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Frequently Asked Questions
Q. 1) Develop a simple To-Do List application with the following features: Add, edit, and delete tasks.
Display tasks in a RecyclerView. Save tasks persistently using Room Database. Include a checkbox to mark tasks as completed.
Features: Add, edit, and delete tasks. Mark tasks as completed using a checkbox. Display tasks in a RecyclerView. Persist data using Room Database. Tech Stack: Kotlin/Java, Android Jetpack (Room, LiveData, ViewModel). Steps: Design UI with EditText, Button, and RecyclerView. Implement Room Database with Entity, DAO, and Repository. Use ViewModel and LiveData for data updates.
Q. 2) Create a weather application that fetches weather data from an API (e.g., OpenWeatherMap). Input: City name.
Output: Display the current temperature, weather condition, and an appropriate icon. Use Retrofit or Volley for API requests and Glide for image loading.
Features: Input city name to fetch weather data. Display temperature, weather condition, and an icon. Use Retrofit/Volley for API requests. Use Glide for image loading. Tech Stack: Kotlin/Java, Retrofit/Volley, Glide, OpenWeatherMap API. Steps: Fetch weather data from OpenWeatherMap API. Parse JSON response and display data in a user-friendly UI. Implement error handling for invalid inputs.
Q. 3) Build a basic calculator app with a user-friendly interface. Features: Perform addition, subtraction, multiplication, and division. Use buttons for numbers and operations.
Features: Perform addition, subtraction, multiplication, and division. User-friendly interface with buttons for numbers and operations. Tech Stack: Kotlin/Java. Steps: Create UI with Buttons and a TextView for result display. Implement basic arithmetic logic in the backend. Handle edge cases like division by zero.
Q. 4) Develop an Expense Tracker app with the following features: Add, view, and delete expenses. Show a summary of expenses using a Pie Chart or Bar Chart (use MPAndroidChart). Categorize expenses (e.g., Food, Travel, Shopping). Save data using SQLite or Room Database.
Add, view, and delete expenses. Show a summary with Pie Chart/Bar Chart (MPAndroidChart). Categorize expenses. Use SQLite or Room for data persistence. Tech Stack: Kotlin/Java, Room, MPAndroidChart. Steps: Design UI for adding and viewing expenses. Implement Room for expense data storage. Use MPAndroidChart for visual representation of expense data.
Q. 5) Develop a basic chat application with Firebase Realtime Database. Features: Allow users to send and receive messages in real-time. Include a basic login system with email/password. Display messages in a chat bubble UI.
Real-time messaging with Firebase Realtime Database. Basic email/password login system. Chat bubble UI for displaying messages. Tech Stack: Kotlin/Java, Firebase Realtime Database, Firebase Authentication. Steps: Set up Firebase Realtime Database and Authentication. Create a simple chat UI using RecyclerView. Handle real-time data updates with Firebase listeners.
Q. 6) Develop a miniature social media application with the following features: User Profiles: Allow users to create and edit profiles. Post Sharing: Users can create, edit, and delete posts with text, images, and videos. Like and Comment System: Implement real-time interactions using Firebase Firestore. Authentication: Use Firebase Authentication for email/password and social logins (e.g., Google, Facebook). Push Notifications: Notify users when someone likes or comments on their post using Firebase Cloud Messaging (FCM).
User profiles with editable details. Post sharing with text, images, and videos. Like and comment system using Firebase Firestore. Firebase Authentication for login (email/password, social logins). Push notifications using Firebase Cloud Messaging. Tech Stack: Kotlin/Java, Firebase Firestore, Firebase Authentication, Firebase Cloud Messaging. Steps: Implement user authentication and profile management. Use Firestore for storing posts, likes, and comments. Configure FCM for real-time notifications.
Q. 7) Create an intelligent chatbot app using an AI API like OpenAI or Dialogflow. Integrate voice-to-text and text-to-speech functionalities using Android Speech API. Enable the chatbot to answer queries, suggest actions, or perform small tasks (e.g., setting reminders). Store the chat history locally and synchronize it with a remote database for logged-in users. Add sentiment analysis for user inputs and customize chatbot responses.
Integrate OpenAI or Dialogflow API for AI chatbot. Use Android Speech API for voice-to-text and text-to-speech. Store chat history locally and synchronize it remotely. Add sentiment analysis for inputs. Tech Stack: Kotlin/Java, OpenAI/Dialogflow API, Android Speech API, Firebase/SQLite. Steps: Implement API integration for chatbot responses. Use Speech API for voice functionalities. Store chat history using Room/Firebase.
Q. 8) Develop an AR-based shopping app using ARCore. Enable users to place 3D models of furniture or other products in their physical environment. Integrate 3D assets for products and allow resizing and rotation. Add a product catalog and use Firebase or a REST API to fetch product details. Include a wishlist and shopping cart functionality.
Use ARCore for placing 3D models in real-world environments. Add a product catalog and shopping cart. Fetch product details via Firebase/REST API. Wishlist functionality. Tech Stack: Kotlin/Java, ARCore, Firebase/REST API. Steps: Set up ARCore for 3D model placement. Fetch product details from API. Implement a cart and wishlist system.
Q. 9) Build a real-time location tracker app with the following features: Display users' locations on a map using Google Maps API. Allow a user to share their live location with friends or family using Firebase Realtime Database. Enable geofencing to send notifications when a user enters or exits a predefined area. Add offline location tracking by saving data locally and synchronizing it when the app reconnects to the internet.
Display user locations on a map using Google Maps API. Live location sharing via Firebase Realtime Database. Geofencing for notifications on area entry/exit. Offline location tracking. Tech Stack: Kotlin/Java, Google Maps API, Firebase Realtime Database. Steps: Implement Google Maps API for real-time location display. Use geofencing APIs for area-based notifications. Synchronize offline data with Firebase.
Q. 10) Create a cryptocurrency wallet app that includes: Wallet Management: Add multiple wallets and track balances in different cryptocurrencies. API Integration: Use a cryptocurrency API (e.g., CoinGecko or Binance) to fetch real-time prices. ransaction History: Display the user's transaction history with detailed logs. Secure Authentication: Use biometric authentication (fingerprint or face recognition) for secure access. Data Encryption: Encrypt sensitive data like private keys before storing it locally.
Manage multiple wallets and track cryptocurrency balances. Use CoinGecko/Binance API for real-time prices. Display transaction history. Secure authentication with biometrics. Encrypt sensitive data locally. Tech Stack: Kotlin/Java, CoinGecko/Binance API, Biometric API, AES Encryption. Steps: Integrate cryptocurrency API for real-time data. Implement secure biometric authentication. Use AES encryption for sensitive data storage.
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