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Hands-On Projects

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Practical Experience to Enhance Your Skills

Hands-on projects are an excellent way to apply what you've learned in Kotlin and Android development. In this section, we’ll introduce several easy projects that will help reinforce your knowledge and build your portfolio. Each project will challenge you to implement different features and concepts, ensuring you gain practical experience while having fun.

 
1. Simple To-Do List App

Objective: Create a basic to-do list application that allows users to add, view, and delete tasks.

Key Features:

  • Input field to add new tasks.

  • A list to display added tasks.

  • Ability to mark tasks as complete or delete them.

Technologies Used:

  • Kotlin

  • RecyclerView for displaying tasks

  • Room for local data storage

 
2. Currency Converter App

Objective: Build a currency converter app that allows users to convert between different currencies.

Key Features:

  • Input fields for the amount and selection of currencies.

  • Fetch real-time exchange rates from an API.

  • Display the converted amount.

Technologies Used:

  • Kotlin

  • Retrofit for API calls

  • Simple user interface with TextViews and EditTexts

 
3. Basic Calculator App

Objective: Develop a simple calculator that performs basic arithmetic operations.

Key Features:

  • Input fields for numbers and buttons for operations (add, subtract, multiply, divide).

  • Display the result of the calculation.

Technologies Used:

  • Kotlin

  • Simple layout with buttons and TextView

  • Logic to handle operations and display results

 
4. Recipe Book App

Objective: Create an app that allows users to view and save their favorite recipes.

Key Features:

  • A list of recipes with images and descriptions.

  • Option to add new recipes and save them locally.

  • Ability to search through recipes.

Technologies Used:

  • Kotlin

  • RecyclerView for displaying recipes

  • Room for local data storage

 
5. Random Quote Generator

Objective: Build an app that displays a random quote each time the user presses a button.

Key Features:

  • A button that generates a new random quote from a predefined list.

  • Display the quote and the author’s name.

Technologies Used:

  • Kotlin

  • Simple layout with TextView and Button

  • Array or List to store quotes

 
6. Weather App

Objective: Develop a weather app that shows current weather conditions based on user input.

Key Features:

  • Input field for city name and a button to fetch weather data.

  • Display temperature, weather conditions, and an icon representing the weather.

Technologies Used:

  • Kotlin

  • Retrofit for fetching data from a weather API

  • JSON parsing to extract relevant informatio

 
7. Flashlight App

Objective: Create a simple flashlight app that uses the device's camera flashlight.

Key Features:

  • A button to turn the flashlight on and off.

  • A user-friendly interface.

Technologies Used:

  • Kotlin

  • CameraManager to control the flashlight

  • Simple layout with a toggle button

 
Next Steps

Completing these projects will provide you with valuable experience in Android development using Kotlin. As you build these applications, remember to refer back to the Kotlin Basics and Developing Android Apps sections for guidance on concepts and best practices.

After mastering these hands-on projects, you’ll be well-equipped to move on to more complex projects, improve your skills further, and explore topics such as Testing & Debugging and Monetization with AdMob.

Let’s get started on these exciting projects and bring your ideas to life! Happy coding!

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