android-interop-testing: Replace deprecated classes

[shivaspeaks]

No description provided.

[gemini-code-assist]

Summary of Changes

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This pull request primarily focuses on updating the Android compatibility and dependencies within the gRPC-Java project. It advances the minimum supported Android SDK version to Marshmallow (API 23), allowing for the removal of older compatibility layers like MultiDex. Additionally, it updates internal gRPC versions, modernizes Android testing APIs, refines DNS resolution behavior on Android, and improves load balancer connection logic, ensuring better alignment with current Android development practices and gRPC internal mechanisms.

Highlights

• gRPC Version Update: Upgraded the gRPC version to 1.81.0-SNAPSHOT across the entire project, affecting build files, generated code, and various examples.
• Android API Level Bump: Increased the minimum Android SDK version (minSdkVersion) from 20/21/22 to 23 (Marshmallow) in all relevant Android modules and examples, enhancing compatibility with modern Android features.
• MultiDex Removal: Eliminated MultiDex support configurations and dependencies, as minSdkVersion 23 natively supports multi-dexing, simplifying the build process.
• Android Testing API Modernization: Migrated Android testing utilities in UdsChannelInteropTest.java from deprecated InstrumentationRegistry and ActivityTestRule to their modern androidx.test.platform.app.InstrumentationRegistry and ActivityScenarioRule equivalents.
• DNS Resolution on Android: Adjusted DnsNameResolver behavior on Android to utilize a fixed DNS cache TTL instead of ignoring it, along with updated documentation and tests.
• Load Balancer Connection Logic: Enhanced PickFirstLeafLoadBalancer to prevent redundant connection requests when a reconnection task is already active, improving efficiency.
• Cronet Network Binding Simplification: Updated CronetChannelBuilder by removing an unnecessary Android SDK version check for network binding, aligning with the new minSdkVersion.
• Name Resolver URI Handling: Refactored SecretGrpclbNameResolverProvider to support the new Uri class and introduced parameterized tests for robust URI path segment validation.

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Changelog

• MODULE.bazel
  • Updated the grpc-java module version to 1.81.0-SNAPSHOT.
• README.md
  • Updated the minimum Android SDK version mentioned in the supported platforms section to 23.
• android-interop-testing/build.gradle
  • Increased minSdkVersion to 23, removed multiDexEnabled flag, and added grpc-api as an implementation dependency.
• android-interop-testing/src/androidTest/AndroidManifest.xml
  • Removed the explicit android.support.multidex.MultiDexApplication declaration.
• android-interop-testing/src/androidTest/java/io/grpc/android/integrationtest/UdsChannelInteropTest.java
  • Replaced deprecated InstrumentationRegistry and ActivityTestRule with androidx.test.platform.app.InstrumentationRegistry and ActivityScenarioRule.
• android-interop-testing/src/main/AndroidManifest.xml
  • Removed the explicit androidx.multidex.MultiDexApplication declaration.
• android/build.gradle
  • Increased minSdkVersion to 23.
• binder/build.gradle
  • Increased minSdkVersion to 23 and removed multiDexEnabled flag.
• build.gradle
  • Updated the global grpcVersion to 1.81.0-SNAPSHOT.
• compiler/src/test/golden/TestDeprecatedService.java.txt
  • Updated the generated gRPC proto compiler version to 1.81.0-SNAPSHOT.
• compiler/src/test/golden/TestService.java.txt
  • Updated the generated gRPC proto compiler version to 1.81.0-SNAPSHOT.
• core/src/main/java/io/grpc/internal/DnsNameResolver.java
  • Modified the DNS cache TTL behavior for Android to use a fixed value instead of ignoring it, and updated comments.
• core/src/main/java/io/grpc/internal/GrpcUtil.java
  • Updated the IMPLEMENTATION_VERSION constant to 1.81.0-SNAPSHOT.
• core/src/main/java/io/grpc/internal/PickFirstLeafLoadBalancer.java
  • Added a condition to prevent requestConnection calls when a reconnectTask is already active.
• core/src/test/java/io/grpc/internal/DnsNameResolverTest.java
  • Removed Android-specific resolveNeverCache tests and updated resolveDefaultValue to be parameterized for Android.
• core/src/test/java/io/grpc/internal/PickFirstLeafLoadBalancerTest.java
  • Added a conditional check for serializeRetries before verifying subchannel start.
• cronet/build.gradle
  • Increased minSdkVersion to 23.
• cronet/src/main/java/io/grpc/cronet/CronetChannelBuilder.java
  • Removed the Build.VERSION.SDK_INT check for bindToNetwork as minSdkVersion is now 23.
• examples/MODULE.bazel
  • Updated the grpc-java module version to 1.81.0-SNAPSHOT.
• examples/android/clientcache/app/build.gradle
  • Increased minSdkVersion to 23, removed multiDexEnabled, and updated gRPC dependency versions.
• examples/android/helloworld/app/build.gradle
  • Increased minSdkVersion to 23 and updated gRPC dependency versions.
• examples/android/routeguide/app/build.gradle
  • Increased minSdkVersion to 23 and updated gRPC dependency versions.
• examples/android/strictmode/app/build.gradle
  • Updated gRPC dependency versions.
• examples/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-alts/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-debug/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-debug/pom.xml
  • Updated the grpc.version and project version to 1.81.0-SNAPSHOT.
• examples/example-dualstack/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-dualstack/pom.xml
  • Updated the grpc.version and project version to 1.81.0-SNAPSHOT.
• examples/example-gauth/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-gauth/pom.xml
  • Updated the grpc.version and project version to 1.81.0-SNAPSHOT.
• examples/example-gcp-csm-observability/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-gcp-observability/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-hostname/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-hostname/pom.xml
  • Updated the grpc.version and project version to 1.81.0-SNAPSHOT.
• examples/example-jwt-auth/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-jwt-auth/pom.xml
  • Updated the grpc.version and project version to 1.81.0-SNAPSHOT.
• examples/example-oauth/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-oauth/pom.xml
  • Updated the grpc.version and project version to 1.81.0-SNAPSHOT.
• examples/example-opentelemetry/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-orca/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-reflection/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-servlet/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-tls/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/example-tls/pom.xml
  • Updated the grpc.version and project version to 1.81.0-SNAPSHOT.
• examples/example-xds/build.gradle
  • Updated the grpcVersion variable to 1.81.0-SNAPSHOT.
• examples/pom.xml
  • Updated the grpc.version and project version to 1.81.0-SNAPSHOT.
• grpclb/src/main/java/io/grpc/grpclb/SecretGrpclbNameResolverProvider.java
  • Added a new newNameResolver method that accepts io.grpc.Uri and refactored URI parsing logic.
• grpclb/src/test/java/io/grpc/grpclb/SecretGrpclbNameResolverProviderTest.java
  • Converted the test class to parameterized, added new tests for io.grpc.Uri handling, and updated existing URI validation tests.

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[gemini-code-assist]

Code Review

This pull request correctly replaces deprecated Android testing classes (ActivityTestRule, InstrumentationRegistry) with their modern equivalents (ActivityScenarioRule, androidx.test.platform.app.InstrumentationRegistry). The changes are straightforward and improve the maintainability of the test code by aligning with current Android testing best practices. The implementation is correct, and I have no further suggestions.