in Notifications/Wearable/src/main/java/com/example/android/wearable/wear/wearnotifications/StandaloneMainActivity.java [624:777]
private void generateMessagingStyleNotification() {
Log.d(TAG, "generateMessagingStyleNotification()");
// Main steps for building a MESSAGING_STYLE notification:
// 0. Get your data
// 1. Create/Retrieve Notification Channel for O and beyond devices (26+)
// 2. Build the MESSAGING_STYLE
// 3. Set up main Intent for notification
// 4. Set up RemoteInput (users can input directly from notification)
// 5. Build and issue the notification
// 0. Get your data (everything unique per Notification).
MockDatabase.MessagingStyleCommsAppData messagingStyleCommsAppData =
MockDatabase.getMessagingStyleData(getApplicationContext());
// 1. Create/Retrieve Notification Channel for O and beyond devices (26+).
String notificationChannelId =
NotificationUtil.createNotificationChannel(this, messagingStyleCommsAppData);
// 2. Build the Notification.Style (MESSAGING_STYLE).
String contentTitle = messagingStyleCommsAppData.getContentTitle();
MessagingStyle messagingStyle =
new NotificationCompat.MessagingStyle(messagingStyleCommsAppData.getMe())
/*
* <p>This API's behavior was changed in SDK version
* {@link Build.VERSION_CODES#P}. If your application's target version is
* less than {@link Build.VERSION_CODES#P}, setting a conversation title to
* a non-null value will make {@link #isGroupConversation()} return
* {@code true} and passing {@code null} will make it return {@code false}.
* This behavior can be overridden by calling
* {@link #setGroupConversation(boolean)} regardless of SDK version.
* In {@code P} and above, this method does not affect group conversation
* settings.
*
* In our case, we use the same title.
*/
.setConversationTitle(contentTitle);
// Adds all Messages.
// Note: Messages include the text, timestamp, and sender.
for (MessagingStyle.Message message : messagingStyleCommsAppData.getMessages()) {
messagingStyle.addMessage(message);
}
messagingStyle.setGroupConversation(messagingStyleCommsAppData.isGroupConversation());
// 3. Set up main Intent for notification.
Intent notifyIntent = new Intent(this, MessagingMainActivity.class);
PendingIntent mainPendingIntent =
PendingIntent.getActivity(
this,
0,
notifyIntent,
PendingIntent.FLAG_UPDATE_CURRENT
);
// 4. Set up a RemoteInput Action, so users can input (keyboard, drawing, voice) directly
// from the notification without entering the app.
// Create the RemoteInput specifying this key.
String replyLabel = getString(R.string.reply_label);
RemoteInput remoteInput = new RemoteInput.Builder(MessagingIntentService.EXTRA_REPLY)
.setLabel(replyLabel)
// Use machine learning to create responses based on previous messages.
.setChoices(messagingStyleCommsAppData.getReplyChoicesBasedOnLastMessage())
.build();
// Create PendingIntent for service that handles input.
Intent replyIntent = new Intent(this, MessagingIntentService.class);
replyIntent.setAction(MessagingIntentService.ACTION_REPLY);
PendingIntent replyActionPendingIntent = PendingIntent.getService(this, 0, replyIntent, 0);
// Enable action to appear inline on Wear 2.0 (24+). This means it will appear over the
// lower portion of the Notification for easy action (only possible for one action).
final NotificationCompat.Action.WearableExtender inlineActionForWear2 =
new NotificationCompat.Action.WearableExtender()
.setHintDisplayActionInline(true)
.setHintLaunchesActivity(false);
NotificationCompat.Action replyAction =
new NotificationCompat.Action.Builder(
R.drawable.ic_reply_white_18dp,
replyLabel,
replyActionPendingIntent)
.addRemoteInput(remoteInput)
// Informs system we aren't bringing up our own custom UI for a reply
// action.
.setShowsUserInterface(false)
// Allows system to generate replies by context of conversation.
.setAllowGeneratedReplies(true)
// Add WearableExtender to enable inline actions.
.setSemanticAction(Action.SEMANTIC_ACTION_REPLY)
.extend(inlineActionForWear2)
.build();
// 5. Build and issue the notification.
// Because we want this to be a new notification (not updating current notification), we
// create a new Builder. Later, we update this same notification, so we need to save this
// Builder globally (as outlined earlier).
// Notification Channel Id is ignored for Android pre O (26).
NotificationCompat.Builder notificationCompatBuilder =
new NotificationCompat.Builder(
getApplicationContext(), notificationChannelId);
GlobalNotificationBuilder.setNotificationCompatBuilderInstance(notificationCompatBuilder);
notificationCompatBuilder
// MESSAGING_STYLE sets title and content for Wear 1.+ and Wear 2.0 devices.
.setStyle(messagingStyle)
.setContentTitle(contentTitle)
.setContentText(messagingStyleCommsAppData.getContentText())
.setSmallIcon(R.drawable.ic_launcher)
.setLargeIcon(BitmapFactory.decodeResource(
getResources(),
R.drawable.ic_person_black_48dp))
.setContentIntent(mainPendingIntent)
.setDefaults(NotificationCompat.DEFAULT_ALL)
// Set primary color (important for Wear 2.0 Notifications).
.setColor(ContextCompat.getColor(getApplicationContext(), R.color.colorPrimary))
// Number of new notifications for API <24 (Wear 1.+) devices.
.setSubText(Integer.toString(messagingStyleCommsAppData.getNumberOfNewMessages()))
.addAction(replyAction)
.setCategory(Notification.CATEGORY_MESSAGE)
// Sets priority for 25 and below. For 26 and above, 'priority' is deprecated for
// 'importance' which is set in the NotificationChannel. The integers representing
// 'priority' are different from 'importance', so make sure you don't mix them.
.setPriority(messagingStyleCommsAppData.getPriority())
// Sets lock-screen visibility for 25 and below. For 26 and above, lock screen
// visibility is set in the NotificationChannel.
.setVisibility(messagingStyleCommsAppData.getChannelLockscreenVisibility());
// If the phone is in "Do not disturb" mode, the user may still be notified if the
// sender(s) are in a group allowed through "Do not disturb" by the user.
for (Person person : messagingStyleCommsAppData.getParticipants()) {
notificationCompatBuilder.addPerson(person.getUri());
}
Notification notification = notificationCompatBuilder.build();
mNotificationManagerCompat.notify(NOTIFICATION_ID, notification);
// Close app to demonstrate notification in steam.
finish();
}