firebase · emilypgoogle · Jul 9, 2025 · Jul 8, 2025 · Jul 8, 2025 · Jul 8, 2025
diff --git a/build.gradle.kts b/build.gradle.kts
@@ -33,7 +33,7 @@ extra["targetSdkVersion"] = 34
 
 extra["compileSdkVersion"] = 34
 
-extra["minSdkVersion"] = 21
+extra["minSdkVersion"] = 23
 
 firebaseContinuousIntegration {
   ignorePaths =

diff --git a/firebase-ai/firebase-ai.gradle.kts b/firebase-ai/firebase-ai.gradle.kts
@@ -39,7 +39,7 @@ android {
   namespace = "com.google.firebase.ai"
   compileSdk = 34
   defaultConfig {
-    minSdk = 21
+    minSdk = rootProject.extra["minSdkVersion"] as Int
     consumerProguardFiles("consumer-rules.pro")
     multiDexEnabled = true
     testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"

diff --git a/firebase-common/src/androidTest/java/com/google/firebase/FirebaseAppTest.java b/firebase-common/src/androidTest/java/com/google/firebase/FirebaseAppTest.java
@@ -143,7 +143,7 @@ public void testInitializeApp_shouldPublishVersionForFirebaseCommon() {
     // After sorting the user agents are expected to be {"fire-android/", "fire-auth/x.y.z",
     // "fire-core/x.y.z", "test-component/1.2.3"}
     assertThat(actualUserAgent[0]).contains("android-installer");
-    assertThat(actualUserAgent[1]).contains("android-min-sdk/21");
+    assertThat(actualUserAgent[1]).contains("android-min-sdk/23");
     assertThat(actualUserAgent[2]).contains("android-platform");
     assertThat(actualUserAgent[3]).contains("android-target-sdk");
     assertThat(actualUserAgent[4]).contains("device-brand");

diff --git a/firebase-config/firebase-config.gradle.kts b/firebase-config/firebase-config.gradle.kts
@@ -37,7 +37,7 @@ android {
   compileSdk = targetSdkVersion
 
   defaultConfig {
-    minSdk = 21
+    minSdk = rootProject.extra["minSdkVersion"] as Int
     multiDexEnabled = true
     testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
   }

diff --git a/firebase-dataconnect/demo/build.gradle.kts b/firebase-dataconnect/demo/build.gradle.kts
@@ -72,7 +72,7 @@ android {
   namespace = "com.google.firebase.dataconnect.minimaldemo"
   compileSdk = 35
   defaultConfig {
-    minSdk = 21
+    minSdk = 23
     targetSdk = 35
     versionCode = 1
     versionName = "1.0"

diff --git a/...nect/testutil/src/main/kotlin/com/google/firebase/dataconnect/testutil/FactoryTestRule.kt b/...nect/testutil/src/main/kotlin/com/google/firebase/dataconnect/testutil/FactoryTestRule.kt
@@ -48,7 +48,7 @@ abstract class FactoryTestRule<T, P> : ExternalResource() {
   override fun after() {
     active.set(false)
     while (instances.isNotEmpty()) {
-      destroyInstance(instances.removeLast())
+      destroyInstance(instances.removeAt(instances.lastIndex))
     }
   }
 

diff --git a/firebase-firestore/src/test/java/com/google/firebase/firestore/spec/MemorySpecTest.java b/firebase-firestore/src/test/java/com/google/firebase/firestore/spec/MemorySpecTest.java
@@ -28,7 +28,7 @@
 import org.robolectric.annotation.Config;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = 21, manifest = Config.NONE)
+@Config(sdk = 23, manifest = Config.NONE)
 public class MemorySpecTest extends SpecTestCase {
 
   private static final String DURABLE_PERSISTENCE = "durable-persistence";

