diff --git a/packages/camera/camera_android/CHANGELOG.md b/packages/camera/camera_android/CHANGELOG.md
index 661cafd..91bd0fb 100644
--- a/packages/camera/camera_android/CHANGELOG.md
+++ b/packages/camera/camera_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.10.6+2
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 0.10.6+1
 
 * Adds a namespace for compatibility with AGP 8.0.
diff --git a/packages/camera/camera_android/android/build.gradle b/packages/camera/camera_android/android/build.gradle
index 6b43770..53ac705 100644
--- a/packages/camera/camera_android/android/build.gradle
+++ b/packages/camera/camera_android/android/build.gradle
@@ -27,7 +27,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.camera'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.camera'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/camera/camera_android/pubspec.yaml b/packages/camera/camera_android/pubspec.yaml
index 2b7c0c2..9c4fc57 100644
--- a/packages/camera/camera_android/pubspec.yaml
+++ b/packages/camera/camera_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Android implementation of the camera plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/camera/camera_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
-version: 0.10.6+1
+version: 0.10.6+2
 
 environment:
   sdk: ">=2.17.0 <4.0.0"
diff --git a/packages/camera/camera_android_camerax/android/build.gradle b/packages/camera/camera_android_camerax/android/build.gradle
index 1ae38c2..d056449 100644
--- a/packages/camera/camera_android_camerax/android/build.gradle
+++ b/packages/camera/camera_android_camerax/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.camerax'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.camerax'
+    }
     // CameraX dependencies require compilation against version 33 or later.
     compileSdkVersion 33
 
diff --git a/packages/espresso/CHANGELOG.md b/packages/espresso/CHANGELOG.md
index 7204107..af45fb8 100644
--- a/packages/espresso/CHANGELOG.md
+++ b/packages/espresso/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.3.0+4
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 0.3.0+3
 
 * Adds `targetCompatibilty` matching `sourceCompatibility` for older toolchains.
diff --git a/packages/espresso/android/build.gradle b/packages/espresso/android/build.gradle
index 034779a..1d28a98 100644
--- a/packages/espresso/android/build.gradle
+++ b/packages/espresso/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'com.example.espresso'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'com.example.espresso'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/espresso/pubspec.yaml b/packages/espresso/pubspec.yaml
index ef0d6dd..0dffbdb 100644
--- a/packages/espresso/pubspec.yaml
+++ b/packages/espresso/pubspec.yaml
@@ -3,7 +3,7 @@
   Allows driving Flutter widgets from a native Espresso test.
 repository: https://github.com/flutter/packages/tree/main/packages/espresso
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+espresso%22
-version: 0.3.0+3
+version: 0.3.0+4
 
 environment:
   sdk: ">=2.17.0 <4.0.0"
diff --git a/packages/flutter_plugin_android_lifecycle/CHANGELOG.md b/packages/flutter_plugin_android_lifecycle/CHANGELOG.md
index ca354c8..1e1e031 100644
--- a/packages/flutter_plugin_android_lifecycle/CHANGELOG.md
+++ b/packages/flutter_plugin_android_lifecycle/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.0.13
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 2.0.12
 
 * Adds `targetCompatibilty` matching `sourceCompatibility` for older toolchains.
diff --git a/packages/flutter_plugin_android_lifecycle/android/build.gradle b/packages/flutter_plugin_android_lifecycle/android/build.gradle
index 1203eb3..5a19330 100644
--- a/packages/flutter_plugin_android_lifecycle/android/build.gradle
+++ b/packages/flutter_plugin_android_lifecycle/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.flutter_plugin_android_lifecycle'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.flutter_plugin_android_lifecycle'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/flutter_plugin_android_lifecycle/pubspec.yaml b/packages/flutter_plugin_android_lifecycle/pubspec.yaml
index d76dabd..fd111c2 100644
--- a/packages/flutter_plugin_android_lifecycle/pubspec.yaml
+++ b/packages/flutter_plugin_android_lifecycle/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Flutter plugin for accessing an Android Lifecycle within other plugins.
 repository: https://github.com/flutter/packages/tree/main/packages/flutter_plugin_android_lifecycle
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+flutter_plugin_android_lifecycle%22
-version: 2.0.12
+version: 2.0.13
 
 environment:
   sdk: ">=2.17.0 <4.0.0"
diff --git a/packages/google_maps_flutter/google_maps_flutter_android/CHANGELOG.md b/packages/google_maps_flutter/google_maps_flutter_android/CHANGELOG.md
index 0e91f2d..c61f156 100644
--- a/packages/google_maps_flutter/google_maps_flutter_android/CHANGELOG.md
+++ b/packages/google_maps_flutter/google_maps_flutter_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.4.13
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 2.4.12
 
