Java android Fragment tabs (changed fragment only when swipe) don't work click on tabs name -

i have activity in have 2 fragments , when swipe on tabs fragments change , when click on tabs name apk doesn't change view. stay on same fragments.

this activity :

public class objectlistactivity extends  appcompatactivity {      private toolbar toolbar;     private tablayout tablayout;     private viewpager viewpager;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_object_list2);          toolbar = (toolbar) findviewbyid(r.id.toolbar);         setsupportactionbar(toolbar);          hidesoftkeyboard();          android.support.v7.app.actionbar actionbar = getsupportactionbar();         actionbar.setnavigationmode(android.app.actionbar.navigation_mode_standard);         actionbar.settitle("");         getsupportactionbar().setdisplayhomeasupenabled(false);          viewpager = (viewpager) findviewbyid(r.id.viewpager);         setupviewpager(viewpager);          tablayout = (tablayout) findviewbyid(r.id.tabs);         tablayout.setupwithviewpager(viewpager);     }      public void hidesoftkeyboard() {         if(getcurrentfocus()!=null) {             inputmethodmanager inputmethodmanager = (inputmethodmanager) getsystemservice(input_method_service);             inputmethodmanager.hidesoftinputfromwindow(getcurrentfocus().getwindowtoken(), 0);         }     }      private void setupviewpager(viewpager viewpager) {         viewpageradapter adapter = new viewpageradapter(getsupportfragmentmanager());         adapter.addfragment(new fragmentallobjectactivity(), getstring(r.string.all));         adapter.addfragment(new fragmentgroupobjectsactivity(), getstring(r.string.group));         viewpager.setadapter(adapter);     }      class viewpageradapter extends fragmentpageradapter {         private final list<fragment> mfragmentlist = new arraylist<>();         private final list<string> mfragmenttitlelist = new arraylist<>();          public viewpageradapter(fragmentmanager manager) {             super(manager);         }          @override         public fragment getitem(int position) {             return mfragmentlist.get(position);         }          @override         public int getcount() {             return mfragmentlist.size();         }          public void addfragment(fragment fragment, string title) {             mfragmentlist.add(fragment);             mfragmenttitlelist.add(title);         }          @override         public charsequence getpagetitle(int position) {             return mfragmenttitlelist.get(position);         }     } } 

and xml layout :

<android.support.design.widget.coordinatorlayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     android:layout_width="match_parent"     android:background="@drawable/logowanie_tlo"     android:layout_height="match_parent">      <!--<android.support.design.widget.appbarlayout-->     <!--android:layout_width="match_parent"-->     <!--android:layout_height="wrap_content"-->     <!--android:theme="@style/themeoverlay.appcompat.dark.actionbar">-->      <android.support.v7.widget.toolbar         android:id="@+id/toolbar"         android:layout_width="match_parent"         android:layout_height="?attr/actionbarsize"         app:layout_scrollflags="scroll|enteralways"         />      <android.support.design.widget.tablayout         android:id="@+id/tabs"         android:layout_width="match_parent"         android:layout_height="wrap_content"         app:tabmode="fixed"         app:tabgravity="fill"/>     <!--</android.support.design.widget.appbarlayout>-->      <android.support.v4.view.viewpager         android:id="@+id/viewpager"         android:layout_width="match_parent"         android:layout_height="match_parent"         app:layout_behavior="@string/appbar_scrolling_view_behavior"  /> </android.support.design.widget.coordinatorlayout>