Add safer intents sample

[yrezgui]

[yrezgui]

/gemini summary

[gemini-code-assist[bot]]

Summary of Changes

This pull request adds a new sample, SaferIntents, to demonstrate the importance of handling intents correctly to avoid potential crashes. The sample includes two buttons: one that sends a NULL intent (which is now handled with exception handling to prevent crashes) and another that sends a regular intent. The PR also updates the Gradle configuration, including upgrading the Android Gradle Plugin (AGP) and Gradle version, and adjusts the minimum SDK version for the app.

Highlights

• New Sample: SaferIntents: Introduces a new sample demonstrating how to handle intents safely to prevent ActivityNotFoundException crashes when a NULL intent is sent.
• Gradle Updates: Updates the Gradle version to 8.6 and the Android Gradle Plugin (AGP) to 8.4.1. Also, the minimum SDK version is increased to 24.
• Workflow Updates: Updates the GitHub Actions workflow to use actions/checkout@v4 and actions/upload-artifact@v4 and targets API levels 31 and 34 for testing.

Changelog

Click here to see the changelog

• .github/workflows/build.yml
  • Updates actions/checkout to v4 (line 19).
  • Updates actions/upload-artifact to v4 (lines 49, 56, and 97).
  • Changes runs-on to macos-latest-large (line 63).
  • Updates the API levels tested to 31 and 34 (line 67).
• app/build.gradle.kts
  • Increases minSdk to 24 (line 37).
• gradle/libs.versions.toml
  • Updates agp to version 8.4.1 (line 21).
  • Updates Gradle version to 8.6 (line 20).
• gradle/wrapper/gradle-wrapper.properties
  • Updates distributionUrl to Gradle 8.6 (line 20).
• samples/README.md
  • Adds a link to the new SaferIntents sample (line 93).
• samples/security/intents/README.md
  • Creates a README file for the SaferIntents sample, explaining its purpose and functionality.
• samples/security/intents/build.gradle.kts
  • Creates a build.gradle.kts file for the SaferIntents sample, including the plugin and namespace.
• samples/security/intents/src/main/AndroidManifest.xml
  • Creates an AndroidManifest.xml file for the SaferIntents sample, declaring the SaferIntentsActivity and intent filter.
• samples/security/intents/src/main/java/com/example/platform/security/intents/SaferIntents.kt
  • Creates the SaferIntents composable function, which includes buttons to send a NULL intent (with exception handling) and a regular intent.
• samples/security/intents/src/main/java/com/example/platform/security/intents/SaferIntentsActivity.kt
  • Creates the SaferIntentsActivity, which displays a simple "Hello Android!" screen.

Activity

• yrezgui requested a summary of the pull request using the command /gemini summary.
• yrezgui suggested using RequiresApi annotation instead of upgrading the minSdk version.
• yrezgui suggested inlining the HelloAndroidScreen function directly inside the Surface composable.
• yrezgui asked for clarification on whether the activity can be launched with a NULL intent without the intent action filter, and if so, to explain it in the comments.