diff --git a/...st/java/com/google/firebase/inappmessaging/display/FirebaseInAppMessagingDisplayTest.java b/...st/java/com/google/firebase/inappmessaging/display/FirebaseInAppMessagingDisplayTest.java
@@ -94,7 +94,7 @@
 import org.robolectric.shadows.ShadowPackageManager;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = 21, qualifiers = "port")
+@Config(sdk = 23, qualifiers = "port")
 @LooperMode(LooperMode.Mode.LEGACY)
 public class FirebaseInAppMessagingDisplayTest {
 

diff --git a/...display/src/test/java/com/google/firebase/inappmessaging/display/OnSwipeListenerTest.java b/...display/src/test/java/com/google/firebase/inappmessaging/display/OnSwipeListenerTest.java
@@ -25,7 +25,7 @@
 import org.robolectric.annotation.Config;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = 21)
+@Config(sdk = 23)
 public class OnSwipeListenerTest {
   private OnSwipeUpListener onSwipeListener;
   private boolean sweptUp;

diff --git a/...rc/test/java/com/google/firebase/inappmessaging/display/internal/FiamImageLoaderTest.java b/...rc/test/java/com/google/firebase/inappmessaging/display/internal/FiamImageLoaderTest.java
@@ -36,7 +36,7 @@
 import org.robolectric.annotation.Config;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = 21, qualifiers = "por")
+@Config(sdk = 23, qualifiers = "por")
 public class FiamImageLoaderTest {
   private static final String IMAGE_URL = "https://www.imgur.com";
   @Mock private RequestManager glideRequestManager;

diff --git a/.../test/java/com/google/firebase/inappmessaging/display/internal/FiamWindowManagerTest.java b/.../test/java/com/google/firebase/inappmessaging/display/internal/FiamWindowManagerTest.java
@@ -42,7 +42,7 @@
 import org.robolectric.annotation.Config;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = 21, qualifiers = "port")
+@Config(sdk = 23, qualifiers = "port")
 public class FiamWindowManagerTest {
   private static final Context appContext = ApplicationProvider.getApplicationContext();
   private static final int WINDOW_GRAVITY = Gravity.CENTER;

diff --git a/firebase-messaging/src/test/AndroidManifest.xml b/firebase-messaging/src/test/AndroidManifest.xml
@@ -18,7 +18,7 @@
           android:versionCode="1"
           android:versionName="1">
 
-    <!--<uses-sdk android:minSdkVersion="21"/>-->
+    <!--<uses-sdk android:minSdkVersion="23"/>-->
     <application>
         <service android:exported="false"
             android:name="com.google.firebase.components.ComponentDiscoveryService">

diff --git a/...se-messaging/src/test/java/com/google/firebase/messaging/DisplayNotificationRoboTest.java b/...se-messaging/src/test/java/com/google/firebase/messaging/DisplayNotificationRoboTest.java
@@ -475,7 +475,7 @@ public void testClickActionAndLink() {
 
   /** Test that a valid notification with color is displayed. */
   @Test
-  @Config(sdk = Build.VERSION_CODES.LOLLIPOP)
+  @Config(sdk = Build.VERSION_CODES.M)
   public void testColor() {
     final String color = "#123456";
     Bundle data = new Bundle();
@@ -489,7 +489,7 @@ public void testColor() {
   }
 
   @Test
-  @Config(sdk = Build.VERSION_CODES.LOLLIPOP)
+  @Config(sdk = Build.VERSION_CODES.M)
   public void testNoColor() {
     Bundle data = new Bundle();
     data.putString(KEY_TITLE, "title 123");
@@ -503,7 +503,7 @@ public void testNoColor() {
 
