Introduction to Android Wear

+PeterFriese
@peterfriese
#AndroidWear

• Launched automatically
Design Principles

• Glanceable
Design Principles

• Glanceable
• Suggest and Demand
Design Principles

• Glanceable
• Suggest and Demand
• Zero or low interaction
Design Principles

Notifications ApplicationsWatch Faces

Simple Notifications
Look, ma - no work required!

Intent viewIntent = new Intent(context, DummyActivity.class); 
 
PendingIntent viewPendingIntent = PendingIntent.getActivity(context, 0, viewIntent, 0); 
Notification notification = new NotificationCompat.Builder(context) 
.setSmallIcon(R.drawable.ic_launcher) 
.setSmallIcon(R.drawable.plane) 
.setContentTitle(String.format("Flight AW123 is ready to board", notificationId)) 
.setContentText("Please proceed to gate C 17 to board. Have a nice flight!") 
.setContentIntent(viewPendingIntent) 
.build(); 
 
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context); 
notificationManager.notify(notificationId++, notification); 
sendNotification()
Simple Notifications

BigPictureStyle
Enhanced Notifications

 
.setStyle( 
new NotificationCompat.BigPictureStyle() 
.bigPicture(BitmapFactory.decodeResource(context.getResources(),
R.drawable.sanfrancisco)) 
.setBigContentTitle("Flight AW123 is ready to board.") 
.setSummaryText("Please proceed to gate C 17 to board. Have a nice flight!")) 
.build(); 
 
sendNotification()
BigPictureStyle

 
.setStyle( 
new NotificationCompat.BigPictureStyle() 
.bigPicture(BitmapFactory.decodeResource(context.getResources(),
R.drawable.sanfrancisco)) 
.setBigContentTitle("Flight AW123 is ready to board.") 
.setSummaryText("Please proceed to gate C 17 to board. Have a nice flight!")) 
.build(); 
 
sendNotification()
BigPictureStyle
Create BigPictureStyle

ArrayList<Notification> pages = new ArrayList<Notification>(); 
pages.add(new NotificationCompat.Builder(context) 
.setContentTitle("Your seat") 
.setContentText("17A") 
.extend(new NotificationCompat.WearableExtender() 
.setBackground(BitmapFactory.decodeResource(context.getResources(),
R.drawable.a380_seat))) 
.build());
sendNotification()
Pages

.build());
sendNotification()
Pages
Create page with title

.build());
sendNotification()
Pages
Set background image

.setHintShowBackgroundOnly(true)
.setHintAvoidBackgroundClipping(true) 
.setHintScreenTimeout(NotificationCompat.WearableExtender.SCREEN_TIMEOUT_LONG) 
.setBackground(
BitmapFactory.decodeResource(
context.getResources(),
R.drawable.qrcode))) 
.build());
sendNotification()
Background Only Pages

.setHintShowBackgroundOnly(true)
.setHintAvoidBackgroundClipping(true) 
.setHintScreenTimeout(NotificationCompat.WearableExtender.SCREEN_TIMEOUT_LONG) 
.setBackground(
BitmapFactory.decodeResource(
context.getResources(),
R.drawable.qrcode))) 
.build());
sendNotification()
Background Only Pages
Show background only
Don’t clip on round displays
Extended timeout

// ... (set properties) 
.build());
.addPages(pages)) 
.build(); 
 
sendNotification()
Adding Pages to Notifications

.build());
.build(); 
 
sendNotification()
Build pages

.build());
.build(); 
 
sendNotification()
Add pages to notification

Voice Input

// Feedback intent 
Intent replyIntent = new Intent(context, DummyActivity.class); 
PendingIntent replyPendingIntent = PendingIntent.getActivity(context, 0, replyIntent, 0); 
 
String replyLabel = context.getResources().getString(R.string.reply_label); 
String[] cannedResponses = context.getResources().getStringArray(R.array.canned_responses); 
RemoteInput remoteInput = new RemoteInput.Builder(EXTRA_VOICE_REPLY) 
.setLabel(replyLabel) 
.setChoices(cannedResponses) 
.build(); 
 
NotificationCompat.Action replyAction = 
new NotificationCompat.Action.Builder(
R.drawable.chatbubble_working,
replyLabel,
replyPendingIntent) 
.addRemoteInput(remoteInput) 
.build();
sendNotification()
Voice Input

 
.build(); 
 
replyLabel,
.build();
sendNotification()
Voice Input
Create pending intent

 
.build(); 
 
replyLabel,
.build();
sendNotification()
Voice Input
Create RemoteInput with canned responses

