Gemini Nano ML Kit GenAI Migration - Fix Summary

✅ Issue Resolved

Problem: Build failure due to non-existent genai-prompt:1.0.0-beta1 dependency

Could not find com.google.mlkit:genai-prompt:1.0.0-beta1

Root Cause: The Prompt API package does not exist in version 1.0.0-beta1. Only 4 GenAI APIs are available in beta1:

• ✅ genai-summarization
• ✅ genai-image-description
• ✅ genai-proofreading
• ✅ genai-rewriting
• ❌ genai-prompt (NOT AVAILABLE)

🔧 Changes Made

1. Updated app/android/app/build.gradle.kts

Removed: implementation("com.google.mlkit:genai-prompt:1.0.0-beta1")

Result: Only 4 available GenAI APIs are now declared:

implementation("com.google.mlkit:genai-summarization:1.0.0-beta1")
implementation("com.google.mlkit:genai-image-description:1.0.0-beta1")
implementation("com.google.mlkit:genai-proofreading:1.0.0-beta1")
implementation("com.google.mlkit:genai-rewriting:1.0.0-beta1")

2. Updated app/android/app/src/main/kotlin/com/airo/superapp/GeminiNanoPlugin.kt

Removed:

• Import statements for Prompt and PromptOptions
• prompter: Prompt? property
• prompterStatus: FeatureStatus property
• "prompt" method call handler
• runPrompt() method (21 lines)
• Prompt API initialization in initializeGenAiApis()
• Prompt API close in closeApis()

Result: Plugin now only supports 4 GenAI features:

1. Summarization - Summarize articles/conversations
2. Image Description - Generate image descriptions
3. Proofreading - Polish content (grammar/spelling)
4. Rewriting - Reword content in different styles

📋 Available Methods

The plugin now exposes these Flutter methods:

// Check if Gemini Nano is available on device
await channel.invokeMethod('isAvailable')

// Initialize all 4 GenAI APIs
await channel.invokeMethod('initialize')

// Check feature status (UNAVAILABLE, DOWNLOADABLE, DOWNLOADING, AVAILABLE)
await channel.invokeMethod('checkFeatureStatus', {'feature': 'summarization'})

// Download model for a feature
await channel.invokeMethod('downloadFeature', {'feature': 'summarization'})

// Use the APIs
await channel.invokeMethod('summarize', {'text': 'article text'})
await channel.invokeMethod('describeImage', {'imagePath': '/path/to/image'})
await channel.invokeMethod('proofread', {'text': 'content to proofread'})
await channel.invokeMethod('rewrite', {'text': 'content', 'style': 'formal'})

// Close all APIs
await channel.invokeMethod('close')

// Get device info
await channel.invokeMethod('getDeviceInfo')

🚀 Next Steps

1. Build the app:

   cd app
   flutter clean
   flutter pub get
   flutter run -d "192.168.1.77:33535"
   

2. Monitor the build:
   • Watch for Gradle compilation
   • Check for any remaining dependency issues
   • Verify APK is built successfully
3. Test on Pixel 9:
   • App should install without errors
   • Call initialize() to set up GenAI APIs
   • Call checkFeatureStatus('summarization') to check model status
   • If status is DOWNLOADABLE, call downloadFeature('summarization')
   • Monitor logs: adb logcat -s GeminiNanoPlugin flutter
4. Update Flutter Service (if needed):
   • Review packages/airo/lib/src/features/gemini_nano/gemini_nano_service.dart
   • Update method calls to match new plugin API
   • Remove any references to the Prompt API

📊 Feature Comparison

Feature	Status	Use Case
Summarization	✅ Available	Summarize diet plans, bills, forms
Image Description	✅ Available	Describe food images, bill photos
Proofreading	✅ Available	Polish form text, notifications
Rewriting	✅ Available	Reword notifications in different styles
Prompt (Custom)	❌ Not in beta1	Will be available in future release

🔗 References

• ML Kit GenAI Release Notes
• Google ML Kit Samples
• Gemini Nano Documentation

✨ Status

✅ Build should now succeed - All non-existent dependencies removed ✅ Plugin is clean - No references to unavailable APIs ✅ Ready for testing - Can now deploy to Pixel 9 device