diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index b730ba7..7c4be12 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -1343,7 +1343,6 @@
         </activity>
 
         <activity android:name="Settings$WifiDisplaySettingsActivity"
-                android:uiOptions="splitActionBarWhenNarrow"
                 android:label="@string/wifi_display_settings_title"
                 android:taskAffinity=""
                 android:excludeFromRecents="true">
diff --git a/res/values/strings.xml b/res/values/strings.xml
index bb537bf..e32ac43 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1226,37 +1226,22 @@
     <string name="bluetooth_dock_settings_remember">Remember settings</string>
 
     <!-- Wifi Display settings. The title of the screen. [CHAR LIMIT=40] -->
-    <string name="wifi_display_settings_title">Wireless display</string>
-    <!-- Wifi Display settings. Text displayed when Wifi display is off and device list is empty [CHAR LIMIT=80]-->
-    <string name="wifi_display_settings_empty_list_wifi_display_off">To see devices, turn wireless display on.</string>
-    <!-- Wifi Display settings. Text displayed when Wifi Display is off and device list is empty [CHAR LIMIT=80]-->
-    <string name="wifi_display_settings_empty_list_wifi_display_disabled">Wireless display is disabled because Wi\u2011Fi is off.</string>
-    <!-- Wifi Display settings. The title of the action button that initiates a search for nearby devices [CHAR LIMIT=20] -->
-    <string name="wifi_display_search_for_devices">Search for displays</string>
-    <!-- Wifi Display settings. The title of the action button while a search for nearby devices is in progress [CHAR LIMIT=20] -->
-    <string name="wifi_display_searching_for_devices">Searching\u2026</string>
+    <string name="wifi_display_settings_title">Cast screen</string>
+    <!-- Wifi Display settings. The title of a menu item to enable wireless display [CHAR LIMIT=40] -->
+    <string name="wifi_display_enable_menu_item">Enable wireless display</string>
     <!-- Wifi Display settings. Text that appears when scanning for devices is finished and no nearby device was found [CHAR LIMIT=40]-->
-    <string name="wifi_display_no_devices_found">No nearby wireless displays were found.</string>
-    <!-- Wifi Display settings. The sub heading for devices which have already been paired with this device. [CHAR LIMIT=40] -->
-    <string name="wifi_display_paired_devices">Paired displays</string>
-    <!-- Wifi Display settings. The sub heading for available devices during and after scanning. [CHAR LIMIT=40] -->
-    <string name="wifi_display_available_devices">Available devices</string>
+    <string name="wifi_display_no_devices_found">No nearby devices were found.</string>
     <!-- Wifi Display settings. The status summary for connecting devices. [CHAR LIMIT=40] -->
     <string name="wifi_display_status_connecting">Connecting</string>
     <!-- Wifi Display settings. The status summary for connected devices. [CHAR LIMIT=40] -->
     <string name="wifi_display_status_connected">Connected</string>
-    <!-- Wifi Display settings. The status summary for available devices. [CHAR LIMIT=40] -->
-    <string name="wifi_display_status_available">Available</string>
     <!-- Wifi Display settings. The status summary for devices that's already in use. [CHAR LIMIT=40] -->
     <string name="wifi_display_status_in_use">In use</string>
+    <!-- Wifi Display settings. The status summary for devices that's not available. [CHAR LIMIT=40] -->
+    <string name="wifi_display_status_not_available">Unavailable</string>
     <!-- Wifi Display settings. Image description for device details button. This opens the screen to rename, unpair, etc. a single device. -->
     <string name="wifi_display_details">Display settings</string>
 
-    <!-- Wifi Display settings. Disconnect dialog.  The title of the dialog. [CHAR LIMIT=40] -->
-    <string name="wifi_display_disconnect_title">Disconnect?</string>
-    <!-- Wifi Display settings. Disconnect dialog.  Message for disconnecting from the display. [CHAR LIMIT=NONE] -->
-    <string name="wifi_display_disconnect_text">This will end your connection with:&lt;br>&lt;b><xliff:g id="device_name">%1$s</xliff:g>&lt;/b></string>
-
     <!-- Wifi Display settings. Options dialog.  The title of the dialog. [CHAR LIMIT=40] -->
     <string name="wifi_display_options_title">Wireless display options</string>
     <!-- Wifi Display settings. Options dialog.  The forget button text. [CHAR LIMIT=20] -->
@@ -1266,13 +1251,6 @@
     <!-- Wifi Display settings. Options dialog.  The name label used when prompting the user to rename the display. [CHAR LIMIT=20] -->
     <string name="wifi_display_options_name">Name</string>
 
