diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index 324f117..7672e55 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -33,7 +33,7 @@
     // The view became hidden.
     TYPE_CLOSE = 2;
 
-    // The view switched to detail mode (most relevant for quick settings tiles)
+    // The view switched to detail mode (most relevant for quick settings tiles and notifications)
     TYPE_DETAIL = 3;
 
     // The view or control was activated.
@@ -70,6 +70,9 @@
     // Type for APP_TRANSITION_REPORTED_DRAWN event: The activity was started with restoring from
     // a bundle.
     TYPE_TRANSITION_REPORTED_DRAWN_WITH_BUNDLE = 13;
+
+    // The view switched to summary mode (most relevant for notifications)
+    TYPE_COLLAPSE = 14;
   }
 
   // Types of alerts, as bit field values
diff --git a/services/core/java/com/android/server/notification/NotificationManagerService.java b/services/core/java/com/android/server/notification/NotificationManagerService.java
index 79a8dd8..fac498c 100644
--- a/services/core/java/com/android/server/notification/NotificationManagerService.java
+++ b/services/core/java/com/android/server/notification/NotificationManagerService.java
@@ -756,10 +756,11 @@
                 if (r != null) {
                     r.stats.onExpansionChanged(userAction, expanded);
                     final long now = System.currentTimeMillis();
-                    if (userAction && expanded) {
+                    if (userAction) {
                         MetricsLogger.action(r.getLogMaker(now)
                                 .setCategory(MetricsEvent.NOTIFICATION_ITEM)
-                                .setType(MetricsEvent.TYPE_DETAIL));
+                                .setType(expanded ? MetricsEvent.TYPE_DETAIL
+                                        : MetricsEvent.TYPE_COLLAPSE));
                     }
                     EventLogTags.writeNotificationExpansion(key,
                             userAction ? 1 : 0, expanded ? 1 : 0,