diff --git a/api/current.txt b/api/current.txt
index 6a5bcb963beb9..67cdc9cb0a5b7 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -2722,10 +2722,10 @@ package android.accessibilityservice {
     method public final android.accessibilityservice.AccessibilityServiceInfo getServiceInfo();
     method public final android.accessibilityservice.AccessibilityService.SoftKeyboardController getSoftKeyboardController();
     method public java.util.List<android.view.accessibility.AccessibilityWindowInfo> getWindows();
-    method public void onAccessibilityEvent(android.view.accessibility.AccessibilityEvent);
+    method public abstract void onAccessibilityEvent(android.view.accessibility.AccessibilityEvent);
     method public final android.os.IBinder onBind(android.content.Intent);
     method protected boolean onGesture(int);
-    method public void onInterrupt();
+    method public abstract void onInterrupt();
     method protected boolean onKeyEvent(android.view.KeyEvent);
     method protected void onServiceConnected();
     method public final boolean performGlobalAction(int);
diff --git a/api/system-current.txt b/api/system-current.txt
index d37fec74987b5..dcd210334d492 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -2842,10 +2842,10 @@ package android.accessibilityservice {
     method public final android.accessibilityservice.AccessibilityServiceInfo getServiceInfo();
     method public final android.accessibilityservice.AccessibilityService.SoftKeyboardController getSoftKeyboardController();
     method public java.util.List<android.view.accessibility.AccessibilityWindowInfo> getWindows();
-    method public void onAccessibilityEvent(android.view.accessibility.AccessibilityEvent);
+    method public abstract void onAccessibilityEvent(android.view.accessibility.AccessibilityEvent);
     method public final android.os.IBinder onBind(android.content.Intent);
     method protected boolean onGesture(int);
-    method public void onInterrupt();
+    method public abstract void onInterrupt();
     method protected boolean onKeyEvent(android.view.KeyEvent);
     method protected void onServiceConnected();
     method public final boolean performGlobalAction(int);
diff --git a/api/test-current.txt b/api/test-current.txt
index 07ccc671d9c45..319d9f34da752 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -2722,10 +2722,10 @@ package android.accessibilityservice {
     method public final android.accessibilityservice.AccessibilityServiceInfo getServiceInfo();
     method public final android.accessibilityservice.AccessibilityService.SoftKeyboardController getSoftKeyboardController();
     method public java.util.List<android.view.accessibility.AccessibilityWindowInfo> getWindows();
-    method public void onAccessibilityEvent(android.view.accessibility.AccessibilityEvent);
+    method public abstract void onAccessibilityEvent(android.view.accessibility.AccessibilityEvent);
     method public final android.os.IBinder onBind(android.content.Intent);
     method protected boolean onGesture(int);
-    method public void onInterrupt();
+    method public abstract void onInterrupt();
     method protected boolean onKeyEvent(android.view.KeyEvent);
     method protected void onServiceConnected();
     method public final boolean performGlobalAction(int);
diff --git a/core/java/android/accessibilityservice/AccessibilityService.java b/core/java/android/accessibilityservice/AccessibilityService.java
index 38847489eb648..b4e119e52fb74 100644
--- a/core/java/android/accessibilityservice/AccessibilityService.java
+++ b/core/java/android/accessibilityservice/AccessibilityService.java
@@ -421,12 +421,12 @@ public abstract class AccessibilityService extends Service {
      * this method returns. Services wishing to use the event after this method returns should
      * make a copy.
      */
-    public void onAccessibilityEvent(AccessibilityEvent event) {}
+    public abstract void onAccessibilityEvent(AccessibilityEvent event);
 
     /**
      * Callback for interrupting the accessibility feedback.
      */
-    public void onInterrupt() {}
+    public abstract void onInterrupt();
 
     /**
      * Dispatches service connection to internal components first, then the