   /** Test that the user can choose the default color via AndroidManifest metadata. */
   @Test
-  @Config(sdk = Build.VERSION_CODES.LOLLIPOP)
+  @Config(sdk = Build.VERSION_CODES.M)
   public void testColorFromMetadata() {
     Bundle metadata = new Bundle();
     metadata.putInt(

diff --git a/firebase-messaging/src/test/resources/robolectric.properties b/firebase-messaging/src/test/resources/robolectric.properties
@@ -1 +1 @@
-sdk=21
+sdk=23
diff --git a/firebase-sessions/src/test/kotlin/com/google/firebase/sessions/testing/FakeFirebaseApp.kt b/firebase-sessions/src/test/kotlin/com/google/firebase/sessions/testing/FakeFirebaseApp.kt
@@ -43,7 +43,7 @@ internal class FakeFirebaseApp(
     val packageInfo = PackageInfoBuilder.newBuilder().setPackageName(context.packageName).build()
     packageInfo.versionName = MOCK_APP_VERSION
 
-    metadata?.let { packageInfo.applicationInfo.metaData = it }
+    metadata?.let { packageInfo.applicationInfo!!.metaData = it }
     shadowPackageManager.installPackage(packageInfo)
 
     val activityManager = context.getSystemService(Context.ACTIVITY_SERVICE) as ActivityManager

diff --git a/firebase-storage/src/test/java/com/google/firebase/storage/DeleteTest.java b/firebase-storage/src/test/java/com/google/firebase/storage/DeleteTest.java
@@ -32,7 +32,7 @@
 
 /** Tests for {@link FirebaseStorage}. */
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = Build.VERSION_CODES.LOLLIPOP_MR1)
+@Config(sdk = Build.VERSION_CODES.M)
 public class DeleteTest {
 
   @Rule public RetryRule retryRule = new RetryRule(3);

diff --git a/firebase-storage/src/test/java/com/google/firebase/storage/ListTest.java b/firebase-storage/src/test/java/com/google/firebase/storage/ListTest.java
@@ -34,7 +34,7 @@
 
 /** Tests for {@link FirebaseStorage}. */
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = Build.VERSION_CODES.LOLLIPOP_MR1)
+@Config(sdk = Build.VERSION_CODES.M)
 public class ListTest {
 
   @Rule public RetryRule retryRule = new RetryRule(3);

diff --git a/firebase-storage/src/test/java/com/google/firebase/storage/MetadataTest.java b/firebase-storage/src/test/java/com/google/firebase/storage/MetadataTest.java
@@ -32,7 +32,7 @@
 
 /** Tests for {@link FirebaseStorage}. */
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = Build.VERSION_CODES.LOLLIPOP_MR1)
+@Config(sdk = Build.VERSION_CODES.M)
 public class MetadataTest {
 
   @Rule public RetryRule retryRule = new RetryRule(3);

diff --git a/firebase-storage/src/test/java/com/google/firebase/storage/NetworkRequestTest.java b/firebase-storage/src/test/java/com/google/firebase/storage/NetworkRequestTest.java
@@ -30,7 +30,7 @@
 import org.robolectric.annotation.Config;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = Build.VERSION_CODES.LOLLIPOP_MR1)
+@Config(sdk = Build.VERSION_CODES.M)
 public class NetworkRequestTest {
 
   private FirebaseApp app;

diff --git a/firebase-storage/src/test/java/com/google/firebase/storage/PathingTest.java b/firebase-storage/src/test/java/com/google/firebase/storage/PathingTest.java
@@ -36,7 +36,7 @@
 
 /** Tests for {@link FirebaseStorage}. */
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = Build.VERSION_CODES.LOLLIPOP_MR1)
+@Config(sdk = Build.VERSION_CODES.M)
 public class PathingTest {
 
