DESIGN AND EVALUATION OF AN OFFLINE ANDROID-BASED ACADEMIC SCHEDULING SYSTEM WITH AUTOMATED CONFLICT DETECTION AND REMINDER MECHANISM

DOI: https://doi.org/10.33650/codex.v1i3.16085
Authors

(1) * Adi Alfaisal   (STKIP TAMAN SISWA BIMA)  
        Indonesia
(2)  Nur Fadilah   (STKIP TAMAN SISWA BIMA)  
        Indonesia
(3)  Nur Fitrianingsih   (STKIP TAMAN SISWA BIMA)  
        Indonesia
(*) Corresponding Author

Abstract


Students with multiple academic activities often have difficulty organizing class schedules, which results in missed sessions, incorrect room information, and overlapping course entries. Existing student scheduling applications mainly provide schedule recording and reminders, and studies that combine automatic conflict validation with offline local storage remain limited. This study aims to design and evaluate an offline Android-based academic scheduling system with an automated schedule conflict detection mechanism and a class reminder mechanism. The system was developed using the Waterfall model, which consists of requirement analysis, system design, implementation, testing, and evaluation. It uses a three-layer architecture, Create, Read, Update, and Delete (CRUD) operations on a persistent SQLite database, a conflict validation query that compares the day and time range of a new entry with stored schedules, and reminders scheduled through Android's AlarmManager. Black-box functional testing with four scenarios showed that all scenarios passed: valid schedules were saved, invalid time input was rejected, overlapping schedules were blocked with a warning, and reminder alarms were registered in the Android system to trigger a local notification 15 minutes before class. These results indicate that the proposed system prevents scheduling input errors without requiring an internet connection. The system provides a practical basis for student time management, and future work should include user acceptance testing, cloud synchronization, and schedule export.

Keywords

Android Scheduling System, Offline Mobile Application, Schedule Conflict Detection, Automated Reminder Notification, SQLite Database.







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CODEX: Journal of Software Engineering
Published by Lembaga Penerbitan, Penelitian dan Pengabdian kepada Masyarakat (LP3M) of Nurul Jadid University, Probolinggo, East Java, Indonesia.