android - ImageView will not update when touched. "res cannot be resolved" -

    playbutton.setontouchlistener(new ontouchlistener()      {         @override         public boolean ontouch(view arg0, motionevent arg1)         {             switch(arg1.getaction())             {                 case motionevent.action_down:                 {                     playbutton.setimagebitmap(res.getdrawable(r.drawable.play_pushed));                     break;                 }                  case motionevent.action_cancel:                 {                     playbutton.setimagebitmap(res.getdrawable(r.drawable.play));                     break;                 }             }              return true;         }     }); 

the 2 res keywords underlined in red. trying change image darker version of when touched. necessary images located in res folder. idea problem is?

update: updated code little , works perfectly:

    playbutton.setontouchlistener(new ontouchlistener()      {         @override         public boolean ontouch(view arg0, motionevent arg1)         {             switch(arg1.getaction())             {                 case motionevent.action_down:                 {                     playbutton.setimagedrawable(getresources().getdrawable(r.drawable.play_pushed));                     break;                 }                  case motionevent.action_up:                 {                     playbutton.setimagedrawable(getresources().getdrawable(r.drawable.play));                     break;                 }             }              return true;         }     }); 

try changeing them

getresources().getdrawable(...) 

since inside of listener may need activityname.this.getresources().getdrawable()

playbutton.setimagebitmap(getresources().getdrawable(r.drawable.play_pushed)); 

res folder name isn't variable have declared system doesn't know is.

getresources()