From 2ef35518685d23fe6b18737367ca72d1f742d6fd Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Thu, 3 Aug 2023 11:19:48 -0400
Subject: [PATCH 01/11] Adds artifact hub check to gradle command

---
 script/tool/lib/src/gradle_check_command.dart | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index 7520bdf2da0..54d01a0e788 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -120,6 +120,26 @@ class GradleCheckCommand extends PackageLoopingCommand {
     return succeeded;
   }
 
+  /// Validates that [gradleLines] reads and uses a artifiact hub repository
+  /// when ARTIFACT_HUB_REPOSITORY is set.
+  ///
+  /// Required in root gradle file.
+  bool _validateArtifactHubUsage(
+      RepositoryPackage example, List<String> gradleLines) {
+    final String keyVariable = 'artifactRepoKey';
+    final RegExp keyPresentRegex =
+        RegExp("$keyVariable\\s+=\\s+'ARTIFACT_HUB_REPOSITORY'");
+
+    final RegExp keyReadRegex = RegExp('if\\s+(System.getenv().containsKey($keyVariable))');
+    final RegExp keyUsedRegex = RegExp('maven\\s+{\\s+url\\s+System.getenv($keyVariable)\\s+}');
+
+    final bool keyPresent = gradleLines.any((String line) => keyPresentRegex.hasMatch(line));
+    final bool keyRead = gradleLines.any((String line) => keyReadRegex.hasMatch(line));
+    final bool keyUsed = gradleLines.any((String line) => keyUsedRegex.hasMatch(line));
+
+    return keyPresent && keyRead && keyUsed;
+  }
+
   /// Validates the top-level build.gradle for an example app (e.g.,
   /// some_package/example/android/build.gradle).
   bool _validateExampleTopLevelBuildGradle(

From 2519427b5b15616f24e74394d89647412b3fc298 Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Thu, 3 Aug 2023 11:47:31 -0400
Subject: [PATCH 02/11] passing tests

---
 script/tool/lib/src/gradle_check_command.dart | 22 ++++---
 .../tool/test/gradle_check_command_test.dart  | 59 +++++++++++++++----
 2 files changed, 62 insertions(+), 19 deletions(-)

diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index 54d01a0e788..fc1678097d0 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -126,18 +126,23 @@ class GradleCheckCommand extends PackageLoopingCommand {
   /// Required in root gradle file.
   bool _validateArtifactHubUsage(
       RepositoryPackage example, List<String> gradleLines) {
-    final String keyVariable = 'artifactRepoKey';
+    const String keyVariable = 'artifactRepoKey';
     final RegExp keyPresentRegex =
         RegExp("$keyVariable\\s+=\\s+'ARTIFACT_HUB_REPOSITORY'");
 
-    final RegExp keyReadRegex = RegExp('if\\s+(System.getenv().containsKey($keyVariable))');
-    final RegExp keyUsedRegex = RegExp('maven\\s+{\\s+url\\s+System.getenv($keyVariable)\\s+}');
+    final RegExp keyReadRegex =
+        RegExp('if\\s+\(System.getenv\(\).containsKey\($keyVariable\)\)');
+    final RegExp keyUsedRegex =
+        RegExp('maven\\s+{\\s+url\\s+System.getenv($keyVariable)\\s+}');
 
-    final bool keyPresent = gradleLines.any((String line) => keyPresentRegex.hasMatch(line));
-    final bool keyRead = gradleLines.any((String line) => keyReadRegex.hasMatch(line));
-    final bool keyUsed = gradleLines.any((String line) => keyUsedRegex.hasMatch(line));
+    final bool keyPresent =
+        gradleLines.any((String line) => keyPresentRegex.hasMatch(line));
+    // final bool keyRead =
+    //     gradleLines.any((String line) => keyReadRegex.hasMatch(line));
+    // final bool keyUsed =
+    //     gradleLines.any((String line) => keyUsedRegex.hasMatch(line));
 
-    return keyPresent && keyRead && keyUsed;
+    return keyPresent; //&& keyRead && keyUsed;
   }
 
   /// Validates the top-level build.gradle for an example app (e.g.,
@@ -158,6 +163,9 @@ class GradleCheckCommand extends PackageLoopingCommand {
     if (!_validateKotlinVersion(package, lines)) {
       succeeded = false;
     }
+    if (!_validateArtifactHubUsage(package, lines)) {
+      succeeded = false;
+    }
     return succeeded;
   }
 
diff --git a/script/tool/test/gradle_check_command_test.dart b/script/tool/test/gradle_check_command_test.dart
index 28603d25cd1..f6d71866995 100644
--- a/script/tool/test/gradle_check_command_test.dart
+++ b/script/tool/test/gradle_check_command_test.dart
@@ -124,6 +124,7 @@ dependencies {
     required String pluginName,
     required bool warningsConfigured,
     String? kotlinVersion,
+    bool includeArtifactHub = true,
   }) {
     final File buildGradle = package
         .platformDirectory(FlutterPlatform.android)
@@ -138,11 +139,20 @@ gradle.projectsEvaluated {
         }
     }
 }
+''';
+    const String artifactHubSection = '''
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
 ''';
     buildGradle.writeAsStringSync('''
 buildscript {
     ${kotlinVersion == null ? '' : "ext.kotlin_version = '$kotlinVersion'"}
     repositories {
+        ${includeArtifactHub ? artifactHubSection : ''}
         google()
         mavenCentral()
     }
@@ -224,18 +234,20 @@ dependencies {
 ''');
   }
 
-  void writeFakeExampleBuildGradles(
-    RepositoryPackage package, {
-    required String pluginName,
-    bool includeNamespace = true,
-    bool commentNamespace = false,
-    bool warningsConfigured = true,
-    String? kotlinVersion,
-  }) {
-    writeFakeExampleTopLevelBuildGradle(package,
-        pluginName: pluginName,
-        warningsConfigured: warningsConfigured,
-        kotlinVersion: kotlinVersion);
+  void writeFakeExampleBuildGradles(RepositoryPackage package,
+      {required String pluginName,
+      bool includeNamespace = true,
+      bool commentNamespace = false,
+      bool warningsConfigured = true,
+      String? kotlinVersion,
+      bool includeArtifactHub = true}) {
+    writeFakeExampleTopLevelBuildGradle(
+      package,
+      pluginName: pluginName,
+      warningsConfigured: warningsConfigured,
+      kotlinVersion: kotlinVersion,
+      includeArtifactHub: includeArtifactHub,
+    );
     writeFakeExampleAppBuildGradle(package,
         includeNamespace: includeNamespace, commentNamespace: commentNamespace);
   }
@@ -650,6 +662,29 @@ dependencies {
         ));
   });
 
+  group('Artifact Hub check', () {
+    test('passes artifact if not set', () async {
+      const String packageName = 'a_package';
+      final RepositoryPackage package =
+          createFakePackage('a_package', packagesDir);
+      writeFakePluginBuildGradle(package, includeLanguageVersion: true);
+      writeFakeManifest(package);
+      final RepositoryPackage example = package.getExamples().first;
+      writeFakeExampleBuildGradles(example, pluginName: packageName);
+      writeFakeManifest(example, isApp: true);
+
+      final List<String> output =
+          await runCapturingPrint(runner, <String>['gradle-check']);
+
+      expect(
+        output,
+        containsAllInOrder(<Matcher>[
+          contains('Validating android/build.gradle'),
+        ]),
+      );
+    });
+  });
+
   group('Kotlin version check', () {
     test('passes if not set', () async {
       const String packageName = 'a_package';

From 05f76af2754e9141405c75f63c88e1d78a8c33ea Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Thu, 3 Aug 2023 12:45:03 -0400
Subject: [PATCH 03/11] Verify regex against actual packages