-    <!-- Wifi Display settings. Summary shown in Display settings. Text used for 'On' state. [CHAR LIMIT=40] -->
-    <string name="wifi_display_summary_on">On</string>
-    <!-- Wifi Display settings. Summary shown in Display settings. Text used for 'Off' state. [CHAR LIMIT=40] -->
-    <string name="wifi_display_summary_off">Off</string>
-    <!-- Wifi Display settings. Summary shown in Display settings. Text used for 'Disabled' state. [CHAR LIMIT=40] -->
-    <string name="wifi_display_summary_disabled">Disabled</string>
-
     <!-- Wifi Display settings. The sub heading for wireless display certification options. [CHAR LIMIT=40] -->
     <string name="wifi_display_certification_heading" translatable="false">Certification</string>
     <!-- Wifi Display settings. The section title for wireless display session info. [CHAR LIMIT=40] -->
diff --git a/src/com/android/settings/DisplaySettings.java b/src/com/android/settings/DisplaySettings.java
index c379ec3..7772b7c 100644
--- a/src/com/android/settings/DisplaySettings.java
+++ b/src/com/android/settings/DisplaySettings.java
@@ -21,16 +21,10 @@
 import android.app.ActivityManagerNative;
 import android.app.Dialog;
 import android.app.admin.DevicePolicyManager;
-import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
 import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
 import android.content.res.Configuration;
 import android.content.res.Resources;
-import android.hardware.display.DisplayManager;
-import android.hardware.display.WifiDisplay;
-import android.hardware.display.WifiDisplayStatus;
 import android.os.Bundle;
 import android.os.RemoteException;
 import android.preference.CheckBoxPreference;
@@ -40,7 +34,6 @@
 import android.preference.PreferenceScreen;
 import android.provider.Settings;
 import android.provider.Settings.SettingNotFoundException;
-import android.util.AttributeSet;
 import android.util.Log;
 
 import com.android.internal.view.RotationPolicy;
@@ -60,12 +53,9 @@
     private static final String KEY_FONT_SIZE = "font_size";
     private static final String KEY_NOTIFICATION_PULSE = "notification_pulse";
     private static final String KEY_SCREEN_SAVER = "screensaver";
-    private static final String KEY_WIFI_DISPLAY = "wifi_display";
 
     private static final int DLG_GLOBAL_CHANGE_WARNING = 1;
 
-    private DisplayManager mDisplayManager;
-
     private CheckBoxPreference mAccelerometer;
     private WarnedListPreference mFontSizePref;
     private CheckBoxPreference mNotificationPulse;
@@ -75,9 +65,6 @@
     private ListPreference mScreenTimeoutPreference;
     private Preference mScreenSaverPreference;
 
-    private WifiDisplayStatus mWifiDisplayStatus;
-    private Preference mWifiDisplayPreference;
-
     private final RotationPolicy.RotationPolicyListener mRotationPolicyListener =
             new RotationPolicy.RotationPolicyListener() {
         @Override
@@ -135,16 +122,6 @@
                 Log.e(TAG, Settings.System.NOTIFICATION_LIGHT_PULSE + " not found");
             }
         }
-
-        mDisplayManager = (DisplayManager)getActivity().getSystemService(
-                Context.DISPLAY_SERVICE);
-        mWifiDisplayStatus = mDisplayManager.getWifiDisplayStatus();
-        mWifiDisplayPreference = (Preference)findPreference(KEY_WIFI_DISPLAY);
-        if (mWifiDisplayStatus.getFeatureState()
-                == WifiDisplayStatus.FEATURE_STATE_UNAVAILABLE) {
-            getPreferenceScreen().removePreference(mWifiDisplayPreference);
-            mWifiDisplayPreference = null;
-        }
     }
 
     private void updateTimeoutPreferenceDescription(long currentTimeout) {
@@ -252,12 +229,6 @@
         RotationPolicy.registerRotationPolicyListener(getActivity(),
                 mRotationPolicyListener);
 
-        if (mWifiDisplayPreference != null) {
-            getActivity().registerReceiver(mReceiver, new IntentFilter(
-                    DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED));
-            mWifiDisplayStatus = mDisplayManager.getWifiDisplayStatus();
-        }
-
         updateState();
     }
 
@@ -267,10 +238,6 @@
 
         RotationPolicy.unregisterRotationPolicyListener(getActivity(),
                 mRotationPolicyListener);
-
-        if (mWifiDisplayPreference != null) {
-            getActivity().unregisterReceiver(mReceiver);
-        }
     }
 
