Presentation About What’s New in Android Lollipop by Chet Haase & Romain Guy

1. What’s New in
Android

2. +ChetHaase
@chethaase
+RomainGuy
@romainguy

3. Android 5.0
Lollipop

5. Nexus SGalaxy
Nexus
Nexus 4
Nexus 7Nexus 5 Nexus 7
Nexus 10

11. By the Numbers
Google Play
1 million apps available (July 2013)
50 billion apps downloaded (May 2013)
Devices
1.5 million activations daily (March 2013)
1 billion users (June 2014)

12. Active Android Users
0
1
2008 2014
(Billions)

14. Focus on the User
=
Focus on Quality

15. Project Butter
Svelte
Volta

16. Project
Butter
Svelte
Volta

17. Project
Butter
Svelte
Volta

19. Lollipop

20. Android Design
Material Design
Tangible
surfaces
Bold, beautiful
aesthetic
Meaningful
motion
Adaptive
design

21. Material Design: Learn More About It!
• Material Design spec
·
www.google.com/design/spec
• Articles, DevBytes, DesignBytes, SDK Reference
·
developer.android.com

22. UI Toolkit
New theme
New widgets
New APIs

23. Material theme
theme=“Android.Material”
colors
icons
touch feedback ripples
activity transitions enabled

24. Theme colors
Grayscale assets
tinted by theme colors
colorPrimaryDark
colorAccent
colorControlNormal
colorControlActivated
colorControlHighlight
colorButtonNormal

25. Dynamic colors
Palette
Derives dominant colors from images
Available in v7 support library
Tinting drawables
Drawable.setTint()
Drawable.setTintMode()

26. Material Widgets
RecyclerView
aka, ListView2
CardView
Both in support library!
v7

27. Material APIs: Graphics
Realtime soft shadows
View.setElevation()
View.setTranslationZ()
Shaped views and shadows
Outline
View.setOutlineProvider()
View.setClipToOutline()

28. Material APIs:
Animations
Activity Transitions
With shared elements
Also, Fragment Transitions!
Animation curves
Time and space
Animated Reveal

29. Material APIs:
Iconography
Touch feedback ripples
RippleDrawable
Vector icons
VectorDrawable
AnimatedVectorDrawable
State animations
StateListAnimator
AnimatedStateListDrawable

30. VectorDrawable
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:height="128dp"
android:width="128dp"
android:viewportHeight="480"
android:viewportWidth="480" >
<group
android:name="root"
android:translateX="240.0"
android:translateY="240.0" >
<path
android:name="favorite"
android:fillColor="#ff000000"
android:pathData="M2.100006104,-6
C0.1449127197,-6,1.600006104,-5.975006104,0,-5.975006104
C-1.574996948,-5.975006104,0.00309753418,-6-1.949996948-6
C-4.492996216,-6,-5.949996948,-3.718399048,-5.949996948,-1.149993896
C-5.949996948,2.379302979,-5.699996948,5.100006104,0,5.100006104
C5.699996948,5.100006104,6,2.379302979,6,-1.149993896
C6,-3.718399048,4.643005371-6,2.100006104-6" />
</group>
</vector>

31. AnimatedVectorDrawable
AVD
VD
Object
AnimatorObject
Animator

32. Nested Scrolling
Delegate to scrollable parent containers when appropriate
ViewParent
onStartNestedScroll()
onNestedScroll()/onNestedPreScroll()
onNestedFling() / onNestedPreFling()

33. Render Thread
UI Thread: Create DisplayList
Render Thread: Process DisplayList
… and animations

34. Support Lib
CardView
RecyclerView
Palette
RoundedBitmapDrawable
ViewPropertyAnimatorCompat
NotificationCompat

35. WebView updates
Chromium M37
security, stability, bug fixes
New support for open standards
WebAudio
WebGL
WebRTC
Updates from Play Store

36. System UI

37. Document- Centric Apps
To create a new document:
Intent.FLAG_ACTIVITY_NEW_DOCUMENT
<activity documentLaunchMode=”always”>
Manage tasks via
ActivityManager.getAppTasks()

38. Material theme
background: card-shaped, shadow-casting
foreground: dark text and actions
all icons now treated as silhouettes
Accent color
Notification.Builder.setColor()
Everything else you know and love
Expanded views, action buttons,
custom views
Small icon badging
2014: Notifications in L

39. Heads-up notifications

40. Heads-up notifications
Reserved for things the user needs to deal with
High priority
Involving people
Makes noise
fullScreenIntent
Designed to be easy to act on
and easy to ignore!

