Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Jerzy Chałupski - Offline mode in Android apps
Search
Base Lab
January 15, 2014
Programming
3
480
Jerzy Chałupski - Offline mode in Android apps
A talk delivered at KrakDroid 2013 conference.
Base Lab
January 15, 2014
Tweet
Share
More Decks by Base Lab
See All by Base Lab
Szymon Sobczak - Hadoop + Storm
baselab
0
100
Slawek Skowron - Monitoring @ Scale
baselab
0
130
Karol Nowak - Monitoring clock drift in Amazon EC2 environment
baselab
0
110
Tomasz Nowak - Web Application Testing made easy
baselab
0
290
Szymon Pawlik - UX i Automatyzacja czyli jak testerzy mogą poprawić produkt.
baselab
0
250
Mateusz Herych - LIKE '%smth%' is not the way
baselab
0
140
Jerzy Chałupski - Data model on Android
baselab
4
230
Other Decks in Programming
See All in Programming
Webサーバーサイド言語としてのRustについて
kouyuume
0
570
XP, Testing and ninja testing ZOZ5
m_seki
3
750
Cursorハンズオン実践!
eltociear
2
1.2k
Software Architecture
hschwentner
6
2.3k
Devoxx BE 2025 Loom lab
josepaumard
0
110
Range on Rails ―「多重範囲型」という新たな選択肢が、複雑ロジックを劇的にシンプルにしたワケ
rizap_tech
0
6.7k
なぜあの開発者はDevRelに伴走し続けるのか / Why Does That Developer Keep Running Alongside DevRel?
nrslib
3
410
Flutterで分数(Fraction)を表示する方法
koukimiura
0
140
Catch Up: Go Style Guide Update
andpad
0
230
EMこそClaude Codeでコード調査しよう
shibayu36
0
240
スマホから Youtube Shortsを見られないようにする
lemolatoon
27
33k
ALL CODE BASE ARE BELONG TO STUDY
uzulla
25
6.5k
Featured
See All Featured
Fantastic passwords and where to find them - at NoRuKo
philnash
52
3.4k
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
333
22k
Mobile First: as difficult as doing things right
swwweet
225
10k
Designing Experiences People Love
moore
142
24k
Building an army of robots
kneath
306
46k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.5k
Scaling GitHub
holman
463
140k
Testing 201, or: Great Expectations
jmmastey
45
7.7k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
253
22k
For a Future-Friendly Web
brad_frost
180
10k
[RailsConf 2023] Rails as a piece of cake
palkan
57
5.9k
Code Reviewing Like a Champion
maltzj
526
40k
Transcript
! Jerzy Chalupski chalup, futuresimple "
[email protected]
Offline mode in
Android apps Base CRM http://porcupineprogrammer.blogspot.com/ #
WHAT WHY HOW
WHAT is offline mode?
What happens when you send and email from Gmail app?
What happens if your connection is down?
What happens if your connection is down?
None
RECAP Offline mode = fully functional app without connection
WHY should I bother?
Life is too short to worry about the internet connection.
I had to watch the animated circle for 2 seconds.
They want to post the photos of their dinner on
Instagram! People want to DO THINGS!
SLOOOOOOW TIMEOUTS RETRYS NETWORK ERRORS HANDLING LIT SCREEN DATA PLAN
USAGE
ˑˑˑˑ˒ “Unbearably sloooooow.”
ˑˑˑˑ˒ “Drains my battery.”
ˑˑˑˑ˒ “Crashes all the time.”
None
RECAP BETTER UX
RECAP BETTER UX BETTER BATTERY LIFE
RECAP BETTER UX BETTER BATTERY LIFE BETTER CODE
RECAP BETTER UX BETTER BATTERY LIFE BETTER CODE
HOW do I implement it?
UI Http Client
UI Http Client SLOW FLAKY
UI Http Client SLOW FLAKY CACHE ALL THE THINGS!
Http Client SLOW FLAKY Storage FAST RELIABLE UI
Storage Http Client SLOW FLAKY UI FAST RELIABLE GET
Http Client SLOW FLAKY Storage FAST RELIABLE UI GET POST
Sync Service Http Client UI Storage GET POST
AbstractThreadedSyncAdapter Http Client UI ContentProvider SQLite DB CursorLoader
Sync Service Http Client UI Storage
Sync Service Http Client UI Storage
Sync Service Http Client UI Storage
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE 250k items?
BACKEND MOBILE ?
BACKEND MOBILE
BACKEND MOBILE
BACKEND MOBILE OFFLINE MODE = DATA MIGRATIONS
As pleasant as data migrations with SQLiteOpenHelper.
BACKEND MOBILE 1 2 1 2
BACKEND MOBILE 1 2 1 2 3
BACKEND MOBILE 1 2 1 2 3 3
BACKEND MOBILE 1 2 1 2 3 3 3
BACKEND MOBILE 1 2 1 2 3 3 3
BACKEND MOBILE 1A 2B 1 2
BACKEND MOBILE 1A 2B 1 2 3
BACKEND MOBILE 1A 2B 1 2 3 C
BACKEND MOBILE 1A 2B 1 2 3 C C
BACKEND MOBILE 1A 2B 1 2 3 C 4C C
BACKEND MOBILE 1A 2B 1 2 3 C 4 3
4C
BACKEND MOBILE 1A 2B 1 2 3 4 3 4C
BACKEND MOBILE 1A 2B 1 2 3 4 3D 4C
BACKEND MOBILE 1A 2B 1 2 2 3C 3
BACKEND MOBILE 1A 2B 1 2 2 2 3C 3
BACKEND MOBILE 1A 2B 1 2 2 D 2 3C
3 ?
BACKEND MOBILE 1A 2B 1 2 2 D 2 3C
3 D
BACKEND MOBILE 1A 2B 1 2 2 D 2 3C
3 D
BACKEND MOBILE 1A 2B 1 2 2 D 2 3C
3 D
BACKEND MOBILE 1A 2B 1 2 2 D 2 3C
3 D D
BACKEND MOBILE 1A 2B 1 2 2 D 2 3C
3 D 4D D
BACKEND MOBILE 1A 2B 1 2 2 D 2 3C
3 D 4D 4D
4D BACKEND MOBILE 1A 2B 1 2 2 2 3C
3 D 4
4D BACKEND MOBILE 1A 2B 1 2 2 2 3C
3 4 4
4D BACKEND MOBILE 1A 2B 1 2 2 2 3C
3 4 4
“My friend, you’re entering a world of pain” WALTER SOBCHAK
UUID
RECAP OFFLINE MODE = MIGRATIONS
RECAP UUID OR WORLD OF PAIN OFFLINE MODE = MIGRATIONS
Sync Service Http Client UI Storage
Sync Service Http Client UI Storage
“For every complex problem there is an answer that is
clear, simple and wrong.” HENRY LOUIS MENCKEN
Sync Service Http Client UI Storage CONFLICTS
Sync Service Http Client UI Storage CONFLICTS DUPLICATES
Sync Service Http Client UI Storage CONFLICTS HANDLING LARGE DATA
SETS DUPLICATES
Sync Service Http Client UI Storage CONFLICTS HANDLING LARGE DATA
SETS DUPLICATES BATTERY USAGE
None
!futuresimple chalup
?
Thanks.