diff --git a/android/app/FragmentTransaction.java b/android/app/FragmentTransaction.java
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+++ b/android/app/FragmentTransaction.java
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+package android.app;
+
+import android.annotation.AnimatorRes;
+import android.annotation.IdRes;
+import android.annotation.IntDef;
+import android.annotation.Nullable;
+import android.annotation.StringRes;
+import android.annotation.StyleRes;
+import android.os.Bundle;
+import android.view.View;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * API for performing a set of Fragment operations.
+ *
+ * <div class="special reference">
+ * <h3>Developer Guides</h3>
+ * <p>For more information about using fragments, read the
+ * <a href="{@docRoot}guide/components/fragments.html">Fragments</a> developer
+ * guide.</p>
+ * </div>
+ *
+ * @deprecated Use the <a href="{@docRoot}tools/extras/support-library.html">Support Library</a>
+ *      {@link android.support.v4.app.FragmentTransaction}
+ */
+@Deprecated
+public abstract class FragmentTransaction {
+    /**
+     * Calls {@link #add(int, Fragment, String)} with a 0 containerViewId.
+     */
+    public abstract FragmentTransaction add(Fragment fragment, String tag);
+
+    /**
+     * Calls {@link #add(int, Fragment, String)} with a null tag.
+     */
+    public abstract FragmentTransaction add(@IdRes int containerViewId, Fragment fragment);
+
+    /**
+     * Add a fragment to the activity state.  This fragment may optionally
+     * also have its view (if {@link Fragment#onCreateView Fragment.onCreateView}
+     * returns non-null) inserted into a container view of the activity.
+     *
+     * @param containerViewId Optional identifier of the container this fragment is
+     * to be placed in.  If 0, it will not be placed in a container.
+     * @param fragment The fragment to be added.  This fragment must not already
+     * be added to the activity.
+     * @param tag Optional tag name for the fragment, to later retrieve the
+     * fragment with {@link FragmentManager#findFragmentByTag(String)
+     * FragmentManager.findFragmentByTag(String)}.
+     *
+     * @return Returns the same FragmentTransaction instance.
+     */
+    public abstract FragmentTransaction add(@IdRes int containerViewId, Fragment fragment,
+            String tag);
+
+    /**
+     * Calls {@link #replace(int, Fragment, String)} with a null tag.
+     */
+    public abstract FragmentTransaction replace(@IdRes int containerViewId, Fragment fragment);
+
+    /**
+     * Replace an existing fragment that was added to a container.  This is
+     * essentially the same as calling {@link #remove(Fragment)} for all
+     * currently added fragments that were added with the same containerViewId
+     * and then {@link #add(int, Fragment, String)} with the same arguments
+     * given here.
+     *
+     * @param containerViewId Identifier of the container whose fragment(s) are
+     * to be replaced.
+     * @param fragment The new fragment to place in the container.
+     * @param tag Optional tag name for the fragment, to later retrieve the
+     * fragment with {@link FragmentManager#findFragmentByTag(String)
+     * FragmentManager.findFragmentByTag(String)}.
+     *
+     * @return Returns the same FragmentTransaction instance.
+     */
+    public abstract FragmentTransaction replace(@IdRes int containerViewId, Fragment fragment,
+            String tag);
+
+    /**
+     * Remove an existing fragment.  If it was added to a container, its view
+     * is also removed from that container.
+     *
+     * @param fragment The fragment to be removed.
+     *
+     * @return Returns the same FragmentTransaction instance.
+     */
+    public abstract FragmentTransaction remove(Fragment fragment);
+
+    /**
+     * Hides an existing fragment.  This is only relevant for fragments whose
+     * views have been added to a container, as this will cause the view to
+     * be hidden.
+     *
+     * @param fragment The fragment to be hidden.
+     *
+     * @return Returns the same FragmentTransaction instance.
+     */
+    public abstract FragmentTransaction hide(Fragment fragment);
+
+    /**
+     * Shows a previously hidden fragment.  This is only relevant for fragments whose
+     * views have been added to a container, as this will cause the view to
+     * be shown.
+     *
+     * @param fragment The fragment to be shown.
+     *
+     * @return Returns the same FragmentTransaction instance.
