build method

Implementation

@override
Widget build(BuildContext context) {
  return Scaffold(
    appBar: SliderAppBar(
      title: _getPageTitle(),
      showBackButton: false,
      showDarkModeToggle: true,
      showStreak: true,
      showFavoriteIcon: true,
      subtitle: 'FitOffice@DHBW',
      onToggleFavorite: () {
        Navigator.push(
          context,
          MaterialPageRoute(
            builder: (context) => ExerciseFilter(
              heading: AppLocalizations.of(context)!.tFavorites,
              showOnlyFavorites: true,
            ),
          ),
        ).then((_) {
          _loadUserFavorites();
          _categoriesKey.currentState?.refreshData();
        });
      },
    ),
    body: Stack(
      children: [
        /// Displays one of the four main screens based on [selectedIndex].
        IndexedStack(
          index: selectedIndex,
          children: [
            // 0: Progress Screen
            ProgressScreen(),

            // 1: Exercise Library TODO: Add Obx() support to update User Infos directly as Olison in ProfilScreen did.
            LibraryScreen(),

            // 2: Statistics Screen
            StatisticScreen(),

            // 3: Friends
            ProfileScreen(),
          ],
        ),
        /// Conditionally renders the full-screen tutorial overlay.
        if (_isShowingTutorial)
          Positioned(
            top: 0,
            left: 0,
            child: Container(
              key: _fullscreenDummyKey,
              width: 0,
              height: 0,
              decoration: BoxDecoration(
                color: Get.context?.theme.brightness == Brightness.dark
                    ? const Color.fromARGB(204, 0, 0, 0)
                    : const Color(0xFF333333),
              ),
            ),
          ),
      ],
    ),
    /// Bottom navigation bar for switching between tabs.
    bottomNavigationBar: BottomNavigationBar(
      currentIndex: selectedIndex,
      onTap: (index) {
        FocusScope.of(context).unfocus();
        setState(() {
          selectedIndex = index;
        });
      },
      type: BottomNavigationBarType.fixed,
      selectedItemColor: tBottomNavBarSelectedColor,
      unselectedItemColor: tBottomNavBarUnselectedColor,
      items: [
        BottomNavigationBarItem(
          icon: Container(key: _progressTabKey, child: Icon(Icons.route)),
          label: AppLocalizations.of(context)!.tProgress,
        ),
        BottomNavigationBarItem(
          icon: Icon(Icons.book, key: _libraryTabKey),
          label: AppLocalizations.of(context)!.tLibrary,
        ),
        BottomNavigationBarItem(
          icon: Icon(Icons.insert_chart, key: _statisticsTabKey),
          label: AppLocalizations.of(context)!.tStatistics,
        ),
        BottomNavigationBarItem(
          icon: Icon(Icons.person, key: _profileTabKey),
          label: AppLocalizations.of(context)!.tProfile,
        ),
      ],
    ),
  );
}