---
 script/tool/lib/src/gradle_check_command.dart | 32 +++++++++++++------
 1 file changed, 23 insertions(+), 9 deletions(-)

diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index fc1678097d0..ee591fe13b6 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -129,20 +129,34 @@ class GradleCheckCommand extends PackageLoopingCommand {
     const String keyVariable = 'artifactRepoKey';
     final RegExp keyPresentRegex =
         RegExp("$keyVariable\\s+=\\s+'ARTIFACT_HUB_REPOSITORY'");
-
+    final RegExp documentationPresentRegex =
+        RegExp(r'github.com.*wiki.*Plugins-and-Packages-repository-structure.*gradle-structure');
     final RegExp keyReadRegex =
-        RegExp('if\\s+\(System.getenv\(\).containsKey\($keyVariable\)\)');
+        RegExp('if.*System\.getenv.*containsKey.*$keyVariable');
     final RegExp keyUsedRegex =
-        RegExp('maven\\s+{\\s+url\\s+System.getenv($keyVariable)\\s+}');
+        RegExp('maven.*url.*System\.getenv.*$keyVariable.*');
 
     final bool keyPresent =
         gradleLines.any((String line) => keyPresentRegex.hasMatch(line));
-    // final bool keyRead =
-    //     gradleLines.any((String line) => keyReadRegex.hasMatch(line));
-    // final bool keyUsed =
-    //     gradleLines.any((String line) => keyUsedRegex.hasMatch(line));
-
-    return keyPresent; //&& keyRead && keyUsed;
+    final bool documentationPresent =
+        gradleLines.any((String line) => documentationPresentRegex.hasMatch(line));
+    final bool keyRead =
+        gradleLines.any((String line) => keyReadRegex.hasMatch(line));
+    final bool keyUsed =
+        gradleLines.any((String line) => keyUsedRegex.hasMatch(line));
+    if (!keyPresent) {
+      printError('Does not have ARTIFACT_HUB_REPOSITORY');
+    }
+    if (!documentationPresent) {
+      printError('Does not have ARTIFACT_HUB_REPOSITORY documenation');
+    }
+    if (!keyRead) {
+      printError('Does not read ARTIFACT_HUB_REPOSITORY');
+    }
+    if (!keyUsed) {
+      printError('Does not use ARTIFACT_HUB_REPOSITORY');
+    }
+    return keyPresent && keyRead && keyUsed;
   }
 
   /// Validates the top-level build.gradle for an example app (e.g.,

From d7dd201fa46b20e4681af95f0531e9c009677710 Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Thu, 3 Aug 2023 12:45:45 -0400
Subject: [PATCH 04/11] All camera packages use artifact hub

---
 packages/camera/camera/example/android/build.gradle |  6 ++++++
 .../camera/camera/example/android/settings.gradle   | 13 +++++++++++++
 .../camera_android/example/android/build.gradle     |  6 ++++++
 .../camera_android/example/android/settings.gradle  | 13 +++++++++++++
 4 files changed, 38 insertions(+)

diff --git a/packages/camera/camera/example/android/build.gradle b/packages/camera/camera/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/camera/camera/example/android/build.gradle
+++ b/packages/camera/camera/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/camera/camera/example/android/settings.gradle b/packages/camera/camera/example/android/settings.gradle
index 115da6cb4f4..ba3bd2e672c 100644
--- a/packages/camera/camera/example/android/settings.gradle
+++ b/packages/camera/camera/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
\ No newline at end of file
diff --git a/packages/camera/camera_android/example/android/build.gradle b/packages/camera/camera_android/example/android/build.gradle
index ffbc5edde25..86c8d6ee68e 100644
--- a/packages/camera/camera_android/example/android/build.gradle
+++ b/packages/camera/camera_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/camera/camera_android/example/android/settings.gradle b/packages/camera/camera_android/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/camera/camera_android/example/android/settings.gradle
+++ b/packages/camera/camera_android/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"

From f01bad569390f28c44cf00fa27ef1d5f28121fca Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Thu, 3 Aug 2023 13:22:33 -0400
Subject: [PATCH 05/11] All passing tests

---
 script/tool/lib/src/gradle_check_command.dart | 37 ++++++++++-------
 .../tool/test/gradle_check_command_test.dart  | 41 ++++++++++++++-----
 2 files changed, 53 insertions(+), 25 deletions(-)

diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index ee591fe13b6..46a618deb12 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -120,6 +120,18 @@ class GradleCheckCommand extends PackageLoopingCommand {
     return succeeded;
   }
 
+  /// String printed as example of valid example root build.gradle repository
+  /// configuration that enables artifact hub env variable.
+  @visibleForTesting
+  static const String exampleRootArtifactHubString = r'''
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
+''';
+
   /// Validates that [gradleLines] reads and uses a artifiact hub repository
   /// when ARTIFACT_HUB_REPOSITORY is set.
   ///
@@ -129,8 +141,8 @@ class GradleCheckCommand extends PackageLoopingCommand {
     const String keyVariable = 'artifactRepoKey';
     final RegExp keyPresentRegex =
         RegExp("$keyVariable\\s+=\\s+'ARTIFACT_HUB_REPOSITORY'");
-    final RegExp documentationPresentRegex =
-        RegExp(r'github.com.*wiki.*Plugins-and-Packages-repository-structure.*gradle-structure');
+    final RegExp documentationPresentRegex = RegExp(
+        r'github.com.*wiki.*Plugins-and-Packages-repository-structure.*gradle-structure');
     final RegExp keyReadRegex =
         RegExp('if.*System\.getenv.*containsKey.*$keyVariable');
     final RegExp keyUsedRegex =
@@ -138,25 +150,22 @@ class GradleCheckCommand extends PackageLoopingCommand {
 
     final bool keyPresent =
         gradleLines.any((String line) => keyPresentRegex.hasMatch(line));
-    final bool documentationPresent =
-        gradleLines.any((String line) => documentationPresentRegex.hasMatch(line));
+    final bool documentationPresent = gradleLines
+        .any((String line) => documentationPresentRegex.hasMatch(line));
     final bool keyRead =
         gradleLines.any((String line) => keyReadRegex.hasMatch(line));
     final bool keyUsed =
         gradleLines.any((String line) => keyUsedRegex.hasMatch(line));
-    if (!keyPresent) {
-      printError('Does not have ARTIFACT_HUB_REPOSITORY');
-    }
+
     if (!documentationPresent) {
-      printError('Does not have ARTIFACT_HUB_REPOSITORY documenation');
-    }
-    if (!keyRead) {
-      printError('Does not read ARTIFACT_HUB_REPOSITORY');
+      printError('Does not link artifact hub documentation.');
     }
-    if (!keyUsed) {
-      printError('Does not use ARTIFACT_HUB_REPOSITORY');
+    if (!(keyPresent && keyRead && keyUsed)) {
+      printError('Failed Artifact Hub validation. Include the following in '
+          'example root build.gradle:\n$exampleRootArtifactHubString');
     }
-    return keyPresent && keyRead && keyUsed;
+
+    return keyPresent && documentationPresent && keyRead && keyUsed;
   }
 
   /// Validates the top-level build.gradle for an example app (e.g.,
diff --git a/script/tool/test/gradle_check_command_test.dart b/script/tool/test/gradle_check_command_test.dart
index f6d71866995..e4f9bef19bb 100644
--- a/script/tool/test/gradle_check_command_test.dart
+++ b/script/tool/test/gradle_check_command_test.dart
@@ -139,20 +139,12 @@ gradle.projectsEvaluated {
         }
     }
 }
-''';
-    const String artifactHubSection = '''
-        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
-        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
-        if (System.getenv().containsKey(artifactRepoKey)) {
-            println "Using artifact hub"
-            maven { url System.getenv(artifactRepoKey) }
-        }
 ''';
     buildGradle.writeAsStringSync('''
 buildscript {
     ${kotlinVersion == null ? '' : "ext.kotlin_version = '$kotlinVersion'"}
     repositories {
-        ${includeArtifactHub ? artifactHubSection : ''}
+        ${includeArtifactHub ? GradleCheckCommand.exampleRootArtifactHubString : ''}
         google()
         mavenCentral()
     }
@@ -663,14 +655,15 @@ dependencies {
   });
 
   group('Artifact Hub check', () {
-    test('passes artifact if not set', () async {
+    test('passes artifact hub check when set', () async {
       const String packageName = 'a_package';
       final RepositoryPackage package =
           createFakePackage('a_package', packagesDir);
       writeFakePluginBuildGradle(package, includeLanguageVersion: true);
       writeFakeManifest(package);
       final RepositoryPackage example = package.getExamples().first;
-      writeFakeExampleBuildGradles(example, pluginName: packageName);
+      // ignore: avoid_redundant_argument_values
+      writeFakeExampleBuildGradles(example, pluginName: packageName, includeArtifactHub: true);
       writeFakeManifest(example, isApp: true);
 
       final List<String> output =
@@ -683,6 +676,32 @@ dependencies {
         ]),
       );
     });
+    test('fails artifact hub check when missing', () async {
+      const String packageName = 'a_package';
+      final RepositoryPackage package =
+          createFakePackage('a_package', packagesDir);
+      writeFakePluginBuildGradle(package, includeLanguageVersion: true);
+      writeFakeManifest(package);
+      final RepositoryPackage example = package.getExamples().first;
+      writeFakeExampleBuildGradles(example, pluginName: packageName, includeArtifactHub: false);
+      writeFakeManifest(example, isApp: true);
+
+
+      Error? commandError;
+      final List<String> output = await runCapturingPrint(
+          runner, <String>['gradle-check'], errorHandler: (Error e) {
+        commandError = e;
+      });
+
+      expect(commandError, isA<ToolExit>());
+      expect(
+        output,
+        containsAllInOrder(<Matcher>[
+          contains('Does not link artifact hub documentation.'),
+          contains(GradleCheckCommand.exampleRootArtifactHubString),
+        ]),
+      );
+    });
   });
 
   group('Kotlin version check', () {

From b916ecf2deaa465f06315207094f0018c0917036 Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Thu, 3 Aug 2023 18:21:36 -0400
Subject: [PATCH 06/11] Add validation for settings.gradle but no tests

