android.preview.support.v4.app

NotificationManagerCompat Compatibility library for NotificationManager with fallbacks for older platforms. 

android.preview.support.wearable.notifications

RemoteInput A RemoteInput specifies a response to be collected from the user as part of an intent being sent. 
RemoteInput.Builder Builder class for RemoteInput objects. 
WearableNotifications Helper providing extensions to android notifications for use with wearable devices. 
WearableNotifications.Action Subclass of NotificationCompat.Action which adds support for additional wearable extensions. 
WearableNotifications.Action.Builder Builder class for WearableNotifications.Action objects. 
WearableNotifications.Builder Builder object that wraps a NotificationCompat.Builder to provide methods for adding wearable extensions to a notification.