diff --git a/packages/path_provider/path_provider/example/integration_test/path_provider_test.dart b/packages/path_provider/path_provider/example/integration_test/path_provider_test.dart
index 8eb8520b5b4b..2b12c82f959b 100644
--- a/packages/path_provider/path_provider/example/integration_test/path_provider_test.dart
+++ b/packages/path_provider/path_provider/example/integration_test/path_provider_test.dart
@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// @dart=2.9
+
 import 'dart:async';
 
 import 'dart:io';
diff --git a/packages/path_provider/path_provider/example/lib/main.dart b/packages/path_provider/path_provider/example/lib/main.dart
index 8e929a6882fe..ddc1f8a6e2d5 100644
--- a/packages/path_provider/path_provider/example/lib/main.dart
+++ b/packages/path_provider/path_provider/example/lib/main.dart
@@ -28,7 +28,7 @@ class MyApp extends StatelessWidget {
 }
 
 class MyHomePage extends StatefulWidget {
-  MyHomePage({Key key, this.title}) : super(key: key);
+  MyHomePage({Key? key, required this.title}) : super(key: key);
   final String title;
 
   @override
@@ -36,13 +36,13 @@ class MyHomePage extends StatefulWidget {
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  Future<Directory> _tempDirectory;
-  Future<Directory> _appSupportDirectory;
-  Future<Directory> _appLibraryDirectory;
-  Future<Directory> _appDocumentsDirectory;
-  Future<Directory> _externalDocumentsDirectory;
-  Future<List<Directory>> _externalStorageDirectories;
-  Future<List<Directory>> _externalCacheDirectories;
+  Future<Directory?>? _tempDirectory;
+  Future<Directory?>? _appSupportDirectory;
+  Future<Directory?>? _appLibraryDirectory;
+  Future<Directory?>? _appDocumentsDirectory;
+  Future<Directory?>? _externalDocumentsDirectory;
+  Future<List<Directory>?>? _externalStorageDirectories;
+  Future<List<Directory>?>? _externalCacheDirectories;
 
   void _requestTempDirectory() {
     setState(() {
@@ -51,13 +51,13 @@ class _MyHomePageState extends State<MyHomePage> {
   }
 
   Widget _buildDirectory(
-      BuildContext context, AsyncSnapshot<Directory> snapshot) {
+      BuildContext context, AsyncSnapshot<Directory?> snapshot) {
     Text text = const Text('');
     if (snapshot.connectionState == ConnectionState.done) {
       if (snapshot.hasError) {
         text = Text('Error: ${snapshot.error}');
       } else if (snapshot.hasData) {
-        text = Text('path: ${snapshot.data.path}');
+        text = Text('path: ${snapshot.data!.path}');
       } else {
         text = const Text('path unavailable');
       }
@@ -66,14 +66,14 @@ class _MyHomePageState extends State<MyHomePage> {
   }
 
