ListView中 更改选中的item的背景色

lv.setOnItemClickListener(new OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
            long arg3) {
            for (int i = 0; i < adapter.getCount(); i++) {
            View v = arg0.getChildAt(i);
            if (arg2 == i) {
            v.setBackgroundColor(0x5653fbff);
            }else{
            v.setBackgroundColor(Color.TRANSPARENT);
                       }
                   }
               }
         });