diff --git a/android/widget/ViewSwitcher.java b/android/widget/ViewSwitcher.java
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+++ b/android/widget/ViewSwitcher.java
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+/*
+ * Copyright (C) 2006 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.widget;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+
+/**
+ * {@link ViewAnimator} that switches between two views, and has a factory
+ * from which these views are created.  You can either use the factory to
+ * create the views, or add them yourself.  A ViewSwitcher can only have two
+ * child views, of which only one is shown at a time.
+ */
+public class ViewSwitcher extends ViewAnimator {
+    /**
+     * The factory used to create the two children.
+     */
+    ViewFactory mFactory;
+
+    /**
+     * Creates a new empty ViewSwitcher.
+     *
+     * @param context the application's environment
+     */
+    public ViewSwitcher(Context context) {
+        super(context);
+    }
+
+    /**
+     * Creates a new empty ViewSwitcher for the given context and with the
+     * specified set attributes.
+     *
+     * @param context the application environment
+     * @param attrs a collection of attributes
+     */
+    public ViewSwitcher(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    /**
+     * {@inheritDoc}
+     *
+     * @throws IllegalStateException if this switcher already contains two children
+     */
+    @Override
+    public void addView(View child, int index, ViewGroup.LayoutParams params) {
+        if (getChildCount() >= 2) {
+            throw new IllegalStateException("Can't add more than 2 views to a ViewSwitcher");
+        }
+        super.addView(child, index, params);
+    }
+
+    @Override
+    public CharSequence getAccessibilityClassName() {
+        return ViewSwitcher.class.getName();
+    }
+
+    /**
+     * Returns the next view to be displayed.
+     *
+     * @return the view that will be displayed after the next views flip.
+     */
+    public View getNextView() {
+        int which = mWhichChild == 0 ? 1 : 0;
+        return getChildAt(which);
+    }
+
+    private View obtainView() {
+        View child = mFactory.makeView();
+        LayoutParams lp = (LayoutParams) child.getLayoutParams();
+        if (lp == null) {
+            lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
+        }
+        addView(child, lp);
+        return child;
+    }
+
+    /**
+     * Sets the factory used to create the two views between which the
+     * ViewSwitcher will flip. Instead of using a factory, you can call
+     * {@link #addView(android.view.View, int, android.view.ViewGroup.LayoutParams)}
+     * twice.
+     *
+     * @param factory the view factory used to generate the switcher's content
+     */
+    public void setFactory(ViewFactory factory) {
+        mFactory = factory;
+        obtainView();
+        obtainView();
+    }
+
+    /**
+     * Reset the ViewSwitcher to hide all of the existing views and to make it
+     * think that the first time animation has not yet played.
+     */
+    public void reset() {
+        mFirstTime = true;
+        View v;
+        v = getChildAt(0);
+        if (v != null) {
+            v.setVisibility(View.GONE);
+        }
+        v = getChildAt(1);
+        if (v != null) {
+            v.setVisibility(View.GONE);
+        }
+    }
+
+    /**
+     * Creates views in a ViewSwitcher.
+     */
+    public interface ViewFactory {
+        /**
+         * Creates a new {@link android.view.View} to be added in a
+         * {@link android.widget.ViewSwitcher}.
+         *
+         * @return a {@link android.view.View}
+         */
+        View makeView();
+    }
+}
+