* Below is an example manifest registration for an {@code InCallService}. The meta-data - * ({@link TelecomManager#METADATA_IN_CALL_SERVICE_UI}) indicates that this particular + * {@link TelecomManager#METADATA_IN_CALL_SERVICE_UI} indicates that this particular * {@code InCallService} implementation intends to replace the built-in in-call UI. + * The meta-data {@link TelecomManager#METADATA_IN_CALL_SERVICE_RINGING} indicates that this + * {@link InCallService} will play the ringtone for incoming calls. See + * below for more information on showing the incoming call + * UI and playing the ringtone in your app. *
* {@code
*
*
*
@@ -80,6 +86,72 @@ import java.util.List;
* to see if they would like your application to be the new default phone app. See the
* {@link TelecomManager#ACTION_CHANGE_DEFAULT_DIALER} intent documentation for more information on
* how to do this.
+ *
+ *
Showing the Incoming Call Notification
+ * When your app receives a new incoming call via {@link InCallService#onCallAdded(Call)}, it is
+ * responsible for displaying an incoming call UI for the incoming call. It should do this using
+ * {@link android.app.NotificationManager} APIs to post a new incoming call notification.
+ *
+ * Where your app declares the meta-data {@link TelecomManager#METADATA_IN_CALL_SERVICE_RINGING}, it
+ * is responsible for playing the ringtone for incoming calls. Your app should create a
+ * {@link android.app.NotificationChannel} which specifies the desired ringtone. For example:
+ *
+ * NotificationChannel channel = new NotificationChannel(YOUR_CHANNEL_ID, "Incoming Calls",
+ * NotificationManager.IMPORTANCE_MAX);
+ * // other channel setup stuff goes here.
+ *
+ * // We'll use the default system ringtone for our incoming call notification channel. You can
+ * // use your own audio resource here.
+ * Uri ringtoneUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE);
+ * channel.setSound(ringtoneUri, new AudioAttributes.Builder()
+ * // Setting the AudioAttributes is important as it identifies the purpose of your
+ * // notification sound.
+ * .setUsage(AudioAttributes.USAGE_NOTIFICATION_RINGTONE)
+ * .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
+ * .build());
+ *
+ * NotificationManager mgr = getSystemService(NotificationManager.class);
+ * mgr.createNotificationChannel(channel);
+ *
+ *
+ * When your app receives a new incoming call, it creates a {@link android.app.Notification} for the
+ * incoming call and associates it with your incoming call notification channel. You can specify a
+ * {@link android.app.PendingIntent} on the notification which will launch your full screen
+ * incoming call UI. The notification manager framework will display your notification as a
+ * heads-up notification if the user is actively using the phone. When the user is not using the
+ * phone, your full-screen incoming call UI is used instead.
+ * For example:
+ *
+ * // Create an intent which triggers your fullscreen incoming call user interface.
+ * Intent intent = new Intent(Intent.ACTION_MAIN, null);
+ * intent.setFlags(Intent.FLAG_ACTIVITY_NO_USER_ACTION | Intent.FLAG_ACTIVITY_NEW_TASK);
+ * intent.setClass(context, YourIncomingCallActivity.class);
+ * PendingIntent pendingIntent = PendingIntent.getActivity(context, 1, intent, 0);
+ *
+ * // Build the notification as an ongoing high priority item; this ensures it will show as
+ * // a heads up notification which slides down over top of the current content.
+ * final Notification.Builder builder = new Notification.Builder(context);
+ * builder.setOngoing(true);
+ * builder.setPriority(Notification.PRIORITY_HIGH);
+ *
+ * // Set notification content intent to take user to the fullscreen UI if user taps on the
+ * // notification body.
+ * builder.setContentIntent(pendingIntent);
+ * // Set full screen intent to trigger display of the fullscreen UI when the notification
+ * // manager deems it appropriate.
+ * builder.setFullScreenIntent(pendingIntent, true);
+ *
+ * // Setup notification content.
+ * builder.setSmallIcon( yourIconResourceId );
+ * builder.setContentTitle("Your notification title");
+ * builder.setContentText("Your notification content.");
+ *
+ * // Use builder.addAction(..) to add buttons to answer or reject the call.
+ *
+ * NotificationManager notificationManager = mContext.getSystemService(
+ * NotificationManager.class);
+ * notificationManager.notify(YOUR_CHANNEL_ID, YOUR_TAG, YOUR_ID, builder.build());
+ *
*/
public abstract class InCallService extends Service {