   Widget _buildDirectories(
-      BuildContext context, AsyncSnapshot<List<Directory>> snapshot) {
+      BuildContext context, AsyncSnapshot<List<Directory>?> snapshot) {
     Text text = const Text('');
     if (snapshot.connectionState == ConnectionState.done) {
       if (snapshot.hasError) {
         text = Text('Error: ${snapshot.error}');
       } else if (snapshot.hasData) {
         final String combined =
-            snapshot.data.map((Directory d) => d.path).join(', ');
+            snapshot.data!.map((Directory d) => d.path).join(', ');
         text = Text('paths: $combined');
       } else {
         text = const Text('path unavailable');
@@ -134,7 +134,7 @@ class _MyHomePageState extends State<MyHomePage> {
                 onPressed: _requestTempDirectory,
               ),
             ),
-            FutureBuilder<Directory>(
+            FutureBuilder<Directory?>(
                 future: _tempDirectory, builder: _buildDirectory),
             Padding(
               padding: const EdgeInsets.all(16.0),
@@ -143,7 +143,7 @@ class _MyHomePageState extends State<MyHomePage> {
                 onPressed: _requestAppDocumentsDirectory,
               ),
             ),
-            FutureBuilder<Directory>(
+            FutureBuilder<Directory?>(
                 future: _appDocumentsDirectory, builder: _buildDirectory),
             Padding(
               padding: const EdgeInsets.all(16.0),
@@ -152,7 +152,7 @@ class _MyHomePageState extends State<MyHomePage> {
                 onPressed: _requestAppSupportDirectory,
               ),
             ),
-            FutureBuilder<Directory>(
+            FutureBuilder<Directory?>(
                 future: _appSupportDirectory, builder: _buildDirectory),
             Padding(
               padding: const EdgeInsets.all(16.0),
@@ -161,7 +161,7 @@ class _MyHomePageState extends State<MyHomePage> {
                 onPressed: _requestAppLibraryDirectory,
               ),
             ),
-            FutureBuilder<Directory>(
+            FutureBuilder<Directory?>(
                 future: _appLibraryDirectory, builder: _buildDirectory),
             Padding(
               padding: const EdgeInsets.all(16.0),
@@ -172,7 +172,7 @@ class _MyHomePageState extends State<MyHomePage> {
                     Platform.isIOS ? null : _requestExternalStorageDirectory,
               ),
             ),
-            FutureBuilder<Directory>(
+            FutureBuilder<Directory?>(
                 future: _externalDocumentsDirectory, builder: _buildDirectory),
             Column(children: <Widget>[
               Padding(
@@ -190,7 +190,7 @@ class _MyHomePageState extends State<MyHomePage> {
                 ),
               ),
             ]),
-            FutureBuilder<List<Directory>>(
+            FutureBuilder<List<Directory>?>(
                 future: _externalStorageDirectories,
                 builder: _buildDirectories),
             Column(children: <Widget>[
@@ -204,7 +204,7 @@ class _MyHomePageState extends State<MyHomePage> {
                 ),
               ),
             ]),
-            FutureBuilder<List<Directory>>(
+            FutureBuilder<List<Directory>?>(
                 future: _externalCacheDirectories, builder: _buildDirectories),
           ],
         ),
diff --git a/packages/path_provider/path_provider/example/pubspec.yaml b/packages/path_provider/path_provider/example/pubspec.yaml
index bbb140e8f4bf..cef0449ca01a 100644
--- a/packages/path_provider/path_provider/example/pubspec.yaml
+++ b/packages/path_provider/path_provider/example/pubspec.yaml
@@ -23,5 +23,5 @@ flutter:
   uses-material-design: true
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: ">=2.12.0-0 <3.0.0"
   flutter: ">=1.12.13+hotfix.5"
diff --git a/packages/path_provider/path_provider/example/test_driver/integration_test.dart b/packages/path_provider/path_provider/example/test_driver/integration_test.dart
index 7a2c21338786..ac106b63b339 100644
--- a/packages/path_provider/path_provider/example/test_driver/integration_test.dart
+++ b/packages/path_provider/path_provider/example/test_driver/integration_test.dart
@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// @dart=2.9
+
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
diff --git a/packages/path_provider/path_provider_linux/example/integration_test/path_provider_test.dart b/packages/path_provider/path_provider_linux/example/integration_test/path_provider_test.dart
index febd52172759..d08b3878a4d5 100644
--- a/packages/path_provider/path_provider_linux/example/integration_test/path_provider_test.dart
+++ b/packages/path_provider/path_provider_linux/example/integration_test/path_provider_test.dart
@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// @dart=2.9
+
 import 'dart:io';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:path_provider_linux/path_provider_linux.dart';
diff --git a/packages/path_provider/path_provider_linux/example/lib/main.dart b/packages/path_provider/path_provider_linux/example/lib/main.dart
index 069308233acb..6958ed10cb23 100644
--- a/packages/path_provider/path_provider_linux/example/lib/main.dart
+++ b/packages/path_provider/path_provider_linux/example/lib/main.dart
@@ -4,7 +4,7 @@ import 'dart:async';
 import 'package:flutter/services.dart';
 import 'package:path_provider_linux/path_provider_linux.dart';
 
-void main() async {
+void main() {
   runApp(MyApp());
 }
 
@@ -15,10 +15,10 @@ class MyApp extends StatefulWidget {
 }
 
 class _MyAppState extends State<MyApp> {
-  String _tempDirectory = 'Unknown';
-  String _downloadsDirectory = 'Unknown';
-  String _appSupportDirectory = 'Unknown';
-  String _documentsDirectory = 'Unknown';
+  String? _tempDirectory = 'Unknown';
+  String? _downloadsDirectory = 'Unknown';
+  String? _appSupportDirectory = 'Unknown';
+  String? _documentsDirectory = 'Unknown';
   final PathProviderLinux _provider = PathProviderLinux();
 
   @override
@@ -29,10 +29,10 @@ class _MyAppState extends State<MyApp> {
 
   // Platform messages are asynchronous, so we initialize in an async method.
   Future<void> initDirectories() async {
-    String tempDirectory;
-    String downloadsDirectory;
-    String appSupportDirectory;
-    String documentsDirectory;
+    String? tempDirectory;
+    String? downloadsDirectory;
+    String? appSupportDirectory;
+    String? documentsDirectory;
     // Platform messages may fail, so we use a try/catch PlatformException.
     try {
       tempDirectory = await _provider.getTemporaryPath();
diff --git a/packages/path_provider/path_provider_linux/example/pubspec.yaml b/packages/path_provider/path_provider_linux/example/pubspec.yaml
index a1a9dde163cf..1fd55712ee44 100644
--- a/packages/path_provider/path_provider_linux/example/pubspec.yaml
+++ b/packages/path_provider/path_provider_linux/example/pubspec.yaml
@@ -3,19 +3,13 @@ description: Demonstrates how to use the path_provider_linux plugin.
 publish_to: "none"
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: ">=2.12.0-0 <3.0.0"
+  flutter: ">=1.10.0"
 
