Android: can't load in a detail fragment in master detail -


i have app works on handheld device , want work on tablet using master/detail flow. have informationfragment shown when click on item in listview. app works on handheld device, on tablet exception there no view found two_pane_information_container. here code:

public class mainactivity extends fragmentactivity {     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         twopane = getresources().getboolean(r.bool.istablet);         setcontentview(r.layout.main_layout);         // setting navigation view , listfragment etc.     }     public static class informationlistfragment extends listfragment {     @override     public void onlistitemclick(listview l, view v, int position, long id) {         info o = (info) getlistadapter().getitem(position);         bundle b = new bundle();         b.putparcelable("info", o);         if (twopane) {             // load fragment right of list             // part causing problems             android.support.v4.app.fragmenttransaction ft =getfragmentmanager().begintransaction();             informationfragment ia = new informationfragment();             ia.setarguments(b);             ft.replace(r.id.two_pane_information_container, ia);             ft.commit();         } else {             // activity displays inforrmationfragment                     // works              intent = new intent(getactivity(), informationactivity.class);             i.putextra("info", b);             startactivity(i);         }     } }

res/layout/fragment_main.xml

<android.support.v4.widget.drawerlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/drawer_layout"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:background="@color/table_background" >      <!-- main content view -->      <android.support.v4.view.viewpager         android:id="@+id/pager"         android:layout_width="match_parent"         android:layout_height="match_parent" >     </android.support.v4.view.viewpager>      <!-- navigation drawer -->      <listview         android:id="@+id/left_drawer"         android:layout_width="240dp"         android:layout_height="match_parent"         android:layout_gravity="start"         android:background="@android:color/background_dark"         android:choicemode="singlechoice"         android:divider="@android:color/transparent"         android:dividerheight="1dip" />  </android.support.v4.widget.drawerlayout>

res/layout/main_twopane.xml

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:orientation="horizontal" >      <include         android:layout_width="400dp"         layout="@layout/fragment_main" />      <linearlayout         android:id="@+id/two_pane_information_container"         android:layout_width="fill_parent"         android:layout_height="fill_parent"         android:orientation="horizontal" >     </linearlayout>  </linearlayout>

res/values/layouts.xml

<?xml version="1.0" encoding="utf-8"?> <resources>     <bool name="istablet">false</bool>     <item name="main_layout" type="layout">@layout/fragment_main</item> </resources>

res/values-large/layouts.xml , res/values-sw600dp/layouts.xml 

<?xml version="1.0" encoding="utf-8"?> <resources>      <bool name="istablet">true</bool>     <item name="main" type="layout">@layout/main_twopane</item>  </resources>

your layout name in final 2 xml files differs.

<item name="main" type="layout">

should be

<item name="main_layout" type="layout">

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