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diff --git a/src/android/support/v4/view/AccessibilityDelegateCompat.java b/src/android/support/v4/view/AccessibilityDelegateCompat.java
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+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.support.v4.view;
+
+import android.os.Build;
+import android.os.Bundle;
+import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
+import android.support.v4.view.accessibility.AccessibilityNodeProviderCompat;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.accessibility.AccessibilityEvent;
+
+/**
+ * Helper for accessing {@link android.view.View.AccessibilityDelegate} introduced after
+ * API level 4 in a backwards compatible fashion.
+ */
+public class AccessibilityDelegateCompat {
+
+    static interface AccessibilityDelegateImpl {
+        public Object newAccessiblityDelegateDefaultImpl();
+        public Object newAccessiblityDelegateBridge(AccessibilityDelegateCompat listener);
+        public boolean dispatchPopulateAccessibilityEvent(Object delegate, View host,
+                AccessibilityEvent event);
+        public void onInitializeAccessibilityEvent(Object delegate, View host,
+                AccessibilityEvent event);
+        public void onInitializeAccessibilityNodeInfo(Object delegate, View host,
+                AccessibilityNodeInfoCompat info);
+        public void onPopulateAccessibilityEvent(Object delegate, View host,
+                AccessibilityEvent event);
+        public boolean onRequestSendAccessibilityEvent(Object delegate, ViewGroup host, View child,
+                AccessibilityEvent event);
+        public void sendAccessibilityEvent(Object delegate, View host, int eventType);
+        public void sendAccessibilityEventUnchecked(Object delegate, View host,
+                AccessibilityEvent event);
+        public AccessibilityNodeProviderCompat getAccessibilityNodeProvider(Object delegate,
+                View host);
+        public boolean performAccessibilityAction(Object delegate, View host, int action,
+                Bundle args);
+    }
+
+    static class AccessibilityDelegateStubImpl implements AccessibilityDelegateImpl {
+        @Override
+        public Object newAccessiblityDelegateDefaultImpl() {
+            return null;
+        }
+
+        @Override
+        public Object newAccessiblityDelegateBridge(AccessibilityDelegateCompat listener) {
+            return null;
+        }
+
+        @Override
+        public boolean dispatchPopulateAccessibilityEvent(Object delegate, View host,
+                AccessibilityEvent event) {
+            return false;
+        }
+
+        @Override
+        public void onInitializeAccessibilityEvent(Object delegate, View host,
+                AccessibilityEvent event) {
+            return;
+        }
+
+        @Override
+        public void onInitializeAccessibilityNodeInfo(Object delegate, View host,
+                AccessibilityNodeInfoCompat info) {
+            return;
+        }
+
+        @Override
+        public void onPopulateAccessibilityEvent(Object delegate, View host,
+                AccessibilityEvent event) {
+            return;
+        }
+
+        @Override
+        public boolean onRequestSendAccessibilityEvent(Object delegate, ViewGroup host, View child,
+                AccessibilityEvent event) {
+            return true;
+        }
+
+        @Override
+        public void sendAccessibilityEvent(Object delegate, View host, int eventType) {
+            return;
+        }
+
+        @Override
+        public void sendAccessibilityEventUnchecked(Object delegate, View host,
+                AccessibilityEvent event) {
+            return;
+        }
+
+        @Override
+        public AccessibilityNodeProviderCompat getAccessibilityNodeProvider(Object delegate,
+                View host) {
+            return null;
+        }
+
+        @Override
+        public boolean performAccessibilityAction(Object delegate, View host, int action,
+                Bundle args) {
+            return false;
+        }
+    }
+
+    static class AccessibilityDelegateIcsImpl extends AccessibilityDelegateStubImpl {
+        @Override
+        public Object newAccessiblityDelegateDefaultImpl() {
+            return AccessibilityDelegateCompatIcs.newAccessibilityDelegateDefaultImpl();
+        }
+
+        @Override
+        public Object newAccessiblityDelegateBridge(final AccessibilityDelegateCompat compat) {
+            return AccessibilityDelegateCompatIcs.newAccessibilityDelegateBridge(