 dependencies:
   flutter:
     sdk: flutter
 
-  path_provider_linux: any
-
-  # The following adds the Cupertino Icons font to your application.
-  # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^0.1.3
-
-dependency_overrides:
   path_provider_linux:
     # When depending on this package from a real application you should use:
     #   path_provider_linux: ^x.y.z
@@ -32,39 +26,5 @@ dev_dependencies:
   integration_test:
     path: ../../../integration_test
 
-# For information on the generic Dart part of this file, see the
-# following page: https://dart.dev/tools/pub/pubspec
-
-# The following section is specific to Flutter.
 flutter:
-  # The following line ensures that the Material Icons font is
-  # included with your application, so that you can use the icons in
-  # the material Icons class.
   uses-material-design: true
-  # To add assets to your application, add an assets section, like this:
-  # assets:
-  #   - images/a_dot_burr.jpeg
-  #   - images/a_dot_ham.jpeg
-  # An image asset can refer to one or more resolution-specific "variants", see
-  # https://flutter.dev/assets-and-images/#resolution-aware.
-  # For details regarding adding assets from package dependencies, see
-  # https://flutter.dev/assets-and-images/#from-packages
-  # To add custom fonts to your application, add a fonts section here,
-  # in this "flutter" section. Each entry in this list should have a
-  # "family" key with the font family name, and a "fonts" key with a
-  # list giving the asset and other descriptors for the font. For
-  # example:
-  # fonts:
-  #   - family: Schyler
-  #     fonts:
-  #       - asset: fonts/Schyler-Regular.ttf
-  #       - asset: fonts/Schyler-Italic.ttf
-  #         style: italic
-  #   - family: Trajan Pro
-  #     fonts:
-  #       - asset: fonts/TrajanPro.ttf
-  #       - asset: fonts/TrajanPro_Bold.ttf
-  #         weight: 700
-  #
-  # For details regarding fonts from package dependencies,
-  # see https://flutter.dev/custom-fonts/#from-packages
diff --git a/packages/path_provider/path_provider_linux/example/test/widget_test.dart b/packages/path_provider/path_provider_linux/example/test/widget_test.dart
index 8ebda3b77176..086b6d614e13 100644
--- a/packages/path_provider/path_provider_linux/example/test/widget_test.dart
+++ b/packages/path_provider/path_provider_linux/example/test/widget_test.dart
@@ -30,7 +30,7 @@ void main() {
           find.byWidgetPredicate(
             (Widget widget) =>
                 widget is Text &&
-                widget.data.startsWith('Temp Directory: /tmp'),
+                widget.data!.startsWith('Temp Directory: /tmp'),
           ),
           findsOneWidget,
         );
@@ -48,7 +48,7 @@ void main() {
           find.byWidgetPredicate(
             (Widget widget) =>
                 widget is Text &&
-                widget.data.startsWith('Documents Directory: /'),
+                widget.data!.startsWith('Documents Directory: /'),
           ),
           findsOneWidget,
         );
@@ -66,7 +66,7 @@ void main() {
           find.byWidgetPredicate(
             (Widget widget) =>
                 widget is Text &&
-                widget.data.startsWith('Downloads Directory: /'),
+                widget.data!.startsWith('Downloads Directory: /'),
           ),
           findsOneWidget,
         );
@@ -85,7 +85,7 @@ void main() {
           find.byWidgetPredicate(
             (Widget widget) =>
                 widget is Text &&
-                widget.data.startsWith('Application Support Directory: /'),
+                widget.data!.startsWith('Application Support Directory: /'),
           ),
           findsOneWidget,
         );
diff --git a/packages/path_provider/path_provider_linux/example/test_driver/integration_test.dart b/packages/path_provider/path_provider_linux/example/test_driver/integration_test.dart
index 7a2c21338786..ac106b63b339 100644
--- a/packages/path_provider/path_provider_linux/example/test_driver/integration_test.dart
+++ b/packages/path_provider/path_provider_linux/example/test_driver/integration_test.dart
@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// @dart=2.9
+
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
diff --git a/packages/path_provider/path_provider_macos/example/integration_test/path_provider_test.dart b/packages/path_provider/path_provider_macos/example/integration_test/path_provider_test.dart
index 58a4d1805cb0..1bb079051cfc 100644
--- a/packages/path_provider/path_provider_macos/example/integration_test/path_provider_test.dart
+++ b/packages/path_provider/path_provider_macos/example/integration_test/path_provider_test.dart
@@ -2,42 +2,56 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// @dart=2.9
+
 import 'dart:io';
 import 'package:flutter_test/flutter_test.dart';
-import 'package:path_provider/path_provider.dart';
+import 'package:path_provider_platform_interface/path_provider_platform_interface.dart';
 import 'package:integration_test/integration_test.dart';
 
