code: @Override
      public void addTouchables(ArrayList<View> views) {
          // Note that we don't call super.addTouchables(), which means that
          // we don't call View.addTouchables().  This is okay because a ViewPager
          // is itself not touchable.
          for (int i = 0; i < getChildCount(); i++) {
              final View child = getChildAt(i);
              if (child.getVisibility() == VISIBLE) {
                  ItemInfo ii = infoForChild(child);
                  if (ii != null && ii.position == mCurItem) {
                      child.addTouchables(views);
                  }
              }
          }
      }
docs: We only want the current page that is being shown to be touchable.