Merge pull request #1 from Sasikumar3595/main

FLUT-4313-Sample updated with null safety.

Author: jayaleshwari

lib/main.dart

@@ -4,22 +4,16 @@ import 'package:flutter/scheduler.dart';
 import 'package:syncfusion_flutter_datepicker/datepicker.dart';
 
 void main() {
-  return runApp(BlackoutDates_Updation());
+  return runApp(BlackoutDatesUpdation());
 }
 
-class BlackoutDates_Updation extends StatefulWidget {
+class BlackoutDatesUpdation extends StatefulWidget {
   @override
   BlackoutDates createState() => BlackoutDates();
 }
 
-class BlackoutDates extends State<BlackoutDates_Updation> {
-  List<DateTime> _blackoutDates;
-
-  @override
-  void initState() {
-    _blackoutDates = <DateTime>[];
-    super.initState();
-  }
+class BlackoutDates extends State<BlackoutDatesUpdation> {
+  List<DateTime> _blackoutDates = <DateTime>[];
 
   @override
   Widget build(BuildContext context) {
@@ -31,10 +25,9 @@ class BlackoutDates extends State<BlackoutDates_Updation> {
               selectionMode: DateRangePickerSelectionMode.single,
               monthViewSettings: DateRangePickerMonthViewSettings(
                   blackoutDates: _blackoutDates),
-              monthCellStyle: DateRangePickerMonthCellStyle(blackoutDateTextStyle:
-                TextStyle(
-                    color: Colors.red,
-                    decoration: TextDecoration.lineThrough),
+              monthCellStyle: DateRangePickerMonthCellStyle(
+                blackoutDateTextStyle: TextStyle(
+                    color: Colors.red, decoration: TextDecoration.lineThrough),
               ),
               onViewChanged: viewChanged,
             )),
@@ -44,16 +37,13 @@ class BlackoutDates extends State<BlackoutDates_Updation> {
 
   void viewChanged(DateRangePickerViewChangedArgs args) {
     List<DateTime> _blackoutDateCollection = <DateTime>[];
-    _blackoutDateCollection.add(args.visibleDateRange.startDate);
-    _blackoutDateCollection
-        .add(args.visibleDateRange.startDate.add(Duration(days: 1)));
-    _blackoutDateCollection
-        .add(args.visibleDateRange.startDate.add(Duration(days: 2)));
-    _blackoutDateCollection
-        .add(args.visibleDateRange.startDate.add(Duration(days: 3)));
-    _blackoutDateCollection
-        .add(args.visibleDateRange.startDate.add(Duration(days: 4)));
-    SchedulerBinding.instance.addPostFrameCallback((timeStamp) {
+    final DateTime visibleStartDate = args.visibleDateRange.startDate!;
+    _blackoutDateCollection.add(visibleStartDate);
+    _blackoutDateCollection.add(visibleStartDate.add(Duration(days: 1)));
+    _blackoutDateCollection.add(visibleStartDate.add(Duration(days: 2)));
+    _blackoutDateCollection.add(visibleStartDate.add(Duration(days: 3)));
+    _blackoutDateCollection.add(visibleStartDate.add(Duration(days: 4)));
+    SchedulerBinding.instance!.addPostFrameCallback((timeStamp) {
       setState(() {
         _blackoutDates = _blackoutDateCollection;
       });

pubspec.lock

@@ -7,42 +7,42 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.5.0-nullsafety.3"
+    version: "2.5.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.3"
+    version: "2.1.0"
   characters:
     dependency: transitive
     description:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.5"
+    version: "1.1.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.3"
+    version: "1.2.0"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.3"
+    version: "1.1.0"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.15.0-nullsafety.5"
+    version: "1.15.0"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -56,7 +56,7 @@ packages:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.3"
+    version: "1.2.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -73,28 +73,28 @@ packages:
       name: intl
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.16.1"
+    version: "0.17.0"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.10-nullsafety.3"
+    version: "0.12.10"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0-nullsafety.6"
+    version: "1.3.0"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0-nullsafety.3"
+    version: "1.8.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -106,69 +106,69 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0-nullsafety.4"
+    version: "1.8.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.10.0-nullsafety.6"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.3"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.3"
+    version: "1.1.0"
   syncfusion_flutter_core:
     dependency: transitive
     description:
       name: syncfusion_flutter_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "18.4.43"
+    version: "19.1.55"
   syncfusion_flutter_datepicker:
     dependency: "direct main"
     description:
       name: syncfusion_flutter_datepicker
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "18.4.43-beta"
+    version: "19.1.55-beta"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.3"
+    version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.19-nullsafety.6"
+    version: "0.2.19"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0-nullsafety.5"
+    version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.5"
+    version: "2.1.0"
 sdks:
-  dart: ">=2.12.0-0.0 <3.0.0"
+  dart: ">=2.12.0 <3.0.0"

pubspec.yaml

@@ -18,19 +18,17 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 version: 1.0.0+1
 
 environment:
-  sdk: ">=2.7.0 <3.0.0"
+  sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
   flutter:
     sdk: flutter
-#  syncfusion_flutter_calendar:
-#    path: E:\jan 20\flutter-calendar\flutter_calendar\syncfusion_flutter_calendar
-  syncfusion_flutter_datepicker: 18.4.43-beta
-  intl: ^0.16.1
+  syncfusion_flutter_datepicker: ^19.1.55-beta
+  intl: ^0.17.0
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^1.0.1
+  cupertino_icons: ^1.0.2
 
 dev_dependencies:
   flutter_test:

test/widget_test.dart

@@ -12,7 +12,7 @@ import 'package:flutter_visibledates_calendar/main.dart';
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
     // Build our app and trigger a frame.
-    await tester.pumpWidget(BlackoutDates_Updation());
+    await tester.pumpWidget(BlackoutDatesUpdation());
 
     // Verify that our counter starts at 0.
     expect(find.text('0'), findsOneWidget);