Merge pull request #1 from Sasikumar3595/main

FLUT-4313-Sample updated with null safety.

Author: jayaleshwari

lib/main.dart

@@ -4,39 +4,33 @@ import 'package:syncfusion_flutter_datepicker/datepicker.dart';
 
 void main() => runApp(ProgrammaticDateSelection());
 
-
 class ProgrammaticDateSelection extends StatefulWidget {
   @override
   DateSelectionState createState() => DateSelectionState();
 }
 
 class DateSelectionState extends State<ProgrammaticDateSelection> {
-  DateRangePickerController _controller;
-
-  @override
-  void initState() {
-    _controller = DateRangePickerController();
-    super.initState();
-  }
+  final DateRangePickerController _controller = DateRangePickerController();
 
   @override
   Widget build(BuildContext context) {
-    return Scaffold(
-      body: Card(
-        margin: const EdgeInsets.fromLTRB(50, 150, 50, 110),
-        child: SfDateRangePicker(
-          view: DateRangePickerView.month,
-          controller: _controller,
-          onViewChanged: viewChanged,
+    return MaterialApp(
+      debugShowCheckedModeBanner: false,
+      home: Scaffold(
+        body: Card(
+          margin: const EdgeInsets.fromLTRB(50, 150, 50, 110),
+          child: SfDateRangePicker(
+            view: DateRangePickerView.month,
+            controller: _controller,
+            onViewChanged: viewChanged,
+          ),
         ),
       ),
-
-      // This trailing comma makes auto-formatting nicer for build methods.
     );
   }
 
   void viewChanged(DateRangePickerViewChangedArgs args) {
-    SchedulerBinding.instance.addPostFrameCallback((Duration duration) {
+    SchedulerBinding.instance!.addPostFrameCallback((Duration duration) {
       _controller.selectedDate = args.visibleDateRange.startDate;
     });
   }

pubspec.lock

@@ -7,56 +7,56 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.5.0-nullsafety.1"
+    version: "2.5.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.1"
+    version: "2.1.0"
   characters:
     dependency: transitive
     description:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.3"
+    version: "1.1.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.1"
+    version: "1.1.0"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.15.0-nullsafety.3"
+    version: "1.15.0"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.3"
+    version: "1.0.2"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -73,35 +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.1"
+    version: "0.12.10"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0-nullsafety.4"
+    version: "1.3.0"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0-nullsafety.1"
-  pedantic:
-    dependency: transitive
-    description:
-      name: pedantic
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.9.2"
+    version: "1.8.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -113,69 +106,69 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0-nullsafety.2"
+    version: "1.8.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.10.0-nullsafety.2"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.1"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.1"
+    version: "1.1.0"
   syncfusion_flutter_core:
     dependency: transitive
     description:
       name: syncfusion_flutter_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "18.3.51"
+    version: "19.1.55"
   syncfusion_flutter_datepicker:
     dependency: "direct main"
     description:
       name: syncfusion_flutter_datepicker
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "18.3.51-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.1"
+    version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.19-nullsafety.2"
+    version: "0.2.19"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0-nullsafety.3"
+    version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.3"
+    version: "2.1.0"
 sdks:
-  dart: ">=2.10.0-110 <=2.11.0-213.1.beta"
+  dart: ">=2.12.0 <3.0.0"

pubspec.yaml

@@ -14,17 +14,17 @@ description: A new Flutter application.
 version: 1.0.0+1
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
   flutter:
     sdk: flutter
-  syncfusion_flutter_datepicker: 18.3.51-beta
+  syncfusion_flutter_datepicker: ^19.1.55-beta
 
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^0.1.3
+  cupertino_icons: ^1.0.2
 
 dev_dependencies:
   flutter_test: