Updated to null safety and minor updates

CHANGELOG.md

@@ -1,3 +1,5 @@
 ## [0.0.1] - TODO: Add release date.
 
 * TODO: Describe initial release.
+
+Updated to null safety!!

example/ios/Flutter/flutter_export_environment.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+# This is a generated file; do not edit or check into version control.
+export "FLUTTER_ROOT=E:\FlutterSDK\flutter"
+export "FLUTTER_APPLICATION_PATH=C:\Users\my pc\Desktop\wa\cs\CustomSwitch\example"
+export "COCOAPODS_PARALLEL_CODE_SIGN=true"
+export "FLUTTER_TARGET=lib\main.dart"
+export "FLUTTER_BUILD_DIR=build"
+export "FLUTTER_BUILD_NAME=1.0.0"
+export "FLUTTER_BUILD_NUMBER=1"
+export "DART_OBFUSCATION=false"
+export "TRACK_WIDGET_CREATION=false"
+export "TREE_SHAKE_ICONS=false"
+export "PACKAGE_CONFIG=.packages"

example/lib/main.dart

@@ -8,22 +8,18 @@ class MyApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       debugShowCheckedModeBanner: false,
-      theme: ThemeData(
-        primarySwatch: Colors.deepOrange
-      ),
+      theme: ThemeData(primarySwatch: Colors.deepOrange),
       home: HomeScreen(),
     );
   }
 }
 
-
 class HomeScreen extends StatefulWidget {
   @override
   _HomeScreenState createState() => _HomeScreenState();
 }
 
 class _HomeScreenState extends State<HomeScreen> {
-
   bool status = false;
 
   @override
@@ -37,20 +33,28 @@ class _HomeScreenState extends State<HomeScreen> {
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[
             CustomSwitch(
-              activeColor: Colors.pinkAccent,
               value: status,
               onChanged: (value) {
                 print("VALUE : $value");
                 setState(() {
                   status = value;
                 });
               },
+              key: null,
+              activeText: 'On',
+              activeTextColor: Colors.white,
+              activeColor: Colors.pinkAccent,
+              inactiveColor: Colors.grey,
+              inactiveText: 'Off',
+              inactiveTextColor: Colors.white,
+            ),
+            SizedBox(
+              height: 12.0,
             ),
-            SizedBox(height: 12.0,),
-            Text('Value : $status', style: TextStyle(
-              color: Colors.black,
-              fontSize: 20.0
-            ),)
+            Text(
+              'Value : $status',
+              style: TextStyle(color: Colors.black, fontSize: 20.0),
+            )
           ],
         ),
       ),

example/pubspec.lock

@@ -7,42 +7,63 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.0"
+    version: "2.8.2"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
+    version: "2.1.0"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.2"
+    version: "1.3.1"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.11"
+    version: "1.15.0"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.2"
+    version: "0.1.3"
   custom_switch:
     dependency: "direct main"
     description:
       path: ".."
       relative: true
     source: path
     version: "0.0.1"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -59,35 +80,21 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.5"
+    version: "0.12.11"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.6"
+    version: "1.7.0"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.2"
-  pedantic:
-    dependency: transitive
-    description:
-      name: pedantic
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.7.0"
-  quiver:
-    dependency: transitive
-    description:
-      name: quiver
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.3"
+    version: "1.8.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -99,55 +106,55 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.5"
+    version: "1.8.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.3"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.5"
+    version: "0.4.3"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.6"
+    version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
+    version: "2.1.1"
 sdks:
-  dart: ">=2.2.2 <3.0.0"
+  dart: ">=2.15.1 <3.0.0"

lib/custom_switch.dart

@@ -6,32 +6,32 @@ class CustomSwitch extends StatefulWidget {
   final bool value;
   final ValueChanged<bool> onChanged;
   final Color activeColor;
-  final Color inactiveColor = Colors.grey;
-  final String activeText = 'On';
-  final String inactiveText = 'Off';
-  final Color activeTextColor = Colors.white70;
-  final Color inactiveTextColor = Colors.white70;
+  final Color inactiveColor;
+  final String activeText;
+  final String inactiveText;
+  final Color activeTextColor;
+  final Color inactiveTextColor;
 
   const CustomSwitch({
-    Key key, 
-    this.value, 
-    this.onChanged, 
-    this.activeColor, 
-    this.inactiveColor, 
-    this.activeText,
-    this.inactiveText,
-    this.activeTextColor,
-    this.inactiveTextColor})
-      : super(key: key);
+    required Key key,
+    required this.value,
+    required this.onChanged,
+    required this.activeColor,
+    required this.inactiveColor,
+    required this.activeText,
+    required this.inactiveText,
+    required this.activeTextColor,
+    required this.inactiveTextColor,
+  }) : super(key: key);
 
   @override
   _CustomSwitchState createState() => _CustomSwitchState();
 }
 
 class _CustomSwitchState extends State<CustomSwitch>
     with SingleTickerProviderStateMixin {
-  Animation _circleAnimation;
-  AnimationController _animationController;
+  late Animation _circleAnimation;
+  late AnimationController _animationController;
 
   @override
   void initState() {