Set Dark Theme

Hi Dark theme dont work!
this is my code but its still white!

      with(this, Navigation.THEME_DARK)
              .startingPosition(0)

            .addAllHelpItem(mHelpLiveo.getHelp())

            .footerItem(R.string.Archive, R.mipmap.ic_settings_black_24dp)
            .setOnClickUser(onClickPhoto)

            .setOnPrepareOptionsMenu(onPrepare)
            .setOnClickFooter(onClickFooter)
            .build();

anyone succeded in setting dark theme?