java android handler timer in for loop -


i have 4 imagebutton , want change images of them randomly 2 seconds. doesn't work. problem here? don't understand work of handlers. want: change image of buttonimage, wait 5 seconds, change image of buttonimage

for (int = 0; < cpu_array.length; i++) {         actual = cpu_rnd.nextint(4);         cpu_array[i] = actual;         switch (actual) {         case 0:             bluebutton.setimageresource(r.drawable.blue_a);             break;         case 1:             redbutton.setimageresource(r.drawable.red_a);             break;         case 2:             greenbutton.setimageresource(r.drawable.green_a);             break;         case 3:             purplebutton.setimageresource(r.drawable.purple_a);             break;          default:             break;         }           handler.postdelayed(new runnable() {             @override             public void run() {                 // after 2s = 2000ms                 bluebutton.setimageresource(r.drawable.blue);                 redbutton.setimageresource(r.drawable.red);                 greenbutton.setimageresource(r.drawable.green);                 purplebutton.setimageresource(r.drawable.purple);             }         }, 2000);      }

this code worked me:

   final button startbookmarksbutton = (button) findviewbyid(r.id.start_bookmarks_button);    startbookmarksbutton.setbackgroundcolor(color.blue);    new handler().postdelayed(new runnable() {         @override         public void run() {             startbookmarksbutton.setbackgroundcolor(color.green);         }     }, 2000);

so think problem might somewhere else in code. sure random number logic in loop working ? why don't try getting delay working first , debug random part. or perhaps problem images.


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