Android: while i select an item from navigation drawer, it is not moving to the new screen -

when set size of viewerpage want output image

i set tabs in home footer menu. code follow:

home.java

package com.example.sachin.omcommunication;  import android.app.fragmentmanager; import android.content.intent; import android.os.bundle; import android.support.design.widget.navigationview; import android.support.design.widget.tablayout; import android.support.v4.app.fragment; import android.support.v4.app.fragmentpageradapter; import android.support.v4.app.fragmenttransaction; import android.support.v4.view.gravitycompat; import android.support.v4.view.viewpager; import android.support.v4.widget.drawerlayout; import android.support.v7.app.actionbardrawertoggle; import android.support.v7.app.appcompatactivity; import android.support.v7.widget.toolbar; import android.view.menu; import android.view.menuitem;  import java.util.arraylist; import java.util.list;  public class home extends appcompatactivity         implements navigationview.onnavigationitemselectedlistener  {      private toolbar toolbar;     private tablayout tablayout;     private viewpager viewpager;     fragment newfragment;     fragmentmanager mfragmentmanager;     fragmenttransaction mfragmenttransaction;      private int[] tabicons = {             r.mipmap.ic_launcher,             r.mipmap.ic_launcher,             r.mipmap.ic_launcher,             r.mipmap.ic_launcher      };     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_home);          toolbar = (toolbar) findviewbyid(r.id.toolbar);         setsupportactionbar(toolbar);         getsupportactionbar().setdisplayhomeasupenabled(true);          viewpager = (viewpager) findviewbyid(r.id.viewpager);         setupviewpager(viewpager);          tablayout = (tablayout) findviewbyid(r.id.tabs);         tablayout.setupwithviewpager(viewpager);         setuptabicons();          fragmenttransaction fragmenttransaction = getsupportfragmentmanager().begintransaction();         fragmenttransaction.replace(r.id.framelayout, new homepage());         fragmenttransaction.commit();          drawerlayout drawer = (drawerlayout) findviewbyid(r.id.drawer_layout);         actionbardrawertoggle toggle = new actionbardrawertoggle(                 this, drawer, toolbar, r.string.navigation_drawer_open, r.string.navigation_drawer_close);         drawer.setdrawerlistener(toggle);         toggle.syncstate();          navigationview navigationview = (navigationview) findviewbyid(r.id.nav_view);         navigationview.setnavigationitemselectedlistener(this);     }     private void setuptabicons() {         tablayout.gettabat(0).seticon(tabicons[0]);         tablayout.gettabat(1).seticon(tabicons[1]);         tablayout.gettabat(2).seticon(tabicons[2]);         tablayout.gettabat(3).seticon(tabicons[3]);     }      private void setupviewpager(viewpager viewpager) {         viewpageradapter adapter = new viewpageradapter(getsupportfragmentmanager());         adapter.addfragment(new homepage(), "one");         adapter.addfragment(new twofragment(), "two");         adapter.addfragment(new threefragment(), "three");         adapter.addfragment(new fourfragment(), "four");          viewpager.setadapter(adapter);     }      class viewpageradapter extends fragmentpageradapter {         private final list<android.support.v4.app.fragment> mfragmentlist = new arraylist<>();         private final list<string> mfragmenttitlelist = new arraylist<>();          public viewpageradapter(android.support.v4.app.fragmentmanager manager) {             super(manager);         }          @override         public android.support.v4.app.fragment getitem(int position) {             return mfragmentlist.get(position);         }         @override         public int getcount() {             return mfragmentlist.size();         }         public void addfragment(android.support.v4.app.fragment fragment, string title) {             mfragmentlist.add(fragment);             mfragmenttitlelist.add(title);         }         @override         public charsequence getpagetitle(int position) {             return null;         }     }      @override     public void onbackpressed() {         drawerlayout drawer = (drawerlayout) findviewbyid(r.id.drawer_layout);         if (drawer.isdraweropen(gravitycompat.start)) {             drawer.closedrawer(gravitycompat.start);         } else {             super.onbackpressed();         }     }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         getmenuinflater().inflate(r.menu.home, menu);         return true;     }      @override     public boolean onoptionsitemselected(menuitem item) {         // handle action bar item clicks here. action bar         // automatically handle clicks on home/up button, long         // specify parent activity in androidmanifest.xml.         int id = item.getitemid();         //noinspection simplifiableifstatement         if (id == r.id.action_logout) {             intent = new intent(getapplicationcontext(), login.class);             startactivity(i);             return true;             }             else if (id == r.id.action_exit) {             finish();             return true;              }          return super.onoptionsitemselected(item);     }      @suppresswarnings("statementwithemptybody")     @override     public boolean onnavigationitemselected(menuitem item) {         // handle navigation view item clicks here.         int id = item.getitemid();          if (id == r.id.nav_home) {             // handle action             fragmenttransaction fragmenttransaction = getsupportfragmentmanager().begintransaction();             fragmenttransaction.replace(r.id.framelayout, new homepage());             fragmenttransaction.commit();          } else if (id == r.id.myvisit) {             fragmenttransaction fragmenttransaction = getsupportfragmentmanager().begintransaction();             fragmenttransaction.replace(r.id.framelayout, new visit());             fragmenttransaction.commit();          } else if (id == r.id.myorder) {             fragmenttransaction fragmenttransaction = getsupportfragmentmanager().begintransaction();             fragmenttransaction.replace(r.id.framelayout, new order());             fragmenttransaction.commit();          } else if (id == r.id.mypaymnet) {             fragment newfragment = new payment();             fragmenttransaction fragmentmanager= getsupportfragmentmanager().begintransaction();             fragmentmanager.commit();           } else if (id == r.id.mydelivery) {             fragment newfragment = new delivery();             fragmenttransaction fragmentmanager= getsupportfragmentmanager().begintransaction();             fragmentmanager.commit();          } else if (id == r.id.dailytask) {             fragment newfragment = new addtask();             fragmenttransaction fragmentmanager= getsupportfragmentmanager().begintransaction();             fragmentmanager.commit();         } else if (id == r.id.scheduletask) {             fragment newfragment = new scheduletask();             fragmenttransaction fragmentmanager= getsupportfragmentmanager().begintransaction();             fragmentmanager.commit();         } else if (id == r.id.onetimetask) {             fragment newfragment = new onetimetask();             fragmenttransaction fragmentmanager= getsupportfragmentmanager().begintransaction();             fragmentmanager.commit();         } else if (id == r.id.myattendence) {             fragment newfragment = new attendence();             fragmenttransaction fragmentmanager= getsupportfragmentmanager().begintransaction();             fragmentmanager.commit();         } else if (id == r.id.lapp) {             fragment newfragment = new leaveapplication();             fragmenttransaction fragmentmanager= getsupportfragmentmanager().begintransaction();             fragmentmanager.commit();         } else if (id == r.id.profile) {             fragment newfragment = new profile();             fragmenttransaction fragmentmanager= getsupportfragmentmanager().begintransaction();             fragmentmanager.commit();         } else if (id == r.id.action_logout) {             fragment newfragment = new homepage();             fragmenttransaction fragmentmanager= getsupportfragmentmanager().begintransaction();             fragmentmanager.commit();             return true;              }            drawerlayout drawer = (drawerlayout) findviewbyid(r.id.drawer_layout);         drawer.closedrawer(gravitycompat.start);         return true;     } } 

