Merge "Check for null ViewRootImpl when saving accessibility focus in ListView." into jb-mr1-dev

import android.view.ViewDebug;

import android.view.ViewGroup;

import android.view.ViewParent;

import android.view.ViewRootImpl;

import android.view.accessibility.AccessibilityEvent;

import android.view.accessibility.AccessibilityNodeInfo;

import android.widget.RemoteViews.RemoteView;

            }

            // Remember which child, if any, had accessibility focus.

            final View accessFocusedView = getViewRootImpl().getAccessibilityFocusedHost();

            final ViewRootImpl viewRootImpl = getViewRootImpl();

            if (viewRootImpl != null) {

                final View accessFocusedView = viewRootImpl.getAccessibilityFocusedHost();

                if (accessFocusedView != null) {

                final View accessFocusedChild = findAccessibilityFocusedChild(accessFocusedView);

                    final View accessFocusedChild = findAccessibilityFocusedChild(

                            accessFocusedView);

                    if (accessFocusedChild != null) {

                        if (!dataChanged || isDirectChildHeaderOrFooter(accessFocusedChild)) {

                        // If the views won't be changing, try to maintain focus

                        // on the current view host and (if applicable) its

                        // virtual view.

                            // If the views won't be changing, try to maintain

                            // focus on the current view host and (if

                            // applicable) its virtual view.

                            accessibilityFocusLayoutRestoreView = accessFocusedView;

                        accessibilityFocusLayoutRestoreNode = getViewRootImpl()

                            accessibilityFocusLayoutRestoreNode = viewRootImpl

                                    .getAccessibilityFocusedVirtualView();

                        } else {

                        // Otherwise, try to maintain focus at the same position.

                            // Otherwise, try to maintain focus at the same

                            // position.

                            accessibilityFocusPosition = getPositionForView(accessFocusedChild);

                        }

                    }

                }

            }

            // Clear out old views

            detachAllViewsFromParent();