add listView year dropdown

lib/controller/home_controller.dart

@@ -9,6 +9,7 @@ class HomeController extends GetxController {
   final isLoading = false.obs;
   final listTankModel = <TankModel>[].obs;
   final appwriteService = AppwriteService();
+  final currentYear = DateTime.now().year.obs;
 
   @override
   void onInit() {
@@ -22,12 +23,17 @@ class HomeController extends GetxController {
   @override
   void onClose() {}
 
+  void changeYear(int year) {
+    currentYear.value = year;
+    _loadListDocument();
+    update();
+  }
+
   Future<void> _loadListDocument() async {
     isLoading.value = true;
     if (listTankModel.isNotEmpty) {
       listTankModel.clear();
     }
-    var dateYear = DateTime.now().year;
     var userId = await appwriteService.getCurrentUserId();
     if (userId == null) {
       //User nicht eingeloggt, evtl. zur Login-Seite navigieren
@@ -46,7 +52,7 @@ class HomeController extends GetxController {
       if (listTankModel.isNotEmpty) {
         var sortList = listTankModel.where((tank) {
           var year = (DateTime.tryParse(tank.szDate)!).year;
-          return year == dateYear;
+          return year == currentYear.value;
         }).toList();
         listTankModel.clear();
         listTankModel.addAll(sortList);

lib/helper/helper.dart

@@ -8,3 +8,7 @@ import 'package:intl/intl.dart';
 String getCurrentDate(DateTime date) {
   return DateFormat("yyyy-MM-dd").format(date);
 }
+
+var kListDropDownYear = <int>[
+  for (var year = DateTime.now().year; year >= 2020; year--) year
+]; 

lib/pages/home_view.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import '../controller/home_controller.dart';
+import '../widgets/my_drop_down_year_widget.dart';
 import '../widgets/my_styled_loading_indicator.dart';
 
 class HomePage extends GetView<HomeController> {
@@ -15,9 +16,33 @@ class HomePage extends GetView<HomeController> {
       child: SafeArea(
         child: Scaffold(
           appBar: AppBar(
+            toolbarHeight: 100,
             backgroundColor: Colors.blueGrey,
             foregroundColor: Colors.white,
-            title: const Text('Tank List'),
+            title: Column(
+              children: [
+                const Text('Tank List'),
+                Container(
+                  padding: const EdgeInsets.symmetric(horizontal: 18),
+                  decoration: BoxDecoration(
+                    color: Colors.blue.shade700,
+                    borderRadius: BorderRadius.circular(8),
+                    border: Border.all(color: Colors.white, width: 2),
+                    boxShadow: [
+                      BoxShadow(
+                        color: Colors.white.withAlpha(120),
+                        spreadRadius: 1,
+                        blurRadius: 2,
+                        offset: const Offset(0, 3),
+                      ),
+                    ],
+                  ),
+                  width: 150,
+                  height: 50,
+                  child: MyDropDownYear(homCtrl: homCtrl),
+                ),
+              ],
+            ),
             centerTitle: true,
             actions: [
               IconButton(

lib/widgets/my_drop_down_year_widget.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+
+import '../controller/home_controller.dart';
+import '../helper/helper.dart';
+
+class MyDropDownYear extends StatelessWidget {
+  const MyDropDownYear({super.key, required this.homCtrl});
+
+  final HomeController homCtrl;
+
+  @override
+  Widget build(BuildContext context) {
+    return Obx(
+      () => DropdownButton<int>(
+        menuWidth: 150,
+        value: homCtrl.currentYear.value,
+        dropdownColor: Colors.blueGrey,
+        underline: Container(),
+        style: const TextStyle(color: Colors.white, fontSize: 16),
+        items: kListDropDownYear.map((year) {
+          return DropdownMenuItem<int>(
+            value: year,
+            child: Text(year.toString()),
+          );
+        }).toList(),
+        onChanged: (selectedYear) {
+          if (selectedYear != null) {
+            homCtrl.changeYear(selectedYear);
+          }
+        },
+      ),
+    );
+  }
+}