 * Fixes Java warnings.
diff --git a/packages/google_maps_flutter/google_maps_flutter_android/android/build.gradle b/packages/google_maps_flutter/google_maps_flutter_android/android/build.gradle
index 35ba284..42e05a7 100644
--- a/packages/google_maps_flutter/google_maps_flutter_android/android/build.gradle
+++ b/packages/google_maps_flutter/google_maps_flutter_android/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.googlemaps'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.googlemaps'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/google_maps_flutter/google_maps_flutter_android/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter_android/pubspec.yaml
index 0391470..71ba774 100644
--- a/packages/google_maps_flutter/google_maps_flutter_android/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Android implementation of the google_maps_flutter plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/google_maps_flutter/google_maps_flutter_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+maps%22
-version: 2.4.12
+version: 2.4.13
 
 environment:
   sdk: ">=2.17.0 <4.0.0"
diff --git a/packages/google_sign_in/google_sign_in_android/CHANGELOG.md b/packages/google_sign_in/google_sign_in_android/CHANGELOG.md
index d9082a6..7aeafc1 100644
--- a/packages/google_sign_in/google_sign_in_android/CHANGELOG.md
+++ b/packages/google_sign_in/google_sign_in_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 6.1.14
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 6.1.13
 
 * Adds `targetCompatibilty` matching `sourceCompatibility` for older toolchains.
diff --git a/packages/google_sign_in/google_sign_in_android/android/build.gradle b/packages/google_sign_in/google_sign_in_android/android/build.gradle
index 72c383c..e48223d 100644
--- a/packages/google_sign_in/google_sign_in_android/android/build.gradle
+++ b/packages/google_sign_in/google_sign_in_android/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.googlesignin'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.googlesignin'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/google_sign_in/google_sign_in_android/pubspec.yaml b/packages/google_sign_in/google_sign_in_android/pubspec.yaml
index 1ff448e..7390474 100644
--- a/packages/google_sign_in/google_sign_in_android/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Android implementation of the google_sign_in plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/google_sign_in/google_sign_in_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+google_sign_in%22
-version: 6.1.13
+version: 6.1.14
 
 environment:
   sdk: ">=2.17.0 <4.0.0"
diff --git a/packages/image_picker/image_picker_android/CHANGELOG.md b/packages/image_picker/image_picker_android/CHANGELOG.md
index 5128172..44902aa 100644
--- a/packages/image_picker/image_picker_android/CHANGELOG.md
+++ b/packages/image_picker/image_picker_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.8.6+9
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 0.8.6+8
 
 * Adds a namespace for compatibility with AGP 8.0.
diff --git a/packages/image_picker/image_picker_android/android/build.gradle b/packages/image_picker/image_picker_android/android/build.gradle
index 777a4e4..08b4bb3 100644
--- a/packages/image_picker/image_picker_android/android/build.gradle
+++ b/packages/image_picker/image_picker_android/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.imagepicker'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.imagepicker'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/image_picker/image_picker_android/pubspec.yaml b/packages/image_picker/image_picker_android/pubspec.yaml
index 349cacc..e95d14c 100755
--- a/packages/image_picker/image_picker_android/pubspec.yaml
+++ b/packages/image_picker/image_picker_android/pubspec.yaml
@@ -3,7 +3,7 @@
 repository: https://github.com/flutter/packages/tree/main/packages/image_picker/image_picker_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+image_picker%22
 
