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Offline mode in Android apps

Avatar for Jerzy Chalupski Jerzy Chalupski
December 07, 2013
Programming
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Offline mode in Android apps

The talk I gave on KrakDroid 2013 conference.
Avatar for Jerzy Chalupski

Jerzy Chalupski

December 07, 2013
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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.