+     */
+    public abstract FragmentTransaction show(Fragment fragment);
+
+    /**
+     * Detach the given fragment from the UI.  This is the same state as
+     * when it is put on the back stack: the fragment is removed from
+     * the UI, however its state is still being actively managed by the
+     * fragment manager.  When going into this state its view hierarchy
+     * is destroyed.
+     *
+     * @param fragment The fragment to be detached.
+     *
+     * @return Returns the same FragmentTransaction instance.
+     */
+    public abstract FragmentTransaction detach(Fragment fragment);
+
+    /**
+     * Re-attach a fragment after it had previously been detached from
+     * the UI with {@link #detach(Fragment)}.  This
+     * causes its view hierarchy to be re-created, attached to the UI,
+     * and displayed.
+     *
+     * @param fragment The fragment to be attached.
+     *
+     * @return Returns the same FragmentTransaction instance.
+     */
+    public abstract FragmentTransaction attach(Fragment fragment);
+
+    /**
+     * Set a currently active fragment in this FragmentManager as the primary navigation fragment.
+     *
+     * <p>The primary navigation fragment's
+     * {@link Fragment#getChildFragmentManager() child FragmentManager} will be called first
+     * to process delegated navigation actions such as {@link FragmentManager#popBackStack()}
+     * if no ID or transaction name is provided to pop to. Navigation operations outside of the
+     * fragment system may choose to delegate those actions to the primary navigation fragment
+     * as returned by {@link FragmentManager#getPrimaryNavigationFragment()}.</p>
+     *
+     * <p>The fragment provided must currently be added to the FragmentManager to be set as
+     * a primary navigation fragment, or previously added as part of this transaction.</p>
+     *
+     * @param fragment the fragment to set as the primary navigation fragment
+     * @return the same FragmentTransaction instance
+     */
+    public abstract FragmentTransaction setPrimaryNavigationFragment(Fragment fragment);
+
+    /**
+     * @return <code>true</code> if this transaction contains no operations,
+     * <code>false</code> otherwise.
+     */
+    public abstract boolean isEmpty();
+
+    /**
+     * Bit mask that is set for all enter transitions.
+     */
+    public static final int TRANSIT_ENTER_MASK = 0x1000;
+
+    /**
+     * Bit mask that is set for all exit transitions.
+     */
+    public static final int TRANSIT_EXIT_MASK = 0x2000;
+
+    /** Not set up for a transition. */
+    public static final int TRANSIT_UNSET = -1;
+    /** No animation for transition. */
+    public static final int TRANSIT_NONE = 0;
+    /** Fragment is being added onto the stack */
+    public static final int TRANSIT_FRAGMENT_OPEN = 1 | TRANSIT_ENTER_MASK;
+    /** Fragment is being removed from the stack */
+    public static final int TRANSIT_FRAGMENT_CLOSE = 2 | TRANSIT_EXIT_MASK;
+    /** Fragment should simply fade in or out; that is, no strong navigation associated
+     * with it except that it is appearing or disappearing for some reason. */
+    public static final int TRANSIT_FRAGMENT_FADE = 3 | TRANSIT_ENTER_MASK;
+
+    /** @hide */
+    @IntDef(prefix = { "TRANSIT_" }, value = {
+            TRANSIT_NONE,
+            TRANSIT_FRAGMENT_OPEN,
+            TRANSIT_FRAGMENT_CLOSE,
+            TRANSIT_FRAGMENT_FADE
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface Transit {}
+
+    /**
+     * Set specific animation resources to run for the fragments that are
+     * entering and exiting in this transaction. These animations will not be
+     * played when popping the back stack.
+     */
+    public abstract FragmentTransaction setCustomAnimations(@AnimatorRes int enter,
+            @AnimatorRes int exit);
+
+    /**
+     * Set specific animation resources to run for the fragments that are
+     * entering and exiting in this transaction. The <code>popEnter</code>
+     * and <code>popExit</code> animations will be played for enter/exit
+     * operations specifically when popping the back stack.
+     */
+    public abstract FragmentTransaction setCustomAnimations(@AnimatorRes int enter,
+            @AnimatorRes int exit, @AnimatorRes int popEnter, @AnimatorRes int popExit);
+
+    /**
+     * Select a standard transition animation for this transaction.  May be
+     * one of {@link #TRANSIT_NONE}, {@link #TRANSIT_FRAGMENT_OPEN},
+     * {@link #TRANSIT_FRAGMENT_CLOSE}, or {@link #TRANSIT_FRAGMENT_FADE}.