 
.build(); 
 
replyLabel,
.build();
sendNotification()
Voice Input
Create wearable action

.build(); 
 
replyLabel,
.build();
.addPages(pages) 
.addAction(replyAction)) 
.build(); 
 
notificationManager.notify(notificationId++, notification);
 
sendNotification()
Voice Input
Create notification

.build(); 
 
replyLabel,
.build();
.addPages(pages) 
.addAction(replyAction)) 
.build(); 
 
notificationManager.notify(notificationId++, notification);
 
sendNotification()
Voice Input
Send notification

Intent intent = getIntent(); 
if (intent != null) {
Bundle remoteInputResults = RemoteInput.getResultsFromIntent(intent); 
if (remoteInputResults != null) { 
CharSequence utterance =
remoteInputResults.getCharSequence(Constants.EXTRA_VOICE_REPLY);
 
Toast.makeText(this, utterance, Toast.LENGTH_LONG).show(); 
}
}
ReceivingActivity.onCreate()
Receiving Voice Input

 
}
}
Get remote input

 
}
}
Unpack voice reply

Actions

Intent mapIntent = new Intent(Intent.ACTION_VIEW); 
Uri geoUri = Uri.parse("geo:0,0?q=" + Uri.encode("London Heathrow")); 
mapIntent.setData(geoUri); 
PendingIntent mapPendingIntent = PendingIntent.getActivity(context, 0, mapIntent, 0);
sendNotification()
Actions

PendingIntent mapPendingIntent = PendingIntent.getActivity(context, 0, mapIntent, 0); 
 
NotificationCompat.Action walkingDirectionsAction = 
R.drawable.ic_full_directions_walking, "Directions to gate", mapPendingIntent) 
.build();
sendNotification()
Actions

PendingIntent mapPendingIntent = PendingIntent.getActivity(context, 0, mapIntent, 0); 
 
NotificationCompat.Action walkingDirectionsAction = 
R.drawable.ic_full_directions_walking, "Directions to gate", mapPendingIntent) 
.build();
.addAction(walkingDirectionsAction) 
.addPages(pages) 
.addAction(replyAction) 
.addAction(walkingDirectionsAction)) 
.build(); 
sendNotification()
Actions

Launching
Wearable apps
Using app-provided
voice actions
Using the start
menu

<application 
android:icon="@drawable/greenlinelogo" 
android:label="@string/app_name" 
android:theme="@android:style/Theme.DeviceDefault" > 
<activity 
android:name="de.peterfriese.weartravel.MainActivity" 
android:label="@string/app_name_voice" > 
<intent-filter> 
<action android:name="android.intent.action.MAIN" /> 
 
<category android:name="android.intent.category.LAUNCHER" /> 
</intent-filter> 
</activity> 
</application> 
AndroidManifest.xml
Launching

<application 
android:icon="@drawable/greenlinelogo" 
android:label="@string/app_name" 
android:theme="@android:style/Theme.DeviceDefault" > 
<activity 
android:name="de.peterfriese.weartravel.MainActivity" 
android:label="@string/app_name_voice" > 
<intent-filter> 
<action android:name="android.intent.action.MAIN" /> 
 
<category android:name="android.intent.category.LAUNCHER" /> 
</intent-filter> 
</activity> 
</application> 
AndroidManifest.xml
Launching
Label for voice action

<android.support.wearable.view.BoxInsetLayout 
xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
android:layout_height="match_parent" 
android:layout_width="match_parent"> 
 
<FrameLayout 
android:id="@+id/frame_layout" 
android:layout_width="match_parent" 
app:layout_box="left|bottom|right"> 
 
<android.support.wearable.view.WearableListView 
android:id="@+id/checkin_list" 
android:layout_width="match_parent"> 
</android.support.wearable.view.WearableListView> 
</FrameLayout> 
</android.support.wearable.view.BoxInsetLayout>
activity_checkin.xml
Layout - List

<?xml version="1.0" encoding="utf-8"?> 
<merge xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto"> 
 
<android.support.wearable.view.CircledImageView 
android:id="@+id/image" 
android:alpha="0.5" 
android:layout_height="52dp" 
android:layout_marginLeft="16dp" 
android:layout_width="52dp" 
app:circle_border_color="#FFFFFFFF" 
app:circle_border_width="2dp" 
app:circle_color="#00000000" 
/> 
 
<TextView 
android:id="@+id/text" 
android:fontFamily="sans-serif-condensed-light" 
android:gravity="center_vertical" 
checkin_listview_item.xml
Layout - Item