41. CLICK!

42. PUBLIC
(anyone can read)
AUTHENTICATION
(the lockscreen)
SECRET
(only you know it’s there)
PRIVATE
(only you can read)
VISIBILITY_PUBLIC
• notifications that are safe
to show outside the
lockscreen, out in public, to
anyone
VISIBILITY_PRIVATE
(classic Android
notifications)
• only icons visible without
authentication
VISIBILITY_SECRET
• invisible until you unlock
SPHERES OF VISIBILITY
publicVersion

43. Media & Graphics

44. OpenGL
OpenGL ES 3.1
NDK and SDK bindings
Backward-compatible with OpenGL ES 2.0 and 3.0
Compute shaders & separate shaders
Shading language improvements
Manifest
<uses-feature android:glEsVersion=“0x00030001”/>
Android Extension Pack
Superset of OpenGL ES 3.1
Tessellation, geometry shaders, shader storage buffers, images, and
atomics, etc.

45. Camera and Audio
New android.hardware.camera2 APIs
Fine-grained capture and image processing
RAW capture (DNG)
Programmatically access available devices
New audio buffering and encoding capabilities
Lower-latency audio input

46. Other Media Enhancements
MediaSession
Respond to transport controls
MediaBrowser
Browse media content exposed by apps
MediaProjection
Screen and audio capture
PdfRenderer
Render PDF as a bitmap

47. System

48. ART
Replaces Dalvik
Available in KitKat
Now enabled by default
Faster! Better! Newer! Cooler!
Ahead-of-Time Compilation
Smaller GC pauses
Dedicated space for large objects (bitmaps)
Moving collector (background apps)
Android Runtime

49. Power: Project Volta
Battery stats
$ adb shell dumpsys batterystats
Global and per-UID statistics
options: --help
Battery Historian (github.com/google/battery-historian)
like systrace for power events
Measuring your app’s battery efficiency

50. Power: Battery Historian
# turn on full wakelock reporting
$ adb shell dumpsys batterystats --enable full-history
# clear out old stats
$ adb shell dumpsys batterystats --reset
# now run your app, collect data
$ adb bugreport > bugreport.txt
# visualize!
$ historian.py bugreport.txt > out.html
Example

51. Power: JobScheduler
You want to do some work when:
data is cheap/fast
device is plugged in or idle
Possible to do this manually
… but now there’s JobScheduler!
intelligent background processing

52. Power: JobScheduler
JobInfo uploadTask = new JobInfo.Builder(jobId, componentName)
.setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
.setRequiresCharging(true)
.setRequiresDeviceIdle(true)
.build();
JobScheduler jobScheduler = (JobScheduler)
context.getSystemService(Context.JOB_SCHEDULER_SERVICE);
jobScheduler.schedule(uploadTask);
example

53. Storage: DocumentTrees
If you’re using the new Storage Access Framework (API 19)
You can now ask for a whole directory!
@see Intent.ACTION_OPEN_DOCUMENT_TREE
Then explore the directory and its contents
@see DocumentsContract.buildChildDocumentsUriUsingTree(),
.buildDocumentUriUsingTree()
New tools for working with directories

54. Storage: getExternalMediaDirs
• Context.getExternalMediaDirs()
·
File[] array of package-specific places for media
• like Context.getExternalFilesDirs()
·
plus automatic MediaStore support
A clean, well-lighted place for media

55. Multi-Networking
When you need a particular kind of network connection
SMS
unmetered
specific carrier feature
ConnectivityManager.requestNetwork(NetworkRequest, NetworkCallback)

56. Bluetooth LE
Android 4.3: Bluetooth Low Energy (BLE)
New in Lollipop: BLE peripheral device support
Your app can can provide services and scan for services
android.bluetooth.le
" BluetoothLeScanner
" BluetoothLeAdvertiser

57. Enterprise & Education
Managed profile (Data segregation)
Profile vs. Device owner
DevicePolicyManager
Screen Pinning

58. The Lollipop Developer SDK
Download the SDK on d.android.com
And get developing!