Using Slivers

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: CustomScrollView(
          slivers: [
            // SliverAppBar
             SliverAppBar(
            expandedHeight: 200.0,
            pinned: true,
            flexibleSpace: FlexibleSpaceBar(
              
              background: Image.network(
                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qa9IaXFWC8M+HDUFZzmasaKckxmc4gmByLZVDxLhHyHuY4y5hvH03iPvot/8N8SeSyi4jwHLMa+EkN6kZdevracZ4IyqzTxgHKf+5xkudzCUlTphj+RUqa0eXcPxQYcrjlB5zY81ocJispBWc41hTQeWahtiTcSb+SjwGNB8H0uGg2O5AST4nTKKnZucbxXM0TEgR/ysy/FtY5z4DnD6ARLQ7+ojeNhzI5LsPSfU+kHqouNcNfSDXuHhf9JkXsDI3jVTOTaseDHCLq9gGJxT6jsz3ucepJUxaG0i/N4i8NAGobBJJ7nKB2KBbcp1RhImbAgR1IcZ16clzp+ztktJLQx9QnUz3TGBs+IPI5MAJ9ylI6qz4W+kwh5zl3OGBg6AkEk9RCkt6RX4ljD9FOp3eL+xVRVw5GzvQrV4rjFJ0wSD/bH3VbVxbCLuk7qG7BGfyTz90hYjWFoLjOp3QtV4lIoOdWO7gOyYa4BEHvuhAwcinMpnZqYh9WqC4kHlp7otmNAaB4pAiwQrKTuQRDcM88h5IsCfBUDVc6CG+GBmOXXpqfRFu4E8NLpY4DYOv6OAUGHwD9nkTa3+FZUOBuOr3e8eciFWmqonryM4U8tcABMmI72V7wqi+jUdnblLgCBYgiXXkE2sqjhVMse1rxBaRNwd+YsRdWtTGtzgk7ARy8JP3KcdbJlvSI/jlzfksexjQ57yxzhqZAcA7cmx91gXv/1DewMA9GjKPst/8R0xUwmbMJpVGvjmCMkermnyWP4Zwn5r4c/Izd+UvjpATl3omPWxrWxuiMFhXvsBAO5MCNzfXy5re/D/AMN4FkZntrv2znKB/wCNO0+crWMfRYA0MptGjRDRpcADfyW8V5OfI5dRR5M/BmXNJa0EFkk/SIAI6Oy5rHdytPg/gZ/ipI+imXRGmbwszO/mJGY9IC9IPypuxhi4hjbH0sjKb2bZRNzaB/cYunKvCMnKdU3/AEVYwjmXbJdYyBoZRLvmudceHSSCLc7+qLq1Gtm9xvsB+FRYji2bR+RpuHRLj1a3QDyPknejJYXOVsKxPB2Oc1znDw6jn07Jj+G5qbBlaCMxMX1Nh6fdU1TE4cyS2pUPN7v02QpLD9NHL1a9zT6hwU/U4m0vjuSq/wCgzG8OdTa57doiNRO6seB4rEuL82ZzIAaXNANtSHAZndzO91UU+KupiS6plGoflqt//Q9VoeF/EdF9yRMQS2SJ2zNPiaqeZSVUYr4jg7ewSt8J0Xuc+oHPz3ILiOd5bB35rnfB2EgeA+ECJe+RGknNqtNTDS0Oa4EHcXHqUPXqBoJ0j9I9bhSpGjTdFU7h2HpCSIaIdE2mIFtTbbrzVFxTDtxJzVM9NjQ4MBA0MDMG/UTAEckVjMYS4kXO3TtOipa2MOfIbTfpz09VEp2dGLEo/wAlXxXgTGDNSe58SSHCDGwawAuPUmNEOzCn5D+ZczlHbnbMJjmrx9Q6bdreYNvZZfG1qjHOZPgglpAEXI3G+v3UxcVdmmRSdJewWvVyQGtadCTAdcag+c2VjT4w90NFNumxEAeqFqYrNTAc9oDBDKYje501QVKtlJIP8p9e/OUf49Mtfd2h5xQcDnY586GAI9EBXpDXIQDpI/wim4kZenKPeUyribMvsobTNEqAHMH7lMcwI51aS0eqgqPue6ikMsX4JzWueBmaIk9DvG0H7qBuitMPiiAWkSDY9j9x3UuMpfNdFO7nRmBEAHeOg/fJacVJaMeUovfXsrsM3No9ojYug+VkfSps3qjyzO+1lT1mvY8syHNMAQZ6WCjq4l7DFp6beqni12jTkn0zW0qlIRNR52GUEx0E2CndWpGQA8zu7KB53lYpuKqH+Y+w+wUoxrzuPcp8vwLj+S6pObTdA1me/Ijoml5c8XgAalBYKk55vEdR+miuKeGaNh904wbBugnDVGva5hIcHCCJuI0I56DzUlGm2k2Mo8xc9kDiKDSLj/Hbkg6ofo15j+l92+qpwaJ0W1MEvaMxv4nREAcmhFvwrDv6t/RZuhxQscfmMuTrJ9tirOhxakdHwdg63uLe6gdFozOLMrHoA9w9pRlPi2IYIkO7gE/+pVM+u3I51i4wAdbn6YtoJJ81JSMAC9hzn11VW49MlxT7LWtx2o9mTIZOuUGCOXi09UK2k513mOgM+pOvonU6oi59T+AnMeTpP9rSfsEnJvsFFLorsfxFtJwa5s2kEuMfZFcNxDarMwAFyOYt6ITjuGAAe8lhiG5m6+TrqLhXFMM0FrqmQzfMHkTpbI2I7wj8D8WW9fAh7SCYncBVfD2EVC3O1xbmAGjiLSQRpBgKB/xVSEgMe70bI9yEEzjHjL6WGDS7VznOcedh4Wi/RGgVm3wHEn0z4SROrTofxKIq8Tc9zm3Fp8tlh2uxb9G5R5foVLhuC1rl1QidYc4kqk5eiHGN22aPEYhjPre1vcgKmxfFcMHZi7M4aZZ2J3FlY8P+HcM5jw+X1J8Ml0xGrQDfeSkw2AosIhoBH/aPeZScX5GpLwZrGcR+YczGuEc9+trLquIq1TkdGU2gDSfyt3UfnEOYwjnEEDpH/CmwuCDf/jDR1LWkDu5sEK1ivpieT8GFfwmuWfLDKZn+fJD/APcB7omv8LHJnqPIfGjdByAV1X4+C1xY1hcJAl5gkW2bcIapxUPAL4HY2npNzfkibVewgn/BmsT8LlrS5r3Oj+UNBPu4BA8R4W2mwH5kuG0QOwMnMeyuOMcTc45WPa1m5My472jRZ+o9hdL6hcY1iPITPsuejdAQB5Jpa5EOxDBo0n/yP4ChfWJNgB2CBlzFuSMwAP1Bxn9781mmY140J+/3RFPiLxqwHt4VUZU7JlHkqNR/GZgQZiDmcCZnuHA3FtY0VXX4Wx7M7HQRo0iS4zfxWACCZxCP5SJ1EgqVnFQIs62kiQtPqKXZksTj0B/wzmmHeG+9rjlzRDGMafE4W2ROH4xFhJBvDmtIJ7Tr+iErYdjzMOBgDQAW6SobSNFyvYe3jDGiBJ/fUph4/Ng0X5n9AgW8PGwCmbg43ARzY+KCTxKd/IBN/wCoD+gm/NS4fhub+s9m29TIVhS4cG6tA6ktHrJ/COUmGkCYClUxLsjGADcmT6TN0dxH4d+W+ckchJM9RFvdXnDgGsJ/iKbGg3bmbE8y4RB9Vd8L4myq0NcWPI+h9nNneCtIxTWzGUndo8+xOArGIbYaAuv3shhiKrDBDx3GYeq9afigDBEdOSg/jwNY8rdtSqeFPySssvR5nRxle+Rr7XJDBYcy4iwSVmYmsCC55BiZeTp00Xo9TirI3PQqmxOIpAEtGSJNtPOdApeNLyVzk/BkmfDNV31vMdTty3RlL4Wptu4zGtv1UlTjoe1wYQ2BIJaXE3gxsPNUzuJFxGdznFrhLSBliZkxFz1GhRUUC5PyXVL+EZY2O05T5kAzHkrljWAAta2CJBbEEcwQs3hG1KjHNEHOcz3ECTHMxpyCZT/0ZBeSDdrGzM2kk7Dt7K3GlbI03SezXgmJsB3Cj+aP6m+o/VYbGcTc46u6NAFvMkwi8JgMTWDcjCWmbzaQM3ii5mwGynl6G8aW2zUVcWGua5rw1zTIIIO1wQNQRqEJieN0sxccwJMlrQCATcgOJ94TOGfDFcZXVDTENcckiXOghrOQGhJ8lX1fhJ9mnO95MktgUwOhOv70Slb8BFxT7JsR8XwIYzTd7jPkBYqqxnxbXe0