Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Offline mode in Android apps

Sponsored · Ship Features Fearlessly Turn features on and off without deploys. Used by thousands of Ruby developers. →
Avatar for Jerzy Chalupski Jerzy Chalupski
December 07, 2013
Programming
1.4k
4

Offline mode in Android apps

The talk I gave on KrakDroid 2013 conference.

Avatar for Jerzy Chalupski

Jerzy Chalupski

December 07, 2013

More Decks by Jerzy Chalupski

See All by Jerzy Chalupski
Rx
Avatar for Jerzy Chalupski chalup
19
790
ProGuard
Avatar for Jerzy Chalupski chalup
10
1k
Data model on Android
Avatar for Jerzy Chalupski chalup
9
4.1k

Other Decks in Programming

See All in Programming
フロントエンドとバックエンドで「1文字」を揃えよう
Avatar for てきめん tekimen youkidearitai
PRO
0
390
肥大化するレガシーコードに立ち向かうためのインターフェース分離と依存の逆転 / JJUG CCC 2026 Spring
Avatar for hirokuni-maeta hirokunimaeta
0
540
Oxcを導入して開発体験が向上した話
Avatar for Yuji Yamaguchi yug1224
4
310
Observability in Practice：Grafana 與 Edge Device SRE 的那些事
Avatar for Blueswen blueswen
0
160
気圧・高度・GPSを記録&可視化するアプリ「Koudo」を作った話
Avatar for Hajime Kato hjmkth
1
180
AIで効率化できた業務・日常
Avatar for Ochtum ochtum
0
130
エージェンティックRAGにAWSで入門しよう！
Avatar for Har1101 har1101
8
1.5k
Java × distroless で 軽量なコンテナイメージを / Java on Distroless
Avatar for Daisuke Garaike contour_gara
0
540
過去最大のMCPアップデート! 2026-07-28 RC版の謎に迫る
Avatar for matsukada licux
6
270
Language Server 使ってる？ 〜VSCode と Zed の場合〜 / Are you using a Language Server? ~For VS Code and Zed~
Avatar for NAGATA Hiroaki handlename
0
780
jQueryをバージョンアップする前に使いたいjQuery Migrate
Avatar for Atsushi Matsuo matsuo_atsushi
0
330
Datadog × OpenTelemetry 入門と実践のあいだ
Avatar for Max Kento kn_to_maxpno
1
150

Featured

See All Featured
The #1 spot is gone: here's how to win anyway
Avatar for Tamara Novitovic tamaranovitovic
2
1.1k
A Soul's Torment
Avatar for Nat Ma seathinner
6
2.9k
Crafting Experiences
Avatar for Bethany Jepchumba bethany
1
180
Leo the Paperboy
Avatar for Maya Tellez mayatellez
7
1.8k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
Avatar for Rebecca Miller-Webster rmw
35
3.5k
The Mindset for Success: Future Career Progression
Avatar for Greg Gifford greggifford
PRO
0
360
CSS Pre-Processors: Stylus, Less & Sass
Avatar for Bermon Painter bermonpainter
360
30k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
Avatar for Eileen M. Uchitelle eileencodes
141
35k
First, design no harm
Avatar for Per Axbom axbom
PRO
2
1.2k
The innovator’s Mindset - 
Leading Through an Era of Exponential Change - McGill University 2025
Avatar for Jean-Marc De Jonghe jdejongh
PRO
1
200
Practical Orchestrator
Avatar for Shlomi Noach shlominoach
191
11k
Measuring & Analyzing Core Web Vitals
Avatar for Philip Tellis bluesmoon
9
860

Transcript

  1. ! Jerzy Chalupski chalup, futuresimple " [email protected] Offline mode in

    Android apps Base CRM http://porcupineprogrammer.blogspot.com/ #

  2. WHAT WHY HOW

  3. WHAT is offline mode?

  4. What happens when you send and email from Gmail app?

  5. What happens if your connection is down?

  6. What happens if your connection is down?

  7. None

  8. RECAP Offline mode = fully functional app without connection

  9. WHY should I bother?

  10. Life is too short to worry about the internet connection.

  11. I had to watch the animated circle for 2 seconds.

  12. They want to post the photos of their dinner on

    Instagram! People want to DO THINGS!

  13. SLOOOOOOW TIMEOUTS RETRYS NETWORK ERRORS HANDLING LIT SCREEN DATA PLAN

    USAGE

  14. ˑˑˑˑ˒ “Unbearably sloooooow.”

  15. ˑˑˑˑ˒ “Drains my battery.”

  16. ˑˑˑˑ˒ “Crashes all the time.”

