Just replace your data to the database and beautiful native android book app ready with the following feature.
Feature
✓ Offline reading, allowing it to work without an internet connection
✓ Multi-language making it accessible to majority of users
✓ Support Text Marker
✓ Underline Text
✓ Put Notes on Text
✓ Change Text Colour to suit environment and preference
✓ Change Font Size for ease of reading
✓ Bookmark for easy retrieval and reference
✓ Add & Manage Notes
✓ Search facilities
✓ Brightness
✓ Indicator
✓ Firebase Notification
✓ Admob