-version: 0.8.6+8
+version: 0.8.6+9
 
 environment:
   sdk: ">=2.18.0 <4.0.0"
diff --git a/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md b/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md
index 1348347..8f1131b 100644
--- a/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md
+++ b/packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.2.5+4
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 0.2.5+3
 
 * Updates com.android.billingclient:billing from 5.1.0 to 5.2.0.
diff --git a/packages/in_app_purchase/in_app_purchase_android/android/build.gradle b/packages/in_app_purchase/in_app_purchase_android/android/build.gradle
index 2892be2..94acf3a 100644
--- a/packages/in_app_purchase/in_app_purchase_android/android/build.gradle
+++ b/packages/in_app_purchase/in_app_purchase_android/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.inapppurchase'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.inapppurchase'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml b/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
index f813111..96426db 100644
--- a/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: An implementation for the Android platform of the Flutter `in_app_purchase` plugin. This uses the Android BillingClient APIs.
 repository: https://github.com/flutter/packages/tree/main/packages/in_app_purchase/in_app_purchase_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+in_app_purchase%22
-version: 0.2.5+3
+version: 0.2.5+4
 
 environment:
   sdk: ">=2.18.0 <4.0.0"
diff --git a/packages/local_auth/local_auth_android/CHANGELOG.md b/packages/local_auth/local_auth_android/CHANGELOG.md
index 1f65132..6752fc5 100644
--- a/packages/local_auth/local_auth_android/CHANGELOG.md
+++ b/packages/local_auth/local_auth_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.0.27
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 1.0.26
 
 * Adds `targetCompatibilty` matching `sourceCompatibility` for older toolchains.
diff --git a/packages/local_auth/local_auth_android/android/build.gradle b/packages/local_auth/local_auth_android/android/build.gradle
index a212f23..6c1dc9c 100644
--- a/packages/local_auth/local_auth_android/android/build.gradle
+++ b/packages/local_auth/local_auth_android/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.localauth'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.localauth'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/local_auth/local_auth_android/pubspec.yaml b/packages/local_auth/local_auth_android/pubspec.yaml
index d9cf8df..a1843ec 100644
--- a/packages/local_auth/local_auth_android/pubspec.yaml
+++ b/packages/local_auth/local_auth_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Android implementation of the local_auth plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/local_auth/local_auth_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+local_auth%22
-version: 1.0.26
+version: 1.0.27
 
 environment:
   sdk: ">=2.17.0 <4.0.0"
diff --git a/packages/path_provider/path_provider_android/CHANGELOG.md b/packages/path_provider/path_provider_android/CHANGELOG.md
index 660b3fa..5f55141 100644
--- a/packages/path_provider/path_provider_android/CHANGELOG.md
+++ b/packages/path_provider/path_provider_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.0.27
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 2.0.26
 
 * Adds a namespace for compatibility with AGP 8.0.
diff --git a/packages/path_provider/path_provider_android/android/build.gradle b/packages/path_provider/path_provider_android/android/build.gradle
index 09b407a..0cdb3d0 100644
--- a/packages/path_provider/path_provider_android/android/build.gradle
+++ b/packages/path_provider/path_provider_android/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.pathprovider'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.pathprovider'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/path_provider/path_provider_android/pubspec.yaml b/packages/path_provider/path_provider_android/pubspec.yaml
index 95300b1..f22706b 100644
--- a/packages/path_provider/path_provider_android/pubspec.yaml
+++ b/packages/path_provider/path_provider_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Android implementation of the path_provider plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/path_provider/path_provider_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+path_provider%22
-version: 2.0.26
+version: 2.0.27
 
 environment:
   sdk: ">=2.17.0 <4.0.0"
diff --git a/packages/pigeon/platform_tests/alternate_language_test_plugin/android/build.gradle b/packages/pigeon/platform_tests/alternate_language_test_plugin/android/build.gradle
index 8f4a155..a6a5027 100644
--- a/packages/pigeon/platform_tests/alternate_language_test_plugin/android/build.gradle
+++ b/packages/pigeon/platform_tests/alternate_language_test_plugin/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'com.example.alternate_language_test_plugin'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'com.example.alternate_language_test_plugin'
+    }
     compileSdkVersion 33
 