  17. None

  18. RECAP BETTER UX

  19. RECAP BETTER UX BETTER BATTERY LIFE

  20. RECAP BETTER UX BETTER BATTERY LIFE BETTER CODE

  21. RECAP BETTER UX BETTER BATTERY LIFE BETTER CODE

  22. HOW do I implement it?

  23. UI Http Client

  24. UI Http Client SLOW FLAKY

  25. UI Http Client SLOW FLAKY CACHE ALL THE THINGS!

  26. Http Client SLOW FLAKY Storage FAST RELIABLE UI

  27. Storage Http Client SLOW FLAKY UI FAST RELIABLE GET

  28. Http Client SLOW FLAKY Storage FAST RELIABLE UI GET POST

  29. Sync Service Http Client UI Storage GET POST

  30. AbstractThreadedSyncAdapter Http Client UI ContentProvider SQLite DB CursorLoader

  31. Sync Service Http Client UI Storage

  32. Sync Service Http Client UI Storage

  33. Sync Service Http Client UI Storage

  34. BACKEND MOBILE

  35. BACKEND MOBILE

  36. BACKEND MOBILE

  37. BACKEND MOBILE

  38. BACKEND MOBILE

  39. BACKEND MOBILE

  40. BACKEND MOBILE

  41. BACKEND MOBILE

  42. BACKEND MOBILE

  43. BACKEND MOBILE

  44. BACKEND MOBILE

  45. BACKEND MOBILE

  46. BACKEND MOBILE 250k items?

  47. BACKEND MOBILE ?

  48. BACKEND MOBILE

  49. BACKEND MOBILE

  50. BACKEND MOBILE OFFLINE MODE = DATA MIGRATIONS

  51. As pleasant as data migrations with SQLiteOpenHelper.

  52. BACKEND MOBILE 1 2 1 2

  53. BACKEND MOBILE 1 2 1 2 3

  54. BACKEND MOBILE 1 2 1 2 3 3

  55. BACKEND MOBILE 1 2 1 2 3 3 3

  56. BACKEND MOBILE 1 2 1 2 3 3 3

  57. BACKEND MOBILE 1A 2B 1 2

  58. BACKEND MOBILE 1A 2B 1 2 3

  59. BACKEND MOBILE 1A 2B 1 2 3 C

  60. BACKEND MOBILE 1A 2B 1 2 3 C C

  61. BACKEND MOBILE 1A 2B 1 2 3 C 4C C

  62. BACKEND MOBILE 1A 2B 1 2 3 C 4 3

    4C

  63. BACKEND MOBILE 1A 2B 1 2 3 4 3 4C

  64. BACKEND MOBILE 1A 2B 1 2 3 4 3D 4C

  65. BACKEND MOBILE 1A 2B 1 2 2 3C 3

  66. BACKEND MOBILE 1A 2B 1 2 2 2 3C 3

  67. BACKEND MOBILE 1A 2B 1 2 2 D 2 3C

    3 ?

  68. BACKEND MOBILE 1A 2B 1 2 2 D 2 3C

    3 D

  69. BACKEND MOBILE 1A 2B 1 2 2 D 2 3C

    3 D

  70. BACKEND MOBILE 1A 2B 1 2 2 D 2 3C

    3 D

  71. BACKEND MOBILE 1A 2B 1 2 2 D 2 3C

    3 D D

  72. BACKEND MOBILE 1A 2B 1 2 2 D 2 3C

    3 D 4D D

  73. BACKEND MOBILE 1A 2B 1 2 2 D 2 3C

    3 D 4D 4D

  74. 4D BACKEND MOBILE 1A 2B 1 2 2 2 3C

    3 D 4

  75. 4D BACKEND MOBILE 1A 2B 1 2 2 2 3C

    3 4 4

  76. 4D BACKEND MOBILE 1A 2B 1 2 2 2 3C

    3 4 4

  77. “My friend, you’re entering a world of pain” WALTER SOBCHAK

  78. UUID

  79. RECAP OFFLINE MODE = MIGRATIONS

  80. RECAP UUID OR WORLD OF PAIN OFFLINE MODE = MIGRATIONS

  81. Sync Service Http Client UI Storage

  82. Sync Service Http Client UI Storage

  83. “For every complex problem there is an answer that is

    clear, simple and wrong.” HENRY LOUIS MENCKEN

  84. Sync Service Http Client UI Storage CONFLICTS

  85. Sync Service Http Client UI Storage CONFLICTS DUPLICATES

  86. Sync Service Http Client UI Storage CONFLICTS HANDLING LARGE DATA

    SETS DUPLICATES

  87. Sync Service Http Client UI Storage CONFLICTS HANDLING LARGE DATA

    SETS DUPLICATES BATTERY USAGE
  88. None

  89. !futuresimple chalup

  90. ?

  91. Thanks.