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 Transitions
Search
Bryan Herbst
February 06, 2016
Programming
0
470
Android Transitions
A tour of the Transitions framework in Android
Bryan Herbst
February 06, 2016
Tweet
Share
More Decks by Bryan Herbst
See All by Bryan Herbst
Semantics in Jetpack Compose
bherbst
0
12k
Kotlin Multiplatform
bherbst
0
820
Android App Architecture & Navigation
bherbst
0
2k
What's in the Android Toolbox
bherbst
0
500
Gradle Deep Dive
bherbst
2
1.9k
Actions with Google
bherbst
0
1.4k
Databinding in Android
bherbst
0
440
Activities Vs. Fragments
bherbst
0
340
Android Transitions
bherbst
0
60
Other Decks in Programming
See All in Programming
20250704_教育事業におけるアジャイルなデータ基盤構築
hanon52_
5
910
PostgreSQLのRow Level SecurityをPHPのORMで扱う Eloquent vs Doctrine #phpcon #track2
77web
2
570
MCPを使ってイベントソーシングのAIコーディングを効率化する / Streamlining Event Sourcing AI Coding with MCP
tomohisa
0
160
MDN Web Docs に日本語翻訳でコントリビュートしたくなる
ohmori_yusuke
1
130
20250628_非エンジニアがバイブコーディングしてみた
ponponmikankan
0
710
『自分のデータだけ見せたい!』を叶える──Laravel × Casbin で複雑権限をスッキリ解きほぐす 25 分
akitotsukahara
2
650
RailsGirls IZUMO スポンサーLT
16bitidol
0
200
たった 1 枚の PHP ファイルで実装する MCP サーバ / MCP Server with Vanilla PHP
okashoi
1
290
システム成長を止めない!本番無停止テーブル移行の全貌
sakawe_ee
1
280
GitHub Copilot and GitHub Codespaces Hands-on
ymd65536
2
150
TypeScriptでDXを上げろ! Hono編
yusukebe
3
690
High-Level Programming Languages in AI Era -Human Thought and Mind-
hayat01sh1da
PRO
0
840
Featured
See All Featured
The Illustrated Children's Guide to Kubernetes
chrisshort
48
50k
Building Applications with DynamoDB
mza
95
6.5k
Intergalactic Javascript Robots from Outer Space
tanoku
271
27k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
357
30k
Optimizing for Happiness
mojombo
379
70k
Optimising Largest Contentful Paint
csswizardry
37
3.3k
Fashionably flexible responsive web design (full day workshop)
malarkey
407
66k
Statistics for Hackers
jakevdp
799
220k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
26k
Done Done
chrislema
184
16k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.8k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
281
13k
Transcript
Transitions Bryan Herbst Android Engineer @ Target
Abrupt transitions are jarring
Smooth transitions provide continuity
Smooth transitions keep users engaged
Smooth transitions delight users
“In the world of material design, motion describes spatial relationships,
functionality, and intention with beauty and fluidity.”
Android Transitions Activity to Activity Fragment to Fragment
Scene to Scene (Views)
Hold on… Requires API 21
Hold on… Progressive enhancement, graceful degradation
Hold on… Support APIs offer default behavior
on older versions
Scenes Snapshot of a ViewGroup
Scene transition TransitionManager.beginDelayedTransition(rootView, new Fade()); button.setVisibility(View.INVISIBLE);
What is this black magic?
How it works 1. beginDelayedTransition() => Take a snapshot of
ViewGroup 2. Update Views 3. On next layout pass, Android takes another snapshot and creates animations
How it works 1. beginDelayedTransition() => Take a snapshot of
ViewGroup
How it works 1. beginDelayedTransition() => Take a snapshot of
ViewGroup 2. Update Views
Transition types Fade Explode Slide ChangeBounds
AutoTransition Fade Move Resize
What about property animation? ObjectAnimator.ofFloat(button, "alpha", 1f, 0f) .start();
What about property animation? button.animate().alpha(0f);
What about property animation? Fine if you want to think
about Views individually
What about property animation? Fine if you want to think
about Views individually Scenes allow us to think in groups
Activities With shared elements
Activity Transitions- setup Request Window.FEATURE_ACTIVITY_TRANSITIONS and Window.FEATURE_CONTENT_TRANSITIONS in both
Activities
Activity Transitions- setup Set a transition name on
the View in both Activities
What are these transition names? An ID for the transition
framework
Rule #1 All animating Views must have a transition name
Rule #2 All transition names must be unique within a
layout
Not a rule #1 Transition names don’t need to match
between layouts
Activity Transitions- setup Create a Bundle with ActivityOptions .makeSceneTransitionAnimation(activity,
sharedView, viewTransitionName) .toBundle();
Activity Transitions- setup Set your Transitions
Activity Transitions- setup Call startActivity(intent, transitionBundle);
Specifying shared elements makeSceneTransitionAnimation(activity, sharedView, transitionName); We specify pairs of
Views and transition names.
Specifying shared elements makeSceneTransitionAnimation(activity, sharedView, transitionName); We specify pairs of
Views and transition names. The sharedView is the original view in our current layout (the starting state)
Specifying shared elements makeSceneTransitionAnimation(activity, sharedView, transitionName); We specify pairs of
Views and transition names. The sharedView is the original view in our current layout (the starting state) The viewTransitionName is the name of the corresponding view in the new layout (the ending state)
Activity transitions magic Captures Views in first Activity, then second
Activity
Activity Transitions use the Window e.g. getWindow().setEnterTransition(new Fade());
Four transition types Enter Exit Reenter
Return
Four transition types Enter
Four transition types Exit
Four transition types Reenter
Four transition types Return
Four transition types x2 with Shared elements
Or not Stick with enter and return for shared elements
Shared exit and reenter Allow for animation before the transition
Sample Exit, shared enter, enter
Sample Reenter, shared return, return
A note on timing Because sometimes Views don’t exist right
away
Delayed transitions postponeEnterTransition(); startPostponedEnterTransition();
WARNING! Blocks transition
WARNING! Blocks transition
WARNING! Prefetch or find clever alternatives
Fragment example
Transition setup setExitTransition(new Fade()); Fade out non-shared elements
Transition setup newFrag.setSharedElementEnterTransition(new AutoTransition()); AutoTransition shared elements
Transition setup newFrag.setEnterTransition(new Fade()); Fade in non-shared elements
Making the transition fragmentManager.beginTransaction() .replace(R.id.container, newFrag) .addSharedElement(sharedView, "transitionName") .commit();
What about delayed transitions? Ugh. It isn’t good in
Fragments.
I didn’t want to animate that!
Targets- includes <fade> <targets> <target android:includeId="@id/fancyWidget"/> <target android:includeClass=“com.example.FancyWidget"/> <target android:includeName=“fancyWidget"/>
</targets> </fade>
Targets- excludes <fade> <targets> <target android:excludeId="@id/toolbar"/> <target android:excludeClass=“android.support.v7.widget.Toolbar"/> <target android:excludeName="toolbar"/>
</targets> </fade>
Support for <21
Support for <21 ActivityOptions => ActivityOptionsCompat .makeSceneTransitionAnimation(activity, view, name)
Support for <21 startActivity(intent, transitionBundle); Has existed since API 16!
Support for <21 Transition names android:transitionName="name" is ignored on
older versions ViewCompat.setTransitionName(view, “name);
Support for <21 Delaying transitions supportPostponeEnterTransition(); supportStartPostponedEnterTransition();
Support for <21 Specifying transitions The only place we need
a version check if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { getWindow().setEnterTransition(new Fade()); }