+                    new AccessibilityDelegateCompatIcs.AccessibilityDelegateBridge() {
+                @Override
+                public boolean dispatchPopulateAccessibilityEvent(View host,
+                        AccessibilityEvent event) {
+                    return compat.dispatchPopulateAccessibilityEvent(host, event);
+                }
+
+                @Override
+                public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
+                    compat.onInitializeAccessibilityEvent(host, event);
+                }
+
+                @Override
+                public void onInitializeAccessibilityNodeInfo(View host, Object info) {
+                    compat.onInitializeAccessibilityNodeInfo(host,
+                            new AccessibilityNodeInfoCompat(info));
+                }
+
+                @Override
+                public void onPopulateAccessibilityEvent(View host, AccessibilityEvent event) {
+                    compat.onPopulateAccessibilityEvent(host, event);
+                }
+
+                @Override
+                public boolean onRequestSendAccessibilityEvent(ViewGroup host, View child,
+                        AccessibilityEvent event) {
+                    return compat.onRequestSendAccessibilityEvent(host, child, event);
+                }
+
+                @Override
+                public void sendAccessibilityEvent(View host, int eventType) {
+                    compat.sendAccessibilityEvent(host, eventType);
+                }
+
+                @Override
+                public void sendAccessibilityEventUnchecked(View host, AccessibilityEvent event) {
+                    compat.sendAccessibilityEventUnchecked(host, event);
+                }
+            });
+        }
+
+        @Override
+        public boolean dispatchPopulateAccessibilityEvent(Object delegate, View host,
+                AccessibilityEvent event) {
+            return AccessibilityDelegateCompatIcs.dispatchPopulateAccessibilityEvent(delegate,
+                    host, event);
+        }
+
+        @Override
+        public void onInitializeAccessibilityEvent(Object delegate, View host,
+                AccessibilityEvent event) {
+            AccessibilityDelegateCompatIcs.onInitializeAccessibilityEvent(delegate, host, event);
+        }
+
+        @Override
+        public void onInitializeAccessibilityNodeInfo(Object delegate, View host,
+                AccessibilityNodeInfoCompat info) {
+            AccessibilityDelegateCompatIcs.onInitializeAccessibilityNodeInfo(delegate, host,
+                    info.getInfo());
+        }
+
+        @Override
+        public void onPopulateAccessibilityEvent(Object delegate, View host,
+                AccessibilityEvent event) {
+            AccessibilityDelegateCompatIcs.onPopulateAccessibilityEvent(delegate, host, event);
+        }
+
+        @Override
+        public boolean onRequestSendAccessibilityEvent(Object delegate, ViewGroup host, View child,
+                AccessibilityEvent event) {
+            return AccessibilityDelegateCompatIcs.onRequestSendAccessibilityEvent(delegate, host,
+                    child, event);
+        }
+
+        @Override
+        public void sendAccessibilityEvent(Object delegate, View host, int eventType) {
+            AccessibilityDelegateCompatIcs.sendAccessibilityEvent(delegate, host, eventType);
+        }
+
+        @Override
+        public void sendAccessibilityEventUnchecked(Object delegate, View host,
+                AccessibilityEvent event) {
+            AccessibilityDelegateCompatIcs.sendAccessibilityEventUnchecked(delegate, host, event);
+        }
+    }
+
+    private static final AccessibilityDelegateImpl IMPL;
+    private static final Object DEFAULT_DELEGATE;
+
+    static {
+        if (Build.VERSION.SDK_INT >= 14) { // ICS
+            IMPL = new AccessibilityDelegateIcsImpl();
+        } else {
+            IMPL = new AccessibilityDelegateStubImpl();
+        }
+        DEFAULT_DELEGATE = IMPL.newAccessiblityDelegateDefaultImpl();
+    }
+
+    final Object mBridge;
+
+    /**
+     * Creates a new instance.
+     */
+    public AccessibilityDelegateCompat() {
+        mBridge = IMPL.newAccessiblityDelegateBridge(this);
+    }
+
+    /**
+     * @return The wrapped bridge implementation.
+     */
+    Object getBridge() {
+        return mBridge;
+    }
+
+    /**
+     * Sends an accessibility event of the given type. If accessibility is not
+     * enabled this method has no effect.
