Bitcoin Wallet App

Overview

This Bitcoin Wallet application allows users to manage their Bitcoin balance, track transactions, and view the current Bitcoin to USD exchange rate. The app features two main screens: a Balance Screen and a Transaction Screen.

Requirements

Screen 1: Balance Screen

• Balance Display: Shows the current Bitcoin balance with a button to deposit more Bitcoin.
• Deposit Button: Opens a pop-up for the user to enter the amount of Bitcoin to deposit.
• Add Transaction Button: Navigates to the Transaction Screen.
• Transaction List: Displays all transactions, grouped by days from newest to oldest. Each transaction shows the time, amount, and category (groceries, taxi, electronics, restaurant, other).
• Pagination: Loads transactions in batches of 20 as the user scrolls.
• Bitcoin Exchange Rate: Shows the current Bitcoin to USD exchange rate, updated every session but not more than once per hour. The exchange rate is fetched from a specified API.

Screen 2: Transaction Screen

• Transaction Amount Input: Field to enter the transaction amount.
• Category Selection: Options to select the transaction category (groceries, taxi, electronics, restaurant, other).
• Add Button: Adds the transaction and navigates back to the Balance Screen with updated information.

Technical Specifications

• Language: Swift
• Data Storage: Core Data
• Architecture: MVVM
• UI: Implemented programmatically without XIBs or Storyboards
• Dependencies: No third-party libraries used

Getting Started

Prerequisites

• Xcode 12.0 or later
• iOS 14.0 or later

Installation

1. Clone the repository:

git clone https://github.com/yourusername/bitcoin-wallet-app.git

2. Open the project in Xcode:

cd ExpenseTracker

open ExpenseTracker.xcodeproj

3. Build and run the project on your preferred simulator.