From 41b5f8dfafca97227ca6fd9c988d722ebe97b19d Mon Sep 17 00:00:00 2001
From: Amir Panahandeh <amirpanahandeh@yahoo.com>
Date: Mon, 29 Mar 2021 13:54:44 +0430
Subject: [PATCH 1/2] Migrated to null safety

---
 lib/flutter_user_agent.dart | 18 +++++++++---------
 pubspec.yaml                |  2 +-
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/lib/flutter_user_agent.dart b/lib/flutter_user_agent.dart
index 11312ef..edf3164 100644
--- a/lib/flutter_user_agent.dart
+++ b/lib/flutter_user_agent.dart
@@ -5,7 +5,7 @@ import 'package:flutter/services.dart';
 class FlutterUserAgent {
   static const MethodChannel _channel = MethodChannel('flutter_user_agent');
 
-  static Map<String, dynamic> _properties;
+  static Map<String, dynamic>? _properties;
 
   /// Initialize the module.
   ///
@@ -16,7 +16,7 @@ class FlutterUserAgent {
   static Future init({force: false}) async {
     if (_properties == null || force) {
       _properties =
-          Map.unmodifiable(await _channel.invokeMethod('getProperties'));
+          Map.unmodifiable(await (_channel.invokeMethod('getProperties') as FutureOr<Map<dynamic, dynamic>>));
     }
   }
 
@@ -27,28 +27,28 @@ class FlutterUserAgent {
   }
 
   /// Returns the device's user agent.
-  static String get userAgent {
-    return _properties['userAgent'];
+  static String? get userAgent {
+    return _properties?['userAgent'];
   }
 
   /// Returns the device's webview user agent.
-  static String get webViewUserAgent {
-    return _properties['webViewUserAgent'];
+  static String? get webViewUserAgent {
+    return _properties?['webViewUserAgent'];
   }
 
   /// Fetch a [property] that can be used to build your own user agent string.
   static dynamic getProperty(String property) {
-    return _properties[property];
+    return _properties?[property];
   }
 
   /// Fetch a [property] asynchronously that can be used to build your own user agent string.
   static dynamic getPropertyAsync(String property) async {
     await init();
-    return _properties[property];
+    return _properties?[property];
   }
 
   /// Return a map of properties that can be used to generate the user agent string.
-  static Map<String, dynamic> get properties {
+  static Map<String, dynamic>? get properties {
     return _properties;
   }
 }
diff --git a/pubspec.yaml b/pubspec.yaml
index 4617469..9f085d2 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -6,7 +6,7 @@ version: 1.2.2
 homepage: https://github.com/j0j00/flutter_user_agent
 
 environment:
-  sdk: ">=2.0.0-dev.68.0 <3.0.0"
+  sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
   flutter:

From 6e720683520ac787ae83e34f82f769cc5694f0a8 Mon Sep 17 00:00:00 2001
From: Amir Panahandeh <amirpanahandeh@yahoo.com>
Date: Mon, 5 Apr 2021 09:20:58 +0430
Subject: [PATCH 2/2] Fixed issue with type casting caused by dart migrate

---
 lib/flutter_user_agent.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/flutter_user_agent.dart b/lib/flutter_user_agent.dart
index edf3164..da4bf18 100644
--- a/lib/flutter_user_agent.dart
+++ b/lib/flutter_user_agent.dart
@@ -16,7 +16,7 @@ class FlutterUserAgent {
   static Future init({force: false}) async {
     if (_properties == null || force) {
       _properties =
-          Map.unmodifiable(await (_channel.invokeMethod('getProperties') as FutureOr<Map<dynamic, dynamic>>));
+          Map.unmodifiable(await _channel.invokeMethod('getProperties'));
     }
   }