+     * <p>
+     * The default implementation behaves as {@link View#sendAccessibilityEvent(int)
+     * View#sendAccessibilityEvent(int)} for the case of no accessibility delegate
+     * been set.
+     * </p>
+     *
+     * @param host The View hosting the delegate.
+     * @param eventType The type of the event to send.
+     *
+     * @see View#sendAccessibilityEvent(int) View#sendAccessibilityEvent(int)
+     */
+    @SuppressWarnings("static-method")
+    public void sendAccessibilityEvent(View host, int eventType) {
+        IMPL.sendAccessibilityEvent(DEFAULT_DELEGATE, host, eventType);
+    }
+
+    /**
+     * Sends an accessibility event. This method behaves exactly as
+     * {@link #sendAccessibilityEvent(View, int)} but takes as an argument an
+     * empty {@link AccessibilityEvent} and does not perform a check whether
+     * accessibility is enabled.
+     * <p>
+     * The default implementation behaves as
+     * {@link View#sendAccessibilityEventUnchecked(AccessibilityEvent)
+     * View#sendAccessibilityEventUnchecked(AccessibilityEvent)} for
+     * the case of no accessibility delegate been set.
+     * </p>
+     *
+     * @param host The View hosting the delegate.
+     * @param event The event to send.
+     *
+     * @see View#sendAccessibilityEventUnchecked(AccessibilityEvent)
+     *      View#sendAccessibilityEventUnchecked(AccessibilityEvent)
+     */
+    @SuppressWarnings("static-method")
+    public void sendAccessibilityEventUnchecked(View host, AccessibilityEvent event) {
+        IMPL.sendAccessibilityEventUnchecked(DEFAULT_DELEGATE, host, event);
+    }
+
+    /**
+     * Dispatches an {@link AccessibilityEvent} to the host {@link View} first and then
+     * to its children for adding their text content to the event.
+     * <p>
+     * The default implementation behaves as
+     * {@link View#dispatchPopulateAccessibilityEvent(AccessibilityEvent)
+     * View#dispatchPopulateAccessibilityEvent(AccessibilityEvent)} for
+     * the case of no accessibility delegate been set.
+     * </p>
+     *
+     * @param host The View hosting the delegate.
+     * @param event The event.
+     * @return True if the event population was completed.
+     *
+     * @see View#dispatchPopulateAccessibilityEvent(AccessibilityEvent)
+     *      View#dispatchPopulateAccessibilityEvent(AccessibilityEvent)
+     */
+    @SuppressWarnings("static-method")
+    public boolean dispatchPopulateAccessibilityEvent(View host, AccessibilityEvent event) {
+        return IMPL.dispatchPopulateAccessibilityEvent(DEFAULT_DELEGATE, host, event);
+    }
+
+    /**
+     * Gives a chance to the host View to populate the accessibility event with its
+     * text content.
+     * <p>
+     * The default implementation behaves as
+     * {@link ViewCompat#onPopulateAccessibilityEvent(View, AccessibilityEvent)
+     * ViewCompat#onPopulateAccessibilityEvent(AccessibilityEvent)} for
+     * the case of no accessibility delegate been set.
+     * </p>
+     *
+     * @param host The View hosting the delegate.
+     * @param event The accessibility event which to populate.
+     *
+     * @see ViewCompat#onPopulateAccessibilityEvent(View ,AccessibilityEvent)
+     *      ViewCompat#onPopulateAccessibilityEvent(View, AccessibilityEvent)
+     */
+    @SuppressWarnings("static-method")
+    public void onPopulateAccessibilityEvent(View host, AccessibilityEvent event) {
+        IMPL.onPopulateAccessibilityEvent(DEFAULT_DELEGATE, host, event);
+    }
+
+    /**
+     * Initializes an {@link AccessibilityEvent} with information about the
+     * the host View which is the event source.
+     * <p>
+     * The default implementation behaves as
+     * {@link ViewCompat#onInitializeAccessibilityEvent(View v, AccessibilityEvent event)
+     * ViewCompat#onInitalizeAccessibilityEvent(View v, AccessibilityEvent event)} for
+     * the case of no accessibility delegate been set.
