Android Wear Presentation

Introduction to Android Wear

Talk by Chua Zi Yonghttps://plus.google.com/+ZiYongChua

Join GDG Singapore as member

• Keep up to date with Google products and technologies

• Make new friends that are also passionate about technology

• Interact with Googlers

• Access to selected exclusive Google events

• Find jobs and developers related to Google products

• Contribute to developer community

Learn more at www.gdg-sg.org/member


Because pictures speak a thousand words


For more membership details,

Get started today with just your email.

Visit http://bit.ly/gdg-sg-members

http://bit.ly/gdg-sg-members

What is Android Wear?

Introduction to Android Wear by Chua Zi Yong - https://plus.google.com/+ZiYongChua



Notifications

Apps on Wear

Android Fit



Requires Android 4.3 and above Android device

Latest Google Play Services and Android Wear app from Google Play installed

Internet and connectivity over bluetooth from paired device

Limited function when connection is lost

Getting Started – Install SDK


Install the Android Wear SDK Tools from ADT

• Android ADT Revision v22.6 and above

• Android Wear ARM EABI v7a system image

• Update Android Support Library

Getting Started – Install emulator


To install and test Android Wear emulator, you need to (visit http://javapapers.com/android/android-wear-getting-started-tutorial/ for full details)

1) Sign up for developer preview http://developer.android.com/wear/preview/signup.html

2) Create AVD

3) Connect Android device over adb (adb -d forward tcp:5601 tcp:5601)

4) Install Android Wear Preview from Google Play

http://javapapers.com/android/android-wear-getting-started-tutorial/

http://developer.android.com/wear/preview/signup.html

Design for Wear


Wear apps should be

• Launched automatically

• Glance-able

• Works like a personal butler

• Zero to low interactions

Design for Wear


Two ways you can think of Wear Interactions

• Extension of existing Android app notifications to work better on Android Wear (existing notifications on phone already appears on Wear)

• Android Wear specific app

Notifications for Wear


Extending your existing notifications to Wear

• You can add voice input/actions directly from Wear

• You can add additional content in pages• By swiping left/right on the wearable

• You can stack multiple notifications



Adding actions to Wear (It is very simple)

• The same code before works the same on Wear (Including notification actions, big view)

• Use NotificationCompat.WearableExtender() for Wearable-only options (Appears only on Wear, not on phone)

• You can use addRemoteInput(remoteInput) to prompt user for voice input

• P.S. Always use the NotificationManagerCompat instead of NotificationManager (to support 4.1 and above features)



Adding actions to Wear (Eliza sample code)NotificationCompat.Builder builder = new NotificationCompat.Builder(this) // All the usual

stuffs .setContentTitle(getString(R.string.eliza)) .setContentText(mLastResponse) .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.bg_eliza)) .setSmallIcon(R.drawable.bg_eliza) .setPriority(NotificationCompat.PRIORITY_MIN);

Intent intent = new Intent(ACTION_RESPONSE); // Intent to do your stuff PendingIntent pendingIntent = PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_ONE_SHOT | PendingIntent.FLAG_CANCEL_CURRENT);

Notification notification = builder .extend(new NotificationCompat.WearableExtender() // New notification extension for Wear .addAction(new NotificationCompat.Action.Builder( R.drawable.ic_full_reply, getString(R.string.reply), pendingIntent) // Get voice input .addRemoteInput(new RemoteInput.Builder(EXTRA_REPLY) .setLabel(getString(R.string.reply)) .build()) .build())) .build();

NotificationManagerCompat.from(this).notify(0, notification);



Adding additional content in pages (many at one time)

• For example, showing results of nearby search

• First, create an array list of notifications

• Next, generate a notification for each page you want to display, and add them to your array list

• Last, use .addPages(List<Notifications>)to parse in your array list



Adding additional content in pages (one at a time)

• First, create the main (first) notification builder

• Next, create the new notification you want to insert

• Last, use .addPage(Notification) to add your notification



Adding additional content in pages NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this) // Main .setSmallIcon(R.drawable.new_message) .setContentTitle("Page 1") .setContentText("Short message") .setContentIntent(viewPendingIntent);

Notification secondPageNotification = new NotificationCompat.Builder(this) // Second Notification .build();

Notification twoPageNotification = new WearableExtender() .addPage(secondPageNotification) // Add second notification to main .extend(notificationBuilder) .build();

notificationManager = NotificationManagerCompat.from(this);notificationManager.notify(notificationId, twoPageNotification);



Stacking multiple notifications

• Use .setGroup(String key) to group your new notification to existing group

• Use notify() to send the notification to Wear



Stacking multiple notificationsfinal static String GROUP_KEY_EMAILS = "group_key_emails"; // Key for group ID

Notification notif = new NotificationCompat.Builder(mContext) .setContentTitle("New mail from " + sender1) .setContentText(subject1) .setSmallIcon(R.drawable.new_mail);

.setGroup(GROUP_KEY_EMAILS) // Set group ID into notification .build();

NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);notificationManager.notify(notificationId1, notif); // Send out the notification

Design for Wear


Two ways you can think of Wear Interactions

• Extension of existing Android app notifications to work better on Android Wear (existing notifications on phone already appears on Wear)

• Android Wear specific app

Wear App API Architecture


Phone APK Wear APK



Node API- Inform when Wear is connected

Message API- Manage API calls between devices

Data API- Centralized data storemanaged by GPS

GPS Magic



To start communicating with the Wearable, we need to initialize the GoogleApiClient on the phone APKmGoogleApiClient = new GoogleApiClient.Builder(this) .addApi(Wearable.API) .build();

mGoogleApiClient.connect();



WearableListenerService will handle all the callbacks from Google Play Services on wear

// Insert the service into the manifest of the Weak.apk, in this case name it// AppListenerService (subclass of Abstract class WearableListenerService)<service

android:name=“.AppListenerService”><intent-filter>

<actionandroid:name=“com.google.android.gms.wearable.BIND_LISTENER”/></intent-filter>

</service>



In AppListenerService.java, you can manage the callbacks from Node, Data and Message listeners

Add Voice Action to Wear


You can trigger your app through voice actions



Just add the intent filter to your WearActivitiy

<activity android:name=“MyWearActivity”><intent-filter>

<action android:name=“android.intent.action.SEND”/><category android:name =

“com.google.android.voicesearch.SELF_NOTE”/></intent-filter>

</activity>



Available commands today (approval process similar to Google Glass)

More details: https://developer.android.com/training/wearables/apps/voice.html



Alternatively, you can use “Start MyVoiceAction” to launch your app. Just declare in manifest under label.

<activity android:name=“MyWearActivity" Android:label=“MyVoiceAction"><intent-filter>

<action android:name="android.intent.action.MAIN" /><category

android:name="android.intent.category.LAUNCHER" /></intent-filter>

</activity>



For additional input, say “Take a note”, follow by user voice input, you can get the voice input by calling startActivityForResult

// Create an intent that can start the Speech Recognizer activityprivate void displaySpeechRecognizer() {

Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);

intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,

RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);

startActivityForResult(intent, SPEECH_REQUEST_CODE);}



Code Demo Time

Join GDG Singapore as member

• Keep up to date with Google products and technologies

• Make new friends that are also passionate about technology

• Interact with Googlers

• Access to selected exclusive Google events

• Find jobs and developers related to Google products

• Contribute to developer community



Because pictures speak a thousand words


For more membership details,

Get started today with just your email.

Visit http://bit.ly/gdg-sg-members

http://bit.ly/gdg-sg-members

Android Wear Presentation

Technology

Transcript of Android Wear Presentation