     compileOptions {
diff --git a/packages/pigeon/platform_tests/test_plugin/android/build.gradle b/packages/pigeon/platform_tests/test_plugin/android/build.gradle
index 6ee629b..e99796f 100644
--- a/packages/pigeon/platform_tests/test_plugin/android/build.gradle
+++ b/packages/pigeon/platform_tests/test_plugin/android/build.gradle
@@ -25,7 +25,10 @@
 apply plugin: 'kotlin-android'
 
 android {
-    namespace 'com.example.test_plugin'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'com.example.test_plugin'
+    }
     compileSdkVersion 33
 
     compileOptions {
diff --git a/packages/quick_actions/quick_actions_android/CHANGELOG.md b/packages/quick_actions/quick_actions_android/CHANGELOG.md
index 3187f6a..32a0fa1 100644
--- a/packages/quick_actions/quick_actions_android/CHANGELOG.md
+++ b/packages/quick_actions/quick_actions_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.0.4
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 1.0.3
 
 * Adds a namespace for compatibility with AGP 8.0.
diff --git a/packages/quick_actions/quick_actions_android/android/build.gradle b/packages/quick_actions/quick_actions_android/android/build.gradle
index 935c517..71bd5b2 100644
--- a/packages/quick_actions/quick_actions_android/android/build.gradle
+++ b/packages/quick_actions/quick_actions_android/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.quickactions'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.quickactions'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/quick_actions/quick_actions_android/pubspec.yaml b/packages/quick_actions/quick_actions_android/pubspec.yaml
index ca16d8b..65f71d6 100644
--- a/packages/quick_actions/quick_actions_android/pubspec.yaml
+++ b/packages/quick_actions/quick_actions_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: An implementation for the Android platform of the Flutter `quick_actions` plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/quick_actions/quick_actions_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+in_app_purchase%22
-version: 1.0.3
+version: 1.0.4
 
 environment:
   sdk: ">=2.17.0 <4.0.0"
diff --git a/packages/shared_preferences/shared_preferences_android/CHANGELOG.md b/packages/shared_preferences/shared_preferences_android/CHANGELOG.md
index a14bc1d..e901898 100644
--- a/packages/shared_preferences/shared_preferences_android/CHANGELOG.md
+++ b/packages/shared_preferences/shared_preferences_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.1.4
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 2.1.3
 
 * Adds a namespace for compatibility with AGP 8.0.
diff --git a/packages/shared_preferences/shared_preferences_android/android/build.gradle b/packages/shared_preferences/shared_preferences_android/android/build.gradle
index 4469e49..f3074dd 100644
--- a/packages/shared_preferences/shared_preferences_android/android/build.gradle
+++ b/packages/shared_preferences/shared_preferences_android/android/build.gradle
@@ -30,7 +30,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.sharedpreferences'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.sharedpreferences'
+    }
     compileSdkVersion 33
 
     compileOptions {
diff --git a/packages/shared_preferences/shared_preferences_android/pubspec.yaml b/packages/shared_preferences/shared_preferences_android/pubspec.yaml
index e9381f4..b8d240a 100644
--- a/packages/shared_preferences/shared_preferences_android/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Android implementation of the shared_preferences plugin
 repository: https://github.com/flutter/packages/tree/main/packages/shared_preferences/shared_preferences_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+shared_preferences%22
-version: 2.1.3
+version: 2.1.4
 
 environment:
   sdk: ">=2.17.0 <4.0.0"
diff --git a/packages/url_launcher/url_launcher_android/CHANGELOG.md b/packages/url_launcher/url_launcher_android/CHANGELOG.md
index fdf4eb9..aa82c4b 100644
--- a/packages/url_launcher/url_launcher_android/CHANGELOG.md
+++ b/packages/url_launcher/url_launcher_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 6.0.31
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 6.0.30
 
