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
Android Notification Channels: The Complicated ...
Search
Daniel Lew
September 05, 2017
Programming
1
350
Android Notification Channels: The Complicated Parts
Talk given to GDG Twin Cities.
Daniel Lew
September 05, 2017
Tweet
Share
More Decks by Daniel Lew
See All by Daniel Lew
How to Use Computers (Privately!)
dlew
0
21
Finding Meaningful, Mission-Driven Work
dlew
0
130
Things Maybe You Don't Know as a Newer Developer
dlew
1
100
Maintaining Software Correctness
dlew
4
970
Grokking Coroutines (MinneBar)
dlew
5
600
ClimateChangeTech.pdf
dlew
0
120
What Tech Can Do About Climate Change
dlew
0
600
Grokking Coroutines
dlew
5
1.2k
Automated Tests Aren't Enough
dlew
0
490
Other Decks in Programming
See All in Programming
primeNumberでのRBS導入の現在 && RBS::Traceでinline RBSを拡充してみた
mnmandahalf
0
250
〜可視化からアクセス制御まで〜 BigQuery×Looker Studioで コスト管理とデータソース認証制御する方法
cuebic9bic
2
270
TypeScript LSP の今までとこれから
quramy
0
110
UPDATEがシステムを複雑にする? イミュータブルデータモデルのすすめ
shimomura
0
220
型安全なDrag and Dropの設計を考える
yudppp
5
660
SpringBootにおけるオブザーバビリティのなにか
irof
1
890
TVer iOSチームの共通認識の作り方 - Findy Job LT iOSアプリ開発の裏側 開発組織が向き合う課題とこれから
techtver
PRO
0
710
少数精鋭エンジニアがフルスタック力を磨く理由 -そしてAI時代へ-
rebase_engineering
0
130
バリデーションライブラリ徹底比較
nayuta999999
1
440
【TSkaigi 2025】これは型破り?型安全? 真実はいつもひとつ!(じゃないかもしれない)TypeScript クイズ〜〜〜〜!!!!!
kimitashoichi
1
300
Agent Rules as Domain Parser
yodakeisuke
1
350
#QiitaBash TDDでAIに設計イメージを伝える
ryosukedtomita
2
1.6k
Featured
See All Featured
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
For a Future-Friendly Web
brad_frost
178
9.7k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
30
2.4k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
25
2.8k
Stop Working from a Prison Cell
hatefulcrawdad
269
20k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
252
21k
Into the Great Unknown - MozCon
thekraken
39
1.8k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
26k
Documentation Writing (for coders)
carmenintech
71
4.8k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
19
1.3k
YesSQL, Process and Tooling at Scale
rocio
172
14k
Statistics for Hackers
jakevdp
799
220k
Transcript
Android Notification Channels: The Complicated Parts Dan Lew
Goal • Inform users • …Without annoying them
Noises • Sound
Noises • Sound • Vibration
Noises • Sound • Vibration • Light
Noises v2 • Metadata • Priority • Categories • People
• Do not Disturb interruptions • Hiding on lock screen
Android Oreo • Notification badges on launcher • Channels
None
Channels give users control
User Control App Control Importance Sound Vibration Light Show on
lock screen Show badges on launcher Bypass "Do Not Disturb” Channel Name Channel Description
targetSdkVersion 26 == Channels
None
Measure Twice, Cut Once
How Many Channels?
Trello Channel Overview Important Minor Temporary Mentions New Cards Attachments
Due Soon Cards Boards Comments Memberships
Notification Groups
Importance IMPORTANCE_HIGH Make sound and pop on screen IMPORTANCE_DEFAULT Make
sound IMPORTANCE_LOW No sound IMPORTANCE_NONE No sound or visual interruption
Custom Noise • Sound • Vibration • Light
Bells and Whistles • Badges on launcher • Bypass “do
not disturb”
Playing Dirty • Can delete & recreate channels • Users
will know • Will annoy users
val channel = NotificationChannel("news", “News", NotificationManager.IMPORTANCE_DEFAULT) channel.description = "News and
weather" channel.setShowBadge(false) val manager = context.getSystemService(NotificationManager::class.java) manager.createNotificationChannel(channel)
val channel = NotificationChannel("news", “News", NotificationManager.IMPORTANCE_DEFAULT) channel.description = "News and
weather" channel.setShowBadge(false) val manager = context.getSystemService(NotificationManager::class.java) manager.createNotificationChannel(channel)
val notification = NotificationCompat.Builder(context, "news") .setThis() .setThat() .etc() .build()
Timing • Create channels at… • Startup • First notification
• Create all channels at once • Channel creation is idempotent
Inform users… ...WITHOUT annoying them
How to annoy users without really trying
Too Many Sounds
Too Many Rows
Notification Bundles 1-3 notifications 4+ notifications
Notification Bundles Pros Cons Easy Works across channels Many noises
Only on Nougat+
Notification Groups 1 notification 2+ notifications
Notification Groups
Notification Groups Pros Cons Few notifications Few noises Extra work
Notification Groups val summaryNotification = NotificationCompat.Builder(context, "news") ... .setGroupSummary(true) .setGroup("myGroup")
.setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_SUMMARY) .build() val childNotification = NotificationCompat.Builder(context, "news") ... .setGroupSummary(false) .setGroup("myGroup") .setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_SUMMARY) .build()
Channels Break Groups • One group fails when channel disabled
• Group-per-channel creates too many rows • Group-per-channel creates too many noises
Channel Dilemma Bundling Groups Fewer rows Many noises Many rows
Fewer noises
Channel Solution • Channel should either… • Have a group
summary • Be IMPORTANCE_LOW or lower
Trello’s Setup Name Importance Summary Launcher Badge? Mentions HIGH Yes
Yes Due Soon DEFAULT Yes Yes Boards LOW No Yes Cards LOW No Yes Comments LOW No Yes Memberships LOW No Yes New Cards LOW No Yes Attachments MIN No No
Odds and Ends
Remove Notification Settings
Remove Notification Settings Intent
Listen to ACTION_LOCALE_CHANGED
Use setAlertOnlyOnce()
Summary • Embrace channels • Choose good defaults • Don’t
annoy users
Thank You! • danlew.net • @danlew42