Intent actionIntent = new Intent(this, WearActivity.class);
PendingIntent actionPendingIntent = PendingIntent.getActivity(this, 0, actionIntent, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Action wearableAction = new NotificationCompat.Action.Builder(R.drawable.ic_launcher, getString(R.string.label_show_details), actionPendingIntent).build();
new WearableExtender().addAction(wearableAction))