diff --git a/hover-demo-nonfullscreen/src/main/java/io/mattcarroll/hoverdemonon_fullscreen/DemoHoverMenuService.java b/hover-demo-nonfullscreen/src/main/java/io/mattcarroll/hoverdemonon_fullscreen/DemoHoverMenuService.java
index cfdfea8..587f113 100755
--- a/hover-demo-nonfullscreen/src/main/java/io/mattcarroll/hoverdemonon_fullscreen/DemoHoverMenuService.java
+++ b/hover-demo-nonfullscreen/src/main/java/io/mattcarroll/hoverdemonon_fullscreen/DemoHoverMenuService.java
@@ -60,4 +60,14 @@ protected HoverMenuAdapter createHoverMenuAdapter() {
     protected Navigator createNavigator() {
         return new DefaultNavigator(getApplicationContext(), false);
     }
+
+    @Override
+    public void onHoverMenuCollapsed() {
+        Log.d(TAG, "onHoverMenuCollapsed() called");
+    }
+
+    @Override
+    public void onHoverMenuExpanded() {
+        Log.d(TAG, "onHoverMenuExpanded() called");
+    }
 }
diff --git a/hover/build.gradle b/hover/build.gradle
index ce45f77..72f4cab 100644
--- a/hover/build.gradle
+++ b/hover/build.gradle
@@ -4,7 +4,7 @@ version = '0.9.7'
 
 android {
     compileSdkVersion 23
-    buildToolsVersion "23.0.0"
+    buildToolsVersion "23.0.3"
 
     defaultConfig {
         minSdkVersion 15
diff --git a/hover/src/main/AndroidManifest.xml b/hover/src/main/AndroidManifest.xml
index 35a16a3..00a19a9 100644
--- a/hover/src/main/AndroidManifest.xml
+++ b/hover/src/main/AndroidManifest.xml
@@ -4,8 +4,4 @@
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
 
-    <application android:allowBackup="false">
-
-    </application>
-
 </manifest>
diff --git a/hover/src/main/java/io/mattcarroll/hover/HoverMenu.java b/hover/src/main/java/io/mattcarroll/hover/HoverMenu.java
index 3a05012..b6cff42 100755
--- a/hover/src/main/java/io/mattcarroll/hover/HoverMenu.java
+++ b/hover/src/main/java/io/mattcarroll/hover/HoverMenu.java
@@ -58,7 +58,16 @@ public interface HoverMenu {
 
     void removeOnExitListener(@NonNull OnExitListener onExitListener);
 
+    void addOnCollapseAndExpandListener(@NonNull OnCollapseAndExpandListener onCollapseAndExpandListener);
+
+    void removeOnCollapseAndExpandListener(@NonNull OnCollapseAndExpandListener onCollapseAndExpandListener);
+
     interface OnExitListener {
         void onExitByUserRequest();
     }
+
+    interface OnCollapseAndExpandListener {
+        void onHoverMenuCollapsed();
+        void onHoverMenuExpanded();
+    }
 }
diff --git a/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/view/ViewHoverMenu.java b/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/view/ViewHoverMenu.java
index c433d70..4c752f4 100644
--- a/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/view/ViewHoverMenu.java
+++ b/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/view/ViewHoverMenu.java
@@ -50,6 +50,25 @@ public class ViewHoverMenu extends FrameLayout implements HoverMenu {
     private HoverMenuAdapter mAdapter;
     private SharedPreferences mPrefs;
     private Set<OnExitListener> mOnExitListeners = new HashSet<>();
+    private Set<OnCollapseAndExpandListener> mOnCollapseAndExpandListeners = new HashSet<>();
+
+    private HoverMenuView.HoverMenuTransitionListener mHoverMenuTransitionListener = new HoverMenuView.HoverMenuTransitionListener() {
+        @Override
+        public void onCollapsing() { }
+
+        @Override
+        public void onCollapsed() {
+            notifyOnCollapsedListeners();
+        }
+
+        @Override
+        public void onExpanding() {}
+
+        @Override
+        public void onExpanded() {
+            notifyOnExpandedListeners();
+        }
+    };
 
     public ViewHoverMenu(Context context) {
         this(context, null);
@@ -131,6 +150,7 @@ public void expandMenu() {
 
     @Override
     public void collapseMenu() {
+        mHoverMenuView.setHoverMenuTransitionListener(mHoverMenuTransitionListener);
         mHoverMenuView.collapse();
     }
 
@@ -144,6 +164,28 @@ public void removeOnExitListener(@NonNull OnExitListener onExitListener) {
         mOnExitListeners.remove(onExitListener);
     }
 
