NewsAI - Agentic News Summary App

NewsAI is a sample Android application demonstrating how to build a voice-activated, AI-agentic workflow using the MobileGraph SDK. It allows users to ask for news in a specific genre and provides a summarized, text-to-speech (TTS) readout of the latest articles.

Overview

Traditional apps rely on hardcoded logic. NewsAI uses an Agentic Workflow, where autonomous agents collaborate to understand user intent, fetch real-time data, and process it into a user-friendly format.

Key Features

• Voice Interaction: Leverages Android's Speech-to-Text and Text-to-Speech.
• AI-Driven Orchestration: Uses MobileGraph to manage a multi-step agent workflow.
• Dynamic Summarization: Summarizes multiple news articles using LLMs (OpenAI).
• Personalized Experience: Tailors news based on natural language queries (e.g., "Tell me about tech news").

Architecture & MobileGraph Workflow

The heart of the application is the NewsWorkflowBuilder, which defines a state-aware graph of agents and nodes.

1. The Workflow Graph

The app uses a stateGraph to orchestrate the following steps:

1. Genre Identification (Agent): An LLM-powered agent that parses the user's query to identify the requested news category (e.g., "Technology", "Sports").
2. News Fetcher (Graph Node): A functional node that calls the NewsTool to fetch real-back live news articles via a News API.
3. Summarizer (Agent): An agent that iterates through the fetched articles and generates concise, TTS-friendly summaries.
4. State Management: NewsState holds the conversation variables (genre, articles, summaries) and is updated immutably as it passes through the graph.

2. MobileGraph Components Used

• MobileGraph: The entry point for SDK initialization and model configuration.
• AgentNode: Wraps an Agent to participate in the graph execution.
• DefaultExecutionEngine & DefaultAgentRuntime: The engines that navigate the graph and handle LLM interactions.
• StateGraph: Defines the edges and conditional transitions between nodes.

How to Run

1. API Keys:
   • Add your API keys to local.properties in the root directory:

     OPENAI_API_KEY=your_openai_key_here
     NEWS_API_KEY=your_news_api_key_here

2. Build: Run ./gradlew assembleDebug or use Android Studio. The keys are automatically injected into the app via BuildConfig.
3. Use: Tap the microphone icon, say a news category (e.g., "Business news"), and listen as the AI agents fetch and summarize the latest updates for you.

Technologies

• Language: Kotlin
• UI: Jetpack Compose
• AI Framework: MobileGraph SDK
• Model: OpenAI GPT-4o (or configured default)
• TTS: Android Text-to-Speech (Customized for Indian Male Voice)

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