 * Adds `targetCompatibilty` matching `sourceCompatibility` for older toolchains.
diff --git a/packages/url_launcher/url_launcher_android/android/build.gradle b/packages/url_launcher/url_launcher_android/android/build.gradle
index e0c2fc6..3344266 100644
--- a/packages/url_launcher/url_launcher_android/android/build.gradle
+++ b/packages/url_launcher/url_launcher_android/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.urllauncher'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.urllauncher'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/url_launcher/url_launcher_android/pubspec.yaml b/packages/url_launcher/url_launcher_android/pubspec.yaml
index cf35a0b..73a427d 100644
--- a/packages/url_launcher/url_launcher_android/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Android implementation of the url_launcher plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/url_launcher/url_launcher_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+url_launcher%22
-version: 6.0.30
+version: 6.0.31
 
 environment:
   sdk: ">=2.18.0 <4.0.0"
diff --git a/packages/video_player/video_player_android/CHANGELOG.md b/packages/video_player/video_player_android/CHANGELOG.md
index 3a60162..a204cb2 100644
--- a/packages/video_player/video_player_android/CHANGELOG.md
+++ b/packages/video_player/video_player_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.4.6
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 2.4.5
 
 * Adds a namespace for compatibility with AGP 8.0.
diff --git a/packages/video_player/video_player_android/android/build.gradle b/packages/video_player/video_player_android/android/build.gradle
index 0facb26..613b8ed 100644
--- a/packages/video_player/video_player_android/android/build.gradle
+++ b/packages/video_player/video_player_android/android/build.gradle
@@ -27,7 +27,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.videoplayer'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.videoplayer'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/video_player/video_player_android/pubspec.yaml b/packages/video_player/video_player_android/pubspec.yaml
index 7940829..dc195b4 100644
--- a/packages/video_player/video_player_android/pubspec.yaml
+++ b/packages/video_player/video_player_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Android implementation of the video_player plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/video_player/video_player_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+video_player%22
-version: 2.4.5
+version: 2.4.6
 
 environment:
   sdk: ">=2.18.0 <4.0.0"
diff --git a/packages/webview_flutter/webview_flutter_android/CHANGELOG.md b/packages/webview_flutter/webview_flutter_android/CHANGELOG.md
index 137f882..02edbab 100644
--- a/packages/webview_flutter/webview_flutter_android/CHANGELOG.md
+++ b/packages/webview_flutter/webview_flutter_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 3.6.2
+
+* Fixes compatibility with AGP versions older than 4.2.
+
 ## 3.6.1
 
 * Adds a namespace for compatibility with AGP 8.0.
diff --git a/packages/webview_flutter/webview_flutter_android/android/build.gradle b/packages/webview_flutter/webview_flutter_android/android/build.gradle
index 13eff1a..f3da461 100644
--- a/packages/webview_flutter/webview_flutter_android/android/build.gradle
+++ b/packages/webview_flutter/webview_flutter_android/android/build.gradle
@@ -22,7 +22,10 @@
 apply plugin: 'com.android.library'
 
 android {
-    namespace 'io.flutter.plugins.webviewflutter'
+    // Conditional for compatibility with AGP <4.2.
+    if (project.android.hasProperty("namespace")) {
+        namespace 'io.flutter.plugins.webviewflutter'
+    }
     compileSdkVersion 33
 
     defaultConfig {
diff --git a/packages/webview_flutter/webview_flutter_android/pubspec.yaml b/packages/webview_flutter/webview_flutter_android/pubspec.yaml
index 94105ff..8196b3b 100644
--- a/packages/webview_flutter/webview_flutter_android/pubspec.yaml
+++ b/packages/webview_flutter/webview_flutter_android/pubspec.yaml
@@ -2,7 +2,7 @@
 description: A Flutter plugin that provides a WebView widget on Android.
 repository: https://github.com/flutter/packages/tree/main/packages/webview_flutter/webview_flutter_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+webview%22
-version: 3.6.1
+version: 3.6.2
 