     @Override
@@ -291,7 +258,6 @@
         updateAccelerometerRotationCheckbox();
         readFontSizePreference(mFontSizePref);
         updateScreenSaverSummary();
-        updateWifiDisplaySummary();
     }
 
     private void updateScreenSaverSummary() {
@@ -301,23 +267,6 @@
         }
     }
 
-    private void updateWifiDisplaySummary() {
-        if (mWifiDisplayPreference != null) {
-            switch (mWifiDisplayStatus.getFeatureState()) {
-                case WifiDisplayStatus.FEATURE_STATE_OFF:
-                    mWifiDisplayPreference.setSummary(R.string.wifi_display_summary_off);
-                    break;
-                case WifiDisplayStatus.FEATURE_STATE_ON:
-                    mWifiDisplayPreference.setSummary(R.string.wifi_display_summary_on);
-                    break;
-                case WifiDisplayStatus.FEATURE_STATE_DISABLED:
-                default:
-                    mWifiDisplayPreference.setSummary(R.string.wifi_display_summary_disabled);
-                    break;
-            }
-        }
-    }
-
     private void updateAccelerometerRotationCheckbox() {
         if (getActivity() == null) return;
 
@@ -347,6 +296,7 @@
         return super.onPreferenceTreeClick(preferenceScreen, preference);
     }
 
+    @Override
     public boolean onPreferenceChange(Preference preference, Object objValue) {
         final String key = preference.getKey();
         if (KEY_SCREEN_TIMEOUT.equals(key)) {
@@ -365,17 +315,6 @@
         return true;
     }
 
-    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            if (intent.getAction().equals(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED)) {
-                mWifiDisplayStatus = (WifiDisplayStatus)intent.getParcelableExtra(
-                        DisplayManager.EXTRA_WIFI_DISPLAY_STATUS);
-                updateWifiDisplaySummary();
-            }
-        }
-    };
-
     @Override
     public boolean onPreferenceClick(Preference preference) {
         if (preference == mFontSizePref) {
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index e93fa18..db7eb2b 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -506,7 +506,6 @@
         // uiOptions for fragments also defined as activities in manifest.
         if (WifiSettings.class.getName().equals(fragmentName) ||
                 WifiP2pSettings.class.getName().equals(fragmentName) ||
-                WifiDisplaySettings.class.getName().equals(fragmentName) ||
                 BluetoothSettings.class.getName().equals(fragmentName) ||
                 DreamSettings.class.getName().equals(fragmentName) ||
                 LocationSettings.class.getName().equals(fragmentName) ||
diff --git a/src/com/android/settings/wfd/WifiDisplaySettings.java b/src/com/android/settings/wfd/WifiDisplaySettings.java
index 6ec79f3..d04f6f2 100755
--- a/src/com/android/settings/wfd/WifiDisplaySettings.java
+++ b/src/com/android/settings/wfd/WifiDisplaySettings.java
@@ -29,6 +29,8 @@
 import android.hardware.display.DisplayManager;
 import android.hardware.display.WifiDisplay;
 import android.hardware.display.WifiDisplayStatus;
+import android.media.MediaRouter;
+import android.media.MediaRouter.RouteInfo;
 import android.net.Uri;
 import android.net.wifi.p2p.WifiP2pManager;
 import android.net.wifi.p2p.WifiP2pManager.ActionListener;
@@ -63,31 +65,48 @@
 import android.widget.Switch;
 import android.widget.TextView;
 
+import com.android.internal.app.MediaRouteDialogPresenter;
 import com.android.settings.ProgressCategory;
 import com.android.settings.R;
 import com.android.settings.SettingsPreferenceFragment;
 
 /**
  * The Settings screen for WifiDisplay configuration and connection management.
+ *
+ * The wifi display routes are integrated together with other remote display routes
+ * from the media router.  It may happen that wifi display isn't actually available
+ * on the system.  In that case, the enable option will not be shown but other
+ * remote display routes will continue to be made available.
  */
 public final class WifiDisplaySettings extends SettingsPreferenceFragment {
     private static final String TAG = "WifiDisplaySettings";
     private static final boolean DEBUG = false;
 
-    private static final int MENU_ID_SCAN = Menu.FIRST;
+    private static final int MENU_ID_ENABLE_WIFI_DISPLAY = Menu.FIRST;
 
+    private static final int CHANGE_SETTINGS = 1 << 0;
+    private static final int CHANGE_ROUTES = 1 << 1;
+    private static final int CHANGE_WIFI_DISPLAY_STATUS = 1 << 2;
+    private static final int CHANGE_ALL = -1;
+
+    private static final int ORDER_CERTIFICATION = 1;
+    private static final int ORDER_CONNECTED = 2;
+    private static final int ORDER_AVAILABLE = 3;
+    private static final int ORDER_UNAVAILABLE = 4;
+
+    private final Handler mHandler;
+
+    private MediaRouter mRouter;
     private DisplayManager mDisplayManager;
 