   @Rule public RetryRule retryRule = new RetryRule(3);

diff --git a/firebase-storage/src/test/java/com/google/firebase/storage/UploadTest.java b/firebase-storage/src/test/java/com/google/firebase/storage/UploadTest.java
@@ -62,7 +62,7 @@
 /** Tests for {@link FirebaseStorage}. */
 @SuppressWarnings("ConstantConditions")
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = Build.VERSION_CODES.LOLLIPOP_MR1)
+@Config(sdk = Build.VERSION_CODES.M)
 public class UploadTest {
 
   private static final String TEST_ASSET_ROOT = "assets/";

diff --git a/...e-storage/src/test/java/com/google/firebase/storage/internal/StorageReferenceUriTest.java b/...e-storage/src/test/java/com/google/firebase/storage/internal/StorageReferenceUriTest.java
@@ -24,7 +24,7 @@
 import org.robolectric.annotation.Config;
 
 @RunWith(RobolectricTestRunner.class)
-@Config(sdk = Build.VERSION_CODES.LOLLIPOP_MR1)
+@Config(sdk = Build.VERSION_CODES.M)
 public class StorageReferenceUriTest {
 
   private static final EmulatedServiceSettings EMULATOR_SETTINGS =

diff --git a/firebase-vertexai/firebase-vertexai.gradle.kts b/firebase-vertexai/firebase-vertexai.gradle.kts
@@ -39,7 +39,7 @@ android {
   namespace = "com.google.firebase.vertexai"
   compileSdk = 34
   defaultConfig {
-    minSdk = 21
+    minSdk = rootProject.extra["minSdkVersion"] as Int
     consumerProguardFiles("consumer-rules.pro")
     multiDexEnabled = true
     testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"

diff --git a/...gle/android/datatransport/runtime/scheduling/jobscheduling/AlarmManagerSchedulerTest.java b/...gle/android/datatransport/runtime/scheduling/jobscheduling/AlarmManagerSchedulerTest.java
@@ -14,7 +14,7 @@
 
 package com.google.android.datatransport.runtime.scheduling.jobscheduling;
 
-import static android.os.Build.VERSION_CODES.LOLLIPOP;
+import static android.os.Build.VERSION_CODES.M;
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.AdditionalMatchers.gt;
 import static org.mockito.ArgumentMatchers.any;
@@ -47,7 +47,7 @@
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
 
-@Config(sdk = {LOLLIPOP})
+@Config(sdk = {M})
 @RunWith(RobolectricTestRunner.class)
 public class AlarmManagerSchedulerTest {
   private static final long TWENTY_FOUR_HOURS = 24 * 60 * 60 * 1000;

diff --git a/...m/google/android/datatransport/runtime/scheduling/jobscheduling/JobInfoSchedulerTest.java b/...m/google/android/datatransport/runtime/scheduling/jobscheduling/JobInfoSchedulerTest.java
@@ -14,7 +14,7 @@
 
 package com.google.android.datatransport.runtime.scheduling.jobscheduling;
 
-import static android.os.Build.VERSION_CODES.LOLLIPOP;
+import static android.os.Build.VERSION_CODES.M;
 import static com.google.common.truth.Truth.assertThat;
 
 import android.app.job.JobInfo;
@@ -37,7 +37,7 @@
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
 
-@Config(sdk = {LOLLIPOP})
+@Config(sdk = {M})
 @RunWith(RobolectricTestRunner.class)
 public class JobInfoSchedulerTest {
   private static final long TWENTY_FOUR_HOURS = 24 * 60 * 60 * 1000;

diff --git a/.../java/com/google/android/datatransport/runtime/scheduling/jobscheduling/UploaderTest.java b/.../java/com/google/android/datatransport/runtime/scheduling/jobscheduling/UploaderTest.java
@@ -14,7 +14,7 @@
 
 package com.google.android.datatransport.runtime.scheduling.jobscheduling;
 
-import static android.os.Build.VERSION_CODES.LOLLIPOP;
+import static android.os.Build.VERSION_CODES.M;
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.argThat;
@@ -52,7 +52,7 @@
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
 
-@Config(sdk = {LOLLIPOP})
+@Config(sdk = {M})
 @RunWith(RobolectricTestRunner.class)
 public class UploaderTest {
   private static final SynchronizationGuard guard =