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What’s new in Android M

nuuneoi

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MStands for ...

mmmm

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MStands for ...

Preview

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Building M Preview Apps

Android M is now available on SDK Manager

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Building M Preview Apps

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Previewssssss

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OK. Let’s start.

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Apps PermissionFASTER INSTALLS • SMOOTHER UPGRADES • MORE USER

CONTROL

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Install-time permissions

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Runtime permissions in M

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User controls in M

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Everything you’ve ever asked for

But now your app has to deal with it

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Apps targeting M can: can ask for any permission at any timeLegacy apps will: get all permissions at install time, as beforeUsers can: deny any permissions upon request deny any permissions at any later time – even legacy appsTest!

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Voice Interactions

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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>

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Voice Interactions

public class MyVoiceActivity extends AppCompatActivity {

@Override protected void onResume() { super.onResume(); if (isVoiceInteraction()) { // do stuff } else { finish(); } }

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Voice Interactions

public class MyVoiceActivity extends AppCompatActivity {

@Override protected void onResume() { super.onResume(); if (isVoiceInteraction()) { String prompt = "..."; getVoiceInteractor().submitRequest( new Confirm(prompt)); } else { finish(); } }

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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 = "..."; getVoiceInteractor().submitRequest( new Confirm(prompt)); } else { finish(); } }

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FingerprintQUICK USER VERIFICATION

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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

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Android BackupRESTORATION SOFTWARE

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Android Backup

All data now backed up by default targetSdk M

Optional scheme file in xml/ resource dir includes/excludes

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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>

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Google Play Services

7.5 AND COUNTING

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GCM Network Manager

Like JobScheduler … but across releases

OneOffTaskPeriodicTask

Limit network requests to wifi, or charging, or …

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Also…

Maps on Android WearApp InvitesCast Remote DisplaySmart Lock for Passwords…

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PowerEVEN BETTER BATTERY LIFE

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Power improvements

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

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Assistant Support

CONTEXTUAL INFORMATION, WHEN THE USER NEEDS IT

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Assistant Support

New APIs to provide the assistant with relevant data

See SDK docs: Activity.onProvideAssistData(Bundle) Application.OnProvideAssistDataListener

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Data BindingBOUNDS AND DETERMINED

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Data Binding

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

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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>

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UI FeaturesALL ABOUT YOU AND I

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Android Design Support Library

Snackbar

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Android Design Support Library

SnackbarFAB

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Android Design Support Library

SnackbarFABCoordinatorLayout

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Android Design Support Library

SnackbarFABCoordinatorLayoutTabLayout

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Android Design Support Library

SnackbarFABCoordinatorLayoutTabLayoutTextInputLayout

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Android Design Support Library

SnackbarFABCoordinatorLayoutTabLayoutTextInputLayoutNavigationView

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Other UI Changes

RecyclerView ItemTouchHelper Swipe-to-dismiss

Drag & drop

WebView PostMessage

WebViewClient

WebSettings.setOffscreenPreRaster()

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NotificationsHEY! YOU THERE! LOOK UP HERE!

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android.graphics.drawable.Icon

Holds either: a drawable resource id

a Bitmap

a byte[] holding a PNG or JPEG

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Icons in Notifications

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

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Icons in Notifications

Icon ic = Icon.createWithBitmap(iconBitmap);

Notification no = Notification.Builder(context) .setSmallIcon(ic) ... .build();

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Text StuffsTEXT IS ALL AROUND

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Text Selection

Easier SelectionFloating palette with action items Default for TextView

Other views set ActionMode.TYPE_FLOATING

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Text Processing

<intent-filter> <action android:name="android.intent.action.PROCESS_TEXT"/></intent-filter>

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Higher Quality Text Formatting

TextView.setBreakStrategy(int);

TextView.setHyphenationFrequency(int);

TextView.setIndents(int[] left, int[] right);

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App LinksRELATIONSHIP BETWEEN APP AND WEB DOMAINS

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App Links

Understand the relationshipbetween an app and web domainsowned by the same developer

d.android.com/preview/features/app-linking.html

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[{  "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

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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

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<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

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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

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Direct ShareSHARING IS EVEN MORE AWESOME

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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 }}

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Stylus supportNOW THE PRESSURE IS REALLY ON

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Styluses: supported sinceICE_CREAM_SANDWICHMotionEvent APIs: TOOL_TYPE_STYLUS BUTTON_SECONDARY BUTTON_TERTIARY getPressure(), getSize(), getOrientation(), etc.

Until now, this only worked for wired/builtin digitizers

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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

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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

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Graphics & Media

IT’S ALL ABOUT THE PIXELS

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RenderScript Compute

BLAS intrinsics (Really big matrices)

Allocation-less launches Size of kernel separate from data

ScriptGroup More dependency types

Better compiler optimizations

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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) {}

}

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Alpha Optimization

Auto hardware layer for translucent Views

Call setLayerType() yourself still a Good idea

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MIDI

Your could already do this… … but it was a lot of work

Introducing … android.media.midi MidiDeviceManager MidiInputPort

MidiOutputPort

MidiDeviceService

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High Resolution Audio

Audio samples: single-precision float

Sample rate: 96 kHz

USB digital audio: multichannel

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ToolsMAKE IT HAPPENS

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Android Studio

Integrated testing supportData bindingVector drawablesNew annotationsAndroid NDK

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Systrace

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Systrace

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

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ART

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

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ART

Runtime stats Debug.getRuntimeStat(String)

“art.gc.gc-count”

“art.gc.gc-time”

…

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MiscREALLY IMPORTANT STUFF WE COULDN’T EASILY CATEGORIZE

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External Storage

“Adopt” permanent storageAvoid hard-coded pathsNo new APIs!For Preview testing: $ adb root && sleep 2

$ adb shell setprop persist.fw.force_adoptable 1

$ adb reboot

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Developing for Android

Guide for better mobile apps

medium.com/google-developers

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So what are you waiting for?

Preview: d.android.com/preview

SDK + Android Studio: d.android.com/sdk

System image: d.android.com/sdk

Report bugs: code.google.com/android-developer-preview

DevBytes: youtube.com/GoogleDevelopers

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Thank youQ&A