Boarding House Monitoring System for Android

I'll create a comprehensive Android application for boarding house management with separate interfaces for renters and landlords. Here's a complete solution using Java for Android Studio:

Boarding House Monitoring System Overview

I've created a comprehensive Android application for boarding house management with two distinct user interfaces:

Key Features

1. User Authentication

   • Separate login/registration for landlords and renters
   • Secure user session management

2. Room Management

   • Landlords can add, view, and manage rooms
   • Renters can browse available rooms
   • Room details include images, descriptions, and pricing

3. Reservation System

   • Renters can reserve rooms for specific dates
   • Landlords can view and manage reservations

4. Payment Processing

   • Simple payment workflow with receipt generation
   • Multiple payment method options
   • Payment history tracking

5. Notification System

   • Vacation notices from renters to landlords
   • General notification system for important updates

6. User Dashboards

   • Landlord dashboard for property management
   • Renter dashboard for room browsing and reservations

Technical Implementation

The application uses:

• SQLite database for local data storage
• Navigation drawer for easy access to features
• RecyclerViews for displaying lists of rooms, reservations, etc.
• Fragments for modular UI components
• Shared Preferences for user session management

Application Flow

1. Users register/login as either a landlord or renter
2. Landlords can add rooms and manage their properties
3. Renters can browse available rooms, make reservations, or rent directly
4. Payment processing includes receipt generation
5. Renters can submit vacation notices to inform landlords of absences

I'll fix the missing color resource error. The issue is that the nav_header.xml file is referencing a color resource @color/colorPrimary that doesn't exist in your project.

The error occurred because the nav_header.xml file was referencing a color resource @color/colorPrimary that wasn't defined in your project.

I've made two changes to fix this:

1. Created a colors.xml file with the necessary color definitions, including:

   • colorPrimary: A green color for your primary theme color
   • colorPrimaryDark: A darker green for the status bar
   • colorAccent: A light green for accents
   • Additional utility colors for your app
2. Updated the nav_header.xml file to use ?attr/colorPrimary instead of @color/colorPrimary. This references the theme attribute rather than directly referencing the color resource, which is a more flexible approach that works with theme changes.

These changes should resolve the AAPT error and allow your app to compile successfully. The navigation header will now use the primary color defined in your theme.