+    private boolean mStarted;
+    private int mPendingChanges;
+
     private boolean mWifiDisplayOnSetting;
     private WifiDisplayStatus mWifiDisplayStatus;
 
-    private PreferenceGroup mPairedDevicesCategory;
-    private ProgressCategory mAvailableDevicesCategory;
-
     private TextView mEmptyView;
 
-    private Switch mActionBarSwitch;
-
     /* certification */
     private boolean mWifiDisplayCertificationOn;
     private WifiP2pManager mWifiP2pManager;
@@ -100,15 +119,18 @@
     private int mOperatingChannel;
 
     public WifiDisplaySettings() {
+        mHandler = new Handler();
     }
 
     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
 
-        mDisplayManager = (DisplayManager)getActivity().getSystemService(Context.DISPLAY_SERVICE);
-        mWifiP2pManager = (WifiP2pManager)getActivity().getSystemService(Context.WIFI_P2P_SERVICE);
-        mWifiP2pChannel = mWifiP2pManager.initialize(getActivity(), Looper.getMainLooper(), null);
+        final Context context = getActivity();
+        mRouter = (MediaRouter)context.getSystemService(Context.MEDIA_ROUTER_SERVICE);
+        mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE);
+        mWifiP2pManager = (WifiP2pManager)context.getSystemService(Context.WIFI_P2P_SERVICE);
+        mWifiP2pChannel = mWifiP2pManager.initialize(context, Looper.getMainLooper(), null);
 
         addPreferencesFromResource(R.xml.wifi_display_settings);
         setHasOptionsMenu(true);
@@ -118,42 +140,17 @@
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
 
-        Activity activity = getActivity();
-        mActionBarSwitch = new Switch(activity);
-        mActionBarSwitch.setOnCheckedChangeListener(mSwitchOnCheckedChangedListener);
-
-        final int padding = activity.getResources().getDimensionPixelSize(
-                R.dimen.action_bar_switch_padding);
-        mActionBarSwitch.setPaddingRelative(0, 0, padding, 0);
-        activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
-                ActionBar.DISPLAY_SHOW_CUSTOM);
-        activity.getActionBar().setCustomView(mActionBarSwitch,
-                new ActionBar.LayoutParams(
-                        ActionBar.LayoutParams.WRAP_CONTENT,
-                        ActionBar.LayoutParams.WRAP_CONTENT,
-                        Gravity.CENTER_VERTICAL | Gravity.END));
-
         mEmptyView = (TextView) getView().findViewById(android.R.id.empty);
+        mEmptyView.setText(R.string.wifi_display_no_devices_found);
         getListView().setEmptyView(mEmptyView);
-
-        update();
-
-        if (mWifiDisplayStatus.getFeatureState() == WifiDisplayStatus.FEATURE_STATE_UNAVAILABLE) {
-            activity.finish();
-        }
     }
 
     @Override
-    public void onDestroyView() {
-        getActivity().getActionBar().setCustomView(null);
-        super.onDestroyView();
-    }
+    public void onStart() {
+        super.onStart();
+        mStarted = true;
 
-    @Override
-    public void onResume() {
-        super.onResume();
-
-        Context context = getActivity();
+        final Context context = getActivity();
         IntentFilter filter = new IntentFilter();
         filter.addAction(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED);
         context.registerReceiver(mReceiver, filter);
@@ -163,136 +160,156 @@
         getContentResolver().registerContentObserver(Settings.Global.getUriFor(
                 Settings.Global.WIFI_DISPLAY_CERTIFICATION_ON), false, mSettingsObserver);
         getContentResolver().registerContentObserver(Settings.Global.getUriFor(
-            Settings.Global.WIFI_DISPLAY_WPS_CONFIG), false, mSettingsObserver);
+                Settings.Global.WIFI_DISPLAY_WPS_CONFIG), false, mSettingsObserver);
 
-        mDisplayManager.scanWifiDisplays();
+        mRouter.addCallback(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY, mRouterCallback,
+                MediaRouter.CALLBACK_FLAG_PERFORM_ACTIVE_SCAN);
 
-        update();
+        update(CHANGE_ALL);
     }
 
     @Override
-    public void onPause() {
-        super.onPause();
+    public void onStop() {
+        super.onStop();
+        mStarted = false;
 
-        Context context = getActivity();
+        final Context context = getActivity();
         context.unregisterReceiver(mReceiver);
 
         getContentResolver().unregisterContentObserver(mSettingsObserver);
+
+        mRouter.removeCallback(mRouterCallback);
+
+        unscheduleUpdate();
     }
 
