public void onitemclick(adapterview<?> parent, view view, int pos, long id) {         // create intent going display data         intent = new intent(intent.action_view);         // have set data our new intent;         i.setdata(uri.parse(((rssitem)(parent.getitematposition(pos))).getlink()));         // , start activity our intent         mparent.startactivity(i);     } } 

i wasn't getting errors or but, reason, nothing displayed. went android manifest , realised app doesn't have permissions connect internet. silly mistake, easy miss.

<uses-permission android:name="android.permission.internet"/> missing.