diff --git a/src/com/android/settings/applications/appinfo/AppNotificationPreferenceController.java b/src/com/android/settings/applications/appinfo/AppNotificationPreferenceController.java
index 87fa9ca..4c1f009 100644
--- a/src/com/android/settings/applications/appinfo/AppNotificationPreferenceController.java
+++ b/src/com/android/settings/applications/appinfo/AppNotificationPreferenceController.java
@@ -22,6 +22,7 @@
 import android.os.Bundle;
 import android.support.v7.preference.Preference;
 
+import com.android.settings.R;
 import com.android.settings.SettingsPreferenceFragment;
 import com.android.settings.notification.AppNotificationSettings;
 import com.android.settings.notification.NotificationBackend;
@@ -77,7 +78,18 @@
 
     public static CharSequence getNotificationSummary(NotificationBackend.AppRow appRow,
             Context context) {
-        // TODO: implement summary when it is known what it should say
-        return "";
+        if (appRow == null) {
+            return "";
+        }
+        if (appRow.banned || appRow.channelCount == appRow.blockedChannelCount) {
+            return context.getString(R.string.notifications_disabled);
+        } else {
+            if (appRow.blockedChannelCount == 0) {
+                return context.getString(R.string.notifications_enabled);
+            }
+            return context.getString(R.string.notifications_enabled_with_info,
+                    context.getResources().getQuantityString(R.plurals.notifications_categories_off,
+                            appRow.blockedChannelCount, appRow.blockedChannelCount));
+        }
     }
 }
diff --git a/src/com/android/settings/notification/NotificationBackend.java b/src/com/android/settings/notification/NotificationBackend.java
index 34b6ce5..62c8388 100644
--- a/src/com/android/settings/notification/NotificationBackend.java
+++ b/src/com/android/settings/notification/NotificationBackend.java
@@ -60,6 +60,8 @@
         row.banned = getNotificationsBanned(row.pkg, row.uid);
         row.showBadge = canShowBadge(row.pkg, row.uid);
         row.userId = UserHandle.getUserId(row.uid);
+        row.blockedChannelCount = getBlockedChannelCount(row.pkg, row.uid);
+        row.channelCount = getChannelCount(row.pkg, row.uid);
         return row;
     }
 
@@ -178,18 +180,6 @@
         }
     }
 
-    public NotificationChannelGroup getGroupWithChannels(String pkg, int uid, String groupId) {
-        if (groupId == null) {
-            return null;
-        }
-        try {
-            return sINM.getPopulatedNotificationChannelGroupForPackage(pkg, uid, groupId, true);
-        } catch (Exception e) {
-            Log.w(TAG, "Error calling NoMan", e);
-            return null;
-        }
-    }
-
     public ParceledListSlice<NotificationChannelGroup> getGroups(String pkg, int uid) {
         try {
             return sINM.getNotificationChannelGroupsForPackage(pkg, uid, false);
@@ -224,6 +214,15 @@
         }
     }
 
+    public int getBlockedChannelCount(String pkg, int uid) {
+        try {
+            return sINM.getBlockedChannelCount(pkg, uid);
+        } catch (Exception e) {
+            Log.w(TAG, "Error calling NoMan", e);
+            return 0;
+        }
+    }
+
     public boolean onlyHasDefaultChannel(String pkg, int uid) {
         try {
             return sINM.onlyHasDefaultChannel(pkg, uid);
@@ -233,6 +232,15 @@
         }
     }
 
+    public int getChannelCount(String pkg, int uid) {
+        try {
+            return sINM.getNumNotificationChannelsForPackage(pkg, uid, false);
+        } catch (Exception e) {
+            Log.w(TAG, "Error calling NoMan", e);
+            return 0;
+        }
+    }
+
     public List<NotifyingApp> getRecentApps() {
         try {
             return sINM.getRecentNotifyingAppsForUser(UserHandle.myUserId()).getList();
@@ -259,5 +267,7 @@
         public String lockedChannelId;
         public boolean showBadge;
         public int userId;
+        public int blockedChannelCount;
+        public int channelCount;
     }
 }
diff --git a/tests/robotests/src/com/android/settings/applications/appinfo/AppNotificationPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/applications/appinfo/AppNotificationPreferenceControllerTest.java
index 5d24180..a453f78 100644
--- a/tests/robotests/src/com/android/settings/applications/appinfo/AppNotificationPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/applications/appinfo/AppNotificationPreferenceControllerTest.java
@@ -105,4 +105,49 @@
         assertThat(controller.getArguments().containsKey(EXTRA_FRAGMENT_ARG_KEY)).isTrue();
         assertThat(controller.getArguments().getString(EXTRA_FRAGMENT_ARG_KEY)).isEqualTo("test");
     }
+
+    @Test
+    public void getNotificationSummary_noCrashOnNull() {
+        mController.getNotificationSummary(null, mContext);
+    }
+
+    @Test
+    public void getNotificationSummary_appBlocked() {
+        NotificationBackend.AppRow appRow = new NotificationBackend.AppRow();
+        appRow.banned = true;
+        appRow.blockedChannelCount = 30;
+        assertThat(mController.getNotificationSummary(appRow, mContext).toString())
+                .isEqualTo("Off");
+    }
+
+    @Test
+    public void getNotificationSummary_appNotBlockedAllChannelsBlocked() {
+        NotificationBackend.AppRow appRow = new NotificationBackend.AppRow();
+        appRow.banned = false;
+        appRow.blockedChannelCount = 30;
+        appRow.channelCount = 30;
+        assertThat(mController.getNotificationSummary(appRow, mContext).toString())
+                .isEqualTo("Off");
+    }
+
+    @Test
+    public void getNotificationSummary_appNotBlocked() {
+        NotificationBackend.AppRow appRow = new NotificationBackend.AppRow();
+        appRow.banned = false;
+        appRow.blockedChannelCount = 30;
+        appRow.channelCount = 60;
+        assertThat(mController.getNotificationSummary(
+                appRow, mContext).toString().contains("30")).isTrue();
+        assertThat(mController.getNotificationSummary(
+                appRow, mContext).toString().contains("On")).isTrue();
+    }
+
+    @Test
+    public void getNotificationSummary_channelsNotBlocked() {
+        NotificationBackend.AppRow appRow = new NotificationBackend.AppRow();
+        appRow.banned = false;
+        appRow.blockedChannelCount = 0;
+        appRow.channelCount = 10;
+        assertThat(mController.getNotificationSummary(appRow, mContext).toString()).isEqualTo("On");
+    }
 }