android - Fragment elements remain even when the fragment has been changed -

i'm using navigation drawer switch fragments, elements first fragment stay present on changing fragments.

the code of main activity:

    protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         ...          ...         drawer result = new drawerbuilder()                 .withactivity(this)                 .withtoolbar(toolbar)                 .adddraweritems(                         item1,                         new dividerdraweritem(),                         item2,                         new secondarydraweritem().withname(r.string.drawer_item_settings)                 )                 .withondraweritemclicklistener(new drawer.ondraweritemclicklistener() {                     @override                     public boolean onitemclick(view view, int position, idraweritem draweritem) {                         // clicked item :d                         fragmentmanager manager = getsupportfragmentmanager();                         fragmenttransaction transaction = manager.begintransaction();                         fragment fragment = new fragment();                          switch (position)                         {                             case 0:                                 fragment = new homefragment();                                 log.d("switch", "search");                                 break;                             case 1:                                  break;                             case 2:                                 fragment = new inventoryfragment();                                 log.d("switch", "inventory");                                 break;                             case 3:                                 fragment = new settingsfragment();                                 log.d("switch", "settings");                                 break;                         }                          transaction.replace(r.id.main_frame, fragment);                         transaction.commit();                         return false;                     }                 })                 .build();     } 

the following code activity_main.xml

<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.coordinatorlayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:fitssystemwindows="true"     android:background="?android:windowbackground"     tools:context="com.example.nihal.xchange.mainactivity">      ...      <framelayout         android:layout_width="match_parent"         android:layout_height="match_parent"         android:layout_weight="1"         android:id="@+id/main_frame">         <fragment             android:name="com.example.nihal.xchange.homefragment"             android:id="@+id/current_fragment"             android:layout_width="fill_parent"             android:layout_height="fill_parent" />      </framelayout> </android.support.design.widget.coordinatorlayout> 

elements home fragment remain present across fragments behavior not exhibited elements of other fragment. how prevent happening?

don't include home fragment in xml. keep container framelayout empty , add initial fragment activity starts. in activity's oncreate method, add home fragment dynamically in beginning.

activity_main.xml -

<framelayout     android:layout_width="match_parent"     android:layout_height="match_parent"     android:layout_weight="1"     android:id="@+id/main_frame">      <!-- removed fragment here -->  </framelayout> 

in oncreate(), add dynamically -

if (findviewbyid(r.id.main_frame) != null) {         if (savedinstancestate != null)             return;      fragmentmanager manager = getsupportfragmentmanager();     fragmenttransaction transaction = manager.begintransaction();     transaction.add(r.id.main_frame, new homefragment());     transaction.commit(); }