Jerzy Chałupski - Offline mode in Android apps

A talk delivered at KrakDroid 2013 conference.

Transcript

1. ! Jerzy Chalupski chalup, futuresimple " jerzy.chalupski@gmail.com 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?
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.”
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
89. !futuresimple chalup
90. ?
91. Thanks.