android - ViewPager doesn't update ImageView even when i finish its activity and start it again with different values -

i'm using viewpager make scrollable photos gallery take photos urls sqlite database depending on intent value passed previous activity.

my problem : when start photo gallery first time , works correctly when close , start again different urls images ,viewpager doesn't update imageview , page title.

this code :

     import java.util.arraylist;      import java.util.locale;      import android.content.intent;      import android.database.cursor;      import android.database.sqlite.sqlitedatabase;      import android.database.sqlite.sqliteexception;      import android.os.bundle;      import android.support.v4.app.fragment;      import android.support.v4.app.fragmentactivity;      import android.support.v4.app.fragmentmanager;      import android.support.v4.app.fragmentpageradapter;      import android.support.v4.view.viewpager;      import android.view.layoutinflater;      import android.view.menu;      import android.view.view;      import android.view.viewgroup;      import android.widget.imageview;      import android.widget.toast;      public class photogalleryactivity extends fragmentactivity {  /**  * {@link android.support.v4.view.pageradapter} provide  * fragments each of sections. use  * {@link android.support.v4.app.fragmentpageradapter} derivative,  * keep every loaded fragment in memory. if becomes memory  * intensive, may best switch  * {@link android.support.v4.app.fragmentstatepageradapter}.  */ sectionspageradapter msectionspageradapter;  /**  * {@link viewpager} host section contents.  */ viewpager mviewpager; string pid; int photoscount; intent context; sqlitedatabase db; static arraylist<placephoto> photos = new arraylist<placephoto>(); placephoto ph; @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.photo_gallery);     context = getintent();     //if (context.getextras().getstring("pid") != null )     pid = context.getextras().getstring("pid");     //else pid="0";     photoscount = context.getextras().getint("photos_count");     try {         db = sqlitedatabase.opendatabase(                 "/data/data/"+getpackagename()+"/itartus.db3", null,                 sqlitedatabase.open_readwrite);         cursor c = db.rawquery("select * photos place_id="+pid,null);         while(c.movetonext()) {             ph = new placephoto(c.getint(0),c.getint(1),c.getstring(3),c.getstring(2));             photos.add(ph);         }     }     catch(sqliteexception e){         toast.maketext(getapplicationcontext(),"حدث خطأ ما",toast.length_long).show();     }     // create adapter return fragment each of 3     // primary sections of app.     msectionspageradapter = new sectionspageradapter(             getsupportfragmentmanager());      // set viewpager sections adapter.     mviewpager = (viewpager) findviewbyid(r.id.pager);     mviewpager.setadapter(msectionspageradapter);   }  @override public boolean oncreateoptionsmenu(menu menu) {     // inflate menu; adds items action bar if present.     getmenuinflater().inflate(r.menu.photo_gallery, menu);     return true; }  /**  * {@link fragmentpageradapter} returns fragment corresponding  * 1 of sections/tabs/pages.  */ public class sectionspageradapter extends fragmentpageradapter  {      public sectionspageradapter(fragmentmanager fm) {         super(fm);     }      @override     public fragment getitem(int position) {         // getitem called instantiate fragment given page.         // return dummysectionfragment (defined static inner class         // below) page number lone argument.         fragment fragment = new dummysectionfragment();         bundle args = new bundle();         args.putint("position", position);         fragment.setarguments(args);         return fragment;     }      @override     public int getcount() {         return photoscount;     }      @override     public charsequence getpagetitle(int position) {         locale l = locale.getdefault();         return photos.get(position).photoname;     }  }  /**  * dummy fragment representing section of app,  * displays dummy text.  */ public static class dummysectionfragment extends fragment {     /**      * fragment argument representing section number      * fragment.      */     public static final string arg_section_number = "section_number";      public dummysectionfragment() {     }      @override     public view oncreateview(layoutinflater inflater, viewgroup container,             bundle savedinstancestate) {         view rootview = inflater.inflate(                 r.layout.fragment_photo_gallery_dummy, container, false);         imageview img = (imageview) rootview.findviewbyid(r.id.photo_result);         bundle args = getarguments();         int position = args.getint("position");         img.settag(photos.get(position));         imagedownloader = new imagedownloader(img,this.getactivity());         i.execute(photos.get(position).url);         return rootview;     }  } 

}

solved myself

solution : initialize static arraylist photos inside oncreate() .