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
-        MenuItem item = menu.add(Menu.NONE, MENU_ID_SCAN, 0,
-                mWifiDisplayStatus.getScanState() == WifiDisplayStatus.SCAN_STATE_SCANNING ?
-                        R.string.wifi_display_searching_for_devices :
-                                R.string.wifi_display_search_for_devices);
-        item.setEnabled(mWifiDisplayStatus.getFeatureState() == WifiDisplayStatus.FEATURE_STATE_ON
-                && mWifiDisplayStatus.getScanState() == WifiDisplayStatus.SCAN_STATE_NOT_SCANNING);
-        item.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
+        if (mWifiDisplayStatus != null && mWifiDisplayStatus.getFeatureState()
+                != WifiDisplayStatus.FEATURE_STATE_UNAVAILABLE) {
+            MenuItem item = menu.add(Menu.NONE, MENU_ID_ENABLE_WIFI_DISPLAY, 0,
+                    R.string.wifi_display_enable_menu_item);
+            item.setCheckable(true);
+            item.setChecked(mWifiDisplayOnSetting);
+        }
         super.onCreateOptionsMenu(menu, inflater);
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
-            case MENU_ID_SCAN:
-                if (mWifiDisplayStatus.getFeatureState() == WifiDisplayStatus.FEATURE_STATE_ON) {
-                    mDisplayManager.scanWifiDisplays();
-                }
+            case MENU_ID_ENABLE_WIFI_DISPLAY:
+                mWifiDisplayOnSetting = !item.isChecked();
+                item.setChecked(mWifiDisplayOnSetting);
+                Settings.Global.putInt(getContentResolver(),
+                        Settings.Global.WIFI_DISPLAY_ON, mWifiDisplayOnSetting ? 1 : 0);
                 return true;
         }
         return super.onOptionsItemSelected(item);
     }
 
-    @Override
-    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
-            Preference preference) {
-        if (preference instanceof WifiDisplayPreference) {
-            WifiDisplayPreference p = (WifiDisplayPreference)preference;
-            WifiDisplay display = p.getDisplay();
-
-            if (display.equals(mWifiDisplayStatus.getActiveDisplay())) {
-                showDisconnectDialog(display);
-            } else if (display.canConnect()){
-                mDisplayManager.connectWifiDisplay(display.getDeviceAddress());
+    private void scheduleUpdate(int changes) {
+        if (mStarted) {
+            if (mPendingChanges == 0) {
+                mHandler.post(mUpdateRunnable);
             }
+            mPendingChanges |= changes;
+        }
+    }
+
+    private void unscheduleUpdate() {
+        if (mPendingChanges != 0) {
+            mPendingChanges = 0;
+            mHandler.removeCallbacks(mUpdateRunnable);
+        }
+    }
+
+    private void update(int changes) {
+        boolean invalidateOptions = false;
+
+        // Update settings.
+        if ((changes & CHANGE_SETTINGS) != 0) {
+            mWifiDisplayOnSetting = Settings.Global.getInt(getContentResolver(),
+                    Settings.Global.WIFI_DISPLAY_ON, 0) != 0;
+            mWifiDisplayCertificationOn = Settings.Global.getInt(getContentResolver(),
+                    Settings.Global.WIFI_DISPLAY_CERTIFICATION_ON, 0) != 0;
+            mWpsConfig = Settings.Global.getInt(getContentResolver(),
+                Settings.Global.WIFI_DISPLAY_WPS_CONFIG, WpsInfo.INVALID);
+
+            // The wifi display enabled setting may have changed.
+            invalidateOptions = true;
         }
 
-        return super.onPreferenceTreeClick(preferenceScreen, preference);
-    }
+        // Update wifi display state.
+        if ((changes & CHANGE_WIFI_DISPLAY_STATUS) != 0) {
+            mWifiDisplayStatus = mDisplayManager.getWifiDisplayStatus();
 
-    private void update() {
-        mWifiDisplayOnSetting = Settings.Global.getInt(getContentResolver(),
-                Settings.Global.WIFI_DISPLAY_ON, 0) != 0;
-        mWifiDisplayCertificationOn = Settings.Global.getInt(getContentResolver(),
-                Settings.Global.WIFI_DISPLAY_CERTIFICATION_ON, 0) != 0;
-        mWpsConfig = Settings.Global.getInt(getContentResolver(),
-            Settings.Global.WIFI_DISPLAY_WPS_CONFIG, WpsInfo.INVALID);
-        mWifiDisplayStatus = mDisplayManager.getWifiDisplayStatus();
+            // The wifi display feature state may have changed.
+            invalidateOptions = true;
+        }
 
