android - Binary XML file line #41: Error inflating class fragment -

error in log: pastebin.com/ylvmkad4

fragmentsettings.class:

package com.android.app;  import android.os.bundle; import android.preference.listpreference; import android.preference.preferencefragment; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup;  public class fragmentsettings extends preferencefragment {      [..]      @override         public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) {              mlistpreference = (listpreference) getpreferencemanager().findpreference("preference_key");              return inflater.inflate(r.layout.activity_main, container, false);         } } 

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?> <android.support.v4.widget.drawerlayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     android:id="@+id/drawer"     android:layout_width="match_parent"     android:fitssystemwindows="true"     android:layout_height="match_parent">      <linearlayout android:layout_width="match_parent"         android:layout_height="match_parent"         android:orientation="vertical">          <include             android:id="@+id/toolbar_actionbar"             layout="@layout/toolbar_default"             android:layout_width="match_parent"             android:layout_height="wrap_content" />          <framelayout             android:id="@+id/container"             android:layout_width="match_parent"             android:clickable="true"             android:layout_height="match_parent">             <listview                 android:id="@android:id/list"                 android:layout_width="match_parent"                 android:layout_height="match_parent">             </listview>         </framelayout>     </linearlayout>     <!-- android:layout_margintop="?android:attr/actionbarsize"-->     <com.android.app.scriminsetsframelayout         android:id="@+id/scriminsetsframelayout"         android:layout_width="@dimen/navigation_drawer_width"         android:layout_height="wrap_content"         android:fitssystemwindows="true"         android:layout_gravity="start"         app:insetforeground="#4000"         android:elevation="10dp">          <fragment             android:id="@+id/fragment_drawer"             android:name="com.android.app.navigationdrawerfragment"             android:layout_width="@dimen/navigation_drawer_width"             android:layout_height="match_parent"             android:fitssystemwindows="true"             app:layout="@layout/fragment_navigation_drawer" />     </com.android.app.scriminsetsframelayout>   </android.support.v4.widget.drawerlayout> 

devices:

oppo n1, android 4.2.2 samsung galaxy note 1, android 5.1.1 

i've spent hours , hours error , couldn't find it. clue same app working on android 5.1.1.

additional:

mainactivity.java pastebin.com/a2nzlzfm

navigationdrawerfragment.java pastebin.com/pqtmipp3

fragment_navigation_drawer.xml pastebin.com/eveadv17

<fragment      android:id="@+id/fragment_drawer"      android:name="com.android.app.navigationdrawerfragment"      android:layout_width="@dimen/navigation_drawer_width"      android:layout_height="match_parent"      android:fitssystemwindows="true"/> 

use rather, , inflate layout in oncreateview() android take care of adding viewgroup/window etc etc

it line in mainactivity

 // set drawer.     mnavigationdrawerfragment.setup(r.id.fragment_drawer,               (drawerlayout) findviewbyid(r.id.drawer), mtoolbar); 

remove , error go. next thing let activity handle drawerlayout himself. transfer drawer codes activity , forget setup() method in fragment

the reason since declared fragment embeded in activity, android initiates you, not need set up

hope works