implemented IconPicker for Car class

lib/screens/iconpicker.dart

@@ -0,0 +1,97 @@
+import 'dart:convert';
+import 'dart:async';
+import 'package:flutter/material.dart';
+
+class IconPicker extends StatefulWidget {
+  IconPicker({super.key});
+
+  late String selectedIcon = 'images/car.png';
+
+  @override
+  State<IconPicker> createState() => _IconPickerState();
+}
+
+class _IconPickerState extends State<IconPicker> {
+  late Future<String> manifestJson;
+  late List<String> icons;
+  late List<String> iconList;
+  late List<String> items;
+
+  TextEditingController editingController = TextEditingController();
+
+  @override
+  void initState() {
+    super.initState();
+    loadAssets();
+  }
+
+  Future<List<String>> loadAssets() async {
+    final manifestJson =
+        await DefaultAssetBundle.of(context).loadString('AssetManifest.json');
+    // ignore: no_leading_underscores_for_local_identifiers
+    final _icons = await json
+        .decode(manifestJson)
+        .keys
+        .where((String key) => key.startsWith('images/car_icons/'))
+        .toList();
+    setState(() {
+      icons = _icons;
+      items = _icons;
+    });
+    return _icons;
+  }
+
+  void runFilter(String query) {
+    List<String> results = [];
+    if (query.isEmpty) {
+      results = icons;
+    } else {
+      results = icons
+          .where((i) => i.substring(17, i.length - 4).contains(query))
+          .toList();
+    }
+    setState(() {
+      items = results;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Dialog(
+        child: Column(children: [
+      Padding(
+        padding: const EdgeInsets.all(8.0),
+        child: TextField(
+          decoration: const InputDecoration(
+            prefixIcon: Icon(Icons.search),
+            hintText: "Search icons",
+          ),
+          onChanged: (value) {
+            // filterSearch(value, iconList);
+            runFilter(value);
+            print('items found: $items');
+          },
+          // controller: editingController,
+        ),
+      ),
+      Expanded(
+          child: ListView.builder(
+        itemCount: items.length,
+        itemBuilder: (context, index) => ListTile(
+          leading: CircleAvatar(
+            // backgroundImage: AssetImage(iconList[index]),
+            backgroundImage: AssetImage(items[index]),
+            backgroundColor: Colors.white,
+          ),
+          title: Text(items[index].substring(17, items[index].length - 4)),
+          // title: Text(items[index]),
+          onTap: () =>
+              Navigator.of(context, rootNavigator: true).pop(items[index]),
+          // onTap: (() => setState(() {
+          // widget.selectedIcon = items[index];
+          // })))),
+        ),
+      )),
+    ]));
+  }
+}