java - Skipped 46 frames! The application may be doing too much work on its main thread -


i'm trying use recyclerview , put 8 images in adapter dynamically. have titles of each image create 2 arrays , loop multiple condition can set want. works not want. infact in log:

skipped 46 frames!  application may doing work on main thread.

and scroll of list has strong lag. how can solve? code

public class imageadapter  extends recyclerview.adapter<imageadapter.viewholder> {      list<griditem> mitems;     private static wallpapermanager wallpaper;      string[] title = {             "material1",             "material2",             "wallpaper1",             "wallpaper2",             "wallpaper3",             "wallpaper4",             "wallpaper5",             "wallpaper6",             "wallpaper7"         };      private static int[] sdrawables = {          r.drawable.material,          r.drawable.materialuno,          r.drawable.materialdue,         r.drawable.materialtre,         r.drawable.materialquattro,          r.drawable.materialcinque,          r.drawable.materialsei,          r.drawable.materialsette,          r.drawable.materialotto         };      public imageadapter() {         super();         mitems = new arraylist<griditem>();          (int i=0, j=0; < title.length && j < sdrawables.length; i++, j++) {              griditem walltitle = new griditem();             walltitle.setname(title[i]);             walltitle.setthumbnail(sdrawables[j]);             mitems.add(walltitle);         }      }      @override     public viewholder oncreateviewholder(viewgroup viewgroup, int i) {         view v = layoutinflater.from(viewgroup.getcontext()).inflate(r.layout.image_grid_layout, viewgroup, false);         viewholder viewholder = new viewholder(v);         return viewholder;     }      @override     public void onbindviewholder(viewholder viewholder, final int i) {         final griditem nature = mitems.get(i);         viewholder.tvspecies.settext(nature.getname());         viewholder.imgthumbnail.setimageresource(nature.getthumbnail());          viewholder.imgthumbnail.setonclicklistener(new onclicklistener() {              @override             public void onclick(view v) {                 log.i("click",nature.tostring());             }         });     }      @override     public int getitemcount() {          return mitems.size();     }      class viewholder extends recyclerview.viewholder{          public imageview imgthumbnail;         public textview tvspecies;          public viewholder(view itemview) {             super(itemview);             imgthumbnail = (imageview)itemview.findviewbyid(r.id.img_thumbnail);             tvspecies = (textview)itemview.findviewbyid(r.id.tv_species);         }     } }

edited entire adapter

the real walls web array of drawable array of links or json

you absolutely not want loading full-size wallpaper images use thumbnails in grid. slow, , run out of heap space.

for short-term tests, i'd prepare thumbnails using graphics editor, use those.

for "for realz" app, wallpapers downloaded, want use third-party library, picasso or universal image loader, can load images in background, downsample them thumbnail size, , on. this sample app demonstrates listview picasso (reading in stack overflow questions). this sample app demonstrates recyclerview universal image loader (reading in video thumbnails videos on device).


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