now, want move homepage screen while select home in navigation drawer.

homepage.java

    package com.example.sachin.omcommunication;  import android.os.bundle; import android.support.v4.app.fragment; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup;  public class homepage extends fragment {      public homepage(){}     view view;     @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);     }      @override     public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) {         view view = inflater.inflate(r.layout.activity_visit, container, false);         getactivity().settitle("homepage");         return inflater.inflate(r.layout.activity_home_page, container, false);      }    } 

here, posted layout

content_home.xml

   <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical">      <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="wrap_content"             android:background="?attr/colorprimary"             app:layout_scrollflags="scroll|enteralways"             app:popuptheme="@style/themeoverlay.appcompat.light" /> -->          <include android:layout_height="match_parent"             layout="@layout/toolbar"             android:layout_width="wrap_content"             android:id="@+id/toolbar"             ></include>         <android.support.v4.view.viewpager             android:id="@+id/viewpager"             android:layout_width="match_parent"             android:layout_height="0dp"             android:layout_weight="1"             android:background="#ffffff"             app:layout_behavior="@string/appbar_scrolling_view_behavior"  />          <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>   <framelayout android:id="@+id/framelayout" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_alignparenttop="true" >   </framelayout> </linearlayout> 

as same homepage.java set other .java files

 navigationview.setnavigationitemselectedlistener(new navigationview.onnavigationitemselectedlistener() {              // method trigger on item click of navigation menu             @override             public boolean onnavigationitemselected(menuitem menuitem) {                   //checking if item in checked state or not, if not make in checked state                 if (menuitem.ischecked()) menuitem.setchecked(false);                 else menuitem.setchecked(true);                  //closing drawer on item click                 drawerlayout.closedrawers();                  //check see item being clicked , perform appropriate action                 switch (menuitem.getitemid()) {                       //replacing main content contentfragment our inbox view;                     case r.id.drawer_how:                            fragmenttransaction fragmenttransaction = getsupportfragmentmanager().begintransaction();                          fragmenttransaction.replace(r.id.framelayout, new homepage());                          fragmenttransaction.commit();                          return true;     // rest of options show toast on click                   .....                      default:                         toast.maketext(getapplicationcontext(), "somethings wrong", toast.length_short).show();                         return true;                  }             }         });