Juglandaceous Jibber

Application Functionality

### Core Functionality

- Life Countdown: Calculates elapsed time and remaining time.

- Dual Mode Switching: Offers both death countdown mode and life countdown mode.

- Custom Events: Add birthdays, anniversaries, and custom important dates.

- Holiday Countdown: Includes a built-in countdown timer for important holidays.

- Desktop Widget: Displays life progress on the home screen.

### Interface Features

- Immersive Status Bar: Automatically adapts to dark/light themes.

- Smooth Animations: Beautiful animations for page transitions and button clicks.

- Dual Theme Design:

- Death Mode: Dark theme, emphasizing the preciousness of life.

- Life Mode: Light theme, showcasing the beauty of life.

- Card Flipping Effect: 3D card flipping animation during mode switching.

### Data Display

- Detailed Statistics: Heart rate, respiratory rate, blink rate.

- Percentage Display: Percentage of time already lived and time remaining.

- Real-time Update: The countdown updates automatically every minute. Zero-padding format: All numbers are displayed as two digits (e.g., 05 instead of 5).

## User Guide

### First Use

1. A welcome dialog box will appear after launching the application.

2. Click the "Set Birthday" button and select your date of birth.

3. Set your life expectancy (default 80 years).

4. Click "Start Experience" to enter the main interface.

### Main Interface Operations

- Mode Switching: Click the toggle button at the top to switch between Death Mode and Life Mode.

- View Statistics: Detailed statistics are displayed for each mode.

- Setting Adjustments: Click the Settings button to modify your birthday and life expectancy.

### Custom Events

1. Click the "Custom Countdown" button on the main interface.

2. Click the "Add Event" button.

3. Fill in the event information:

- Event Name

- Event Type (Birthday/Anniversary/Custom)

- Event Notes (Optional)

- Select Date

4. After saving, the event will be displayed in the list and a real-time countdown will begin.

### Holiday Countdown

1. Click the "Holiday Countdown" button on the main interface.

2. View the built-in countdown for important holidays.

3. Includes holidays such as Chinese New Year, Christmas, and New Year's Day.

## Technical Features

### Development Technologies

- Language: Pure Java development, no third-party framework dependencies

- Minimum Support: Android 6.0 (API 24)

- Target Version: Android 14 (API 35)

- UI Components: RecyclerView, CardView, Custom Views

### Data Storage

- SharedPreferences: Local storage of user settings and event data

- Gson Serialization: JSON serialization and storage of complex objects

- Automatic Synchronization: Data is saved in real time; data is not lost after application restart.

### Performance Optimization

- Memory Management: Automatic resource cleanup when Activity is destroyed

- Timer Optimization: Only updates visible countdown components

- Smooth Animations: Hardware acceleration ensures smooth 60fps animations.

## Interface Preview

### Main Interface

- Dual-mode card design

- Real-time countdown display

- Detailed statistics

- Immersive Status Bar

### Custom Events

- Event List Display

- Real-time Countdown Updates

- Add/Edit/Delete Functionality

- Type Selection Pop-up for Enhanced Aesthetics

### Settings Interface

- Birthday Date Picker

- Life Expectancy Settings

- About Page Information

## Installation Instructions

### System Requirements

- Android 6.0 or later

- At least 50MB of available storage space

- 2GB or more RAM recommended

### Installation Steps

1. Download the APK file

2. Allow installation of apps from unknown sources

3. Click Install

4. Launch the app and follow the wizard to set it up