java - Fragment Webpage is not currently in the FragmentManager -


i have application contains viewpager loads 3 webpages local html file, works fine when try start intent in different activity crashes following message:

05-15 11:33:12.533    7702-7702/com.example.android.horizontalpaging e/fragmentmanager﹕ fragment webpage{22947acd} not in fragmentmanager 05-15 11:33:12.533    7702-7702/com.example.android.horizontalpaging e/fragmentmanager﹕ activity state: 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ active fragments in 3e30ef82: 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ #0: null 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ #1: null 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ #2: null 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ added fragments: 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ #0: webpage{22947acd} 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ #1: webpage{245bc693} 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ #2: webpage{1a4686d0} 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ fragmentmanager misc state: 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ mactivity=null 05-15 11:33:12.534    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ mcontainer=null 05-15 11:33:12.535    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ mcurstate=0 mstatesaved=true mdestroyed=true 05-15 11:33:12.535    7702-7702/com.example.android.horizontalpaging d/fragmentmanager﹕ mavailindices: [0, 1, 2] 05-15 11:33:12.535    7702-7702/com.example.android.horizontalpaging d/androidruntime﹕ shutting down vm 05-15 10:52:38.309    2589-2589/com.example.android.horizontalpaging e/androidruntime﹕ fatal exception: main     process: com.example.android.horizontalpaging, pid: 2589     java.lang.illegalstateexception: fragment webpage{3e30ef82} not in fragmentmanager             @ android.support.v4.app.fragmentmanagerimpl.putfragment(fragmentmanager.java:571)             @ android.support.v4.app.fragmentstatepageradapter.savestate(fragmentstatepageradapter.java:188)             @ android.support.v4.view.viewpager.onsaveinstancestate(viewpager.java:1270)             @ android.view.view.dispatchsaveinstancestate(view.java:13669)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2859)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2865)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2865)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2865)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2865)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2865)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2865)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2865)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2865)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2865)             @ android.view.viewgroup.dispatchsaveinstancestate(viewgroup.java:2865)             @ android.view.view.savehierarchystate(view.java:13652)             @ com.android.internal.policy.impl.phonewindow.savehierarchystate(phonewindow.java:1967)             @ android.app.activity.onsaveinstancestate(activity.java:1366)             @ android.app.activitygroup.onsaveinstancestate(activitygroup.java:66)             @ android.app.tabactivity.onsaveinstancestate(tabactivity.java:112)             @ android.app.activity.performsaveinstancestate(activity.java:1298)             @ android.app.instrumentation.callactivityonsaveinstancestate(instrumentation.java:1288)             @ android.app.activitythread.callcallactivityonsaveinstancestate(activitythread.java:3958)             @ android.app.activitythread.performstopactivityinner(activitythread.java:3369)             @ android.app.activitythread.handlestopactivity(activitythread.java:3425)             @ android.app.activitythread.access$1100(activitythread.java:151)             @ android.app.activitythread$h.handlemessage(activitythread.java:1332)             @ android.os.handler.dispatchmessage(handler.java:102)             @ android.os.looper.loop(looper.java:135)             @ android.app.activitythread.main(activitythread.java:5254)             @ java.lang.reflect.method.invoke(native method)             @ java.lang.reflect.method.invoke(method.java:372)             @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:903)             @ com.android.internal.os.zygoteinit.main(zygoteinit.java:698) 

here's activity contains viewpager :

public class azkar extends actionbaractivity {      public  static  sectionspageradapter msectionspageradapter;     public static viewpager mviewpager;     string[] tabstitle = {"أذكار الصباح","أذكار المساء","أذكار الصلاة"};      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.azkar);          msectionspageradapter = new sectionspageradapter(getsupportfragmentmanager());          mviewpager = (viewpager) findviewbyid(r.id.pager);         mviewpager.setoffscreenpagelimit(3-1);         mviewpager.setadapter(msectionspageradapter);          pagerslidingtabstrip tabs = (pagerslidingtabstrip) findviewbyid(r.id.tabs);         tabs.settextsize(40);         tabs.setviewpager(mviewpager);      }        public class sectionspageradapter extends fragmentstatepageradapter{           public sectionspageradapter(fragmentmanager fm) {             super(fm);         }           @override         public fragment getitem(int position) {              fragment fragment = null;             bundle args = new bundle();              switch (position){                 case 0:                     fragment = new webpage();                     args.putint(webpage.arg_section_number, position);                     fragment.setarguments(args);                     break;                 case 1:                     fragment = new webpage();                     args.putint(webpage.arg_section_number, position);                     fragment.setarguments(args);                     break;                 default:                     fragment = new webpage();                     args.putint(webpage.arg_section_number, position);                     fragment.setarguments(args);                     break;             }              return fragment;          }          public int getitemposition(object object) {              if(object==null)                 return position_unchanged;              return position_none;         }          @override         public charsequence getpagetitle(int position) {             return tabstitle[position];         }          @override         public int getcount() {             return 3;         }      }    } 

and this's webpage fragment:

public class webpage extends fragment {      public static final string arg_section_number = "section_number";     private webview webview;      public webpage() {     }      @override     public view oncreateview(layoutinflater inflater, viewgroup container,                              bundle savedinstancestate) {          view rootview = inflater.inflate(r.layout.webpage, container, false);         textview pagenumber = (textview) rootview.findviewbyid(r.id.pagenumber);         pagenumber.settext(integer.tostring(getarguments().getint(arg_section_number)));          webview = (webview) rootview.findviewbyid(r.id.webview);          int number = getarguments().getint(arg_section_number);          string file = null;          switch (number){             case 0:                 file = "morning.html";                 break;             case 1:                 file = "evning.html";                 break;             case 2:                 file = "prayer.html";                 break;             default:                 break;          }          webview.loadurl("file:///android_asset/"+file);          return rootview;     }      @override     public void onlowmemory() {         super.onlowmemory();     }  } 

hope figure out fix this. in advance


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