---
 script/tool/lib/src/gradle_check_command.dart | 80 ++++++++++++++++++-
 .../tool/test/gradle_check_command_test.dart  |  4 +-
 2 files changed, 80 insertions(+), 4 deletions(-)

diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index 46a618deb12..1b25f0e058b 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -66,6 +66,12 @@ class GradleCheckCommand extends PackageLoopingCommand {
       if (!_validateExampleTopLevelBuildGradle(package, topLevelGradleFile)) {
         succeeded = false;
       }
+      final File topLevelSettingsGradleFile =
+          _getSettignsGradleFile(androidDir);
+      if (!_validateExampleTopLevelSettingsGradle(
+          package, topLevelSettingsGradleFile)) {
+        succeeded = false;
+      }
 
       final File appGradleFile =
           _getBuildGradleFile(androidDir.childDirectory('app'));
@@ -82,6 +88,10 @@ class GradleCheckCommand extends PackageLoopingCommand {
   // Returns the gradle file in the given directory.
   File _getBuildGradleFile(Directory dir) => dir.childFile('build.gradle');
 
+  // Returns the settings gradle file in the given directory.
+  File _getSettignsGradleFile(Directory dir) =>
+      dir.childFile('settings.gradle');
+
   // Returns the main/AndroidManifest.xml file for the given package.
   File _getMainAndroidManifest(RepositoryPackage package,
       {required bool isExample}) {
@@ -123,7 +133,7 @@ class GradleCheckCommand extends PackageLoopingCommand {
   /// String printed as example of valid example root build.gradle repository
   /// configuration that enables artifact hub env variable.
   @visibleForTesting
-  static const String exampleRootArtifactHubString = r'''
+  static const String exampleRootGradleArtifactHubString = r'''
         // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
         def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
         if (System.getenv().containsKey(artifactRepoKey)) {
@@ -162,12 +172,78 @@ class GradleCheckCommand extends PackageLoopingCommand {
     }
     if (!(keyPresent && keyRead && keyUsed)) {
       printError('Failed Artifact Hub validation. Include the following in '
-          'example root build.gradle:\n$exampleRootArtifactHubString');
+          'example root build.gradle:\n$exampleRootGradleArtifactHubString');
     }
 
     return keyPresent && documentationPresent && keyRead && keyUsed;
   }
 
+  /// Validates the top-level settings.gradle for an example app (e.g.,
+  /// some_package/example/android/settings.gradle).
+  _validateExampleTopLevelSettingsGradle(
+      RepositoryPackage package, File gradleSettingsFile) {
+    print('${indentation}Validating '
+        '${getRelativePosixPath(gradleSettingsFile, from: package.directory)}.');
+    final String contents = gradleSettingsFile.readAsStringSync();
+    final List<String> lines = contents.split('\n');
+    // This is tracked as a variable rather than a sequence of &&s so that all
+    // failures are reported at once, not just the first one.
+    bool succeeded = true;
+    if (!_validateArtifactHubSettingsUsage(package, lines)) {
+      succeeded = false;
+    }
+    return succeeded;
+  }
+
+  @visibleForTesting
+  static String exampleRootSettingsArtifactHubString = '''
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
+''';
+
+  /// Validates that [gradleLines] reads and uses a artifiact hub repository
+  /// when ARTIFACT_HUB_REPOSITORY is set.
+  ///
+  /// Required in root gradle file.
+  bool _validateArtifactHubSettingsUsage(
+      RepositoryPackage example, List<String> gradleLines) {
+    final RegExp documentationPresentRegex = RegExp(
+        r'github.com.*wiki.*Plugins-and-Packages-repository-structure.*gradle-structure');
+    final RegExp artifactRegistryDefinitionRegex = RegExp(
+        'classpath.*gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin');
+    final RegExp artifactRegistryPluginApplyRegex = RegExp(
+        'apply.*plugin.*com.google.cloud.artifactregistry.gradle-plugin');
+
+    final bool documentationPresent = gradleLines
+        .any((String line) => documentationPresentRegex.hasMatch(line));
+    final bool artifactRegistryDefined = gradleLines
+        .any((String line) => artifactRegistryDefinitionRegex.hasMatch(line));
+    final bool artifactRegistryPluginApplied = gradleLines
+        .any((String line) => artifactRegistryPluginApplyRegex.hasMatch(line));
+
+    if (!documentationPresent) {
+      printError('Does not link artifact hub documentation.');
+    }
+    if (!(artifactRegistryDefined && artifactRegistryPluginApplied)) {
+      printError('Failed Artifact Hub validation. Include the following in '
+          'example root settings.gradle:\n$exampleRootSettingsArtifactHubString');
+    }
+
+    return documentationPresent &&
+        artifactRegistryDefined &&
+        artifactRegistryPluginApplied;
+  }
+
   /// Validates the top-level build.gradle for an example app (e.g.,
   /// some_package/example/android/build.gradle).
   bool _validateExampleTopLevelBuildGradle(
diff --git a/script/tool/test/gradle_check_command_test.dart b/script/tool/test/gradle_check_command_test.dart
index e4f9bef19bb..a60955d885e 100644
--- a/script/tool/test/gradle_check_command_test.dart
+++ b/script/tool/test/gradle_check_command_test.dart
@@ -144,7 +144,7 @@ gradle.projectsEvaluated {
 buildscript {
     ${kotlinVersion == null ? '' : "ext.kotlin_version = '$kotlinVersion'"}
     repositories {
-        ${includeArtifactHub ? GradleCheckCommand.exampleRootArtifactHubString : ''}
+        ${includeArtifactHub ? GradleCheckCommand.exampleRootGradleArtifactHubString : ''}
         google()
         mavenCentral()
     }
@@ -698,7 +698,7 @@ dependencies {
         output,
         containsAllInOrder(<Matcher>[
           contains('Does not link artifact hub documentation.'),
-          contains(GradleCheckCommand.exampleRootArtifactHubString),
+          contains(GradleCheckCommand.exampleRootGradleArtifactHubString),
         ]),
       );
     });

From b7e8bead542ed82ab4df3c593db84cd46c7e11e5 Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Fri, 4 Aug 2023 10:18:24 -0400
Subject: [PATCH 07/11] Add tests for settings.gradle check

---
 script/tool/lib/src/gradle_check_command.dart |   2 +
 .../tool/test/gradle_check_command_test.dart  | 146 ++++++++++++++++--
 2 files changed, 135 insertions(+), 13 deletions(-)

diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index 1b25f0e058b..2be4455890a 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -195,6 +195,8 @@ class GradleCheckCommand extends PackageLoopingCommand {
     return succeeded;
   }
 
+  /// String printed as example of valid example root settings.gradle repository
+  /// configuration that enables artifact hub env variable.
   @visibleForTesting
   static String exampleRootSettingsArtifactHubString = '''
 // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
diff --git a/script/tool/test/gradle_check_command_test.dart b/script/tool/test/gradle_check_command_test.dart
index a60955d885e..49855ee1744 100644
--- a/script/tool/test/gradle_check_command_test.dart
+++ b/script/tool/test/gradle_check_command_test.dart
@@ -177,6 +177,37 @@ ${warningsConfigured ? warningConfig : ''}
 ''');
   }
 
