diff --git a/core/java/android/view/NotificationHeaderView.java b/core/java/android/view/NotificationHeaderView.java
index 6e6baea..3069e5a 100644
--- a/core/java/android/view/NotificationHeaderView.java
+++ b/core/java/android/view/NotificationHeaderView.java
@@ -21,9 +21,9 @@
 import android.graphics.Canvas;
 import android.graphics.Outline;
 import android.graphics.Rect;
-import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.Drawable;
 import android.util.AttributeSet;
+import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.ImageView;
 import android.widget.RemoteViews;
 
@@ -230,6 +230,7 @@
     public void setOnClickListener(@Nullable OnClickListener l) {
         mExpandClickListener = l;
         setOnTouchListener(mExpandClickListener != null ? mTouchListener : null);
+        setFocusable(l != null);
         updateTouchListener();
     }
 
@@ -379,6 +380,19 @@
         return this;
     }
 
+    @Override
+    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
+        super.onInitializeAccessibilityNodeInfo(info);
+        if (mExpandClickListener != null) {
+            AccessibilityNodeInfo.AccessibilityAction expand
+                    = new AccessibilityNodeInfo.AccessibilityAction(
+                    AccessibilityNodeInfo.ACTION_CLICK,
+                    getContext().getString(
+                            com.android.internal.R.string.expand_action_accessibility));
+            info.addAction(expand);
+        }
+    }
+
     public ImageView getExpandButton() {
         return mExpandButton;
     }
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index c99a882..76d39e7 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -4267,7 +4267,7 @@
     <string name="expand_button_content_description">Expand button</string>
 
     <!-- Accessibility action description on the expand button. -->
-    <string name="expand_action_accessibility">Click to expand</string>
+    <string name="expand_action_accessibility">toggle expansion</string>
 
     <!-- User visible name for USB MIDI Peripheral port -->
     <string name="usb_midi_peripheral_name">Android USB Peripheral Port</string>
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 1e4b012..0aa0babf 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -2568,6 +2568,7 @@
 
   <!-- WallpaperManager config -->
   <java-symbol type="string" name="config_wallpaperCropperPackage" />
+  <java-symbol type="string" name="expand_action_accessibility" />
 
   <java-symbol type="id" name="textSpacerNoTitle" />
   <java-symbol type="id" name="titleDividerNoCustom" />
diff --git a/packages/SystemUI/res/values/strings.xml b/packages/SystemUI/res/values/strings.xml
index 2758551..f7a169c 100644
--- a/packages/SystemUI/res/values/strings.xml
+++ b/packages/SystemUI/res/values/strings.xml
@@ -594,6 +594,12 @@
     <!-- The overflow indicator shown when a group has more notification inside the group than the visible ones. An example is "+ 3" [CHAR LIMIT=5] -->
     <string name="notification_group_overflow_indicator">+ <xliff:g id="number" example="3">%s</xliff:g></string>
 
+    <!-- Content description describing how many more notifications are in a group [CHAR LIMIT=NONE] -->
+    <plurals name="notification_group_overflow_description">
+        <item quantity="one"><xliff:g id="number" example="1">%s</xliff:g> more notification inside.</item>
+        <item quantity="other"><xliff:g id="number" example="3">%s</xliff:g> more notifications inside.</item>
+    </plurals>
+
     <!-- Content description of button in notification inspector for system settings relating to
          notifications from this application [CHAR LIMIT=NONE] -->
     <string name="status_bar_notification_inspect_item_title">Notification settings</string>
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableNotificationRow.java b/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableNotificationRow.java
index c53ab59..e55b0f4 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableNotificationRow.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/ExpandableNotificationRow.java
@@ -18,10 +18,9 @@
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
-import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
-import android.animation.ValueAnimator;
 import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.annotation.Nullable;
 import android.content.Context;
 import android.graphics.drawable.AnimatedVectorDrawable;
 import android.graphics.drawable.AnimationDrawable;
@@ -173,6 +172,7 @@
                     return object.getTranslation();
                 }
     };
+    private OnClickListener mOnClickListener;
 
     public boolean isGroupExpansionChanging() {
         if (isChildInGroup()) {
@@ -374,6 +374,7 @@
         mNotificationParent = childInGroup ? parent : null;
         mPrivateLayout.setIsChildInGroup(childInGroup);
         updateBackgroundForGroupState();
+        updateClickAndFocus();
         if (mNotificationParent != null) {
             mNotificationParent.updateBackgroundForGroupState();
         }
@@ -585,6 +586,24 @@
         mOnExpandClickListener = onExpandClickListener;
     }
 
+    @Override
+    public void setOnClickListener(@Nullable OnClickListener l) {
+        super.setOnClickListener(l);
+        mOnClickListener = l;
+        updateClickAndFocus();
+    }
+
+    private void updateClickAndFocus() {
+        boolean normalChild = !isChildInGroup() || isGroupExpanded();
+        boolean clickable = mOnClickListener != null && normalChild;
+        if (isFocusable() != normalChild) {
+            setFocusable(normalChild);
+        }
+        if (isClickable() != clickable) {
+            setClickable(clickable);
+        }
+    }
+
     public void setHeadsUpManager(HeadsUpManager headsUpManager) {
         mHeadsUpManager = headsUpManager;
     }
@@ -1305,6 +1324,7 @@
         if (mChildrenContainer != null) {
             mChildrenContainer.setChildrenExpanded(expanded);
         }
+        updateClickAndFocus();
     }
 
     public static void applyTint(View v, int color) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/HybridGroupManager.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/HybridGroupManager.java
index 8f2c81f..7373607 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/HybridGroupManager.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/HybridGroupManager.java
@@ -112,6 +112,10 @@
         if (!text.equals(reusableView.getText())) {
             reusableView.setText(text);
         }
+        String contentDescription = String.format(mContext.getResources().getQuantityString(
+                R.plurals.notification_group_overflow_description, number), number);
+
+        reusableView.setContentDescription(contentDescription);
         return reusableView;
     }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationChildrenContainer.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationChildrenContainer.java
index cb0b848..2cc36ee 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationChildrenContainer.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationChildrenContainer.java
@@ -670,6 +670,11 @@
         if (mNotificationHeader != null) {
             mNotificationHeader.setExpanded(childrenExpanded);
         }
+        final int count = mChildren.size();
+        for (int childIdx = 0; childIdx < count; childIdx++) {
+            ExpandableNotificationRow child = mChildren.get(childIdx);
+            child.setChildrenExpanded(childrenExpanded, false);
+        }
     }
 
     public void setNotificationParent(ExpandableNotificationRow parent) {