В презентации рассмотрены основные отличия Android M от предшествующих версий.

1. What’s new in Android M

2. Building M Preview Apps
Android M is now available on SDK Manager

3. Building M Preview Apps

4. Previewssssss

5. OK. Let’s start.

6. Apps Permission
FASTER INSTALLS • SMOOTHER UPGRADES • MORE USER CONTROL

7. Install-time permissions

8. Runtime permissions in M

9. User controls in M

10. Everything you’ve ever asked for
But now your app has to deal with it

11. Apps targeting M can:
can ask for any permission at any time
Legacy apps will:
get all permissions at install time, as before
Users can:
deny any permissions upon request
deny any permissions at any later time – even legacy apps

12. Voice Interactions

13. Voice Interactions
VoiceInteractor – confirm and prompt for response
<activity android:name="org.example.MyVoiceActivity">
<intent-filter>
<action android:name="org.example.MY_ACTION_INTENT" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.VOICE" />
</intent-filter>
</activity>

14. Voice Interactions
public class MyVoiceActivity
extends AppCompatActivity {
@Override
protected void onResume() {
super.onResume();
if (isVoiceInteraction()) {
// do stuff
} else {
finish();
}
}

15. Voice Interactions
public class MyVoiceActivity
extends AppCompatActivity {
@Override
protected void onResume() {
super.onResume();
if (isVoiceInteraction()) {
String prompt = "...";
getVoiceInteractor().submitRequest(
new Confirm(prompt));
} else {
finish();
}
}

16. Voice Interactions
public class Confirm extends
VoiceInteractor.ConfirmationRequest {
public Confirm(String prompt) {
super(prompt, null);
}
@Override
public void onConfirmationResult(
boolean confirmed, Bundle result) {
if (confirmed) {
// do stuff
}
}
}
public class MyVoiceActivity
extends AppCompatActivity {
@Override
protected void onResume() {
super.onResume();
if (isVoiceInteraction()) {
String prompt = “Are you sure?";
getVoiceInteractor().submitRequest(
new Confirm(prompt));
} else {
finish();
}
}

17. Fingerprint
QUICK USER VERIFICATION

18. Two APIs for fingerprints
FingerprintManager.authenticate()
Verify that authorized user is present
Your app controls all UI
KeyguardManager.createConfirmDeviceCredentialIntent()
Present lock screen to user
startActivityForResult(), check for RESULT_OK
Sample code
github.com/googlesamples/android-FingerprintDialog
github.com/googlesamples/android-ConfirmCredential

19. Android Backup
RESTORATION SOFTWARE

20. Android Backup
All data now backed up by default
targetSdk M
Optional scheme file in xml/ resource dir
includes/excludes

21. Android Backup
AndroidManifest.xml
<application android:fullBackupContent="@xml/mybackupscheme">
...
</application>
res/xml/mybackupscheme.xml
<full-backup-content>
<exclude domain="database" path="device_info.db"/>
</full-backup-content>
or
<full-backup-content>
<include domain="file" path="mydata/allthatmatters.txt"/>
</full-backup-content>

22. Google Play Services
7.5 AND COUNTING

23. GCM Network Manager
Like JobScheduler
… but across releases
OneOffTask
PeriodicTask
Limit network requests to wifi, or charging, or …

24. Also…
Maps on Android Wear
App Invites
Cast Remote Display
Smart Lock for Passwords
…

25. Power
EVEN BETTER BATTERY LIFE

26. Power improvements
Better screen-off battery life
Doze
Untouched devices become “inactive”
Wait longer to wake up for background tasks
Resume normal operation when moved, used, or plugged in
App standby
Unused apps lose network access
Resume when launched/used or when plugged in

27. Assistant Support
CONTEXTUAL INFORMATION, WHEN THE USER NEEDS IT

28. Assistant Support
New APIs to provide the assistant with relevant data
See SDK docs:
Activity.onProvideAssistData(Bundle)
Application.OnProvideAssistDataListener

29. Data Binding
BOUNDS AND DETERMINED

30. Data Binding
Connecting data and UI elements
Automates listener creation, message sending, setters, …
Pre-processed at build time

31. Data Binding
<layout>
<data>
<variable name="item" type="com.android.example.store.Item"/>
</data>
<FrameLayout ...>
<ImageView ... android:src="@{item.image}" />
<TextView ... android:text="@{@string/price(item.dollars, item.cents)}" />
</FrameLayout>
</layout>

32. UI Features
ALL ABOUT YOU AND I

33. Android Design Support Library
Snackbar

34. Android Design Support Library
Snackbar
FAB

35. Android Design Support Library
Snackbar
FAB
CoordinatorLayout

36. Android Design Support Library
Snackbar
FAB
CoordinatorLayout
TabLayout

37. Android Design Support Library
Snackbar
FAB
CoordinatorLayout
TabLayout
TextInputLayout

38. Android Design Support Library
Snackbar
FAB
CoordinatorLayout
TabLayout
TextInputLayout
NavigationView

39. Other UI Changes
RecyclerView ItemTouchHelper
Swipe-to-dismiss
Drag & drop

40. Notifications
HEY! YOU THERE! LOOK UP HERE!

41. android.graphics.drawable.Icon
Holds either:
a drawable resource id
a Bitmap
a byte[] holding a PNG or JPEG