 void main() {
   IntegrationTestWidgetsFlutterBinding.ensureInitialized();
 
   testWidgets('getTemporaryDirectory', (WidgetTester tester) async {
-    final Directory result = await getTemporaryDirectory();
+    final PathProviderPlatform provider = PathProviderPlatform.instance;
+    final String result = await provider.getTemporaryPath();
     _verifySampleFile(result, 'temporaryDirectory');
   });
 
   testWidgets('getApplicationDocumentsDirectory', (WidgetTester tester) async {
-    final Directory result = await getApplicationDocumentsDirectory();
+    final PathProviderPlatform provider = PathProviderPlatform.instance;
+    final String result = await provider.getApplicationDocumentsPath();
     _verifySampleFile(result, 'applicationDocuments');
   });
 
   testWidgets('getApplicationSupportDirectory', (WidgetTester tester) async {
-    final Directory result = await getApplicationSupportDirectory();
+    final PathProviderPlatform provider = PathProviderPlatform.instance;
+    final String result = await provider.getApplicationSupportPath();
     _verifySampleFile(result, 'applicationSupport');
   });
 
   testWidgets('getLibraryDirectory', (WidgetTester tester) async {
-    if (!Platform.isMacOS) {
-      return;
-    }
-    final Directory result = await getLibraryDirectory();
+    final PathProviderPlatform provider = PathProviderPlatform.instance;
+    final String result = await provider.getLibraryPath();
     _verifySampleFile(result, 'library');
   });
+
+  testWidgets('getDownloadsDirectory', (WidgetTester tester) async {
+    final PathProviderPlatform provider = PathProviderPlatform.instance;
+    final String result = await provider.getDownloadsPath();
+    // _verifySampleFile causes hangs in driver for some reason, so just
+    // validate that a non-empty path was returned.
+    expect(result, isNotEmpty);
+  });
 }
 
-/// Verify a file called [name] in [directory] by recreating it with test
+/// Verify a file called [name] in [directoryPath] by recreating it with test
 /// contents when necessary.
-void _verifySampleFile(Directory directory, String name) {
-  final File file = File('${directory.path}/$name');
+///
+/// If [createDirectory] is true, the directory will be created if missing.
+void _verifySampleFile(String directoryPath, String name) {
+  final Directory directory = Directory(directoryPath);
+  final File file = File('${directory.path}${Platform.pathSeparator}$name');
 
   if (file.existsSync()) {
     file.deleteSync();
diff --git a/packages/path_provider/path_provider_macos/example/lib/main.dart b/packages/path_provider/path_provider_macos/example/lib/main.dart
index 1c1c90b983c3..f19807f1c273 100644
--- a/packages/path_provider/path_provider_macos/example/lib/main.dart
+++ b/packages/path_provider/path_provider_macos/example/lib/main.dart
@@ -5,143 +5,87 @@
 // ignore_for_file: public_member_api_docs
 
 import 'dart:async';
-import 'dart:io' show Directory;
 
 import 'package:flutter/material.dart';
-import 'package:path_provider/path_provider.dart';
+import 'package:path_provider_platform_interface/path_provider_platform_interface.dart';
 
 void main() {
   runApp(MyApp());
 }
 
-class MyApp extends StatelessWidget {
+/// Sample app
+class MyApp extends StatefulWidget {
   @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'Path Provider',
-      theme: ThemeData(
-        primarySwatch: Colors.blue,
-      ),
-      home: MyHomePage(title: 'Path Provider'),
-    );
-  }
+  _MyAppState createState() => _MyAppState();
 }
 
-class MyHomePage extends StatefulWidget {
-  MyHomePage({Key key, this.title}) : super(key: key);
-  final String title;
+class _MyAppState extends State<MyApp> {
+  String? _tempDirectory = 'Unknown';
+  String? _downloadsDirectory = 'Unknown';
+  String? _appSupportDirectory = 'Unknown';
+  String? _documentsDirectory = 'Unknown';
 
   @override
-  _MyHomePageState createState() => _MyHomePageState();
-}
-
-class _MyHomePageState extends State<MyHomePage> {
-  Future<Directory> _tempDirectory;
-  Future<Directory> _appSupportDirectory;
-  Future<Directory> _appDocumentsDirectory;
-  Future<Directory> _appLibraryDirectory;
-  Future<Directory> _downloadsDirectory;
-
-  void _requestTempDirectory() {
-    setState(() {
-      _tempDirectory = getTemporaryDirectory();
-    });
+  void initState() {
+    super.initState();
+    initDirectories();
   }
 
