Nutrition Care Android App using AI/ML

Project Objective

Deliver a secure, fast, and accurate nutrition care android app that enables users to search food items and receive rich nutrient data (calories, protein, fat, carbs, vitamins, minerals), while an AI/ML-powered NLP chatbot gives personalized diet guidance and safety precautions. The app stores search history, favorites, and preferences using Firebase.

How It Works

1. Food Search: User types a product/fruit/food name. App fetches nutrients (from local JSON/API) and caches in Firebase/Local DB for speed.
2. AI Advice: NLP chatbot analyzes the item and user’s basic profile (e.g., goals) to advise when to eat, portion size, and health caveats.
3. Video Learning: Video tab shows curated playlists on balanced diet, micronutrients, and healthy habits.
4. Offline-first: Recent lookups and chatbot FAQs are available offline; syncing happens automatically when online.

Project Modules

Firebase Realtime Database Structure (Example)

{
  "foods": {
    "banana": {
      "name": "Banana",
      "macros": {"calories": 105, "protein": 1.3, "fat": 0.4, "carbs": 27},
      "micros": {"potassium": 422, "vitC": 10.3, "magnesium": 32},
      "updatedAt": 1725300000
    }
  },
  "users": {
    "uid123": {"name":"Alex","goal":"weight_loss","role":"user"}
  },
  "favorites": {
    "uid123": {"banana": true, "oats": true}
  },
  "faqCache": {
    "banana_portion": "1 medium/day is fine for active adults..."
  }
}
              

Sample Firebase Security Rules (High-Level)

// Realtime Database Rules (illustrative)
{
  "rules": {
    ".read": false,
    ".write": false,

    "users": {
      "$uid": {
        ".read": "$uid === auth.uid",
        ".write": "$uid === auth.uid"
      }
    },

    "foods": {
      ".read": true,                // read-only public reference data
      ".write": "false"             // lock writes from client
    },

    "favorites": {
      "$uid": {
        ".read": "$uid === auth.uid",
        "$foodId": {
          ".write": "$uid === auth.uid" // user’s own favorites
        }
      }
    },

    "faqCache": {
      ".read": true,
      ".write": "false"
    }
  }
}
              

Key Features & Benefits

• Fast nutrient answers for everyday foods and fruits.
• AI chatbot explains timing, pros/cons, and portions with plain-language tips.
• Clean UI with offline cache and favorites for quick access.
• Firebase-first security and minimal PII collection.
• Scalable & extensible—plug different models or nutrition sources.

Android Integration Sketch (Java/XML)

// PSEUDO-CODE (illustrative only)

// FoodSearchViewModel.java
liveData<FoodInfo> food = new MutableLiveData<>();
void searchFood(String query){
  // 1) Try local cache (Room or Firebase local persistence)
  // 2) If miss, call NutritionRepo -> returns FoodInfo (macros/micros)
  // 3) Save to Firebase / local for future offline use
}

// ChatbotService.java
String askDietBot(String question, @Nullable UserProfile profile){
  // Build prompt with guardrails:
  // "Be concise. Cite general guidelines. Add disclaimer."
  // Call cloud function or on-device model for response
  // Return markdown/plain text
}

// Firebase Functions (optional)
exports.nutritionLookup = functions.https.onCall((data, context) => {
 // Server-side key-protected nutrition API call
 // Normalize result, return to client
});
              

What You Get