public GenericDraweeHierarchyBuilder setPressedStateOverlay(@Nullable Drawable drawable) {
    if (drawable == null) {
      mPressedStateOverlay = null;
    } else {
      StateListDrawable stateListDrawable = new StateListDrawable();
      stateListDrawable.addState(new int[] {android.R.attr.state_pressed}, drawable);
      mPressedStateOverlay = stateListDrawable;
    }
    return this;
  }
Sets the overlay for pressed state.

@param drawable for pressed state
@return
drawee/src/main/java/com/facebook/drawee/generic/GenericDraweeHierarchyBuilder.java