android - RecyclerView within fragment -

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the following recyclerview crashes when run in fragment class inside "else". following exeption:

01-05 18:19:14.922 18178-18178/? e/androidruntime: fatal exception: main                                                process: com.ymoshel.moshel.handcuffed, pid: 18178                                                java.lang.nullpointerexception: attempt invoke virtual method 'void android.support.v7.widget.recyclerview.setlayoutmanager(android.support.v7.widget.recyclerview$layoutmanager)' on null object reference                                                    @ com.designdemo.uaha.threefragments.oncreateview(threefragments.java:153)                                                    @ android.support.v4.app.fragment.performcreateview(fragment.java:1965)                                                    @ android.support.v4.app.fragmentmanagerimpl.movetostate(fragmentmanager.java:1078)                                                    @ android.support.v4.app.fragmentmanagerimpl.movetostate(fragmentmanager.java:1259)                                                    @ android.support.v4.app.backstackrecord.run(backstackrecord.java:738)                                                    @ android.support.v4.app.fragmentmanagerimpl.execpendingactions(fragmentmanager.java:1624)                                                    @ android.support.v4.app.fragmentmanagerimpl.executependingtransactions(fragmentmanager.java:570)                                                    @ android.support.v4.app.fragmentpageradapter.finishupdate(fragmentpageradapter.java:141)                                                    @ android.support.v4.view.viewpager.populate(viewpager.java:1106)                                                    @ android.support.v4.view.viewpager.populate(viewpager.java:952)                                                    @ android.support.v4.view.viewpager$3.run(viewpager.java:251)                                                    @ android.view.choreographer$callbackrecord.run(choreographer.java:858)                                                    @ android.view.choreographer.docallbacks(choreographer.java:670)                                                    @ android.view.choreographer.doframe(choreographer.java:603)                                                    @ android.view.choreographer$framedisplayeventreceiver.run(choreographer.java:844)                                                    @ android.os.handler.handlecallback(handler.java:739)                                                    @ android.os.handler.dispatchmessage(handler.java:95)                                                    @ android.os.looper.loop(looper.java:148)                                                    @ android.app.activitythread.main(activitythread.java:5466)                                                    @ java.lang.reflect.method.invoke(native method)                                                    @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:726)                                                    @ com.android.internal.os.zygoteinit.main(zygoteinit.java:616)   public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) {    string strtext = getarguments().getstring("edttext");     log.d(tag,"strtext: " + strtext);     recyclerview rv = (recyclerview) inflater.inflate(             r.layout.fragment_prod_list, container, false);     mactivity = getactivity();     thisfragtype = getarguments().getint(arg_frag_type, 0);     thisfragtypew = getarguments().getint(arg_frag_type, 1);        log.d(tag, "the frag type is: " + thisfragtype);     log.d(tag,"test text "+text);     if (thisfragtype==recent_arrest_frag||thisfragtype==search_by_name_frag) {         setuprecyclerview(rv);         return rv;     }else {  view view = inflater.inflate(r.layout.fragment_rssitem_detail,                 container, false);          arraylistcountynames = new arraylist<>();         test = getarguments().getstring("edttext", "default");         log.d(tag, "test: " + test);         textview textview = (textview) view.findviewbyid(r.id.emptyview);         textview.settext(test);           final string shared_size = getdefaults("shared_size", mactivity);         log.d(tag,"shared_size: "+shared_size);         string [] listcountys = new string[integer.parseint(shared_size)];         (int  = 0 ;i<integer.parseint(shared_size);i++){             final string defaults = getdefaults("shared" + i, mactivity);             listcountys[i]=defaults;             arraylistcountynames.add(defaults);             log.d(tag,"shared: "+defaults);         }         recyclerview recyclerview;         recyclerview = (recyclerview) view.findviewbyid(r.id.recyclerview);          startadapter(listcountys,listcountys,test );         // setup layout manager items         linearlayoutmanager layoutmanager = new linearlayoutmanager(mactivity);         // control orientation of items         // supports linearlayoutmanager.horizontal         layoutmanager.setorientation(linearlayoutmanager.vertical);          // attach layout manager recyclerview         recyclerview.setlayoutmanager(layoutmanager);         recyclerview.setvisibility(view.visible);          adapter = new mypickcountfavoritearrestadapter(mactivity,listcountys,listcountys,test);          return view;     }

this recyclerview when run on regular activity works fine, fragment class causing trouble suggestions?

i see other views such "textview" being found appropriately , not causing npe. check here if id "r.id.recyclerview" being found , returning appropriate value in fragment, possible recycler view trying find present in layout activity , may need create 1 in fragment (or have 1 in fragment, since displaying on activity). also, default orientation vertical not have set such in code.


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