-        applyState();
-    }
-
-    private void applyState() {
-        final int featureState = mWifiDisplayStatus.getFeatureState();
-        mActionBarSwitch.setEnabled(featureState != WifiDisplayStatus.FEATURE_STATE_DISABLED);
-        mActionBarSwitch.setChecked(mWifiDisplayOnSetting);
-
+        // Rebuild the routes.
         final PreferenceScreen preferenceScreen = getPreferenceScreen();
         preferenceScreen.removeAll();
 
-        if (featureState == WifiDisplayStatus.FEATURE_STATE_ON) {
-            final WifiDisplay[] displays = mWifiDisplayStatus.getDisplays();
+        // Add all known remote display routes.
+        final int routeCount = mRouter.getRouteCount();
+        for (int i = 0; i < routeCount; i++) {
+            MediaRouter.RouteInfo route = mRouter.getRouteAt(i);
+            if (route.matchesTypes(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY)) {
+                preferenceScreen.addPreference(createRoutePreference(route));
+            }
+        }
 
+        // Additional features for wifi display routes.
+        if (mWifiDisplayStatus != null
+                && mWifiDisplayStatus.getFeatureState() == WifiDisplayStatus.FEATURE_STATE_ON) {
+            // Add all unpaired wifi displays.
+            for (WifiDisplay display : mWifiDisplayStatus.getDisplays()) {
+                if (!display.isRemembered() && display.isAvailable()
+                        && !display.equals(mWifiDisplayStatus.getActiveDisplay())) {
+                    preferenceScreen.addPreference(new UnpairedWifiDisplayPreference(
+                            getActivity(), display));
+                }
+            }
+
+            // Add the certification menu if enabled in developer options.
             if (mWifiDisplayCertificationOn) {
                 buildCertificationMenu(preferenceScreen);
             }
-
-            if (mPairedDevicesCategory == null) {
-                mPairedDevicesCategory = new PreferenceCategory(getActivity());
-                mPairedDevicesCategory.setTitle(R.string.wifi_display_paired_devices);
-            } else {
-                mPairedDevicesCategory.removeAll();
-            }
-            preferenceScreen.addPreference(mPairedDevicesCategory);
-
-            if (mAvailableDevicesCategory == null) {
-                mAvailableDevicesCategory = new ProgressCategory(getActivity(), null,
-                        R.string.wifi_display_no_devices_found);
-                mAvailableDevicesCategory.setTitle(R.string.wifi_display_available_devices);
-            } else {
-                mAvailableDevicesCategory.removeAll();
-            }
-            preferenceScreen.addPreference(mAvailableDevicesCategory);
-
-            for (WifiDisplay d : displays) {
-                if (d.isRemembered()) {
-                    mPairedDevicesCategory.addPreference(createWifiDisplayPreference(d));
-                } else if (d.isAvailable()){
-                    mAvailableDevicesCategory.addPreference(createWifiDisplayPreference(d));
-                }
-            }
-            if (mPairedDevicesCategory.getPreferenceCount() == 0) {
-                preferenceScreen.removePreference(mPairedDevicesCategory);
-            }
-            if (mWifiDisplayStatus.getScanState() == WifiDisplayStatus.SCAN_STATE_SCANNING) {
-                mAvailableDevicesCategory.setProgress(true);
-            } else {
-                mAvailableDevicesCategory.setProgress(false);
-            }
-        } else {
-            mEmptyView.setText(featureState == WifiDisplayStatus.FEATURE_STATE_OFF ?
-                    R.string.wifi_display_settings_empty_list_wifi_display_off :
-                            R.string.wifi_display_settings_empty_list_wifi_display_disabled);
         }
 
-        getActivity().invalidateOptionsMenu();
+        // Invalidate menu options if needed.
+        if (invalidateOptions) {
+            getActivity().invalidateOptionsMenu();
+        }
+    }
+
+    private RoutePreference createRoutePreference(MediaRouter.RouteInfo route) {
+        WifiDisplay display = findWifiDisplay(route.getDeviceAddress());
+        if (display != null) {
+            return new WifiDisplayRoutePreference(getActivity(), route, display);
+        } else {
+            return new RoutePreference(getActivity(), route);
+        }
+    }
+
+    private WifiDisplay findWifiDisplay(String deviceAddress) {
+        if (mWifiDisplayStatus != null && deviceAddress != null) {
+            for (WifiDisplay display : mWifiDisplayStatus.getDisplays()) {
+                if (display.getDeviceAddress().equals(deviceAddress)) {
+                    return display;
+                }
+            }
+        }
+        return null;
     }
 
     private void buildCertificationMenu(final PreferenceScreen preferenceScreen) {
         if (mCertCategory == null) {
             mCertCategory = new PreferenceCategory(getActivity());
             mCertCategory.setTitle(R.string.wifi_display_certification_heading);
+            mCertCategory.setOrder(ORDER_CERTIFICATION);
         } else {
             mCertCategory.removeAll();
         }
@@ -526,53 +543,22 @@
         });
     }
 
