diff --git a/core/java/android/accessibilityservice/AccessibilityService.java b/core/java/android/accessibilityservice/AccessibilityService.java
index bf823f8d960f2..56728ad881e13 100644
--- a/core/java/android/accessibilityservice/AccessibilityService.java
+++ b/core/java/android/accessibilityservice/AccessibilityService.java
@@ -600,11 +600,16 @@ public abstract class AccessibilityService extends Service {
      * Dispatch a gesture to the touch screen. Any gestures currently in progress, whether from
      * the user, this service, or another service, will be cancelled.
      * <p>
+     * The gesture will be dispatched as if it were performed directly on the screen by a user, so
+     * the events may be affected by features such as magnification and explore by touch.
+     * </p>
+     * <p>
      * <strong>Note:</strong> In order to dispatch gestures, your service
      * must declare the capability by setting the
      * {@link android.R.styleable#AccessibilityService_canPerformGestures}
      * property in its meta-data. For more information, see
      * {@link #SERVICE_META_DATA}.
+     * </p>
      *
      * @param gesture The gesture to dispatch
      * @param callback The object to call back when the status of the gesture is known. If
diff --git a/services/accessibility/java/com/android/server/accessibility/AccessibilityInputFilter.java b/services/accessibility/java/com/android/server/accessibility/AccessibilityInputFilter.java
index 3e7466fdfa7d7..613f8907c999e 100644
--- a/services/accessibility/java/com/android/server/accessibility/AccessibilityInputFilter.java
+++ b/services/accessibility/java/com/android/server/accessibility/AccessibilityInputFilter.java
@@ -363,12 +363,6 @@ class AccessibilityInputFilter extends InputFilter implements EventStreamTransfo
     private void enableFeatures() {
         resetStreamState();
 
-        if ((mEnabledFeatures & FLAG_FEATURE_INJECT_MOTION_EVENTS) != 0) {
-            mMotionEventInjector = new MotionEventInjector(mContext.getMainLooper());
-            addFirstEventHandler(mMotionEventInjector);
-            mAms.setMotionEventInjector(mMotionEventInjector);
-        }
-
         if ((mEnabledFeatures & FLAG_FEATURE_AUTOCLICK) != 0) {
             mAutoclickController = new AutoclickController(mContext, mUserId);
             addFirstEventHandler(mAutoclickController);
@@ -384,6 +378,12 @@ class AccessibilityInputFilter extends InputFilter implements EventStreamTransfo
             addFirstEventHandler(mMagnificationGestureHandler);
         }
 
+        if ((mEnabledFeatures & FLAG_FEATURE_INJECT_MOTION_EVENTS) != 0) {
+            mMotionEventInjector = new MotionEventInjector(mContext.getMainLooper());
+            addFirstEventHandler(mMotionEventInjector);
+            mAms.setMotionEventInjector(mMotionEventInjector);
+        }
+
         if ((mEnabledFeatures & FLAG_FEATURE_FILTER_KEY_EVENTS) != 0) {
             mKeyboardInterceptor = new KeyboardInterceptor(mAms);
             addFirstEventHandler(mKeyboardInterceptor);
diff --git a/services/accessibility/java/com/android/server/accessibility/MagnificationController.java b/services/accessibility/java/com/android/server/accessibility/MagnificationController.java
index b2196bf946e2e..fb1ef37141b0e 100644
--- a/services/accessibility/java/com/android/server/accessibility/MagnificationController.java
+++ b/services/accessibility/java/com/android/server/accessibility/MagnificationController.java
@@ -156,10 +156,10 @@ class MagnificationController {
             final float offsetY = sentSpec.offsetY;
 
             // Compute the new center and update spec as needed.
-            final float centerX = (mMagnifiedBounds.width() / 2.0f
-                    + mMagnifiedBounds.left - offsetX) / scale;
-            final float centerY = (mMagnifiedBounds.height() / 2.0f
-                    + mMagnifiedBounds.top - offsetY) / scale;
+            final float centerX = (mMagnifiedBounds.width() / 2.0f - offsetX) / scale
+                    + mMagnifiedBounds.left;
+            final float centerY = (mMagnifiedBounds.height() / 2.0f - offsetY) / scale
+                    + mMagnifiedBounds.top;
             if (updateSpec) {
                 setScaleAndCenter(scale, centerX, centerY, false);
             } else {
@@ -256,7 +256,7 @@ class MagnificationController {
     public float getCenterX() {
         synchronized (mLock) {
             return  (mMagnifiedBounds.width() / 2.0f
-                    + mMagnifiedBounds.left - getOffsetX()) / getScale();
+                   - getOffsetX()) / getScale() + mMagnifiedBounds.left;
         }
     }
 
@@ -279,7 +279,7 @@ class MagnificationController {
     public float getCenterY() {
         synchronized (mLock) {
             return (mMagnifiedBounds.height() / 2.0f
-                    + mMagnifiedBounds.top - getOffsetY()) / getScale();
+                    - getOffsetY()) / getScale() + mMagnifiedBounds.top;
         }
     }