fix the UI issue with address book (#1803)

lib/src/screens/contact/contact_list_page.dart

@@ -1,4 +1,5 @@
 import 'package:cake_wallet/core/auth_service.dart';
+import 'package:cake_wallet/entities/contact.dart';
 import 'package:cake_wallet/entities/contact_base.dart';
 import 'package:cake_wallet/entities/contact_record.dart';
 import 'package:cake_wallet/entities/wallet_list_order_types.dart';
@@ -11,14 +12,12 @@ import 'package:cake_wallet/src/widgets/alert_with_two_actions.dart';
 import 'package:cake_wallet/src/widgets/standard_list.dart';
 import 'package:cake_wallet/themes/extensions/cake_text_theme.dart';
 import 'package:cake_wallet/themes/extensions/exchange_page_theme.dart';
-import 'package:cake_wallet/themes/extensions/filter_theme.dart';
 import 'package:cake_wallet/utils/show_bar.dart';
 import 'package:cake_wallet/utils/show_pop_up.dart';
 import 'package:cake_wallet/view_model/contact_list/contact_list_view_model.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:flutter/widgets.dart';
 import 'package:flutter_slidable/flutter_slidable.dart';
 
 class ContactListPage extends BasePage {
@@ -92,16 +91,19 @@ class ContactPageBody extends StatefulWidget {
 
 class _ContactPageBodyState extends State<ContactPageBody> with SingleTickerProviderStateMixin {
   late TabController _tabController;
+  late ContactListViewModel contactListViewModel;
 
   @override
   void initState() {
     super.initState();
     _tabController = TabController(length: 2, vsync: this);
+    contactListViewModel = widget.contactListViewModel;
   }
 
   @override
   void dispose() {
     _tabController.dispose();
+    contactListViewModel.dispose();
     super.dispose();
   }
 
@@ -306,13 +308,17 @@ class _ContactListBodyState extends State<ContactListBody> {
   @override
   void dispose() {
     widget.tabController.removeListener(_handleTabChange);
-    widget.contactListViewModel.dispose();
+    if (widget.contactListViewModel.settingsStore.contactListOrder == FilterListOrderType.Custom) {
+      widget.contactListViewModel.saveCustomOrder();
+    }
     super.dispose();
   }
 
   @override
   Widget build(BuildContext context) {
-    final contacts = widget.contactListViewModel.contactsToShow;
+    final contacts = widget.contactListViewModel.isEditable
+        ? widget.contactListViewModel.contacts
+        : widget.contactListViewModel.contactsToShow;
     return Scaffold(
       body: Container(
         child: FilteredList(
@@ -351,8 +357,9 @@ class _ContactListBodyState extends State<ContactListBody> {
           },
         ),
       ),
-      floatingActionButton:
-          _isContactsTabActive ? filterButtonWidget(context, widget.contactListViewModel) : null,
+      floatingActionButton: _isContactsTabActive && widget.contactListViewModel.isEditable
+          ? filterButtonWidget(context, widget.contactListViewModel)
+          : null,
     );
   }
 

lib/view_model/contact_list/contact_list_view_model.dart

@@ -136,10 +136,11 @@ abstract class ContactListViewModelBase with Store {
         _currency?.tag == element.type.toString();
   }
 
-  void dispose() async {
-    _subscription?.cancel();
+  void dispose() => _subscription?.cancel();
+
+  void saveCustomOrder() {
     final List<Contact> contactsSourceCopy = contacts.map((e) => e.original).toList();
-    await reorderContacts(contactsSourceCopy);
+    reorderContacts(contactsSourceCopy);
   }
 
   void reorderAccordingToContactList() =>