change page navigation

lib/pages/payment_methods/payment_method_page.dart

@@ -9,6 +9,7 @@ import 'package:fcs/pages/widgets/bottom_up_page_route.dart';
 import 'package:fcs/pages/widgets/display_text.dart';
 import 'package:fcs/pages/widgets/local_text.dart';
 import 'package:fcs/pages/widgets/progress.dart';
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_icons/flutter_icons.dart';
@@ -35,7 +36,7 @@ class _PaymentMethodPageState extends State<PaymentMethodPage> {
         appBar: AppBar(
           leading: new IconButton(
             icon: new Icon(
-              Icons.close,
+              CupertinoIcons.back,
               color: primaryColor,
             ),
             onPressed: () => Navigator.of(context).pop(),
@@ -69,7 +70,8 @@ class _PaymentMethodPageState extends State<PaymentMethodPage> {
                 onPressed: () {
                   Navigator.push(
                     context,
-                    BottomUpPageRoute(PaymentMethodEditor()),
+                    CupertinoPageRoute(
+                        builder: (context) => PaymentMethodEditor()),
                   );
                 },
                 icon: Icon(Icons.add),
@@ -95,9 +97,10 @@ class _PaymentMethodPageState extends State<PaymentMethodPage> {
           ? () {
               Navigator.push(
                 context,
-                BottomUpPageRoute(PaymentMethodEditor(
-                  paymentMethod: method,
-                )),
+                CupertinoPageRoute(
+                    builder: (context) => PaymentMethodEditor(
+                          paymentMethod: method,
+                        )),
               );
             }
           : null,