1-) FLUTTER - BottomSheet navigation drawer menu popup down up aşağıdan yukarıya açılan menü

kaynak : https://pub.dev/packages/solid_bottom_sheet/install

TERMİNALE YAZ -> flutter pub add solid_bottom_sheet VE flutter pub get YAZ

SolidController solidController = new SolidController();

child: Scaffold(

bottomSheet: SolidBottomSheet(
  controller: solidController,
  headerBar: InkWell(
    onTap: () {
      if(solidController.isOpened){
        solidController.hide();
      }else{
        solidController.show();
      }
    },
    child: Container(
      color: Theme.of(context).primaryColor,
      height: 50,
      child: Center(
        child: Text("Takip Edilenler (0)",style: TextStyle(fontSize: 14, fontWeight: FontWeight.bold),),
      ),
    ),
  ),
  body: Container(
    height: 30,
    child: Center(
      child: Text(
        "Hello! I'm a bottom sheet :D",
      ),
    ),
  ),
)

),