Merge "Fix HUN Group Expansion Transparency bug." into main

        updateBackgroundForGroupState();

    }

    /** @return whether a HUN expansion has completed outside the shade, with row transparency. */

    private boolean isHUNGroupExpanded() {

        return mIsHeadsUp

                && isGroupExpanded()

                && !isGroupExpansionChanging();

    }

    /**

     * Updates the parent and children backgrounds in a group based on the expansion state.

     */

    public void updateBackgroundForGroupState() {

        if (mIsSummaryWithChildren) {

            // Only when the group has finished expanding do we hide its background.

            // When the group has finished expanding, we hide its background.

            // Exception: when row transparency is enabled, and a HUN group is expanded,

            // we want to preserve the background at the end of the expansion animation.

            if (notificationRowTransparency() && isHUNGroupExpanded()) {

                mShowNoBackground = false;

            } else {

                mShowNoBackground = !mShowGroupBackgroundWhenExpanded && isGroupExpanded()

                        && !isGroupExpansionChanging() && !isUserLocked();

            }

            mChildrenContainer.updateHeaderForExpansion(mShowNoBackground);

            List<ExpandableNotificationRow> children = mChildrenContainer.getAttachedChildren();

            for (int i = 0; i < children.size(); i++) {