+     */
+    public abstract FragmentTransaction setTransition(@Transit int transit);
+
+    /**
+     * Used with to map a View from a removed or hidden Fragment to a View from a shown
+     * or added Fragment.
+     * @param sharedElement A View in a disappearing Fragment to match with a View in an
+     *                      appearing Fragment.
+     * @param name The transitionName for a View in an appearing Fragment to match to the shared
+     *             element.
+     */
+    public abstract FragmentTransaction addSharedElement(View sharedElement, String name);
+
+    /**
+     * Set a custom style resource that will be used for resolving transit
+     * animations.
+     */
+    public abstract FragmentTransaction setTransitionStyle(@StyleRes int styleRes);
+
+    /**
+     * Add this transaction to the back stack.  This means that the transaction
+     * will be remembered after it is committed, and will reverse its operation
+     * when later popped off the stack.
+     *
+     * @param name An optional name for this back stack state, or null.
+     */
+    public abstract FragmentTransaction addToBackStack(@Nullable String name);
+
+    /**
+     * Returns true if this FragmentTransaction is allowed to be added to the back
+     * stack. If this method would return false, {@link #addToBackStack(String)}
+     * will throw {@link IllegalStateException}.
+     *
+     * @return True if {@link #addToBackStack(String)} is permitted on this transaction.
+     */
+    public abstract boolean isAddToBackStackAllowed();
+
+    /**
+     * Disallow calls to {@link #addToBackStack(String)}. Any future calls to
+     * addToBackStack will throw {@link IllegalStateException}. If addToBackStack
+     * has already been called, this method will throw IllegalStateException.
+     */
+    public abstract FragmentTransaction disallowAddToBackStack();
+
+    /**
+     * Set the full title to show as a bread crumb when this transaction
+     * is on the back stack, as used by {@link FragmentBreadCrumbs}.
+     *
+     * @param res A string resource containing the title.
+     */
+    public abstract FragmentTransaction setBreadCrumbTitle(@StringRes int res);
+
+    /**
+     * Like {@link #setBreadCrumbTitle(int)} but taking a raw string; this
+     * method is <em>not</em> recommended, as the string can not be changed
+     * later if the locale changes.
+     */
+    public abstract FragmentTransaction setBreadCrumbTitle(CharSequence text);
+
+    /**
+     * Set the short title to show as a bread crumb when this transaction
+     * is on the back stack, as used by {@link FragmentBreadCrumbs}.
+     *
+     * @param res A string resource containing the title.
+     */
+    public abstract FragmentTransaction setBreadCrumbShortTitle(@StringRes int res);
+
+    /**
+     * Like {@link #setBreadCrumbShortTitle(int)} but taking a raw string; this
+     * method is <em>not</em> recommended, as the string can not be changed
+     * later if the locale changes.
+     */
+    public abstract FragmentTransaction setBreadCrumbShortTitle(CharSequence text);
+
+    /**
+     * Sets whether or not to allow optimizing operations within and across
+     * transactions. This will remove redundant operations, eliminating
+     * operations that cancel. For example, if two transactions are executed
+     * together, one that adds a fragment A and the next replaces it with fragment B,
+     * the operations will cancel and only fragment B will be added. That means that
+     * fragment A may not go through the creation/destruction lifecycle.
+     * <p>
+     * The side effect of removing redundant operations is that fragments may have state changes
+     * out of the expected order. For example, one transaction adds fragment A,
+     * a second adds fragment B, then a third removes fragment A. Without removing the redundant
+     * operations, fragment B could expect that while it is being created, fragment A will also
+     * exist because fragment A will be removed after fragment B was added.
+     * With removing redundant operations, fragment B cannot expect fragment A to exist when
+     * it has been created because fragment A's add/remove will be optimized out.
+     * <p>
+     * It can also reorder the state changes of Fragments to allow for better Transitions.
+     * Added Fragments may have {@link Fragment#onCreate(Bundle)} called before replaced
+     * Fragments have {@link Fragment#onDestroy()} called.
+     * <p>
+     * The default is {@code false} for applications targeting version
+     * versions prior to O and {@code true} for applications targeting O and
+     * later.
+     *
+     * @param reorderingAllowed {@code true} to enable optimizing out redundant operations
+     *                          or {@code false} to disable optimizing out redundant
+     *                          operations on this transaction.
