android - StaggeredGridView stucks inbetween while scrolling -

i displaying images storage of device in app.the problem having when scrolling not smooth.its stucking inbetween.i using etsy/androidstaggeredgrid , using below code.i tried putting tasks inside async background task still having issue. why stucking inbetween , how can resolve this?

galleryfragment

@override public view oncreateview(layoutinflater inflater, viewgroup container,                          bundle savedinstancestate) {      final view rootview = inflater.inflate(r.layout.fragment_gallery, container, false);     galleries=new arraylist<gallery>();             ((actionbaractivity) getactivity()).getsupportactionbar().show();     gridview = (staggeredgridview)rootview.findviewbyid(r.id.gridcamera);     progressbar=(progressbar)rootview.findviewbyid(r.id.progressbar);         gallerylist=new cameragalleryadapter(getactivity().getapplicationcontext(), r.layout.gallery_grid,galleries);     gridview.setadapter(gallerylist);      asynctaskrunner runner = new asynctaskrunner();      runner.execute();      return rootview; }  private class asynctaskrunner extends asynctask<string, string, void> {      private string resp;      @override     protected void doinbackground(string... params)     {          int count,count2,count3,count4;          ((cameraactivity)getactivity()).setonbackpressedlistener(new basebackpressedlistener(getactivity(),true));          final string[] columns = { mediastore.images.media.data, mediastore.images.media._id,mediastore.video.media.data,         };         final string orderby = mediastore.images.media._id;         cursor cursor = getactivity().getcontentresolver().query(                 mediastore.images.media.external_content_uri, columns, null,                 null, orderby);          count = cursor.getcount();         cursor cursor2 = getactivity().getcontentresolver().query(                 mediastore.images.media.internal_content_uri, columns, null,                 null, orderby);         count2 = cursor2.getcount();          cursor cursor3 = getactivity().getcontentresolver().query(                 mediastore.video.media.external_content_uri, columns, null,                 null, orderby);         count3 = cursor3.getcount();         cursor cursor4 = getactivity().getcontentresolver().query(                 mediastore.video.media.internal_content_uri, columns, null,                 null, orderby);         count4 = cursor4.getcount();           (int = 0; < count; i++)         {             cursor.movetoposition(i);             int datacolumnindex = cursor.getcolumnindex(mediastore.images.media.data);              gallery ga=new gallery();             ga.setimageurl(cursor.getstring(datacolumnindex));             ga.setisimage(true);             galleries.add(ga);         }         (int = 0; < count2; i++)         {             cursor2.movetoposition(i);             int datacolumnindex = cursor2.getcolumnindex(mediastore.images.media.data);             gallery ga=new gallery();;             ga.setimageurl(cursor2.getstring(datacolumnindex));             ga.setisimage(true);             galleries.add(ga);          }          (int = 0; < count3; i++)         {               cursor3.movetoposition(i);              int datacolumnindex = cursor3.getcolumnindex(mediastore.video.media.data);              bitmap thumb = thumbnailutils.createvideothumbnail(cursor3.getstring(datacolumnindex),                     mediastore.images.thumbnails.mini_kind);              gallery ga=new gallery();              ga.setvideothumbnail(thumb);              ga.setvideourl(cursor3.getstring(datacolumnindex));              ga.setisimage(false);             galleries.add(ga);           }         (int = 0; < count4; i++)         {               cursor4.movetoposition(i);              int datacolumnindex = cursor4.getcolumnindex(mediastore.video.media.data);              bitmap thumb = thumbnailutils.createvideothumbnail(cursor4.getstring(datacolumnindex),mediastore.images.thumbnails.mini_kind);              gallery ga = new gallery();              ga.setvideothumbnail(thumb);              ga.setvideourl(cursor4.getstring(datacolumnindex));              ga.setisimage(false);             galleries.add(ga);           }         return null;     }        @override     protected void onpreexecute() {      }      @override     protected void onpostexecute(void avoid) {         super.onpostexecute(avoid);         gallerylist.notifydatasetchanged();         progressbar.setvisibility(view.gone);     }      @override     protected void onprogressupdate(string... text) {      } } 

cameragalleryadapter

public class cameragalleryadapter extends baseadapter {     arraylist<gallery> itemlist;     layoutinflater vi;     int resource;     viewholder holder;     bitmap bm;     public cameragalleryadapter(context context, int resource, arraylist<gallery> objects) {          vi = (layoutinflater) context                 .getsystemservice(context.layout_inflater_service);         resource = resource;         itemlist = objects;      }       @override     public int getcount() {         return itemlist.size();     }      @override     public object getitem(int i) {         return null;     }      @override     public long getitemid(int i) {         return 0;     }      @override     public view getview(int position, view convertview, viewgroup parent)     {          view v = convertview;         if (v == null) {             holder = new viewholder();             v = vi.inflate(resource, null);             holder.imageview = (imageview) v.findviewbyid(r.id.ivimageg);             holder.playicon= (imageview) v.findviewbyid(r.id.galleryplay);              v.settag(holder);         } else {             holder = (viewholder) v.gettag();         }   if(itemlist.get(position).getisimage())  {              holder.playicon.setvisibility(view.invisible);       asynctaskrunner runner = new asynctaskrunner();       runner.execute(itemlist.get(position).getimageurl());      bm= null ;      try {          bm = runner.get();      } catch (interruptedexception e) {          e.printstacktrace();      } catch (executionexception e) {          e.printstacktrace();      }      holder.imageview.setimagebitmap(bm);  }  else  {             holder.playicon.setvisibility(view.visible);             holder.imageview.setimagebitmap(itemlist.get(position).getvideothumbnail());  }         return v;      }      static class viewholder {         public imageview imageview;         public imageview playicon;      }     private class asynctaskrunner extends asynctask<string, string,bitmap>     {          private string resp;          @override         protected bitmap doinbackground(string... params)         {             resp=params[0];             bitmap bm = decodesampledbitmapfromuri(resp, 220, 220);             return bm;         }            @override         protected void onpreexecute() {          }          @override         protected void onpostexecute(bitmap avoid) {             super.onpostexecute(avoid);           }          @override         protected void onprogressupdate(string... text) {          }     }     public bitmap decodesampledbitmapfromuri(string path, int reqwidth, int reqheight) {          bitmap bm = null;          final bitmapfactory.options options = new bitmapfactory.options();         options.injustdecodebounds = true;         bitmapfactory.decodefile(path, options);           options.insamplesize = calculateinsamplesize(options, reqwidth, reqheight);           options.injustdecodebounds = false;         bm = bitmapfactory.decodefile(path, options);          return bm;     }      public int calculateinsamplesize(              bitmapfactory.options options, int reqwidth, int reqheight)     {          final int height = options.outheight;         final int width = options.outwidth;         int insamplesize = 1;          if (height > reqheight || width > reqwidth) {             if (width > height) {                 insamplesize = math.round((float)height / (float)reqheight);             } else {                 insamplesize = math.round((float)width / (float)reqwidth);             }         }          return insamplesize;     }  } 

its common issue bcoz of large image size loading in view each time scroll .... on come issue can try lazy loading imgae technique.. http://androidexample.com/download_images_from_web_and_lazy_load_in_listview_-_android_example/index.php?view=article_discription&aid=112&aaid=134