android - Fragment being created again -

i using fragment implement viewpager,the viewpager fragment,i implementing button , clicking on fragment goes previous fragment, on pressing button previous fragment again loading , getting response again. how can prevent that. have added code below.

photo fragment:-

public view oncreateview(layoutinflater inflater, viewgroup container,             bundle savedinstancestate)      {                 view view = inflater.inflate(r.layout.layout_photo, container, false);     butterknife.inject(this, view);     sharedpref = getactivity().getpreferences(context.mode_private);     editor = sharedpref.edit();     if (sharedpref.contains("isviewpagerstarted")) {     isviewpagerstarted = sharedpref.getboolean("isviewpagerstarted",false);     }      log.e("pagerstart", "" + isviewpagerstarted);     if (isviewpagerstarted) {         backbutton.setvisibility(view.visible);         animation rightswipe = animationutils.loadanimation(getactivity(),                 r.anim.slide_out_left);         backbutton.startanimation(rightswipe);          backbutton.setvisibility(view.invisible);     } else {         backbutton.setvisibility(view.invisible);     }      editor.clear();     editor.commit();      // sharedpref = getactivity().getpreferences(context.mode_private);     //      options = new displayimageoptions.builder()             .showimageforemptyuri(r.drawable.plc_gallery).cacheondisk(true)             .build();      return view; }  @override public void onactivitycreated(bundle savedinstancestate) {     // todo auto-generated method stub     super.onactivitycreated(savedinstancestate);      mcontext = getactivity();     fonthelper.setfontface(galleryheader, fonttype.font5);      getgalleryinfo();     onclickgridview();  }  private void onclickgridview() {     gridview.setonitemclicklistener(new onitemclicklistener() {         public void onitemclick(adapterview<?> parent, view v,                 int position, long id) {              // string backstatename = fragment.getclass().getname();              callviewpagerstarted();              viewpagerfragment viewpagerfragment = new viewpagerfragment();             bundle bun = new bundle();             bun.putint("position", position);             bun.putstringarray("fullimage", imageurls);             // bun.putstringarray("desc", description);             viewpagerfragment.setarguments(bun);             transaction = getactivity().getsupportfragmentmanager()                     .begintransaction();             transaction.addtobackstack(null);             transaction.replace(r.id.framelayoutfragment,                     viewpagerfragment, "viewfrag");              transaction.commit();              /*              * // send intent singleviewactivity intent intent = new              * intent(getactivity(),viewpageractivity.class); // pass image              * index bundle bundle=new bundle();              * bundle.putint("position",position);              * bundle.putstringarray("imagearray",imageurls);              * bundle.putstringarray("description",description);              * intent.putextras(bundle); startactivity(intent);              */         }      });  }  public void callviewpagerstarted() {      editor.putboolean("isviewpagerstarted", true);     editor.commit();  }  @override public void onresume() {     // todo auto-generated method stub     super.onresume();     /* getgalleryinfo(); */ }  private void getgalleryinfo() {     getmesagallery gettempleinfo = new getmesagallery();     // gettempleinfo.setappid("8eb24199-6838-43ac-b9ca-40031ab37e65");     progresbar.start(mcontext);      servicemanager.instance().enqueue(gettempleinfo, new servicelistener() {          @override         public void oncomplete(response arg0) {              progresbar.stop();             getmesagallerysresponse response = (getmesagallerysresponse) arg0;             if (response.isvalid()) {                 response.getimagedto();                 final arraylist<imagedto> galleryimagelist = response                         .getimagedto();                 thumbnailurls = new string[galleryimagelist.size()];                 // description = new string[galleryimagelist.size()];                 imageurls = new string[galleryimagelist.size()];                 (int = 0; < galleryimagelist.size(); i++) {                     try {                         thumbnailurls[i] = galleryimagelist.get(i)                                 .getthumbnailurl();                          /*                          * description[i] = galleryimagelist.get(i)                          * .getdescription();                          */                         imageurls[i] = galleryimagelist.get(i).getimageurl();                         loadgridview();                     } catch (exception e) {                          e.printstacktrace();                     }                 }              } else {              }          }     });  }  private void loadgridview() {      try {          gridviewadapter adapter = new gridviewadapter(getactivity(),                 thumbnailurls);          // set adapter gridview         gridview.setadapter(adapter);     } catch (exception e) {         e.printstacktrace();     } }  @override public void onsaveinstancestate(bundle outstate) {     // add variable outstate here     super.onsaveinstancestate(outstate); } 

viewpager fragment:

public view oncreateview(layoutinflater inflater, viewgroup container,             bundle savedinstancestate) {         view view = inflater.inflate(r.layout.layout_viewpager, container,                 false);         butterknife.inject(this, view);      backbutton.setvisibility(view.visible);      animation rightswipe = animationutils.loadanimation(getactivity(),             r.anim.slide_in_right);     backbutton.startanimation(rightswipe);      log.e("insdie", "viewpager");      return view; }  @override public void onactivitycreated(bundle savedinstancestate) {     // todo auto-generated method stub     super.onactivitycreated(savedinstancestate);      bundle arguments = getarguments();     position = arguments.getint("position");     log.e("position", "" + position);     fullimageuris = arguments.getstringarray("fullimage");     txtdesc = arguments.getstringarray("desc");      fonthelper.setfontface(description, fonttype.font6);     description.setpaintflags(description.getpaintflags()             | paint.underline_text_flag);      /*      * list<fragment> imagefragments = getfragments();      */     pageadapter = new mypageradapter(getactivity()             .getsupportfragmentmanager(), fullimageuris);      mpager.setadapter(pageadapter);      mindicator.setviewpager_text(mpager,description,txtdesc);     mpager.setcurrentitem(position); }  /*  * @override public void onresume() { // todo auto-generated method stub  * super.onresume(); pageadapter = new mypageradapter(getactivity()  * .getsupportfragmentmanager(),fullimageuri);  * mpager.setcurrentitem(position); mpager.setadapter(pageadapter);  * mindicator.setviewpager_text(mpager, description, txtdesc); }  */ @onclick(r.id.left_arrow) public void tapleftarrow() {     mpager.setcurrentitem(getitem(-1), true); }  private int getitem(int i) {     return mpager.getcurrentitem() + i; }  @onclick(r.id.right_arrow) public void taprightarrow() {     mpager.setcurrentitem(getitem(+1), true);  }  @onclick(r.id.imgbackbtn) public void movetopreviousfragment() {      fragmentmanager fm = getfragmentmanager();     if (fm.getbackstackentrycount() > 0) {         log.i("mainactivity", "popping backstack");         fm.popbackstack();      } else {         log.i("mainactivity", "nothing on backstack, calling super");      }     // getactivity().onbackpressed();  } 

i checked instance of fragment , solved problem

public static photofragment instance() {         if (photofragment == null) {             photofragment = new photofragment();         }         return photofragment;     }