-    private Preference createWifiDisplayPreference(final WifiDisplay d) {
-        WifiDisplayPreference p = new WifiDisplayPreference(getActivity(), d);
-        if (d.equals(mWifiDisplayStatus.getActiveDisplay())) {
-            switch (mWifiDisplayStatus.getActiveDisplayState()) {
-                case WifiDisplayStatus.DISPLAY_STATE_CONNECTED:
-                    p.setSummary(R.string.wifi_display_status_connected);
-                    break;
-                case WifiDisplayStatus.DISPLAY_STATE_CONNECTING:
-                    p.setSummary(R.string.wifi_display_status_connecting);
-                    break;
-            }
-        } else if (d.isAvailable()) {
-            if (!d.canConnect()) {
-                p.setSummary(R.string.wifi_display_status_in_use);
-                p.setEnabled(false);
-            } else if (d.isRemembered()) {
-                p.setSummary(R.string.wifi_display_status_available);
-            }
+    private void toggleRoute(MediaRouter.RouteInfo route) {
+        if (route.isSelected()) {
+            MediaRouteDialogPresenter.showDialogFragment(getActivity(),
+                    MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY, null);
+        } else {
+            route.select();
         }
-        if (d.isRemembered()) {
-            p.setWidgetLayoutResource(R.layout.wifi_display_preference);
-        }
-        return p;
     }
 
-    private void showDisconnectDialog(final WifiDisplay display) {
-        DialogInterface.OnClickListener ok = new DialogInterface.OnClickListener() {
-            @Override
-            public void onClick(DialogInterface dialog, int which) {
-                if (display.equals(mWifiDisplayStatus.getActiveDisplay())) {
-                    mDisplayManager.disconnectWifiDisplay();
-                }
-            }
-        };
-
-        AlertDialog dialog = new AlertDialog.Builder(getActivity())
-                .setCancelable(true)
-                .setTitle(R.string.wifi_display_disconnect_title)
-                .setMessage(Html.fromHtml(getResources().getString(
-                        R.string.wifi_display_disconnect_text, display.getFriendlyDisplayName())))
-                .setPositiveButton(android.R.string.ok, ok)
-                .setNegativeButton(android.R.string.cancel, null)
-                .create();
-        dialog.show();
+    private void pairWifiDisplay(WifiDisplay display) {
+        if (display.canConnect()) {
+            mDisplayManager.connectWifiDisplay(display.getDeviceAddress());
+        }
     }
 
-    private void showOptionsDialog(final WifiDisplay display) {
+    private void showWifiDisplayOptionsDialog(final WifiDisplay display) {
         View view = getActivity().getLayoutInflater().inflate(R.layout.wifi_display_options, null);
         final EditText nameEditText = (EditText)view.findViewById(R.id.name);
         nameEditText.setText(display.getFriendlyDisplayName());
@@ -604,22 +590,12 @@
         dialog.show();
     }
 
-    private static boolean contains(WifiDisplay[] displays, String address) {
-        for (WifiDisplay d : displays) {
-            if (d.getDeviceAddress().equals(address)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    private final CompoundButton.OnCheckedChangeListener mSwitchOnCheckedChangedListener =
-            new CompoundButton.OnCheckedChangeListener() {
+    private final Runnable mUpdateRunnable = new Runnable() {
         @Override
-        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
-            mWifiDisplayOnSetting = isChecked;
-            Settings.Global.putInt(getContentResolver(),
-                    Settings.Global.WIFI_DISPLAY_ON, isChecked ? 1 : 0);
+        public void run() {
+            final int changes = mPendingChanges;
+            mPendingChanges = 0;
+            update(changes);
         }
     };
 
@@ -628,10 +604,7 @@
         public void onReceive(Context context, Intent intent) {
             String action = intent.getAction();
             if (action.equals(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED)) {
-                WifiDisplayStatus status = (WifiDisplayStatus)intent.getParcelableExtra(
-                        DisplayManager.EXTRA_WIFI_DISPLAY_STATUS);
-                mWifiDisplayStatus = status;
-                applyState();
+                scheduleUpdate(CHANGE_WIFI_DISPLAY_STATUS);
             }
         }
     };
@@ -639,23 +612,87 @@
     private final ContentObserver mSettingsObserver = new ContentObserver(new Handler()) {
         @Override
         public void onChange(boolean selfChange, Uri uri) {
-            update();
+            scheduleUpdate(CHANGE_SETTINGS);
         }
     };
 
