code: public T increaseHitRect(final int top, final int left, final int bottom, final int right) {
          final View parent = (View) view.getParent();
          if (parent != null && view.getContext() != null) {
              parent.post(new Runnable() {
                  // Post in the parent's message queue to make sure the parent
                  // lays out its children before we call getHitRect()
                  public void run() {
                      final Rect r = new Rect();
                      view.getHitRect(r);
                      r.top -= dip2pixel(top);
                      r.left -= dip2pixel(left);
                      r.bottom += dip2pixel(bottom);
                      r.right += dip2pixel(right);
                      parent.setTouchDelegate(new TouchDelegate(r, view));
                  }
              });
          }
          return self();
      }
docs: Increases the hit rect of a view. This should be used when an icon is small and cannot be easily tapped on.
  Source: http://stackoverflow.com/a/1343796/5210
  
  @param top    The amount of dp's to be added to the top for hit purposes.
  @param left   The amount of dp's to be added to the left for hit purposes.
  @param bottom The amount of dp's to be added to the bottom for hit purposes.
  @param right  The amount of dp's to be added to the right for hit purposes.