Platform interface nullsafety migration

permission_handler_platform_interface/CHANGELOG.md

+## 3.0.0-nullsafety
+
+* Migrated to null safety.
+
 ## 2.0.2
 
 * Added support for the limited photos permission available on iOS 14 and up.

permission_handler_platform_interface/lib/src/method_channel/method_channel_permission_handler.dart

@@ -51,8 +51,10 @@ class MethodChannelPermissionHandler extends PermissionHandlerPlatform {
   /// Returns [true] if the app settings page could be opened, otherwise
   /// [false].
   Future<bool> openAppSettings() async {
-    final wasOpened = await _methodChannel.invokeMethod('openAppSettings');
-    return wasOpened;
+    final wasOpened =
+      await _methodChannel.invokeMethod('openAppSettings');
+
+    return wasOpened ?? false;
   }
 
   /// Requests the user for access to the supplied list of [Permission]s, if
@@ -77,6 +79,6 @@ class MethodChannelPermissionHandler extends PermissionHandlerPlatform {
     final shouldShowRationale = await _methodChannel.invokeMethod(
         'shouldShowRequestPermissionRationale', permission.value);
 
-    return shouldShowRationale;
+    return shouldShowRationale ?? false;
   }
 }

permission_handler_platform_interface/pubspec.yaml

@@ -3,20 +3,20 @@ description: A common platform interface for the permission_handler plugin.
 homepage: https://github.com/baseflow/flutter-permission-handler/tree/master/permission_handler_platform_interface
 # NOTE: We strongly prefer non-breaking changes, even at the expense of a
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
-version: 2.0.2
+version: 3.0.0-nullsafety
 
 dependencies:
   flutter:
     sdk: flutter
   meta: ^1.0.5
-  plugin_platform_interface: ^1.0.2
+  plugin_platform_interface: ^1.1.0-nullsafety
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  mockito: ^4.1.1
-  effective_dart: ^1.2.1
+  mockito: ^5.0.0-nullsafety
+  effective_dart: ^1.3.0
 
 environment:
-  sdk: ">=2.6.0 <3.0.0"
+  sdk: ">=2.12.0-0 <3.0.0"
   flutter: ">=1.9.1+hotfix.4 <2.0.0"