 environment:
   sdk: ">=2.18.0 <4.0.0"
diff --git a/script/tool/lib/src/gradle_check_command.dart b/script/tool/lib/src/gradle_check_command.dart
index a3a1e76..09a9d7a 100644
--- a/script/tool/lib/src/gradle_check_command.dart
+++ b/script/tool/lib/src/gradle_check_command.dart
@@ -153,13 +153,32 @@
         RegExp('^\\s*namespace\\s+[\'"](.*?)[\'"]', multiLine: true);
     final RegExpMatch? namespaceMatch =
         namespaceRegex.firstMatch(gradleContents);
+
+    // For plugins, make sure the namespace is conditionalized so that it
+    // doesn't break client apps using AGP 4.1 and earlier (which don't have
+    // a namespace property, and will fail to build if it's set).
+    const String namespaceConditional =
+        'if (project.android.hasProperty("namespace"))';
+    String exampleSetNamespace = "namespace 'dev.flutter.foo'";
+    if (!isExample) {
+      exampleSetNamespace = '''
+$namespaceConditional {
+    $exampleSetNamespace
+}''';
+    }
+    // Wrap the namespace command in an `android` block, adding the indentation
+    // to make it line up correctly.
+    final String exampleAndroidNamespaceBlock = '''
+    android {
+        ${exampleSetNamespace.split('\n').join('\n        ')}
+    }
+''';
+
     if (namespaceMatch == null) {
-      const String errorMessage = '''
+      final String errorMessage = '''
 build.gradle must set a "namespace":
 
-    android {
-        namespace 'dev.flutter.foo'
-    }
+$exampleAndroidNamespaceBlock
 
 The value must match the "package" attribute in AndroidManifest.xml, if one is
 present. For more information, see:
@@ -170,6 +189,18 @@
           '$indentation${errorMessage.split('\n').join('\n$indentation')}');
       return false;
     } else {
+      if (!isExample && !gradleContents.contains(namespaceConditional)) {
+        final String errorMessage = '''
+build.gradle for a plugin must conditionalize "namespace":
+
+$exampleAndroidNamespaceBlock
+''';
+
+        printError(
+            '$indentation${errorMessage.split('\n').join('\n$indentation')}');
+        return false;
+      }
+
       return _validateNamespaceMatchesManifest(package,
           isExample: isExample, namespace: namespaceMatch.group(1)!);
     }
diff --git a/script/tool/test/gradle_check_command_test.dart b/script/tool/test/gradle_check_command_test.dart
index e72d3f8..68581c7 100644
--- a/script/tool/test/gradle_check_command_test.dart
+++ b/script/tool/test/gradle_check_command_test.dart
@@ -41,6 +41,7 @@
     bool includeTargetCompat = false,
     bool commentSourceLanguage = false,
     bool includeNamespace = true,
+    bool conditionalizeNamespace = true,
     bool commentNamespace = false,
     bool warningsConfigured = true,
   }) {
@@ -69,8 +70,15 @@
         '${commentSourceLanguage ? '// ' : ''}sourceCompatibility JavaVersion.VERSION_1_8';
     final String targetCompat =
         '${commentSourceLanguage ? '// ' : ''}targetCompatibility JavaVersion.VERSION_1_8';
-    final String namespace =
-        "${commentNamespace ? '// ' : ''}namespace '$_defaultFakeNamespace'";
+    String namespace =
+        "    ${commentNamespace ? '// ' : ''}namespace '$_defaultFakeNamespace'";
+    if (conditionalizeNamespace) {
+      namespace = '''
+    if (project.android.hasProperty("namespace")) {
+    $namespace
+    }
+''';
+    }
 
     buildGradle.writeAsStringSync('''
 group 'dev.flutter.plugins.fake'
@@ -87,7 +95,7 @@
 
 ${includeLanguageVersion ? javaSection : ''}
 android {
-    ${includeNamespace ? namespace : ''}
+${includeNamespace ? namespace : ''}
     compileSdkVersion 33
 
     defaultConfig {
@@ -435,6 +443,28 @@
     );
   });
 
+  test('fails when plugin namespace is not conditional', () async {
+    final RepositoryPackage package =
+        createFakePlugin('a_plugin', packagesDir, examples: <String>[]);
+    writeFakePluginBuildGradle(package,
+        includeLanguageVersion: true, conditionalizeNamespace: false);
+    writeFakeManifest(package);
+
+    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('build.gradle for a plugin must conditionalize "namespace"'),
+      ]),
+    );
+  });
+
   test('fails when namespace is missing', () async {
     final RepositoryPackage package =
         createFakePlugin('a_plugin', packagesDir, examples: <String>[]);