+  /// Writes a fake android/build.gradle file for an example [package] with the
+  /// given options.
+  void writeFakeExampleTopLevelSettingsGradle(
+    RepositoryPackage package, {
+    bool includeArtifactHub = true,
+  }) {
+    final File settingsGradle = package
+        .platformDirectory(FlutterPlatform.android)
+        .childFile('settings.gradle');
+    settingsGradle.createSync(recursive: true);
+
+    settingsGradle.writeAsStringSync('''
+include ':app'
+
+def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
+
+def plugins = new Properties()
+def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
+if (pluginsFile.exists()) {
+    pluginsFile.withInputStream { stream -> plugins.load(stream) }
+}
+
+plugins.each { name, path ->
+    def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
+    include ":\$name"
+    project(":\$name").projectDir = pluginDirectory
+}
+${includeArtifactHub ? GradleCheckCommand.exampleRootSettingsArtifactHubString : ''}
+''');
+  }
+
   /// Writes a fake android/app/build.gradle file for an example [package] with
   /// the given options.
   void writeFakeExampleAppBuildGradle(
@@ -226,22 +257,29 @@ dependencies {
 ''');
   }
 
-  void writeFakeExampleBuildGradles(RepositoryPackage package,
-      {required String pluginName,
-      bool includeNamespace = true,
-      bool commentNamespace = false,
-      bool warningsConfigured = true,
-      String? kotlinVersion,
-      bool includeArtifactHub = true}) {
+  void writeFakeExampleBuildGradles(
+    RepositoryPackage package, {
+    required String pluginName,
+    bool includeNamespace = true,
+    bool commentNamespace = false,
+    bool warningsConfigured = true,
+    String? kotlinVersion,
+    bool includeBuildArtifactHub = true,
+    bool includeSettingsArtifactHub = true,
+  }) {
     writeFakeExampleTopLevelBuildGradle(
       package,
       pluginName: pluginName,
       warningsConfigured: warningsConfigured,
       kotlinVersion: kotlinVersion,
-      includeArtifactHub: includeArtifactHub,
+      includeArtifactHub: includeBuildArtifactHub,
     );
     writeFakeExampleAppBuildGradle(package,
         includeNamespace: includeNamespace, commentNamespace: commentNamespace);
+    writeFakeExampleTopLevelSettingsGradle(
+      package,
+      includeArtifactHub: includeSettingsArtifactHub,
+    );
   }
 
   void writeFakeManifest(
@@ -655,15 +693,21 @@ dependencies {
   });
 
   group('Artifact Hub check', () {
-    test('passes artifact hub check when set', () async {
+    test('passes build.gradle artifact hub check when set', () async {
       const String packageName = 'a_package';
       final RepositoryPackage package =
           createFakePackage('a_package', packagesDir);
       writeFakePluginBuildGradle(package, includeLanguageVersion: true);
       writeFakeManifest(package);
       final RepositoryPackage example = package.getExamples().first;
-      // ignore: avoid_redundant_argument_values
-      writeFakeExampleBuildGradles(example, pluginName: packageName, includeArtifactHub: true);
+      writeFakeExampleBuildGradles(
+        example,
+        pluginName: packageName,
+        // ignore: avoid_redundant_argument_values
+        includeBuildArtifactHub: true,
+        // ignore: avoid_redundant_argument_values
+        includeSettingsArtifactHub: true,
+      );
       writeFakeManifest(example, isApp: true);
 
       final List<String> output =
@@ -673,19 +717,56 @@ dependencies {
         output,
         containsAllInOrder(<Matcher>[
           contains('Validating android/build.gradle'),
+          contains('Validating android/settings.gradle'),
         ]),
       );
     });
-    test('fails artifact hub check when missing', () async {
+    test('fails artifact hub check when build and settings sections missing',
+        () async {
       const String packageName = 'a_package';
       final RepositoryPackage package =
           createFakePackage('a_package', packagesDir);
       writeFakePluginBuildGradle(package, includeLanguageVersion: true);
       writeFakeManifest(package);
       final RepositoryPackage example = package.getExamples().first;
-      writeFakeExampleBuildGradles(example, pluginName: packageName, includeArtifactHub: false);
+      writeFakeExampleBuildGradles(
+        example,
+        pluginName: packageName,
+        includeBuildArtifactHub: false,
+        includeSettingsArtifactHub: false,
+      );
       writeFakeManifest(example, isApp: true);
 
+      Error? commandError;
+      final List<String> output = await runCapturingPrint(
+          runner, <String>['gradle-check'], errorHandler: (Error e) {
+        commandError = e;
+      });
+
+      expect(commandError, isA<ToolExit>());
+      expect(
+        output,
+        containsAllInOrder(<Matcher>[
+          contains('Does not link artifact hub documentation.'),
+          contains(GradleCheckCommand.exampleRootGradleArtifactHubString),
+          contains(GradleCheckCommand.exampleRootSettingsArtifactHubString),
+        ]),
+      );
+    });
+
+    test('fails build.gradle artifact hub check when missing', () async {
+      const String packageName = 'a_package';
+      final RepositoryPackage package =
+          createFakePackage('a_package', packagesDir);
+      writeFakePluginBuildGradle(package, includeLanguageVersion: true);
+      writeFakeManifest(package);
+      final RepositoryPackage example = package.getExamples().first;
+      writeFakeExampleBuildGradles(example,
+          pluginName: packageName,
+          includeBuildArtifactHub: false,
+          // ignore: avoid_redundant_argument_values
+          includeSettingsArtifactHub: true);
+      writeFakeManifest(example, isApp: true);
 
       Error? commandError;
       final List<String> output = await runCapturingPrint(
@@ -701,6 +782,45 @@ dependencies {
           contains(GradleCheckCommand.exampleRootGradleArtifactHubString),
         ]),
       );
+      expect(
+        output,
+        isNot(
+            contains(GradleCheckCommand.exampleRootSettingsArtifactHubString)),
+      );
+    });
+
+    test('fails settings.gradle artifact hub check when missing', () async {
+      const String packageName = 'a_package';
+      final RepositoryPackage package =
+          createFakePackage('a_package', packagesDir);
+      writeFakePluginBuildGradle(package, includeLanguageVersion: true);
+      writeFakeManifest(package);
+      final RepositoryPackage example = package.getExamples().first;
+      writeFakeExampleBuildGradles(example,
+          pluginName: packageName,
+          // ignore: avoid_redundant_argument_values
+          includeBuildArtifactHub: true,
+          includeSettingsArtifactHub: false);
+      writeFakeManifest(example, isApp: true);
+
+      Error? commandError;
+      final List<String> output = await runCapturingPrint(
+          runner, <String>['gradle-check'], errorHandler: (Error e) {
+        commandError = e;
+      });
+
+      expect(commandError, isA<ToolExit>());
+      expect(
+        output,
+        containsAllInOrder(<Matcher>[
+          contains('Does not link artifact hub documentation.'),
+          contains(GradleCheckCommand.exampleRootSettingsArtifactHubString),
+        ]),
+      );
+      expect(
+        output,
+        isNot(contains(GradleCheckCommand.exampleRootGradleArtifactHubString)),
+      );
     });
   });
 

From 5d37c2aec4055ca432f1cf2172c9d267d4d833eb Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Fri, 4 Aug 2023 10:52:52 -0400
Subject: [PATCH 08/11] Update all example build.gradle and settings.gradle
 files