<?xml version="1.0" encoding="utf-8"?> 
<merge xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto"> 
 
<android.support.wearable.view.CircledImageView 
android:id="@+id/image" 
android:layout_width="52dp" 
app:circle_border_color="#FFFFFFFF" 
app:circle_border_width="2dp" 
app:circle_color="#00000000" 
/> 
 
<TextView 
android:id="@+id/text" 
android:fontFamily="sans-serif-condensed-light" 
android:gravity="center_vertical" 
android:layout_marginRight="16dp" 
android:layout_width="wrap_content" 
android:textColor="@color/white" 
android:textSize="14sp" 
/> 
</merge>
Layout - Item
checkin_listview_item.xml

private final class MyItemView extends FrameLayout implements
WearableListView.OnCenterProximityListener { 
 
final CircledImageView image; 
final TextView text; 
 
public MyItemView(Context context) { 
super(context); 
View.inflate(context, R.layout.checkin_listview_item, this); 
image = (CircledImageView) findViewById(R.id.image); 
text = (TextView) findViewById(R.id.text); 
} 
 
@Override 
public void onCenterPosition(boolean b) { 
image.animate().scaleX(1f).scaleY(1f).alpha(1); 
text.animate().scaleX(1f).scaleY(1f).alpha(1); 
} 
 
@Override 
public void onNonCenterPosition(boolean b) { 
image.animate().scaleX(0.8f).scaleY(0.8f).alpha(0.6f); 
CheckInActivity.java
MyViewItem

private final class MyItemView extends FrameLayout implements
WearableListView.OnCenterProximityListener { 
 
final CircledImageView image; 
final TextView text; 
 
public MyItemView(Context context) { 
super(context); 
View.inflate(context, R.layout.checkin_listview_item, this); 
image = (CircledImageView) findViewById(R.id.image); 
text = (TextView) findViewById(R.id.text); 
} 
 
@Override 
public void onCenterPosition(boolean b) { 
image.animate().scaleX(1f).scaleY(1f).alpha(1); 
text.animate().scaleX(1f).scaleY(1f).alpha(1); 
} 
 
@Override 
public void onNonCenterPosition(boolean b) { 
image.animate().scaleX(0.8f).scaleY(0.8f).alpha(0.6f); 
text.animate().scaleX(0.8f).scaleY(0.8f).alpha(0.6f); 
} 
}
MyViewItem

public class CheckInActivity extends Activity implements WearableListView.ClickListener { 
 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_checkin); 
 
MyListAdapter adapter = new MyListAdapter(); 
 
WearableListView listView = (WearableListView) findViewById(R.id.checkin_list); 
listView.setAdapter(adapter); 
listView.setClickListener(CheckInActivity.this); 
} 
 
@Override 
public void onClick(WearableListView.ViewHolder viewHolder) { 
Toast.makeText(this, String.format("You selected item #%s",
viewHolder.getPosition()), Toast.LENGTH_SHORT).show(); 
} 
 
@Override 
public void onTopEmptyRegionClick() { 
Activity

public class CheckInActivity extends Activity implements WearableListView.ClickListener { 
 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_checkin); 
 
MyListAdapter adapter = new MyListAdapter(); 
 
WearableListView listView = (WearableListView) findViewById(R.id.checkin_list); 
listView.setAdapter(adapter); 
listView.setClickListener(CheckInActivity.this); 
} 
 
@Override 
public void onClick(WearableListView.ViewHolder viewHolder) { 
Toast.makeText(this, String.format("You selected item #%s",
viewHolder.getPosition()), Toast.LENGTH_SHORT).show(); 
} 
 
@Override 
public void onTopEmptyRegionClick() { 
Toast.makeText(this, "You tapped into the empty area above the list",
Toast.LENGTH_SHORT).show(); 
} 
Activity

• Square vs round
Design Principles

• Square vs round
• Ambient mode / low-bit
Design Principles

• Square vs round
• Ambient mode / low-bit
• Legibility
Design Principles
56° - Cloudy
56° - Cloudy

• Start using a sample
Developing
Watch Faces

• Start using a sample
• Add a new wearable module
Developing
Watch Faces

Architecture
Wearable App Mobile App
CanvasWatchFaceService
ConfigActivity
Engine
ConfigActivityWearableListenerService

Architecture
Wearable App
CanvasWatchFaceService
ConfigActivity
Engine
WearableListenerService

Engine
onCreate
onPropertiesChanged
onDraw
onTimeTick
onAmbientModeChanged
onVisibilityChanged

