• Server Repository: https://github.com/xyliax/GEM-Server
• Client Repository: https://github.com/guomaimang/GEM
• Android APK Release: https://github.com/guomaimang/GEM/releases

• A server running on Centos7: GEM-Server
  • Manage the application's database: Mysql
• An Android Application With API31: GEM
  • Complete and faultless operational logic
  • Access to mobile device storage: Get Permissions
  • Information preservation and retrieval: Local Cache and Sqlite

• Mobility Support: For Android 11+
• Location Based Services: Hybrid positioning based on GPS and network.
• Mobility Management: Muit-Agent and Global CDN
• Security Mechanisms: HTTPS and SHA256 while Network transmission
• Compliance: Minimum permission requested
• Android Client: Multithreading
• Android Jetpack: Long Dynamic Data Lifecycle (LiveData+ViewModel)
• Server: Java/Springboot Multithreading

• GUI design
• Devops: Best Practices
• Server-Client interaction
• Successful compilation
• No runtime errors

• Detailed Design
• Server: Source Code Installation Guide
• Client: Source Code Installation Guide

• Server Environment: MacOS Ventura, with JDK 17.0.5+
• Client Environment: MacOS 10.15.7 with Android 11+ (Minimum API 30)

Essential Development Tools:

• IntelJIDEA
• AndroidStudio
• Postman