---
 packages/animations/example/android/build.gradle  |  6 ++++++
 .../animations/example/android/settings.gradle    | 13 +++++++++++++
 .../dynamic_layouts/example/android/build.gradle  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 packages/espresso/example/android/build.gradle    |  6 ++++++
 packages/espresso/example/android/settings.gradle | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../file_selector/example/android/build.gradle    |  6 ++++++
 .../file_selector/example/android/settings.gradle | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../flutter_markdown/example/android/build.gradle |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 packages/go_router/example/android/build.gradle   |  6 ++++++
 .../go_router/example/android/settings.gradle     | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../google_sign_in/example/android/build.gradle   |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../image_picker/example/android/build.gradle     |  6 ++++++
 .../image_picker/example/android/settings.gradle  | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../in_app_purchase/example/android/build.gradle  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../local_auth/example/android/build.gradle       |  6 ++++++
 .../local_auth/example/android/settings.gradle    | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../path_provider/example/android/build.gradle    |  6 ++++++
 .../path_provider/example/android/settings.gradle | 15 ++++++++++++++-
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 15 ++++++++++++++-
 packages/pigeon/example/app/android/build.gradle  |  6 ++++++
 .../pigeon/example/app/android/settings.gradle    | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../test_plugin/example/android/build.gradle      |  6 ++++++
 .../test_plugin/example/android/settings.gradle   | 13 +++++++++++++
 .../quick_actions/example/android/build.gradle    |  6 ++++++
 .../quick_actions/example/android/settings.gradle | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 packages/rfw/example/hello/android/build.gradle   |  6 ++++++
 .../rfw/example/hello/android/settings.gradle     | 13 +++++++++++++
 packages/rfw/example/local/android/build.gradle   |  6 ++++++
 .../rfw/example/local/android/settings.gradle     | 13 +++++++++++++
 packages/rfw/example/remote/android/build.gradle  |  6 ++++++
 .../rfw/example/remote/android/settings.gradle    | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../url_launcher/example/android/build.gradle     |  6 ++++++
 .../url_launcher/example/android/settings.gradle  | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../video_player/example/android/build.gradle     |  6 ++++++
 .../video_player/example/android/settings.gradle  | 13 +++++++++++++
 .../example/android/build.gradle                  | 10 ++++++++--
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../webview_flutter/example/android/build.gradle  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 .../example/android/build.gradle                  |  6 ++++++
 .../example/android/settings.gradle               | 13 +++++++++++++
 script/tool/lib/src/gradle_check_command.dart     |  2 +-
 79 files changed, 746 insertions(+), 5 deletions(-)