tz+E7Na0A97XUGL+H6lIuzMJjcAloHOf3qgTTjVQ5y6NlGL2hanE6jhEujkPCPRsIdhebDU8hJKURO8dNfJTB8GzSwwRmDnTcXmelrQs7sugSpTIMODgRqCCD6G6kbh7SUXRMMh0GPo6TeB0Osc/NOqkRLj4jtsEUFgeVqURyTXxsoySEDFwrfCpwzugsHXixRRxTevskBMGDl7pKrQWkQhzjOQ/fkE3+LdsPZAC0maTM9lYsf0PsgKFQk+L9+iXFEOIgwI3HXXVN2wLE1ANY8ymHFMG7fIT+FVimOqc2lKKAsHY9nU94A9P8KZnGQ0eFo+/4CCoYcBwzi28RdW7a4mA1oG0NBt6oEwOtxuq8ZbwdtvQynYTGVKbszDlnVp+k/vmjw/lA/tClqMa9oa5+UAEzlvmmLkbQPbqqROhKnxHVP0sAcTqXF3oLKJ3FMS7V47BoH3lPHDG2Lakgi5y9YEX6FMxlFrIDXGTsdf8AGyq2FLwQvxVY6vPt+iheHus55g7T+EU/CuyFzXB0XcBYgc+qEzpDojax7DYB0XBM2UL6LoL83iJm35KLai8LhAT45DTpzPadk+V6J407Kqli3jUZo0B09tUrKNWq6ACSdhYemgHsr2twwZxkPgImTcjojqRDG5WAX1O5PVJy8MaS7RHwrgFKlD6zszr+Bv0+Z3Pb3V7ieNwMrRlEQI2A/wAKjr4nKJcYA16qpr8Yk5WiOpEn/COTSpC+mm7kaGpj3n+a0G5mR5lDu4gcvieO8ys3We513EnuoXGErZSivRp2ceYI8Trb3/ew9FUcQOGeS5uZriZMNMHymyrGPO4TKuI2CVjoZ/FPY6WPIjlYeiY/FZrnVNeZ21TBSPJJsZN84EQQJGh6deqa9wO509/NR/LKbCAHG3/KQFdltKaQgCLKE5rVacN4Z8xrjna2LX9SXchE3RrPhLEOpsqNawtfkygPl3+o8MEtiQAXUy7kKjNZtCkm2l4LlBxSbWn0UEKVrFeVPhTEt1yEEgMIL3BwLabs7S1hhgFVhLnZdTyQfFuEVMOQ2oWBxE5GucTlJe0PJyhsEsNpm4kC8VZAEISDsmgKai0i6LAYnMdGyMDOyHrsvKLAidXIOk9EzOf6T3kT6wjflgwk+UgAZjn83f7v8I84p5YGXm8uzXImYgAflMawBPba+4RYUR4qq4MDfFI0MmwJEgRzTMKXgjMSZ5kn7qXEVtZsm0HSZ2CLAuKNSGO5mPuhK9YPjMBYgjnbaUrKoILZ1HVBuTbFRa4aqYEBogchPdPZUzOlzoDTJO3buqhr4Mym/wARJy7Jcgo0fzyWksGmk/oFWVcbUDjcdoS4TGBjCZvoBz89gh34ouNwJ5iZ99UWFEGKxbnkToNhz3KgNVFtA13KgxDNOspjBH1ymh7jonNpElFYakAb/u4QARgeH59XGeVv1RJ4a1puJjmoRVykEHf2XYrGk79uaVgFEMAjK0eQCEqYMuuyOtwfso6VSQZnb05padXK6f3e359ggKInYCLucPJDPa0KbFYi5UAEiZQBE3eNE8Bo1TvkiSLn2338lN/Dt5JtUJOwIOIDgDYiD1Egx7BG0uL1c2YESdTcE/TrBv8ASz/aOQXLlJoPPGq2XIHFoEN8LntgN0DYdYRaFAXPcAHvcRJIBcSAZMmCdSST5lIuTJJAwDRKRskXIEPabBNK5cgBjXkWTvmFcuQBKNB5JCVy5IZFXbKWkYsuXIQEjXQkN0q5AHAJthsuXIA4uXERuuXIAkovKWs68ch91y5V4ERu6JgXLkAK2uYmB56enPzT2YrwmB4swuQLN5DrK5ckMhDzMyZ5lJnsXHTSBaTtPRcuQAOx5cZKnfVN+gP4C5cgBlPEG3T8o3OuXJslH//Z',
                fit: BoxFit.cover,
              ),
              title:const Text('Sage SliverAppBar'),
              centerTitle: true,
            ),
          ),