-  Widget _buildDirectory(
-      BuildContext context, AsyncSnapshot<Directory> snapshot) {
-    Text text = const Text('');
-    if (snapshot.connectionState == ConnectionState.done) {
-      if (snapshot.hasError) {
-        text = Text('Error: ${snapshot.error}');
-      } else if (snapshot.hasData) {
-        text = Text('path: ${snapshot.data.path}');
-      } else {
-        text = const Text('path unavailable');
-      }
-    }
-    return Padding(padding: const EdgeInsets.all(16.0), child: text);
-  }
+  // Platform messages are asynchronous, so we initialize in an async method.
+  Future<void> initDirectories() async {
+    String? tempDirectory;
+    String? downloadsDirectory;
+    String? appSupportDirectory;
+    String? documentsDirectory;
+    final PathProviderPlatform provider = PathProviderPlatform.instance;
 
-  void _requestAppDocumentsDirectory() {
-    setState(() {
-      _appDocumentsDirectory = getApplicationDocumentsDirectory();
-    });
-  }
+    try {
+      tempDirectory = await provider.getTemporaryPath();
+    } catch (exception) {
+      tempDirectory = 'Failed to get temp directory: $exception';
+    }
+    try {
+      downloadsDirectory = await provider.getDownloadsPath();
+    } catch (exception) {
+      downloadsDirectory = 'Failed to get downloads directory: $exception';
+    }
 
-  void _requestAppSupportDirectory() {
-    setState(() {
-      _appSupportDirectory = getApplicationSupportDirectory();
-    });
-  }
+    try {
+      documentsDirectory = await provider.getApplicationDocumentsPath();
+    } catch (exception) {
+      documentsDirectory = 'Failed to get documents directory: $exception';
+    }
 
-  void _requestAppLibraryDirectory() {
-    setState(() {
-      _appLibraryDirectory = getLibraryDirectory();
-    });
-  }
+    try {
+      appSupportDirectory = await provider.getApplicationSupportPath();
+    } catch (exception) {
+      appSupportDirectory = 'Failed to get app support directory: $exception';
+    }
 
-  void _requestDownloadsDirectory() {
     setState(() {
-      _downloadsDirectory = getDownloadsDirectory();
+      _tempDirectory = tempDirectory;
+      _downloadsDirectory = downloadsDirectory;
+      _appSupportDirectory = appSupportDirectory;
+      _documentsDirectory = documentsDirectory;
     });
   }
 