diff --git a/packages/animations/example/android/build.gradle b/packages/animations/example/android/build.gradle
index ce647a433bd..582d60a2faa 100644
--- a/packages/animations/example/android/build.gradle
+++ b/packages/animations/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/animations/example/android/settings.gradle b/packages/animations/example/android/settings.gradle
index 5a2f14fb18f..8d7543314fa 100644
--- a/packages/animations/example/android/settings.gradle
+++ b/packages/animations/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/dynamic_layouts/example/android/build.gradle b/packages/dynamic_layouts/example/android/build.gradle
index ce647a433bd..582d60a2faa 100644
--- a/packages/dynamic_layouts/example/android/build.gradle
+++ b/packages/dynamic_layouts/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/dynamic_layouts/example/android/settings.gradle b/packages/dynamic_layouts/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/dynamic_layouts/example/android/settings.gradle
+++ b/packages/dynamic_layouts/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/espresso/example/android/build.gradle b/packages/espresso/example/android/build.gradle
index 8940eb77b62..d1a176866bf 100644
--- a/packages/espresso/example/android/build.gradle
+++ b/packages/espresso/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/espresso/example/android/settings.gradle b/packages/espresso/example/android/settings.gradle
index 5a2f14fb18f..8d7543314fa 100644
--- a/packages/espresso/example/android/settings.gradle
+++ b/packages/espresso/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/extension_google_sign_in_as_googleapis_auth/example/android/build.gradle b/packages/extension_google_sign_in_as_googleapis_auth/example/android/build.gradle
index 3843f2b4fe6..bc0712b2a23 100644
--- a/packages/extension_google_sign_in_as_googleapis_auth/example/android/build.gradle
+++ b/packages/extension_google_sign_in_as_googleapis_auth/example/android/build.gradle
@@ -12,6 +12,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/extension_google_sign_in_as_googleapis_auth/example/android/settings.gradle b/packages/extension_google_sign_in_as_googleapis_auth/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/extension_google_sign_in_as_googleapis_auth/example/android/settings.gradle
+++ b/packages/extension_google_sign_in_as_googleapis_auth/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/file_selector/file_selector/example/android/build.gradle b/packages/file_selector/file_selector/example/android/build.gradle
index f7eb7f63ce1..39a10a52cbe 100644
--- a/packages/file_selector/file_selector/example/android/build.gradle
+++ b/packages/file_selector/file_selector/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/file_selector/file_selector/example/android/settings.gradle b/packages/file_selector/file_selector/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/file_selector/file_selector/example/android/settings.gradle
+++ b/packages/file_selector/file_selector/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/file_selector/file_selector_android/example/android/build.gradle b/packages/file_selector/file_selector_android/example/android/build.gradle
index d4d51942c4a..e36f0fd3705 100644
--- a/packages/file_selector/file_selector_android/example/android/build.gradle
+++ b/packages/file_selector/file_selector_android/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/file_selector/file_selector_android/example/android/settings.gradle b/packages/file_selector/file_selector_android/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/file_selector/file_selector_android/example/android/settings.gradle
+++ b/packages/file_selector/file_selector_android/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/flutter_adaptive_scaffold/example/android/build.gradle b/packages/flutter_adaptive_scaffold/example/android/build.gradle
index ce647a433bd..582d60a2faa 100644
--- a/packages/flutter_adaptive_scaffold/example/android/build.gradle
+++ b/packages/flutter_adaptive_scaffold/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/flutter_adaptive_scaffold/example/android/settings.gradle b/packages/flutter_adaptive_scaffold/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/flutter_adaptive_scaffold/example/android/settings.gradle
+++ b/packages/flutter_adaptive_scaffold/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/flutter_markdown/example/android/build.gradle b/packages/flutter_markdown/example/android/build.gradle
index ce647a433bd..582d60a2faa 100644
--- a/packages/flutter_markdown/example/android/build.gradle
+++ b/packages/flutter_markdown/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/flutter_markdown/example/android/settings.gradle b/packages/flutter_markdown/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/flutter_markdown/example/android/settings.gradle
+++ b/packages/flutter_markdown/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/flutter_plugin_android_lifecycle/example/android/build.gradle b/packages/flutter_plugin_android_lifecycle/example/android/build.gradle
index 3d566d3568d..dc5a8d1453e 100644
--- a/packages/flutter_plugin_android_lifecycle/example/android/build.gradle
+++ b/packages/flutter_plugin_android_lifecycle/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/flutter_plugin_android_lifecycle/example/android/settings.gradle b/packages/flutter_plugin_android_lifecycle/example/android/settings.gradle
index 5a2f14fb18f..8d7543314fa 100644
--- a/packages/flutter_plugin_android_lifecycle/example/android/settings.gradle
+++ b/packages/flutter_plugin_android_lifecycle/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/go_router/example/android/build.gradle b/packages/go_router/example/android/build.gradle
index 586557f0afc..228f12cefbc 100644
--- a/packages/go_router/example/android/build.gradle
+++ b/packages/go_router/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/go_router/example/android/settings.gradle b/packages/go_router/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/go_router/example/android/settings.gradle
+++ b/packages/go_router/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/google_maps_flutter/google_maps_flutter/example/android/build.gradle b/packages/google_maps_flutter/google_maps_flutter/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/google_maps_flutter/google_maps_flutter/example/android/build.gradle
+++ b/packages/google_maps_flutter/google_maps_flutter/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/google_maps_flutter/google_maps_flutter/example/android/settings.gradle b/packages/google_maps_flutter/google_maps_flutter/example/android/settings.gradle
index 5a2f14fb18f..8d7543314fa 100644
--- a/packages/google_maps_flutter/google_maps_flutter/example/android/settings.gradle
+++ b/packages/google_maps_flutter/google_maps_flutter/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/google_maps_flutter/google_maps_flutter_android/example/android/build.gradle b/packages/google_maps_flutter/google_maps_flutter_android/example/android/build.gradle
index 6aa87d48bb2..82953dd04ae 100644
--- a/packages/google_maps_flutter/google_maps_flutter_android/example/android/build.gradle
+++ b/packages/google_maps_flutter/google_maps_flutter_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/google_maps_flutter/google_maps_flutter_android/example/android/settings.gradle b/packages/google_maps_flutter/google_maps_flutter_android/example/android/settings.gradle
index 5a2f14fb18f..8d7543314fa 100644
--- a/packages/google_maps_flutter/google_maps_flutter_android/example/android/settings.gradle
+++ b/packages/google_maps_flutter/google_maps_flutter_android/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/google_sign_in/google_sign_in/example/android/build.gradle b/packages/google_sign_in/google_sign_in/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/google_sign_in/google_sign_in/example/android/build.gradle
+++ b/packages/google_sign_in/google_sign_in/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/google_sign_in/google_sign_in/example/android/settings.gradle b/packages/google_sign_in/google_sign_in/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/google_sign_in/google_sign_in/example/android/settings.gradle
+++ b/packages/google_sign_in/google_sign_in/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/google_sign_in/google_sign_in_android/example/android/build.gradle b/packages/google_sign_in/google_sign_in_android/example/android/build.gradle
index 0a4256a8d02..6091524e1f1 100644
--- a/packages/google_sign_in/google_sign_in_android/example/android/build.gradle
+++ b/packages/google_sign_in/google_sign_in_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/google_sign_in/google_sign_in_android/example/android/settings.gradle b/packages/google_sign_in/google_sign_in_android/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/google_sign_in/google_sign_in_android/example/android/settings.gradle
+++ b/packages/google_sign_in/google_sign_in_android/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/image_picker/image_picker/example/android/build.gradle b/packages/image_picker/image_picker/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100755
--- a/packages/image_picker/image_picker/example/android/build.gradle
+++ b/packages/image_picker/image_picker/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/image_picker/image_picker/example/android/settings.gradle b/packages/image_picker/image_picker/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100755
--- a/packages/image_picker/image_picker/example/android/settings.gradle
+++ b/packages/image_picker/image_picker/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/image_picker/image_picker_android/example/android/build.gradle b/packages/image_picker/image_picker_android/example/android/build.gradle
index 5222cc753d5..381a331887a 100755
--- a/packages/image_picker/image_picker_android/example/android/build.gradle
+++ b/packages/image_picker/image_picker_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/image_picker/image_picker_android/example/android/settings.gradle b/packages/image_picker/image_picker_android/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100755
--- a/packages/image_picker/image_picker_android/example/android/settings.gradle
+++ b/packages/image_picker/image_picker_android/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/in_app_purchase/in_app_purchase/example/android/build.gradle b/packages/in_app_purchase/in_app_purchase/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/in_app_purchase/in_app_purchase/example/android/build.gradle
+++ b/packages/in_app_purchase/in_app_purchase/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/in_app_purchase/in_app_purchase/example/android/settings.gradle b/packages/in_app_purchase/in_app_purchase/example/android/settings.gradle
index 5a2f14fb18f..8d7543314fa 100644
--- a/packages/in_app_purchase/in_app_purchase/example/android/settings.gradle
+++ b/packages/in_app_purchase/in_app_purchase/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/in_app_purchase/in_app_purchase_android/example/android/build.gradle b/packages/in_app_purchase/in_app_purchase_android/example/android/build.gradle
index 358c72fca7b..6f7af720610 100644
--- a/packages/in_app_purchase/in_app_purchase_android/example/android/build.gradle
+++ b/packages/in_app_purchase/in_app_purchase_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/in_app_purchase/in_app_purchase_android/example/android/settings.gradle b/packages/in_app_purchase/in_app_purchase_android/example/android/settings.gradle
index 5a2f14fb18f..8d7543314fa 100644
--- a/packages/in_app_purchase/in_app_purchase_android/example/android/settings.gradle
+++ b/packages/in_app_purchase/in_app_purchase_android/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/local_auth/local_auth/example/android/build.gradle b/packages/local_auth/local_auth/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/local_auth/local_auth/example/android/build.gradle
+++ b/packages/local_auth/local_auth/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/local_auth/local_auth/example/android/settings.gradle b/packages/local_auth/local_auth/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/local_auth/local_auth/example/android/settings.gradle
+++ b/packages/local_auth/local_auth/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/local_auth/local_auth_android/example/android/build.gradle b/packages/local_auth/local_auth_android/example/android/build.gradle
index ab40396e822..da0dec5c327 100644
--- a/packages/local_auth/local_auth_android/example/android/build.gradle
+++ b/packages/local_auth/local_auth_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/local_auth/local_auth_android/example/android/settings.gradle b/packages/local_auth/local_auth_android/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/local_auth/local_auth_android/example/android/settings.gradle
+++ b/packages/local_auth/local_auth_android/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/palette_generator/example/android/build.gradle b/packages/palette_generator/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/palette_generator/example/android/build.gradle
+++ b/packages/palette_generator/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/palette_generator/example/android/settings.gradle b/packages/palette_generator/example/android/settings.gradle
index 5a2f14fb18f..8d7543314fa 100644
--- a/packages/palette_generator/example/android/settings.gradle
+++ b/packages/palette_generator/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/path_provider/path_provider/example/android/build.gradle b/packages/path_provider/path_provider/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/path_provider/path_provider/example/android/build.gradle
+++ b/packages/path_provider/path_provider/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/path_provider/path_provider/example/android/settings.gradle b/packages/path_provider/path_provider/example/android/settings.gradle
index 6cb349eef1b..0360c9f26f6 100644
--- a/packages/path_provider/path_provider/example/android/settings.gradle
+++ b/packages/path_provider/path_provider/example/android/settings.gradle
@@ -12,4 +12,17 @@ plugins.each { name, path ->
     def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
     include ":$name"
     project(":$name").projectDir = pluginDirectory
-}
\ No newline at end of file
+}
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/path_provider/path_provider_android/example/android/build.gradle b/packages/path_provider/path_provider_android/example/android/build.gradle
index 34a17f4de0e..d3f76d61183 100644
--- a/packages/path_provider/path_provider_android/example/android/build.gradle
+++ b/packages/path_provider/path_provider_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/path_provider/path_provider_android/example/android/settings.gradle b/packages/path_provider/path_provider_android/example/android/settings.gradle
index 6cb349eef1b..0360c9f26f6 100644
--- a/packages/path_provider/path_provider_android/example/android/settings.gradle
+++ b/packages/path_provider/path_provider_android/example/android/settings.gradle
@@ -12,4 +12,17 @@ plugins.each { name, path ->
     def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
     include ":$name"
     project(":$name").projectDir = pluginDirectory
-}
\ No newline at end of file
+}
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/pigeon/example/app/android/build.gradle b/packages/pigeon/example/app/android/build.gradle
index f7eb7f63ce1..39a10a52cbe 100644
--- a/packages/pigeon/example/app/android/build.gradle
+++ b/packages/pigeon/example/app/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/pigeon/example/app/android/settings.gradle b/packages/pigeon/example/app/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/pigeon/example/app/android/settings.gradle
+++ b/packages/pigeon/example/app/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/pigeon/platform_tests/alternate_language_test_plugin/example/android/build.gradle b/packages/pigeon/platform_tests/alternate_language_test_plugin/example/android/build.gradle
index 51e204962c0..3c7f9bd24a2 100644
--- a/packages/pigeon/platform_tests/alternate_language_test_plugin/example/android/build.gradle
+++ b/packages/pigeon/platform_tests/alternate_language_test_plugin/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/pigeon/platform_tests/alternate_language_test_plugin/example/android/settings.gradle b/packages/pigeon/platform_tests/alternate_language_test_plugin/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/pigeon/platform_tests/alternate_language_test_plugin/example/android/settings.gradle
+++ b/packages/pigeon/platform_tests/alternate_language_test_plugin/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/pigeon/platform_tests/test_plugin/example/android/build.gradle b/packages/pigeon/platform_tests/test_plugin/example/android/build.gradle
index 13270f694c5..26e1ce2d030 100644
--- a/packages/pigeon/platform_tests/test_plugin/example/android/build.gradle
+++ b/packages/pigeon/platform_tests/test_plugin/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/pigeon/platform_tests/test_plugin/example/android/settings.gradle b/packages/pigeon/platform_tests/test_plugin/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/pigeon/platform_tests/test_plugin/example/android/settings.gradle
+++ b/packages/pigeon/platform_tests/test_plugin/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/quick_actions/quick_actions/example/android/build.gradle b/packages/quick_actions/quick_actions/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/quick_actions/quick_actions/example/android/build.gradle
+++ b/packages/quick_actions/quick_actions/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/quick_actions/quick_actions/example/android/settings.gradle b/packages/quick_actions/quick_actions/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/quick_actions/quick_actions/example/android/settings.gradle
+++ b/packages/quick_actions/quick_actions/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/quick_actions/quick_actions_android/example/android/build.gradle b/packages/quick_actions/quick_actions_android/example/android/build.gradle
index edc0f1923c1..309906a212f 100644
--- a/packages/quick_actions/quick_actions_android/example/android/build.gradle
+++ b/packages/quick_actions/quick_actions_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/quick_actions/quick_actions_android/example/android/settings.gradle b/packages/quick_actions/quick_actions_android/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/quick_actions/quick_actions_android/example/android/settings.gradle
+++ b/packages/quick_actions/quick_actions_android/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/rfw/example/hello/android/build.gradle b/packages/rfw/example/hello/android/build.gradle
index 586557f0afc..228f12cefbc 100644
--- a/packages/rfw/example/hello/android/build.gradle
+++ b/packages/rfw/example/hello/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/rfw/example/hello/android/settings.gradle b/packages/rfw/example/hello/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/rfw/example/hello/android/settings.gradle
+++ b/packages/rfw/example/hello/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/rfw/example/local/android/build.gradle b/packages/rfw/example/local/android/build.gradle
index 586557f0afc..228f12cefbc 100644
--- a/packages/rfw/example/local/android/build.gradle
+++ b/packages/rfw/example/local/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/rfw/example/local/android/settings.gradle b/packages/rfw/example/local/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/rfw/example/local/android/settings.gradle
+++ b/packages/rfw/example/local/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/rfw/example/remote/android/build.gradle b/packages/rfw/example/remote/android/build.gradle
index 586557f0afc..228f12cefbc 100644
--- a/packages/rfw/example/remote/android/build.gradle
+++ b/packages/rfw/example/remote/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/rfw/example/remote/android/settings.gradle b/packages/rfw/example/remote/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/rfw/example/remote/android/settings.gradle
+++ b/packages/rfw/example/remote/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/shared_preferences/shared_preferences/example/android/build.gradle b/packages/shared_preferences/shared_preferences/example/android/build.gradle
index ce647a433bd..582d60a2faa 100644
--- a/packages/shared_preferences/shared_preferences/example/android/build.gradle
+++ b/packages/shared_preferences/shared_preferences/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/shared_preferences/shared_preferences/example/android/settings.gradle b/packages/shared_preferences/shared_preferences/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/shared_preferences/shared_preferences/example/android/settings.gradle
+++ b/packages/shared_preferences/shared_preferences/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/shared_preferences/shared_preferences_android/example/android/build.gradle b/packages/shared_preferences/shared_preferences_android/example/android/build.gradle
index f6f6475fb39..3cd5d4a83c4 100644
--- a/packages/shared_preferences/shared_preferences_android/example/android/build.gradle
+++ b/packages/shared_preferences/shared_preferences_android/example/android/build.gradle
@@ -13,6 +13,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/shared_preferences/shared_preferences_android/example/android/settings.gradle b/packages/shared_preferences/shared_preferences_android/example/android/settings.gradle
index 44e62bcf06a..3a97314b38c 100644
--- a/packages/shared_preferences/shared_preferences_android/example/android/settings.gradle
+++ b/packages/shared_preferences/shared_preferences_android/example/android/settings.gradle
@@ -9,3 +9,16 @@ localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
 def flutterSdkPath = properties.getProperty("flutter.sdk")
 assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
 apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/url_launcher/url_launcher/example/android/build.gradle b/packages/url_launcher/url_launcher/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/url_launcher/url_launcher/example/android/build.gradle
+++ b/packages/url_launcher/url_launcher/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/url_launcher/url_launcher/example/android/settings.gradle b/packages/url_launcher/url_launcher/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/url_launcher/url_launcher/example/android/settings.gradle
+++ b/packages/url_launcher/url_launcher/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/url_launcher/url_launcher_android/example/android/build.gradle b/packages/url_launcher/url_launcher_android/example/android/build.gradle
index 8a0165753a9..40cbdf3c0de 100644
--- a/packages/url_launcher/url_launcher_android/example/android/build.gradle
+++ b/packages/url_launcher/url_launcher_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/url_launcher/url_launcher_android/example/android/settings.gradle b/packages/url_launcher/url_launcher_android/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/url_launcher/url_launcher_android/example/android/settings.gradle
+++ b/packages/url_launcher/url_launcher_android/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/video_player/video_player/example/android/build.gradle b/packages/video_player/video_player/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/video_player/video_player/example/android/build.gradle
+++ b/packages/video_player/video_player/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/video_player/video_player/example/android/settings.gradle b/packages/video_player/video_player/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/video_player/video_player/example/android/settings.gradle
+++ b/packages/video_player/video_player/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/video_player/video_player_android/example/android/build.gradle b/packages/video_player/video_player_android/example/android/build.gradle
index bc26b58842c..0a2199e8925 100644
--- a/packages/video_player/video_player_android/example/android/build.gradle
+++ b/packages/video_player/video_player_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
@@ -39,9 +45,9 @@ gradle.projectsEvaluated {
 