@Override 
public void onCreate(SurfaceHolder holder) { 
super.onCreate(holder); 
 
setWatchFaceStyle(new WatchFaceStyle.Builder(AnalogWatchFaceService.this) 
.setCardPeekMode(WatchFaceStyle.PEEK_MODE_SHORT) 
.setBackgroundVisibility(WatchFaceStyle.BACKGROUND_VISIBILITY_INTERRUPTIVE) 
.setShowSystemUiTime(false) 
.build()); 
 
Resources resources = AnalogWatchFaceService.this.getResources(); 
Drawable backgroundDrawable = resources.getDrawable(R.drawable.bg); 
mBackgroundBitmap = ((BitmapDrawable) backgroundDrawable).getBitmap(); 
 
mHourPaint = new Paint(); 
mHourPaint.setARGB(255, 200, 200, 200); 
mHourPaint.setStrokeWidth(5.f); 
mHourPaint.setAntiAlias(true); 
mHourPaint.setStrokeCap(Paint.Cap.ROUND);
onCreate
Lifecycle - initialise watch face elements

@Override 
 
.build()); 
 
 
onCreate
Single-line peek card
Do not show system time
Show background briefly for
interruptive cards

@Override 
 
.build()); 
 
 
onCreate
Load background image

@Override 
 
.build()); 
 
 
onCreate
Create styles for graphic objects

@Override 
public void onDraw(Canvas canvas, Rect bounds) { 
mTime.setToNow(); 
 
canvas.drawBitmap(mBackgroundScaledBitmap, 0, 0, null);
float centerX = width / 2f; 
float centerY = height / 2f; 
 
float innerTickRadius = centerX - 10; 
float outerTickRadius = centerX; 
for (int tickIndex = 0; tickIndex < 12; tickIndex++) { 
float tickRot = (float) (tickIndex * Math.PI * 2 / 12); 
float innerX = (float) Math.sin(tickRot) * innerTickRadius; 
float innerY = (float) -Math.cos(tickRot) * innerTickRadius; 
float outerX = (float) Math.sin(tickRot) * outerTickRadius; 
float outerY = (float) -Math.cos(tickRot) * outerTickRadius; 
canvas.drawLine(centerX + innerX, centerY + innerY, 
centerX + outerX, centerY + outerY, mTickPaint); 
} 
 
float secRot = mTime.second / 30f * (float) Math.PI; 
onDraw
Lifecycle - draw the watch face

@Override 
 
 
} 
 
onDraw
Update time
Draw background image

@Override 
 
 
} 
 
onDraw
Draw the ticks

 
} 
 
int minutes = mTime.minute; 
float minRot = minutes / 30f * (float) Math.PI; 
float hrRot = ((mTime.hour + (minutes / 60f)) / 6f ) * (float) Math.PI; 
 
float secLength = centerX - 20; 
float minLength = centerX - 40; 
float hrLength = centerX - 80; 
if (!isInAmbientMode()) { 
float secX = (float) Math.sin(secRot) * secLength; 
float secY = (float) -Math.cos(secRot) * secLength; 
canvas.drawLine(centerX, centerY, centerX + secX, centerY + secY, mSecondPaint); 
} 
 
onDraw
Determine hands geometry

} 
 
int minutes = mTime.minute; 
float minRot = minutes / 30f * (float) Math.PI; 
float hrRot = ((mTime.hour + (minutes / 60f)) / 6f ) * (float) Math.PI; 
 
float secLength = centerX - 20; 
float minLength = centerX - 40; 
float hrLength = centerX - 80; 
if (!isInAmbientMode()) { 
float secX = (float) Math.sin(secRot) * secLength; 
float secY = (float) -Math.cos(secRot) * secLength; 
canvas.drawLine(centerX, centerY, centerX + secX, centerY + secY, mSecondPaint); 
} 
 
float minX = (float) Math.sin(minRot) * minLength; 
float minY = (float) -Math.cos(minRot) * minLength; 
canvas.drawLine(centerX, centerY, centerX + minX, centerY + minY, mMinutePaint); 
 
float hrX = (float) Math.sin(hrRot) * hrLength; 
float hrY = (float) -Math.cos(hrRot) * hrLength; 
canvas.drawLine(centerX, centerY, centerX + hrX, centerY + hrY, mHourPaint); 
}
onDraw
Don’t draw seconds when in
ambient mode
Draw minutes hand
Draw hours hand

+PeterFriese
@
Thank you!
#AndroidWear
W
e’re
hiring!

+PeterFriese
@
Q & A
#AndroidWear
W
e’re
hiring!

Introduction to Android Wear

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