   @override
   Widget build(BuildContext context) {
-    return Scaffold(
-      appBar: AppBar(
-        title: Text(widget.title),
-      ),
-      body: Center(
-        child: ListView(
-          children: <Widget>[
-            Padding(
-              padding: const EdgeInsets.all(16.0),
-              child: ElevatedButton(
-                child: const Text('Get Temporary Directory'),
-                onPressed: _requestTempDirectory,
-              ),
-            ),
-            FutureBuilder<Directory>(
-                future: _tempDirectory, builder: _buildDirectory),
-            Padding(
-              padding: const EdgeInsets.all(16.0),
-              child: ElevatedButton(
-                child: const Text('Get Application Documents Directory'),
-                onPressed: _requestAppDocumentsDirectory,
-              ),
-            ),
-            FutureBuilder<Directory>(
-                future: _appDocumentsDirectory, builder: _buildDirectory),
-            Padding(
-              padding: const EdgeInsets.all(16.0),
-              child: ElevatedButton(
-                child: const Text('Get Application Support Directory'),
-                onPressed: _requestAppSupportDirectory,
-              ),
-            ),
-            FutureBuilder<Directory>(
-                future: _appSupportDirectory, builder: _buildDirectory),
-            Padding(
-              padding: const EdgeInsets.all(16.0),
-              child: ElevatedButton(
-                child: const Text('Get Application Library Directory'),
-                onPressed: _requestAppLibraryDirectory,
-              ),
-            ),
-            FutureBuilder<Directory>(
-                future: _appLibraryDirectory, builder: _buildDirectory),
-            Padding(
-              padding: const EdgeInsets.all(16.0),
-              child: ElevatedButton(
-                child: const Text('Get Downlads Directory'),
-                onPressed: _requestDownloadsDirectory,
-              ),
-            ),
-            FutureBuilder<Directory>(
-                future: _downloadsDirectory, builder: _buildDirectory),
-          ],
+    return MaterialApp(
+      home: Scaffold(
+        appBar: AppBar(
+          title: const Text('Path Provider example app'),
+        ),
+        body: Center(
+          child: Column(
+            children: [
+              Text('Temp Directory: $_tempDirectory\n'),
+              Text('Documents Directory: $_documentsDirectory\n'),
+              Text('Downloads Directory: $_downloadsDirectory\n'),
+              Text('Application Support Directory: $_appSupportDirectory\n'),
+            ],
+          ),
         ),
       ),
     );
diff --git a/packages/path_provider/path_provider_macos/example/macos/Runner.xcodeproj/project.pbxproj b/packages/path_provider/path_provider_macos/example/macos/Runner.xcodeproj/project.pbxproj
index 1e39683e1446..51bfc333fa23 100644
--- a/packages/path_provider/path_provider_macos/example/macos/Runner.xcodeproj/project.pbxproj
+++ b/packages/path_provider/path_provider_macos/example/macos/Runner.xcodeproj/project.pbxproj
@@ -27,10 +27,6 @@
 		33CC10F32044A3C60003C045 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 33CC10F22044A3C60003C045 /* Assets.xcassets */; };
 		33CC10F62044A3C60003C045 /* MainMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = 33CC10F42044A3C60003C045 /* MainMenu.xib */; };
 		33CC11132044BFA00003C045 /* MainFlutterWindow.swift in Sources */ = {isa = PBXBuildFile; fileRef = 33CC11122044BFA00003C045 /* MainFlutterWindow.swift */; };
-		33D1A10422148B71006C7A3E /* FlutterMacOS.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 33D1A10322148B71006C7A3E /* FlutterMacOS.framework */; };
-		33D1A10522148B93006C7A3E /* FlutterMacOS.framework in Bundle Framework */ = {isa = PBXBuildFile; fileRef = 33D1A10322148B71006C7A3E /* FlutterMacOS.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
-		D73912F022F37F9E000D13A0 /* App.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D73912EF22F37F9E000D13A0 /* App.framework */; };
-		D73912F222F3801D000D13A0 /* App.framework in Bundle Framework */ = {isa = PBXBuildFile; fileRef = D73912EF22F37F9E000D13A0 /* App.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -50,8 +46,6 @@
 			dstPath = "";
 			dstSubfolderSpec = 10;
 			files = (
-				D73912F222F3801D000D13A0 /* App.framework in Bundle Framework */,
-				33D1A10522148B93006C7A3E /* FlutterMacOS.framework in Bundle Framework */,
 			);
 			name = "Bundle Framework";
 			runOnlyForDeploymentPostprocessing = 0;
@@ -72,14 +66,12 @@
 		33CEB47222A05771004F2AC0 /* Flutter-Debug.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = "Flutter-Debug.xcconfig"; sourceTree = "<group>"; };
 		33CEB47422A05771004F2AC0 /* Flutter-Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = "Flutter-Release.xcconfig"; sourceTree = "<group>"; };
 		33CEB47722A0578A004F2AC0 /* Flutter-Generated.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = "Flutter-Generated.xcconfig"; path = "ephemeral/Flutter-Generated.xcconfig"; sourceTree = "<group>"; };
-		33D1A10322148B71006C7A3E /* FlutterMacOS.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = FlutterMacOS.framework; path = Flutter/ephemeral/FlutterMacOS.framework; sourceTree = SOURCE_ROOT; };
 		33E51913231747F40026EE4D /* DebugProfile.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = DebugProfile.entitlements; sourceTree = "<group>"; };
 		33E51914231749380026EE4D /* Release.entitlements */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.entitlements; path = Release.entitlements; sourceTree = "<group>"; };
 		33E5194F232828860026EE4D /* AppInfo.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = AppInfo.xcconfig; sourceTree = "<group>"; };
 		46139048DB9F59D473B61B5E /* Pods-Runner.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.debug.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"; sourceTree = "<group>"; };
 		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Release.xcconfig; sourceTree = "<group>"; };
 		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; path = Debug.xcconfig; sourceTree = "<group>"; };
-		D73912EF22F37F9E000D13A0 /* App.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = App.framework; path = Flutter/ephemeral/App.framework; sourceTree = SOURCE_ROOT; };
 		F4586DA69948E3A954A2FC9C /* Pods-Runner.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -88,8 +80,6 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				D73912F022F37F9E000D13A0 /* App.framework in Frameworks */,
-				33D1A10422148B71006C7A3E /* FlutterMacOS.framework in Frameworks */,
 				23F6FAA3AF82DFCF2B7DD79A /* Pods_Runner.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -156,8 +146,6 @@
 				33CEB47222A05771004F2AC0 /* Flutter-Debug.xcconfig */,
 				33CEB47422A05771004F2AC0 /* Flutter-Release.xcconfig */,
 				33CEB47722A0578A004F2AC0 /* Flutter-Generated.xcconfig */,
-				D73912EF22F37F9E000D13A0 /* App.framework */,
-				33D1A10322148B71006C7A3E /* FlutterMacOS.framework */,
 			);
 			path = Flutter;
 			sourceTree = "<group>";
@@ -281,7 +269,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "echo \"$PRODUCT_NAME.app\" > \"$PROJECT_DIR\"/Flutter/ephemeral/.app_filename\n";
+			shellScript = "echo \"$PRODUCT_NAME.app\" > \"$PROJECT_DIR\"/Flutter/ephemeral/.app_filename && \"$FLUTTER_ROOT\"/packages/flutter_tools/bin/macos_assemble.sh embed\n";
 		};
 		33CC111E2044C6BF0003C045 /* ShellScript */ = {
 			isa = PBXShellScriptBuildPhase;
@@ -308,10 +296,13 @@
 			buildActionMask = 2147483647;
 			files = (
 			);
-			inputFileListPaths = (
+			inputPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh",
+				"${BUILT_PRODUCTS_DIR}/path_provider_macos/path_provider_macos.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
-			outputFileListPaths = (
+			outputPaths = (
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/path_provider_macos.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
diff --git a/packages/path_provider/path_provider_macos/example/macos/Runner/DebugProfile.entitlements b/packages/path_provider/path_provider_macos/example/macos/Runner/DebugProfile.entitlements
index dddb8a30c851..8139952b3e55 100644
--- a/packages/path_provider/path_provider_macos/example/macos/Runner/DebugProfile.entitlements
+++ b/packages/path_provider/path_provider_macos/example/macos/Runner/DebugProfile.entitlements
@@ -8,5 +8,7 @@
 	<true/>
 	<key>com.apple.security.network.server</key>
 	<true/>
+	<key>com.apple.security.files.downloads.read-write</key>
+	<true/>
 </dict>
 </plist>
diff --git a/packages/path_provider/path_provider_macos/example/macos/Runner/Release.entitlements b/packages/path_provider/path_provider_macos/example/macos/Runner/Release.entitlements
index 852fa1a4728a..2f9659c917fb 100644
--- a/packages/path_provider/path_provider_macos/example/macos/Runner/Release.entitlements
+++ b/packages/path_provider/path_provider_macos/example/macos/Runner/Release.entitlements
@@ -4,5 +4,7 @@
 <dict>
 	<key>com.apple.security.app-sandbox</key>
 	<true/>
+	<key>com.apple.security.files.downloads.read-write</key>
+	<true/>
 </dict>
 </plist>
diff --git a/packages/path_provider/path_provider_macos/example/pubspec.yaml b/packages/path_provider/path_provider_macos/example/pubspec.yaml
index cb904fa5ea98..495459319ca4 100644
--- a/packages/path_provider/path_provider_macos/example/pubspec.yaml
+++ b/packages/path_provider/path_provider_macos/example/pubspec.yaml
@@ -4,11 +4,6 @@ description: Demonstrates how to use the path_provider plugin.
 dependencies:
   flutter:
     sdk: flutter
-  path_provider: ^1.6.14
-
-# path_provider_macos is endorsed, so we need to add it to dependency_overrides
-# to depend on it from path:
-dependency_overrides:
   path_provider_macos:
     # When depending on this package from a real application you should use:
     #   path_provider_macos: ^x.y.z
@@ -16,6 +11,7 @@ dependency_overrides:
     # The example app is bundled with the plugin so we use a path dependency on
     # the parent directory to use the current plugin's version.
     path: ../
+  path_provider_platform_interface: 2.0.0-nullsafety
 
