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
380
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
41
Finding Meaningful, Mission-Driven Work
dlew
0
140
Things Maybe You Don't Know as a Newer Developer
dlew
1
110
Maintaining Software Correctness
dlew
4
1k
Grokking Coroutines (MinneBar)
dlew
5
630
ClimateChangeTech.pdf
dlew
0
130
What Tech Can Do About Climate Change
dlew
0
620
Grokking Coroutines
dlew
5
1.2k
Automated Tests Aren't Enough
dlew
0
510
Other Decks in Programming
See All in Programming
Le côté obscur des IA génératives
pascallemerrer
0
150
そのpreloadは必要?見過ごされたpreloadが技術的負債として爆発した日
mugitti9
2
3.4k
GraphQL×Railsアプリのデータベース負荷分散 - 月間3,000万人利用サービスを無停止で
koxya
1
1.3k
Foundation Modelsを実装日本語学習アプリを作ってみた!
hypebeans
0
110
タスクの特性や不確実性に応じた最適な作業スタイルの選択(ペアプロ・モブプロ・ソロプロ)と実践 / Optimal Work Style Selection: Pair, Mob, or Solo Programming.
honyanya
3
170
The Past, Present, and Future of Enterprise Java
ivargrimstad
0
330
Web フロントエンドエンジニアに開かれる AI Agent プロダクト開発 - Vercel AI SDK を観察して AI Agent と仲良くなろう! #FEC余熱NIGHT
izumin5210
3
530
アメ車でサンノゼを走ってきたよ!
s_shimotori
0
220
あなたとKaigi on Rails / Kaigi on Rails + You
shimoju
0
160
Go言語の特性を活かした公式MCP SDKの設計
hond0413
1
230
ALL CODE BASE ARE BELONG TO STUDY
uzulla
20
5.1k
Writing Better Go: Lessons from 10 Code Reviews
konradreiche
0
1.2k
Featured
See All Featured
Facilitating Awesome Meetings
lara
56
6.6k
Principles of Awesome APIs and How to Build Them.
keavy
127
17k
Speed Design
sergeychernyshev
32
1.2k
Put a Button on it: Removing Barriers to Going Fast.
kastner
60
4k
Intergalactic Javascript Robots from Outer Space
tanoku
273
27k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
508
140k
Fantastic passwords and where to find them - at NoRuKo
philnash
52
3.4k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
234
17k
Rails Girls Zürich Keynote
gr2m
95
14k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.5k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.5k
The Straight Up "How To Draw Better" Workshop
denniskardys
238
140k
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