+     * </p>
+     *
+     * @param host The View hosting the delegate.
+     * @param event The event to initialize.
+     *
+     * @see ViewCompat#onInitializeAccessibilityEvent(View, AccessibilityEvent)
+     *      ViewCompat#onInitializeAccessibilityEvent(View, AccessibilityEvent)
+     */
+    @SuppressWarnings("static-method")
+    public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) {
+        IMPL.onInitializeAccessibilityEvent(DEFAULT_DELEGATE, host, event);
+    }
+
+    /**
+     * Initializes an {@link AccessibilityNodeInfoCompat} with information about the host view.
+     * <p>
+     * The default implementation behaves as
+     * {@link ViewCompat#onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfoCompat)
+     * ViewCompat#onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfoCompat)} for
+     * the case of no accessibility delegate been set.
+     * </p>
+     *
+     * @param host The View hosting the delegate.
+     * @param info The instance to initialize.
+     *
+     * @see ViewCompat#onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfoCompat)
+     *      ViewCompat#onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfoCompat)
+     */
+    @SuppressWarnings("static-method")
+    public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) {
+        IMPL.onInitializeAccessibilityNodeInfo(DEFAULT_DELEGATE, host, info);
+    }
+
+    /**
+     * Called when a child of the host View has requested sending an
+     * {@link AccessibilityEvent} and gives an opportunity to the parent (the host)
+     * to augment the event.
+     * <p>
+     * The default implementation behaves as
+     * {@link ViewGroupCompat#onRequestSendAccessibilityEvent(ViewGroup, View, AccessibilityEvent)
+     * ViewGroupCompat#onRequestSendAccessibilityEvent(ViewGroup, View, AccessibilityEvent)} for
+     * the case of no accessibility delegate been set.
+     * </p>
+     *
+     * @param host The View hosting the delegate.
+     * @param child The child which requests sending the event.
+     * @param event The event to be sent.
+     * @return True if the event should be sent
+     *
+     * @see ViewGroupCompat#onRequestSendAccessibilityEvent(ViewGroup, View, AccessibilityEvent)
+     *      ViewGroupCompat#onRequestSendAccessibilityEvent(ViewGroup, View, AccessibilityEvent)
+     */
+    @SuppressWarnings({"static-method", "javadoc"})
+    public boolean onRequestSendAccessibilityEvent(ViewGroup host, View child,
+            AccessibilityEvent event) {
+        return IMPL.onRequestSendAccessibilityEvent(DEFAULT_DELEGATE, host, child, event);
+    }
+
+    /**
+     * Gets the provider for managing a virtual view hierarchy rooted at this View
+     * and reported to {@link android.accessibilityservice.AccessibilityService}s
+     * that explore the window content.
+     * <p>
+     * The default implementation behaves as
+     * {@link ViewCompat#getAccessibilityNodeProvider(View) ViewCompat#getAccessibilityNodeProvider(View)}
+     * for the case of no accessibility delegate been set.
+     * </p>
+     *
+     * @return The provider.
+     *
+     * @see AccessibilityNodeProviderCompat
+     */
+    @SuppressWarnings("static-method")
+    public AccessibilityNodeProviderCompat getAccessibilityNodeProvider(View host) {
+        return IMPL.getAccessibilityNodeProvider(DEFAULT_DELEGATE, host);
+    }
+
+    /**
+     * Performs the specified accessibility action on the view. For
+     * possible accessibility actions look at {@link AccessibilityNodeInfoCompat}.
+     * <p>
+     * The default implementation behaves as
+     * {@link View#performAccessibilityAction(int, Bundle)
+     *  View#performAccessibilityAction(int, Bundle)} for the case of
+     *  no accessibility delegate been set.
+     * </p>
+     *
+     * @param action The action to perform.
+     * @return Whether the action was performed.
+     *
+     * @see View#performAccessibilityAction(int, Bundle)
+     *      View#performAccessibilityAction(int, Bundle)
+     */
+    @SuppressWarnings("static-method")
+    public boolean performAccessibilityAction(View host, int action, Bundle args) {
+        return IMPL.performAccessibilityAction(DEFAULT_DELEGATE, host, action, args);
+    }
+}