local_storage

Local Storage

利用 Shared Preferences 和 Sqflite 第三方庫，將 data 記錄在本地端。

並且利用 Android 好用的 Android Debug Database 來即時查看 local storage 的數據狀態。

Getting Started

• Android Debug Database

• Shared Preferences

• Sqflite

Android Debug Database

• Github: https://github.com/amitshekhariitbhu/Android-Debug-Database

Add this to your app's build.gradle: android/app/build.gradle

debugImplementation 'com.amitshekhar.android:debug-db:1.0.6'

debugImplementation 只會在 debug 模式下才會引入。

接著將 debug 的手機及電腦連接至相同網路中 (wifi / LAN)，並且在 App 執行之後鎖定 Logcat，並找到

D/DebugDB: Open http://XXX.XXX.X.XXX:8080 in your browser

即可連結到 Android debug database 的頁面使用。

內建 emulator 要到 terminal 跑 adb forward tcp:8080 tcp:8080然後 open http://localhost:8080

Genymotion 則到 virtualbox 打開 Bridged adapter 即可使用 ! 教學在這裡。

完成後，可以查詢頁面並且輕鬆修改、刪除

🍒 Shared Preferences

• Pub: https://pub.dev/packages/shared_preferences

My example for keeping counter value

• SharedPreferences Model
• UI layer

🍍 Streaming Shared Preferences

• Pub and tutorial: https://pub.dev/packages/streaming_shared_preferences

Streaming Shared Preferences adds reactive functionality on top of shared_preferences.

Same example as default shared preferences.

• Model
• UI

🍌 Sqflite

• Pub: https://pub.dev/packages/sqflite
• Other useful tutorial: https://medium.com/flutter-community/using-sqlite-in-flutter-187c1a82e8b

My example for keeping user data in SQLite

• Sqflite provider
• User provider model
• User model
• UI layer

🥝 Sembast

• Pub and tutorial: https://pub.dev/packages/sembast
• Oher useful tutorial: https://resocoder.com/2019/04/06/flutter-nosql-database-sembast-tutorial-w-bloc/

Same example of user data management as Sqflite implementation.

• Model
• UI