merge material 3

lib/pages/pickup_search/pickup_serach.dart

@@ -4,6 +4,7 @@ import 'package:fcs/helpers/theme.dart';
 import 'package:fcs/pages/pickup/model/pickup_model.dart';
 import 'package:fcs/pages/pickup/pickup_list_row.dart';
 import 'package:fcs/pages/widgets/barcode_scanner.dart';
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_vector_icons/flutter_vector_icons.dart';
 import 'package:provider/provider.dart';
@@ -29,13 +30,15 @@ class PackageSearchDelegate extends SearchDelegate<Pickup> {
     final ThemeData theme = Theme.of(context);
     return theme.copyWith(
       appBarTheme: AppBarTheme(color: primaryColor),
+      iconButtonTheme: IconButtonThemeData(
+          style: ButtonStyle(
+              iconColor: MaterialStateProperty.all<Color>(Colors.white))),
       inputDecorationTheme: InputDecorationTheme(
           border: InputBorder.none,
-          hintStyle: TextStyle(
-              color: theme.primaryTextTheme.caption?.color, fontSize: 14)),
+          hintStyle: TextStyle(color: Colors.grey, fontSize: 14)),
       textTheme: TextTheme(
-          headline1: TextStyle(
-              color: theme.primaryTextTheme.headline1?.color,
+          displayLarge: TextStyle(
+              color: theme.primaryTextTheme.displayLarge?.color,
               fontSize: 16,
               backgroundColor: primaryColor)),
       primaryColor: primaryColor,
@@ -60,7 +63,7 @@ class PackageSearchDelegate extends SearchDelegate<Pickup> {
   @override
   Widget buildLeading(BuildContext context) {
     return IconButton(
-      icon: Icon(Icons.arrow_back),
+      icon: Icon(CupertinoIcons.back),
       onPressed: () => close(context, new Pickup()),
     );
   }
@@ -120,7 +123,8 @@ class PackageSearchDelegate extends SearchDelegate<Pickup> {
       child: Center(
         child: Opacity(
             opacity: 0.2,
-            child: Icon(SimpleLineIcons.direction, size: 200, color: primaryColor)),
+            child: Icon(SimpleLineIcons.direction,
+                size: 200, color: primaryColor)),
       ),
     );
   }