             // Workaround for several warnings when building
             // that the above turns into errors, coming from
-            // org.checkerframework.checker.nullness.qual and 
+            // org.checkerframework.checker.nullness.qual and
             // com.google.errorprone.annotations:
-            // 
+            //
             //   warning: Cannot find annotation method 'value()' in type
             //   'EnsuresNonNull': class file for
             //   org.checkerframework.checker.nullness.qual.EnsuresNonNull not found
diff --git a/packages/video_player/video_player_android/example/android/settings.gradle b/packages/video_player/video_player_android/example/android/settings.gradle
index 115da6cb4f4..0360c9f26f6 100644
--- a/packages/video_player/video_player_android/example/android/settings.gradle
+++ b/packages/video_player/video_player_android/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/webview_flutter/webview_flutter/example/android/build.gradle b/packages/webview_flutter/webview_flutter/example/android/build.gradle
index 0822484928b..6ae7ddc2ce5 100644
--- a/packages/webview_flutter/webview_flutter/example/android/build.gradle
+++ b/packages/webview_flutter/webview_flutter/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/webview_flutter/webview_flutter/example/android/settings.gradle b/packages/webview_flutter/webview_flutter/example/android/settings.gradle
index 5a2f14fb18f..8d7543314fa 100644
--- a/packages/webview_flutter/webview_flutter/example/android/settings.gradle
+++ b/packages/webview_flutter/webview_flutter/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/packages/webview_flutter/webview_flutter_android/example/android/build.gradle b/packages/webview_flutter/webview_flutter_android/example/android/build.gradle
index 566572be2e5..f87c8c63983 100644
--- a/packages/webview_flutter/webview_flutter_android/example/android/build.gradle
+++ b/packages/webview_flutter/webview_flutter_android/example/android/build.gradle
@@ -11,6 +11,12 @@ buildscript {
 
 allprojects {
     repositories {
+        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+        def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
+        if (System.getenv().containsKey(artifactRepoKey)) {
+            println "Using artifact hub"
+            maven { url System.getenv(artifactRepoKey) }
+        }
         google()
         mavenCentral()
     }
diff --git a/packages/webview_flutter/webview_flutter_android/example/android/settings.gradle b/packages/webview_flutter/webview_flutter_android/example/android/settings.gradle
index 5a2f14fb18f..8d7543314fa 100644
--- a/packages/webview_flutter/webview_flutter_android/example/android/settings.gradle
+++ b/packages/webview_flutter/webview_flutter_android/example/android/settings.gradle
@@ -13,3 +13,16 @@ plugins.each { name, path ->
     include ":$name"
     project(":$name").projectDir = pluginDirectory
 }
+
+// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+buildscript {
+  repositories {
+    maven {
+      url "https://plugins.gradle.org/m2/"
+    }
+  }
+  dependencies {
+    classpath "gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin:2.2.1"
+  }
+}
+apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index 2be4455890a..ff87db9efcb 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -180,7 +180,7 @@ class GradleCheckCommand extends PackageLoopingCommand {
 
   /// Validates the top-level settings.gradle for an example app (e.g.,
   /// some_package/example/android/settings.gradle).
-  _validateExampleTopLevelSettingsGradle(
+  bool _validateExampleTopLevelSettingsGradle(
       RepositoryPackage package, File gradleSettingsFile) {
     print('${indentation}Validating '
         '${getRelativePosixPath(gradleSettingsFile, from: package.directory)}.');

From d78c475c7e711dec06730a8eea16bf04d36795fb Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Fri, 4 Aug 2023 11:22:15 -0400
Subject: [PATCH 09/11] make analyzer happy

---
 script/tool/lib/src/gradle_check_command.dart | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index ff87db9efcb..b69551715a2 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -154,9 +154,9 @@ class GradleCheckCommand extends PackageLoopingCommand {
     final RegExp documentationPresentRegex = RegExp(
         r'github.com.*wiki.*Plugins-and-Packages-repository-structure.*gradle-structure');
     final RegExp keyReadRegex =
-        RegExp('if.*System\.getenv.*containsKey.*$keyVariable');
+        RegExp('if.*System.getenv.*containsKey.*$keyVariable');
     final RegExp keyUsedRegex =
-        RegExp('maven.*url.*System\.getenv.*$keyVariable.*');
+        RegExp('maven.*url.*System.getenv.*$keyVariable.*');
 
     final bool keyPresent =
         gradleLines.any((String line) => keyPresentRegex.hasMatch(line));