            // SliverList
            SliverList(
              delegate: SliverChildBuilderDelegate(
                (BuildContext context, int index) {
                  return ListTile(
                    title: Text('List Item $index'),
                  );
                },
                childCount: 10,
              ),
            ),

            // SliverGrid
            SliverGrid(
              gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
                crossAxisCount: 2,
              ),
              delegate: SliverChildBuilderDelegate(
                (BuildContext context, int index) {
                  return Card(
                    child: Center(
                      child: Text('Grid Item $index'),
                    ),
                  );
                },
                childCount: 6,
              ),
            ),

            // SliverPersistentHeader
            SliverPersistentHeader(
              delegate: MyPersistentHeaderDelegate(),
            ),

            // SliverToBoxAdapter
           const SliverToBoxAdapter(
              child: Padding(
                padding:  EdgeInsets.all(16.0),
                child: Text('SliverToBoxAdapter Example'),
              ),
            ),

            // SliverFillRemaining
           const SliverFillRemaining(
              child: Center(
                child: Text('SliverFillRemaining Example'),
              ),
            ),
          ],
        ),
      ),
    );
  }
}

// Custom SliverPersistentHeader Delegate
class MyPersistentHeaderDelegate extends SliverPersistentHeaderDelegate {
  @override
  Widget build(
      BuildContext context, double shrinkOffset, bool overlapsContent) {
    return Container(
      color: Colors.blue,
      alignment: Alignment.center,
      child: Text(
        'Persistent Header',
        style: TextStyle(color: Colors.white, fontSize: 18),
      ),
    );
  }

  @override
  double get maxExtent => 100.0;

  @override
  double get minExtent => 100.0;

  @override
  bool shouldRebuild(SliverPersistentHeaderDelegate oldDelegate) {
    return false;
  }
}