42. Icons in Notifications
Icon ic = Icon.createWithResource(context,
R.drawable.ic_notification);
Notification no = Notification.Builder(context)
.setSmallIcon(ic)
...
.build();

43. Icons in Notifications
Icon ic = Icon.createWithBitmap(iconBitmap);
Notification no = Notification.Builder(context)
.setSmallIcon(ic)
...
.build();

44. Text Stuffs
TEXT IS ALL AROUND

45. Text Selection
Easier Selection
Floating palette with action items
Default for TextView
Other views
set ActionMode.TYPE_FLOATING

46. App Links
RELATIONSHIP BETWEEN APP AND WEB DOMAINS

47. App Links
Understand the relationship
between an app and web domains
owned by the same developer
d.android.com/preview/features/app-linking.html

48. [{
"relation": ["delegate_permission/common.handle_all_urls"],
"target": {
"namespace": "android_app",
"package_name": “com.example.myapp",
"sha256_cert_fingerprints": ["6C:EC:C5:0E:34:AE....EB:0C:9B"]
}
}]
http://example.com/.well-known/statements.json
https: for M final
keytool -list -v -keystore release.keystore

49. Establishing app links
At install time
Package Manager fetches statements.json
Matches hash to APK’s signing certificate
These links will now launch your app
On failure, a link is not created
Usual intent chooser will be shown
Users can review & modify app links
Settings -> Apps -> (Your App) -> Open by default

50. <activity ...>
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="http" android:host=“example.com" />
<data android:scheme="http" android:host="www.example.com" />
</intent-filter>
</activity>
AndroidManifest.xml
This is where we will look for /.well-known/statements.json

51. Establishing app links
At install time
Package Manager fetches statements.json
Matches hash to APK’s signing certificate
These links will now launch your app
On failure, a link is not created
Usual intent chooser will be shown
Users can review & modify app links
Settings -> Apps -> (Your App) -> Open by default

52. Direct Share
SHARING IS EVEN MORE AWESOME

53. Direct Share
<activity ...>
<intent-filter>
<action android:name="android.intent.action.SEND" />
</intent-filter>
<meta-data android:name="android.service.chooser.chooser_target_service"
android:value=".MyChooserTargetService" />
</activity>
<service android:name=".MyChooserTargetService"
android:permission="android.permission.BIND_CHOOSER_TARGET_SERVICE">
<intent-filter>
<action android:name="android.service.chooser.ChooserTargetService" />
</intent-filter>
</service>
public class MyChooserTargetService extends ChooserTargetService {
@Override
public List<ChooserTarget> onGetChooserTargets(ComponentName targetActivityName,
IntentFilter matchedFilter) {
// do stuff
}
}

54. Stylus support
NOW THE PRESSURE IS REALLY ON

55. Styluses: supported since
ICE_CREAM_SANDWICH
MotionEvent APIs:
TOOL_TYPE_STYLUS
BUTTON_SECONDARY
BUTTON_TERTIARY
getPressure(), getSize(), getOrientation(), etc.
Until now, this only worked for wired/builtin digitizers

56. Bluetooth stylus support
Want to make a Bluetooth stylus?
Report pressure and buttons using Bluetooth HID
Android M will fuse this with touch events
Result touch stream will be TOOL_TYPE_STYLUS
(or TOOL_TYPE_ERASER)
Bluetooth stylus support for every app and every M device

57. New stylus API in M
Button support
ACTION_BUTTON_PRESS, ACTION_BUTTON_RELEASE,
BUTTON_STYLUS_PRIMARY, BUTTON_STYLUS_SECONDARY
Gesture support
ScaleGestureDetector.setStylusScaleEnabled(bool)
Quick scale with button-click+drag
OnGestureListener.onStylusButtonPress
Use this for selection & drag-and-drop

58. Graphics & Media
IT’S ALL ABOUT THE PIXELS

59. RenderScript Compute
BLAS intrinsics
(Really big matrices)
Allocation-less launches
Size of kernel separate from data
ScriptGroup
More dependency types
Better compiler optimizations

60. Camera
New Torch mode
Independent of camera device
CameraManager.setTorchMode(String cameraId, boolean enabled);
public abstract class CameraManager.TorchCallback {
public void onTorchModeUnavailable(String cameraId) {}
public void onTorchModeChanged(String cameraId, boolean enabled) {}
}

61. MIDI
Your could already do this…
… but it was a lot of work
Introducing … android.media.midi
MidiDeviceManager
MidiInputPort
MidiOutputPort
MidiDeviceService

62. High Resolution Audio
Audio samples: single-precision float
Sample rate: 96 kHz
USB digital audio: multichannel

63. Tools
MAKE IT HAPPENS

64. Android Studio
Integrated testing support
Data binding
Vector drawables
New annotations
Android NDK

65. Systrace

66. Systrace
ListView item recycling involved inflating views. Ensure
Your Adapter#getView() recycles the incoming View,
Instead of constructing a new one.

67. ART
Compiler optimizations
register allocator
global value number
loop-invariant code motion
dead code elimination
bounds check elimination
constant folding
inlining

68. ART
Runtime stats
Debug.getRuntimeStat(String)
“art.gc.gc-count”
“art.gc.gc-time”
…

103. Thank you
Q&A