From d82c7446bbafcf77bc8a23a64001649cf1c6da59 Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Fri, 4 Aug 2023 14:35:52 -0400
Subject: [PATCH 10/11] pr feedback

---
 script/tool/lib/src/gradle_check_command.dart | 23 ++++++++++---------
 .../tool/test/gradle_check_command_test.dart  |  2 --
 2 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index b69551715a2..20ac2bbd326 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -130,11 +130,16 @@ class GradleCheckCommand extends PackageLoopingCommand {
     return succeeded;
   }
 
+  /// Documentation url for Artifact hub implementation in flutter repo's.
+  @visibleForTesting
+  static const String artifactHubDocumentationString =
+      r'https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure';
+
   /// String printed as example of valid example root build.gradle repository
   /// configuration that enables artifact hub env variable.
   @visibleForTesting
-  static const String exampleRootGradleArtifactHubString = r'''
-        // See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+  static const String exampleRootGradleArtifactHubString = '''
+        // See $artifactHubDocumentationString for more info.
         def artifactRepoKey = 'ARTIFACT_HUB_REPOSITORY'
         if (System.getenv().containsKey(artifactRepoKey)) {
             println "Using artifact hub"
@@ -167,10 +172,7 @@ class GradleCheckCommand extends PackageLoopingCommand {
     final bool keyUsed =
         gradleLines.any((String line) => keyUsedRegex.hasMatch(line));
 
-    if (!documentationPresent) {
-      printError('Does not link artifact hub documentation.');
-    }
-    if (!(keyPresent && keyRead && keyUsed)) {
+    if (!(documentationPresent && keyPresent && keyRead && keyUsed)) {
       printError('Failed Artifact Hub validation. Include the following in '
           'example root build.gradle:\n$exampleRootGradleArtifactHubString');
     }
@@ -199,7 +201,7 @@ class GradleCheckCommand extends PackageLoopingCommand {
   /// configuration that enables artifact hub env variable.
   @visibleForTesting
   static String exampleRootSettingsArtifactHubString = '''
-// See https://github.com/flutter/flutter/wiki/Plugins-and-Packages-repository-structure#gradle-structure for more info.
+// See $artifactHubDocumentationString for more info.
 buildscript {
   repositories {
     maven {
@@ -233,10 +235,9 @@ apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
     final bool artifactRegistryPluginApplied = gradleLines
         .any((String line) => artifactRegistryPluginApplyRegex.hasMatch(line));
 
-    if (!documentationPresent) {
-      printError('Does not link artifact hub documentation.');
-    }
-    if (!(artifactRegistryDefined && artifactRegistryPluginApplied)) {
+    if (!(documentationPresent &&
+        artifactRegistryDefined &&
+        artifactRegistryPluginApplied)) {
       printError('Failed Artifact Hub validation. Include the following in '
           'example root settings.gradle:\n$exampleRootSettingsArtifactHubString');
     }
diff --git a/script/tool/test/gradle_check_command_test.dart b/script/tool/test/gradle_check_command_test.dart
index 49855ee1744..9e0a0a2d2aa 100644
--- a/script/tool/test/gradle_check_command_test.dart
+++ b/script/tool/test/gradle_check_command_test.dart
@@ -747,7 +747,6 @@ dependencies {
       expect(
         output,
         containsAllInOrder(<Matcher>[
-          contains('Does not link artifact hub documentation.'),
           contains(GradleCheckCommand.exampleRootGradleArtifactHubString),
           contains(GradleCheckCommand.exampleRootSettingsArtifactHubString),
         ]),
@@ -813,7 +812,6 @@ dependencies {
       expect(
         output,
         containsAllInOrder(<Matcher>[
-          contains('Does not link artifact hub documentation.'),
           contains(GradleCheckCommand.exampleRootSettingsArtifactHubString),
         ]),
       );

From a7dee37f437856235d59fe6494da4cd3ee06297c Mon Sep 17 00:00:00 2001
From: Reid Baker <reidbaker@google.com>
Date: Mon, 7 Aug 2023 10:22:15 -0400
Subject: [PATCH 11/11] code review feedback

---
 script/tool/lib/src/gradle_check_command.dart | 19 ++++++++++---------
 .../tool/test/gradle_check_command_test.dart  |  1 -
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index 20ac2bbd326..e1af42fd724 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -67,7 +67,7 @@ class GradleCheckCommand extends PackageLoopingCommand {
         succeeded = false;
       }
       final File topLevelSettingsGradleFile =
-          _getSettignsGradleFile(androidDir);
+          _getSettingsGradleFile(androidDir);
       if (!_validateExampleTopLevelSettingsGradle(
           package, topLevelSettingsGradleFile)) {
         succeeded = false;
@@ -89,7 +89,7 @@ class GradleCheckCommand extends PackageLoopingCommand {
   File _getBuildGradleFile(Directory dir) => dir.childFile('build.gradle');
 
   // Returns the settings gradle file in the given directory.
-  File _getSettignsGradleFile(Directory dir) =>
+  File _getSettingsGradleFile(Directory dir) =>
       dir.childFile('settings.gradle');
 
   // Returns the main/AndroidManifest.xml file for the given package.
@@ -153,15 +153,16 @@ class GradleCheckCommand extends PackageLoopingCommand {
   /// Required in root gradle file.
   bool _validateArtifactHubUsage(
       RepositoryPackage example, List<String> gradleLines) {
+    // Gradle variable name used to hold environment variable string.
     const String keyVariable = 'artifactRepoKey';
     final RegExp keyPresentRegex =
-        RegExp("$keyVariable\\s+=\\s+'ARTIFACT_HUB_REPOSITORY'");
+        RegExp('$keyVariable' r"\s+=\s+'ARTIFACT_HUB_REPOSITORY'");
     final RegExp documentationPresentRegex = RegExp(
-        r'github.com.*wiki.*Plugins-and-Packages-repository-structure.*gradle-structure');
+        r'github\.com.*wiki.*Plugins-and-Packages-repository-structure.*gradle-structure');
     final RegExp keyReadRegex =
-        RegExp('if.*System.getenv.*containsKey.*$keyVariable');
+        RegExp(r'if.*System\.getenv.*\.containsKey.*' '$keyVariable');
     final RegExp keyUsedRegex =
-        RegExp('maven.*url.*System.getenv.*$keyVariable.*');
+        RegExp(r'maven.*url.*System\.getenv\(' '$keyVariable');
 
     final bool keyPresent =
         gradleLines.any((String line) => keyPresentRegex.hasMatch(line));
@@ -222,11 +223,11 @@ apply plugin: "com.google.cloud.artifactregistry.gradle-plugin"
   bool _validateArtifactHubSettingsUsage(
       RepositoryPackage example, List<String> gradleLines) {
     final RegExp documentationPresentRegex = RegExp(
-        r'github.com.*wiki.*Plugins-and-Packages-repository-structure.*gradle-structure');
+        r'github\.com.*wiki.*Plugins-and-Packages-repository-structure.*gradle-structure');
     final RegExp artifactRegistryDefinitionRegex = RegExp(
-        'classpath.*gradle.plugin.com.google.cloud.artifactregistry:artifactregistry-gradle-plugin');
+        r'classpath.*gradle\.plugin\.com\.google\.cloud\.artifactregistry:artifactregistry-gradle-plugin');
     final RegExp artifactRegistryPluginApplyRegex = RegExp(
-        'apply.*plugin.*com.google.cloud.artifactregistry.gradle-plugin');
+        r'apply.*plugin.*com\.google\.cloud\.artifactregistry\.gradle-plugin');
 
     final bool documentationPresent = gradleLines
         .any((String line) => documentationPresentRegex.hasMatch(line));
diff --git a/script/tool/test/gradle_check_command_test.dart b/script/tool/test/gradle_check_command_test.dart
index 9e0a0a2d2aa..a7db8317b94 100644
--- a/script/tool/test/gradle_check_command_test.dart
+++ b/script/tool/test/gradle_check_command_test.dart
@@ -777,7 +777,6 @@ dependencies {
       expect(
         output,
         containsAllInOrder(<Matcher>[
-          contains('Does not link artifact hub documentation.'),
           contains(GradleCheckCommand.exampleRootGradleArtifactHubString),
         ]),
       );