Fix analyzer

packages/android_intent/test/android_intent_test.dart

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// @dart = 2.9
+
 import 'package:android_intent/flag.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
@@ -11,7 +13,8 @@ import 'package:platform/platform.dart';
 
 void main() {
   AndroidIntent androidIntent;
-  late MockMethodChannel mockChannel;
+  MockMethodChannel mockChannel;
+
   setUp(() {
     mockChannel = MockMethodChannel();
     when(mockChannel.invokeMethod<bool>('canResolveActivity', any))

packages/flutter_plugin_android_lifecycle/example/integration_test/flutter_plugin_android_lifecycle_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 'package:flutter_test/flutter_test.dart';
 import 'package:integration_test/integration_test.dart';
 import 'package:flutter_plugin_android_lifecycle_example/main.dart';

packages/flutter_plugin_android_lifecycle/example/lib/main.dart

@@ -1,3 +1,7 @@
+// Copyright 2019, the Chromium project authors.  Please see the AUTHORS file
+// 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.
+
 // ignore_for_file: public_member_api_docs
 
 import 'package:flutter/material.dart';

packages/flutter_plugin_android_lifecycle/example/pubspec.yaml

@@ -1,23 +1,21 @@
 name: flutter_plugin_android_lifecycle_example
 description: Demonstrates how to use the flutter_plugin_android_lifecycle plugin.
-publish_to: 'none'
-
-environment:
-  sdk: ">=2.12.0-0 <3.0.0"
 
 dependencies:
   flutter:
     sdk: flutter
-  integration_test:
-    path: ../../integration_test
+  flutter_plugin_android_lifecycle:
+    path: ../
 
 dev_dependencies:
+  integration_test:
+    path: ../../integration_test
   flutter_test:
     sdk: flutter
   pedantic: ^1.8.0
 
-  flutter_plugin_android_lifecycle:
-    path: ../
+environment:
+  sdk: ">=2.12.0-0 <3.0.0"
 
 flutter:
   uses-material-design: true

packages/ios_platform_images/example/test/widget_test.dart

@@ -8,7 +8,7 @@ import 'package:ios_platform_images_example/main.dart';
 void main() {
   testWidgets('Verify loads image', (WidgetTester tester) async {
     // Build our app and trigger a frame.
-    await tester.pumpWidget(MyApp());
+    await ;
 
     // Verify that platform version is retrieved.
     expect(

packages/local_auth/example/lib/main.dart

@@ -21,16 +21,17 @@ class MyApp extends StatefulWidget {
 
 class _MyAppState extends State<MyApp> {
   final LocalAuthentication auth = LocalAuthentication();
-  bool _canCheckBiometrics;
-  List<BiometricType> _availableBiometrics;
+  late bool _canCheckBiometrics;
+  late List<BiometricType> _availableBiometrics;
   String _authorized = 'Not Authorized';
   bool _isAuthenticating = false;
 
   Future<void> _checkBiometrics() async {
-    bool canCheckBiometrics;
+    late bool canCheckBiometrics;
     try {
       canCheckBiometrics = await auth.canCheckBiometrics;
     } on PlatformException catch (e) {
+      canCheckBiometrics = false;
       print(e);
     }
     if (!mounted) return;
@@ -41,10 +42,11 @@ class _MyAppState extends State<MyApp> {
   }
 
   Future<void> _getAvailableBiometrics() async {
-    List<BiometricType> availableBiometrics;
+    late List<BiometricType> availableBiometrics;
     try {
       availableBiometrics = await auth.getAvailableBiometrics();
     } on PlatformException catch (e) {
+      availableBiometrics = <BiometricType>[];
       print(e);
     }
     if (!mounted) return;

packages/local_auth/example/pubspec.yaml

@@ -18,5 +18,5 @@ 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 <2.0.0"

packages/local_auth/integration_test/local_auth_test.dart

@@ -1,3 +1,9 @@
+// Copyright 2017 The Chromium Authors. 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 'package:flutter_test/flutter_test.dart';
 import 'package:integration_test/integration_test.dart';
 