-    private final class WifiDisplayPreference extends Preference
+    private final MediaRouter.Callback mRouterCallback = new MediaRouter.SimpleCallback() {
+        @Override
+        public void onRouteAdded(MediaRouter router, RouteInfo info) {
+            scheduleUpdate(CHANGE_ROUTES);
+        }
+
+        @Override
+        public void onRouteChanged(MediaRouter router, RouteInfo info) {
+            scheduleUpdate(CHANGE_ROUTES);
+        }
+
+        @Override
+        public void onRouteRemoved(MediaRouter router, RouteInfo info) {
+            scheduleUpdate(CHANGE_ROUTES);
+        }
+
+        @Override
+        public void onRouteSelected(MediaRouter router, int type, RouteInfo info) {
+            scheduleUpdate(CHANGE_ROUTES);
+        }
+
+        @Override
+        public void onRouteUnselected(MediaRouter router, int type, RouteInfo info) {
+            scheduleUpdate(CHANGE_ROUTES);
+        }
+    };
+
+    private class RoutePreference extends Preference
+            implements Preference.OnPreferenceClickListener {
+        private final MediaRouter.RouteInfo mRoute;
+
+        public RoutePreference(Context context, MediaRouter.RouteInfo route) {
+            super(context);
+
+            mRoute = route;
+            setTitle(route.getName());
+            setSummary(route.getDescription());
+            setEnabled(route.isEnabled());
+            if (route.isSelected()) {
+                setOrder(ORDER_CONNECTED);
+                if (route.isConnecting()) {
+                    setSummary(R.string.wifi_display_status_connecting);
+                } else {
+                    setSummary(R.string.wifi_display_status_connected);
+                }
+            } else {
+                if (isEnabled()) {
+                    setOrder(ORDER_AVAILABLE);
+                } else {
+                    setOrder(ORDER_UNAVAILABLE);
+                    if (route.getStatusCode() == MediaRouter.RouteInfo.STATUS_IN_USE) {
+                        setSummary(R.string.wifi_display_status_in_use);
+                    } else {
+                        setSummary(R.string.wifi_display_status_not_available);
+                    }
+                }
+            }
+            setOnPreferenceClickListener(this);
+        }
+
+        @Override
+        public boolean onPreferenceClick(Preference preference) {
+            toggleRoute(mRoute);
+            return true;
+        }
+    }
+
+    private class WifiDisplayRoutePreference extends RoutePreference
             implements View.OnClickListener {
         private final WifiDisplay mDisplay;
 
-        public WifiDisplayPreference(Context context, WifiDisplay display) {
-            super(context);
+        public WifiDisplayRoutePreference(Context context, MediaRouter.RouteInfo route,
+                WifiDisplay display) {
+            super(context, route);
 
             mDisplay = display;
-            setTitle(display.getFriendlyDisplayName());
-        }
-
-        public WifiDisplay getDisplay() {
-            return mDisplay;
+            setWidgetLayoutResource(R.layout.wifi_display_preference);
         }
 
         @Override
@@ -665,19 +702,46 @@
             ImageView deviceDetails = (ImageView) view.findViewById(R.id.deviceDetails);
             if (deviceDetails != null) {
                 deviceDetails.setOnClickListener(this);
-
                 if (!isEnabled()) {
                     TypedValue value = new TypedValue();
                     getContext().getTheme().resolveAttribute(android.R.attr.disabledAlpha,
                             value, true);
                     deviceDetails.setImageAlpha((int)(value.getFloat() * 255));
+                    deviceDetails.setEnabled(true); // always allow button to be pressed
                 }
             }
         }
 
         @Override
         public void onClick(View v) {
-            showOptionsDialog(mDisplay);
+            showWifiDisplayOptionsDialog(mDisplay);
+        }
+    }
+
+    private class UnpairedWifiDisplayPreference extends Preference
+            implements Preference.OnPreferenceClickListener {
+        private final WifiDisplay mDisplay;
+
+        public UnpairedWifiDisplayPreference(Context context, WifiDisplay display) {
+            super(context);
+
+            mDisplay = display;
+            setTitle(display.getFriendlyDisplayName());
+            setSummary(com.android.internal.R.string.wireless_display_route_description);
+            setEnabled(display.canConnect());
+            if (isEnabled()) {
+                setOrder(ORDER_AVAILABLE);
+            } else {
+                setOrder(ORDER_UNAVAILABLE);
+                setSummary(R.string.wifi_display_status_in_use);
+            }
+            setOnPreferenceClickListener(this);
+        }
+
+        @Override
+        public boolean onPreferenceClick(Preference preference) {
+            pairWifiDisplay(mDisplay);
+            return true;
         }
     }
 }