diff --git a/java/src/com/android/inputmethod/accessibility/AccessibilityEntityProvider.java b/java/src/com/android/inputmethod/accessibility/AccessibilityEntityProvider.java
index 8ce1263..7639432 100644
--- a/java/src/com/android/inputmethod/accessibility/AccessibilityEntityProvider.java
+++ b/java/src/com/android/inputmethod/accessibility/AccessibilityEntityProvider.java
@@ -157,7 +157,7 @@
 
             // Add the virtual children of the root View.
             final Keyboard keyboard = mKeyboardView.getKeyboard();
-            final Key[] keys = keyboard.mKeys;
+            final Key[] keys = keyboard.getKeys();
             for (Key key : keys) {
                 final int childVirtualViewId = generateVirtualViewIdForKey(key);
                 rootInfo.addChild(mKeyboardView, childVirtualViewId);
@@ -300,7 +300,7 @@
         }
         mVirtualViewIdToKey.clear();
 
-        final Key[] keys = keyboard.mKeys;
+        final Key[] keys = keyboard.getKeys();
         for (Key key : keys) {
             final int virtualViewId = generateVirtualViewIdForKey(key);
             mVirtualViewIdToKey.put(virtualViewId, key);
diff --git a/java/src/com/android/inputmethod/keyboard/Keyboard.java b/java/src/com/android/inputmethod/keyboard/Keyboard.java
index c40ddea..0b3737e 100644
--- a/java/src/com/android/inputmethod/keyboard/Keyboard.java
+++ b/java/src/com/android/inputmethod/keyboard/Keyboard.java
@@ -69,7 +69,7 @@
     public final int mMaxMoreKeysKeyboardColumn;
 
     /** Array of keys and icons in this keyboard */
-    public final Key[] mKeys;
+    private final Key[] mKeys;
     public final Key[] mShiftKeys;
     public final Key[] mAltCodeKeysWhileTyping;
     public final KeyboardIconsSet mIconsSet;
@@ -104,6 +104,28 @@
         mProximityCharsCorrectionEnabled = params.mProximityCharsCorrectionEnabled;
     }
 
+    protected Keyboard(final Keyboard keyboard) {
+        mId = keyboard.mId;
+        mThemeId = keyboard.mThemeId;
+        mOccupiedHeight = keyboard.mOccupiedHeight;
+        mOccupiedWidth = keyboard.mOccupiedWidth;
+        mMostCommonKeyHeight = keyboard.mMostCommonKeyHeight;
+        mMostCommonKeyWidth = keyboard.mMostCommonKeyWidth;
+        mMoreKeysTemplate = keyboard.mMoreKeysTemplate;
+        mMaxMoreKeysKeyboardColumn = keyboard.mMaxMoreKeysKeyboardColumn;
+        mKeyVisualAttributes = keyboard.mKeyVisualAttributes;
+        mTopPadding = keyboard.mTopPadding;
+        mVerticalGap = keyboard.mVerticalGap;
+
+        mKeys = keyboard.mKeys;
+        mShiftKeys = keyboard.mShiftKeys;
+        mAltCodeKeysWhileTyping = keyboard.mAltCodeKeysWhileTyping;
+        mIconsSet = keyboard.mIconsSet;
+
+        mProximityInfo = keyboard.mProximityInfo;
+        mProximityCharsCorrectionEnabled = keyboard.mProximityCharsCorrectionEnabled;
+    }
+
     public boolean hasProximityCharsCorrection(final int code) {
         if (!mProximityCharsCorrectionEnabled) {
             return false;
@@ -120,6 +142,10 @@
         return mProximityInfo;
     }
 
+    public Key[] getKeys() {
+        return mKeys;
+    }
+
     public Key getKey(final int code) {
         if (code == Constants.CODE_UNSPECIFIED) {
             return null;
@@ -130,7 +156,7 @@
                 return mKeyCache.valueAt(index);
             }
 
-            for (final Key key : mKeys) {
+            for (final Key key : getKeys()) {
                 if (key.getCode() == code) {
                     mKeyCache.put(code, key);
                     return key;
@@ -146,7 +172,7 @@
             return true;
         }
 
-        for (final Key key : mKeys) {
+        for (final Key key : getKeys()) {
             if (key == aKey) {
                 mKeyCache.put(key.getCode(), key);
                 return true;
diff --git a/java/src/com/android/inputmethod/keyboard/KeyboardView.java b/java/src/com/android/inputmethod/keyboard/KeyboardView.java
index d049a86..0ef6802 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyboardView.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyboardView.java
@@ -285,7 +285,7 @@
         // TODO: Confirm if it's really required to draw all keys when hardware acceleration is on.
         if (drawAllKeys || isHardwareAccelerated) {
             // Draw all keys.
-            for (final Key key : mKeyboard.mKeys) {
+            for (final Key key : mKeyboard.getKeys()) {
                 onDrawKey(key, canvas, paint);
             }
         } else {
diff --git a/java/src/com/android/inputmethod/keyboard/MoreKeysDetector.java b/java/src/com/android/inputmethod/keyboard/MoreKeysDetector.java
index a2001cb..6b76e24 100644
--- a/java/src/com/android/inputmethod/keyboard/MoreKeysDetector.java
+++ b/java/src/com/android/inputmethod/keyboard/MoreKeysDetector.java
@@ -39,7 +39,7 @@
 
         Key nearestKey = null;
         int nearestDist = (y < 0) ? mSlideAllowanceSquareTop : mSlideAllowanceSquare;
-        for (final Key key : getKeyboard().mKeys) {
+        for (final Key key : getKeyboard().getKeys()) {
             final int dist = key.squaredDistanceToEdge(touchX, touchY);
             if (dist < nearestDist) {
                 nearestKey = key;