README.md

🔋 Battery Manager App (Java + XML)

This Android project demonstrates a detailed and practical implementation of BroadcastReceiver, focusing on the BatteryManager API. The app is built using Java and XML, with a clean UI structured around Bottom Navigation and ViewPager for smooth screen transitions.

🚀 Key Features

• 📡 Real-Time Battery Monitoring via BroadcastReceiver

• 🔋 Displays:

  • Battery Voltage
  • Battery Current Now
  • Battery Temperature
  • Battery Health
  • Battery Status (Charging/Not Charging)
  • Charger Plugged Status (AC, USB, Wireless)
  • Charge Time Remaining
  • Battery Scale
  • Current Average
  • Energy Counter

• 📱 ViewPager for seamless tab navigation

• 🧭 Bottom Navigation Bar for structured UI

• ⚡ Implicit Intent button to launch Power Usage Summary

🛠 Tech Stack

• Language: Java
• UI: XML
• Architecture: Activity-based
• Navigation: Bottom NavigationView + ViewPager
• System Services: BatteryManager, BroadcastReceiver, Intent

📷 Demo Video

battery_tracker.mp4

💡 Learning Outcome

This project serves as a great reference for:

• Working with Android System Broadcasts
• Using BatteryManager effectively
• Implementing real-time UI updates based on system states
• Using intents and system actions
• Navigating between screens with BottomNavigation and ViewPager

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