change page navigation

lib/pages/widgets/delivery_address_selection.dart

@@ -5,6 +5,7 @@ import 'package:fcs/pages/delivery_address/delivery_address_row.dart';
 import 'package:fcs/pages/delivery_address/model/delivery_address_model.dart';
 import 'package:fcs/pages/widgets/bottom_up_page_route.dart';
 import 'package:fcs/pages/widgets/local_text.dart';
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
@@ -22,7 +23,7 @@ class DeliveryAddressSelection extends StatelessWidget {
         appBar: AppBar(
           centerTitle: true,
           leading: new IconButton(
-            icon: new Icon(Icons.close),
+            icon: new Icon(CupertinoIcons.back),
             onPressed: () => Navigator.pop(context),
           ),
           backgroundColor: primaryColor,
@@ -35,8 +36,8 @@ class DeliveryAddressSelection extends StatelessWidget {
         ),
         floatingActionButton: FloatingActionButton.extended(
           onPressed: () {
-            Navigator.of(context)
-                .push(BottomUpPageRoute(DeliveryAddressEditor()));
+            Navigator.of(context).push(CupertinoPageRoute(
+                builder: (context) => DeliveryAddressEditor()));
           },
           icon: Icon(Icons.add),
           label: LocalText(context, "delivery_address.new_address",