+     */
+    public abstract FragmentTransaction setReorderingAllowed(boolean reorderingAllowed);
+
+    /**
+     * Add a Runnable to this transaction that will be run after this transaction has
+     * been committed. If fragment transactions are {@link #setReorderingAllowed(boolean) optimized}
+     * this may be after other subsequent fragment operations have also taken place, or operations
+     * in this transaction may have been optimized out due to the presence of a subsequent
+     * fragment transaction in the batch.
+     *
+     *
+     * <p>If a transaction is committed using {@link #commitAllowingStateLoss()} this runnable
+     * may be executed when the FragmentManager is in a state where new transactions may not
+     * be committed without allowing state loss.</p>
+     *
+     * <p><code>runOnCommit</code> may not be used with transactions
+     * {@link #addToBackStack(String) added to the back stack} as Runnables cannot be persisted
+     * with back stack state. {@link IllegalStateException} will be thrown if
+     * {@link #addToBackStack(String)} has been previously called for this transaction
+     * or if it is called after a call to <code>runOnCommit</code>.</p>
+     *
+     * @param runnable Runnable to add
+     * @return this FragmentTransaction
+     * @throws IllegalStateException if {@link #addToBackStack(String)} has been called
+     */
+    public abstract FragmentTransaction runOnCommit(Runnable runnable);
+
+    /**
+     * Schedules a commit of this transaction.  The commit does
+     * not happen immediately; it will be scheduled as work on the main thread
+     * to be done the next time that thread is ready.
+     *
+     * <p class="note">A transaction can only be committed with this method
+     * prior to its containing activity saving its state.  If the commit is
+     * attempted after that point, an exception will be thrown.  This is
+     * because the state after the commit can be lost if the activity needs to
+     * be restored from its state.  See {@link #commitAllowingStateLoss()} for
+     * situations where it may be okay to lose the commit.</p>
+     *
+     * @return Returns the identifier of this transaction's back stack entry,
+     * if {@link #addToBackStack(String)} had been called.  Otherwise, returns
+     * a negative number.
+     */
+    public abstract int commit();
+
+    /**
+     * Like {@link #commit} but allows the commit to be executed after an
+     * activity's state is saved.  This is dangerous because the commit can
+     * be lost if the activity needs to later be restored from its state, so
+     * this should only be used for cases where it is okay for the UI state
+     * to change unexpectedly on the user.
+     */
+    public abstract int commitAllowingStateLoss();
+
+    /**
+     * Commits this transaction synchronously. Any added fragments will be
+     * initialized and brought completely to the lifecycle state of their host
+     * and any removed fragments will be torn down accordingly before this
+     * call returns. Committing a transaction in this way allows fragments
+     * to be added as dedicated, encapsulated components that monitor the
+     * lifecycle state of their host while providing firmer ordering guarantees
+     * around when those fragments are fully initialized and ready. Fragments
+     * that manage views will have those views created and attached.
+     *
+     * <p>Calling <code>commitNow</code> is preferable to calling
+     * {@link #commit()} followed by {@link FragmentManager#executePendingTransactions()}
+     * as the latter will have the side effect of attempting to commit <em>all</em>
+     * currently pending transactions whether that is the desired behavior
+     * or not.</p>
+     *
+     * <p>Transactions committed in this way may not be added to the
+     * FragmentManager's back stack, as doing so would break other expected
+     * ordering guarantees for other asynchronously committed transactions.
+     * This method will throw {@link IllegalStateException} if the transaction
+     * previously requested to be added to the back stack with
+     * {@link #addToBackStack(String)}.</p>
+     *
+     * <p class="note">A transaction can only be committed with this method
+     * prior to its containing activity saving its state.  If the commit is
+     * attempted after that point, an exception will be thrown.  This is
+     * because the state after the commit can be lost if the activity needs to
+     * be restored from its state.  See {@link #commitAllowingStateLoss()} for
+     * situations where it may be okay to lose the commit.</p>
+     */
+    public abstract void commitNow();
+
+    /**
+     * Like {@link #commitNow} but allows the commit to be executed after an
+     * activity's state is saved.  This is dangerous because the commit can
+     * be lost if the activity needs to later be restored from its state, so
+     * this should only be used for cases where it is okay for the UI state
+     * to change unexpectedly on the user.
+     */
+    public abstract void commitNowAllowingStateLoss();
+}