packages/share/integration_test/share_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 'package:flutter_test/flutter_test.dart';
 import 'package:share/share.dart';
 import 'package:integration_test/integration_test.dart';

packages/share/pubspec.yaml

@@ -16,11 +16,11 @@ flutter:
 dependencies:
   meta: ^1.3.0-nullsafety.6
   mime: ^1.0.0-nullsafety.0
+  test: ^1.16.0-nullsafety.13
   flutter:
     sdk: flutter
 
 dev_dependencies:
-  test: ^1.16.0-nullsafety.13
   mockito: ^4.1.3
   flutter_test:
     sdk: flutter

packages/share/test/share_test.dart

@@ -2,6 +2,8 @@
 // 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 'dart:ui';
 
@@ -15,7 +17,7 @@ import 'package:flutter/services.dart';
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
 
-  late MockMethodChannel mockChannel;
+  MockMethodChannel mockChannel;
 
   setUp(() {
     mockChannel = MockMethodChannel();

packages/webview_flutter/example/integration_test/webview_flutter_test.dart

@@ -358,12 +358,12 @@ void main() {
       videoTestBase64 = base64Encode(const Utf8Encoder().convert(videoTest));
     });
 
-    test('Auto media playback', () async {
+    testWidgets('Auto media playback', (WidgetTester tester) async {
       Completer<WebViewController> controllerCompleter =
           Completer<WebViewController>();
       Completer<void> pageLoaded = Completer<void>();
 
-      await pumpWidget(
+      await tester.pumpWidget(
         Directionality(
           textDirection: TextDirection.ltr,
           child: WebView(
@@ -390,7 +390,7 @@ void main() {
       pageLoaded = Completer<void>();
 
       // We change the key to re-create a new webview as we change the initialMediaPlaybackPolicy
-      await pumpWidget(
+      await tester.pumpWidget(
         Directionality(
           textDirection: TextDirection.ltr,
           child: WebView(
@@ -416,13 +416,13 @@ void main() {
       expect(isPaused, _webviewBool(true));
     });
 
-    test('Changes to initialMediaPlaybackPolicy are ignored', () async {
+    testWidgets('Changes to initialMediaPlaybackPolicy are ignored', (WidgetTester tester) async {
       final Completer<WebViewController> controllerCompleter =
           Completer<WebViewController>();
       Completer<void> pageLoaded = Completer<void>();
 
       final GlobalKey key = GlobalKey();
-      await pumpWidget(
+      await tester.pumpWidget(
         Directionality(
           textDirection: TextDirection.ltr,
           child: WebView(
@@ -447,7 +447,7 @@ void main() {
 
       pageLoaded = Completer<void>();
 
-      await pumpWidget(
+      await tester.pumpWidget(
         Directionality(
           textDirection: TextDirection.ltr,
           child: WebView(
@@ -474,12 +474,12 @@ void main() {
       expect(isPaused, _webviewBool(false));
     });
 
-    test('Video plays inline when allowsInlineMediaPlayback is true', () async {
+    testWidgets('Video plays inline when allowsInlineMediaPlayback is true', (WidgetTester tester) async {
       Completer<WebViewController> controllerCompleter =
           Completer<WebViewController>();
       Completer<void> pageLoaded = Completer<void>();
 
-      await pumpWidget(
+      await tester.pumpWidget(
         Directionality(
           textDirection: TextDirection.ltr,
           child: WebView(
@@ -507,7 +507,7 @@ void main() {
       controllerCompleter = Completer<WebViewController>();
       pageLoaded = Completer<void>();
 
-      await pumpWidget(
+      await tester.pumpWidget(
         Directionality(
           textDirection: TextDirection.ltr,
           child: WebView(

packages/webview_flutter/example/pubspec.yaml

@@ -2,7 +2,7 @@ name: webview_flutter_example
 description: Demonstrates how to use the webview_flutter plugin.
 
 environment:
-  sdk: ">=2.0.0-dev.68.0 <3.0.0"
+  sdk: ">=2.12.0-0 <3.0.0"
 
 dependencies:
   flutter: