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
bootcamp2025_バックエンド研修_WebAPIサーバ作成.pdf
geniee_inc
0
120
Flutterで分数(Fraction)を表示する方法
koukimiura
0
140
EMこそClaude Codeでコード調査しよう
shibayu36
0
330
釣り地図SNSにおける有料機能の実装
nokonoko1203
0
190
AI 駆動開発におけるコミュニティと AWS CDK の価値
konokenj
4
140
pnpm に provenance のダウングレード を検出する PR を出してみた
ryo_manba
1
150
NixOS + Kubernetesで構築する自宅サーバーのすべて
ichi_h3
0
1.1k
あなたとKaigi on Rails / Kaigi on Rails + You
shimoju
0
180
デミカツ切り抜きで面倒くさいことはPythonにやらせよう
aokswork3
0
260
Devvox Belgium - Agentic AI Patterns
kdubois
1
140
登壇は dynamic! な営みである / speech is dynamic
da1chi
0
350
『毎日の移動』を支えるGoバックエンド内製開発
yutautsugi
2
270
Featured
See All Featured
Making Projects Easy
brettharned
120
6.4k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
4k
Building Adaptive Systems
keathley
44
2.8k
Making the Leap to Tech Lead
cromwellryan
135
9.6k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
140
34k
Build The Right Thing And Hit Your Dates
maggiecrowley
37
2.9k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
253
22k
Agile that works and the tools we love
rasmusluckow
331
21k
What’s in a name? Adding method to the madness
productmarketing
PRO
24
3.7k
Testing 201, or: Great Expectations
jmmastey
45
7.7k
Learning to Love Humans: Emotional Interface Design
aarron
274
41k
A Modern Web Designer's Workflow
chriscoyier
697
190k
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.