 dev_dependencies:
   integration_test:
@@ -28,5 +24,5 @@ flutter:
   uses-material-design: true
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: ">=2.12.0-0 <3.0.0"
   flutter: ">=1.10.0"
diff --git a/packages/path_provider/path_provider_macos/example/test_driver/integration_test.dart b/packages/path_provider/path_provider_macos/example/test_driver/integration_test.dart
index 7a2c21338786..ac106b63b339 100644
--- a/packages/path_provider/path_provider_macos/example/test_driver/integration_test.dart
+++ b/packages/path_provider/path_provider_macos/example/test_driver/integration_test.dart
@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// @dart=2.9
+
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
diff --git a/packages/path_provider/path_provider_windows/example/integration_test/path_provider_test.dart b/packages/path_provider/path_provider_windows/example/integration_test/path_provider_test.dart
index ee9427686026..0953fc100950 100644
--- a/packages/path_provider/path_provider_windows/example/integration_test/path_provider_test.dart
+++ b/packages/path_provider/path_provider_windows/example/integration_test/path_provider_test.dart
@@ -2,13 +2,15 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// @dart=2.9
+
 import 'dart:io';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:path_provider_windows/path_provider_windows.dart';
-import 'package:e2e/e2e.dart';
+import 'package:integration_test/integration_test.dart';
 