+    @Override
+    public void addOnCollapseAndExpandListener(@NonNull OnCollapseAndExpandListener onCollapseAndExpandListener) {
+        mOnCollapseAndExpandListeners.add(onCollapseAndExpandListener);
+    }
+
+    @Override
+    public void removeOnCollapseAndExpandListener(@NonNull OnCollapseAndExpandListener onCollapseAndExpandListener) {
+        mOnCollapseAndExpandListeners.remove(onCollapseAndExpandListener);
+    }
+
+    private void notifyOnCollapsedListeners() {
+        for (OnCollapseAndExpandListener listener : mOnCollapseAndExpandListeners) {
+            listener.onHoverMenuCollapsed();
+        }
+    }
+
+    private void notifyOnExpandedListeners() {
+        for (OnCollapseAndExpandListener listener : mOnCollapseAndExpandListeners) {
+            listener.onHoverMenuExpanded();
+        }
+    }
+
     private void notifyOnExitListeners() {
         for (OnExitListener listener : mOnExitListeners) {
             listener.onExitByUserRequest();
diff --git a/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/window/HoverMenuService.java b/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/window/HoverMenuService.java
index 10f45b4..8eeffd7 100755
--- a/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/window/HoverMenuService.java
+++ b/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/window/HoverMenuService.java
@@ -38,7 +38,7 @@
  * is no {@code Activity} to associate with the {@code HoverMenu}'s UI. This {@code Service} is the
  * application's link to the device's {@code Window} to display the {@code HoverMenu}.
  */
-public abstract class HoverMenuService extends Service {
+public abstract class HoverMenuService extends Service implements HoverMenu.OnCollapseAndExpandListener {
 
     private static final String TAG = "HoverMenuService";
 
@@ -71,6 +71,7 @@ public void onCreate() {
                 .restoreVisualState(loadPreferredLocation())
                 .build();
         mHoverMenu.addOnExitListener(mWindowHoverMenuMenuExitListener);
+        mHoverMenu.addOnCollapseAndExpandListener(this);
     }
 
     @Override
@@ -134,6 +135,22 @@ protected void onHoverMenuExitingByUserRequest() {
         // Hook for subclasses.
     }
 
+    /**
+     * Hook method for subclasses to take action when HoverMenu collapses.
+     */
+    @Override
+    public void onHoverMenuCollapsed() {
+        // Hook for subclasses.
+    }
+
+    /**
+     * Hook method for subclasses to take action when HoverMenu expands.
+     */
+    @Override
+    public void onHoverMenuExpanded() {
+        // Hook for subclasses.
+    }
+
     private void savePreferredLocation() {
         String memento = mHoverMenu.getVisualState();
         mPrefs.edit().putString(PREF_HOVER_MENU_VISUAL_STATE, memento).apply();
diff --git a/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/window/WindowHoverMenu.java b/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/window/WindowHoverMenu.java
index f54b57d..19d0f53 100755
--- a/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/window/WindowHoverMenu.java
+++ b/hover/src/main/java/io/mattcarroll/hover/defaulthovermenu/window/WindowHoverMenu.java
@@ -45,6 +45,7 @@ public class WindowHoverMenu implements HoverMenu {
     private boolean mIsShowingHoverMenu; // Are we currently display mHoverMenuView?
     private boolean mIsInDragMode; // If we're not in drag mode then we're in menu mode.
     private Set<OnExitListener> mOnExitListeners = new HashSet<>();
+    private Set<OnCollapseAndExpandListener> mOnCollapseAndExpandListeners = new HashSet<>();
 
     private HoverMenuView.HoverMenuTransitionListener mHoverMenuTransitionListener = new HoverMenuView.HoverMenuTransitionListener() {
         @Override
@@ -57,6 +58,7 @@ public void onCollapsed() {
             // take over. We do this so that touch events outside the drag area can propagate to
             // applications on screen.
             mWindowViewController.makeUntouchable(mHoverMenuView);
+            notifyOnCollapsedListeners();
         }
 
         @Override
@@ -67,6 +69,7 @@ public void onExpanding() {
         @Override
         public void onExpanded() {
             mWindowViewController.makeTouchable(mHoverMenuView);
+            notifyOnExpandedListeners();
         }
     };
 
@@ -190,6 +193,28 @@ public void removeOnExitListener(@NonNull OnExitListener onExitListener) {
         mOnExitListeners.remove(onExitListener);
     }
 
+    @Override
+    public void addOnCollapseAndExpandListener(@NonNull OnCollapseAndExpandListener onCollapseAndExpandListener) {
+        mOnCollapseAndExpandListeners.add(onCollapseAndExpandListener);
+    }
+
+    @Override
+    public void removeOnCollapseAndExpandListener(@NonNull OnCollapseAndExpandListener onCollapseAndExpandListener) {
+        mOnCollapseAndExpandListeners.remove(onCollapseAndExpandListener);
+    }
+
+    private void notifyOnCollapsedListeners() {
+        for (OnCollapseAndExpandListener listener : mOnCollapseAndExpandListeners) {
+            listener.onHoverMenuCollapsed();
+        }
+    }
+
+    private void notifyOnExpandedListeners() {
+        for (OnCollapseAndExpandListener listener : mOnCollapseAndExpandListeners) {
+            listener.onHoverMenuExpanded();
+        }
+    }
+
     private void notifyOnExitListeners() {
         for (OnExitListener listener : mOnExitListeners) {
             listener.onExitByUserRequest();
diff --git a/hoverdemo/build.gradle b/hoverdemo/build.gradle
index 9625b91..daa5803 100644
--- a/hoverdemo/build.gradle
+++ b/hoverdemo/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 23
-    buildToolsVersion "23.0.0"
+    buildToolsVersion "23.0.3"
 
     defaultConfig {
         applicationId "io.mattcarroll.hover.hoverdemo"