 void main() {
-  E2EWidgetsFlutterBinding.ensureInitialized();
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
 
   testWidgets('getTemporaryDirectory', (WidgetTester tester) async {
     final PathProviderWindows provider = PathProviderWindows();
diff --git a/packages/path_provider/path_provider_windows/example/lib/main.dart b/packages/path_provider/path_provider_windows/example/lib/main.dart
index 4fbb1decf2f4..964ef3d04db1 100644
--- a/packages/path_provider/path_provider_windows/example/lib/main.dart
+++ b/packages/path_provider/path_provider_windows/example/lib/main.dart
@@ -9,7 +9,7 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:path_provider_windows/path_provider_windows.dart';
 
-void main() async {
+void main() {
   runApp(MyApp());
 }
 
@@ -20,10 +20,10 @@ class MyApp extends StatefulWidget {
 }
 
 class _MyAppState extends State<MyApp> {
-  String _tempDirectory = 'Unknown';
-  String _downloadsDirectory = 'Unknown';
-  String _appSupportDirectory = 'Unknown';
-  String _documentsDirectory = 'Unknown';
+  String? _tempDirectory = 'Unknown';
+  String? _downloadsDirectory = 'Unknown';
+  String? _appSupportDirectory = 'Unknown';
+  String? _documentsDirectory = 'Unknown';
 
   @override
   void initState() {
@@ -33,10 +33,10 @@ class _MyAppState extends State<MyApp> {
 
   // Platform messages are asynchronous, so we initialize in an async method.
   Future<void> initDirectories() async {
-    String tempDirectory;
-    String downloadsDirectory;
-    String appSupportDirectory;
-    String documentsDirectory;
+    String? tempDirectory;
+    String? downloadsDirectory;
+    String? appSupportDirectory;
+    String? documentsDirectory;
     final PathProviderWindows provider = PathProviderWindows();
 
     try {
diff --git a/packages/path_provider/path_provider_windows/example/pubspec.yaml b/packages/path_provider/path_provider_windows/example/pubspec.yaml
index 7a34d90c0f6c..5704502528f7 100644
--- a/packages/path_provider/path_provider_windows/example/pubspec.yaml
+++ b/packages/path_provider/path_provider_windows/example/pubspec.yaml
@@ -4,9 +4,6 @@ description: Demonstrates how to use the path_provider plugin.
 dependencies:
   flutter:
     sdk: flutter
-  path_provider_windows: any
-
-dependency_overrides:
   path_provider_windows:
     # When depending on this package from a real application you should use:
     #   path_provider_windows: ^x.y.z
@@ -16,7 +13,8 @@ dependency_overrides:
     path: ../
 
 dev_dependencies:
-  e2e: ^0.2.1
+  integration_test:
+    path: ../../../integration_test
   flutter_driver:
     sdk: flutter
   pedantic: ^1.8.0
@@ -25,5 +23,5 @@ flutter:
   uses-material-design: true
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: ">=2.12.0-0 <3.0.0"
   flutter: ">=1.12.13+hotfix.4"
diff --git a/packages/path_provider/path_provider_windows/example/test_driver/integration_test.dart b/packages/path_provider/path_provider_windows/example/test_driver/integration_test.dart
index f3aa9e218d82..ac106b63b339 100644
--- a/packages/path_provider/path_provider_windows/example/test_driver/integration_test.dart
+++ b/packages/path_provider/path_provider_windows/example/test_driver/integration_test.dart
@@ -2,14 +2,18 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// @dart=2.9
+
 import 'dart:async';
+import 'dart:convert';
 import 'dart:io';
 import 'package:flutter_driver/flutter_driver.dart';
 
 Future<void> main() async {
   final FlutterDriver driver = await FlutterDriver.connect();
-  final String result =
+  final String data =
       await driver.requestData(null, timeout: const Duration(minutes: 1));
   await driver.close();
-  exit(result == 'pass' ? 0 : 1);
+  final Map<String, dynamic> result = jsonDecode(data);
+  exit(result['result'] == 'true' ? 0 : 1);
 }
diff --git a/packages/path_provider/path_provider_windows/pubspec.yaml b/packages/path_provider/path_provider_windows/pubspec.yaml
index 384eae94f5e5..eb7d1087d5f5 100644
--- a/packages/path_provider/path_provider_windows/pubspec.yaml
+++ b/packages/path_provider/path_provider_windows/pubspec.yaml
@@ -25,5 +25,5 @@ dev_dependencies:
   pedantic: ^1.10.0-nullsafety.3
 
 environment:
-  sdk: '>=2.12.0-259.8.beta <3.0.0'
+  sdk: ">=2.12.0-0 <3.0.0"
   flutter: ">=1.12.13+hotfix.4"