src/com/android/settings/wifi/WifiSettings.java

   1 /*
   2  * Copyright (C) 2010 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package com.android.settings.wifi;
  18
  19 import static android.os.UserManager.DISALLOW_CONFIG_WIFI;
  20
  21 import android.annotation.NonNull;
  22 import android.app.Activity;
  23 import android.app.Dialog;
  24 import android.app.admin.DevicePolicyManager;
  25 import android.content.ComponentName;
  26 import android.content.ContentResolver;
  27 import android.content.Context;
  28 import android.content.Intent;
  29 import android.content.pm.PackageManager;
  30 import android.content.pm.PackageManager.NameNotFoundException;
  31 import android.content.res.Resources;
  32 import android.net.ConnectivityManager;
  33 import android.net.NetworkInfo;
  34 import android.net.NetworkInfo.State;
  35 import android.net.wifi.WifiConfiguration;
  36 import android.net.wifi.WifiManager;
  37 import android.net.wifi.WpsInfo;
  38 import android.nfc.NfcAdapter;
  39 import android.os.Bundle;
  40 import android.os.HandlerThread;
  41 import android.os.Process;
  42 import android.provider.Settings;
  43 import android.support.annotation.VisibleForTesting;
  44 import android.support.v7.preference.Preference;
  45 import android.support.v7.preference.PreferenceCategory;
  46 import android.util.Log;
  47 import android.view.ContextMenu;
  48 import android.view.ContextMenu.ContextMenuInfo;
  49 import android.view.Menu;
  50 import android.view.MenuItem;
  51 import android.view.View;
  52 import android.widget.Toast;
  53
  54 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
  55 import com.android.settings.LinkifyUtils;
  56 import com.android.settings.R;
  57 import com.android.settings.RestrictedSettingsFragment;
  58 import com.android.settings.SettingsActivity;
  59 import com.android.settings.dashboard.SummaryLoader;
  60 import com.android.settings.location.ScanningSettings;
  61 import com.android.settings.search.BaseSearchIndexProvider;
  62 import com.android.settings.search.Indexable;
  63 import com.android.settings.search.SearchIndexableRaw;
  64 import com.android.settings.widget.SummaryUpdater.OnSummaryChangeListener;
  65 import com.android.settings.widget.SwitchBarController;
  66 import com.android.settings.wifi.details.WifiNetworkDetailsFragment;
  67 import com.android.settingslib.RestrictedLockUtils;
  68 import com.android.settingslib.wifi.AccessPoint;
  69 import com.android.settingslib.wifi.AccessPoint.AccessPointListener;
  70 import com.android.settingslib.wifi.AccessPointPreference;
  71 import com.android.settingslib.wifi.WifiTracker;
  72 import com.android.settingslib.wifi.WifiTrackerFactory;
  73
  74 import java.util.ArrayList;
  75 import java.util.List;
  76
  77 /**
  78  * Two types of UI are provided here.
  79  *
  80  * The first is for "usual Settings", appearing as any other Setup fragment.
  81  *
  82  * The second is for Setup Wizard, with a simplified interface that hides the action bar
  83  * and menus.
  84  */
  85 public class WifiSettings extends RestrictedSettingsFragment
  86         implements Indexable, WifiTracker.WifiListener, AccessPointListener,
  87         WifiDialog.WifiDialogListener {
  88
  89     private static final String TAG = "WifiSettings";
  90     private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
  91
  92     /* package */ static final int MENU_ID_WPS_PBC = Menu.FIRST;
  93     private static final int MENU_ID_WPS_PIN = Menu.FIRST + 1;
  94     private static final int MENU_ID_CONNECT = Menu.FIRST + 6;
  95     private static final int MENU_ID_FORGET = Menu.FIRST + 7;
  96     private static final int MENU_ID_MODIFY = Menu.FIRST + 8;
  97     private static final int MENU_ID_WRITE_NFC = Menu.FIRST + 9;
  98
  99     public static final int WIFI_DIALOG_ID = 1;
 100     /* package */ static final int WPS_PBC_DIALOG_ID = 2;
 101     private static final int WPS_PIN_DIALOG_ID = 3;
 102     private static final int WRITE_NFC_DIALOG_ID = 6;
 103
 104     // Instance state keys
 105     private static final String SAVE_DIALOG_MODE = "dialog_mode";
 106     private static final String SAVE_DIALOG_ACCESS_POINT_STATE = "wifi_ap_state";
 107     private static final String SAVED_WIFI_NFC_DIALOG_STATE = "wifi_nfc_dlg_state";
 108
 109     private static final String PREF_KEY_EMPTY_WIFI_LIST = "wifi_empty_list";
 110     private static final String PREF_KEY_CONNECTED_ACCESS_POINTS = "connected_access_point";
 111     private static final String PREF_KEY_ACCESS_POINTS = "access_points";
 112     private static final String PREF_KEY_ADDITIONAL_SETTINGS = "additional_settings";
 113     private static final String PREF_KEY_CONFIGURE_WIFI_SETTINGS = "configure_settings";
 114     private static final String PREF_KEY_SAVED_NETWORKS = "saved_networks";
 115
 116     private final Runnable mUpdateAccessPointsRunnable = () -> {
 117         updateAccessPointPreferences();
 118     };
 119     private final Runnable mHideProgressBarRunnable = () -> {
 120         setProgressBarVisible(false);
 121     };
 122
 123     protected WifiManager mWifiManager;
 124     private WifiManager.ActionListener mConnectListener;
 125     private WifiManager.ActionListener mSaveListener;
 126     private WifiManager.ActionListener mForgetListener;
 127
 128     /**
 129      * The state of {@link #isUiRestricted()} at {@link #onCreate(Bundle)}}. This is neccesary to
 130      * ensure that behavior is consistent if {@link #isUiRestricted()} changes. It could be changed
 131      * by the Test DPC tool in AFW mode.
 132      */
 133     private boolean mIsRestricted;
 134
 135     private WifiEnabler mWifiEnabler;
 136     // An access point being editted is stored here.
 137     private AccessPoint mSelectedAccessPoint;
 138
 139     private WifiDialog mDialog;
 140     private WriteWifiConfigToNfcDialog mWifiToNfcDialog;
 141
 142     private View mProgressHeader;
 143
 144     // this boolean extra specifies whether to disable the Next button when not connected. Used by
 145     // account creation outside of setup wizard.
 146     private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect";
 147     // This string extra specifies a network to open the connect dialog on, so the user can enter
 148     // network credentials.  This is used by quick settings for secured networks.
 149     private static final String EXTRA_START_CONNECT_SSID = "wifi_start_connect_ssid";
 150
 151     // should Next button only be enabled when we have a connection?
 152     private boolean mEnableNextOnConnection;
 153
 154     // Save the dialog details
 155     private int mDialogMode;
 156     private AccessPoint mDlgAccessPoint;
 157     private Bundle mAccessPointSavedState;
 158     private Bundle mWifiNfcDialogSavedState;
 159
 160     private WifiTracker mWifiTracker;
 161     private String mOpenSsid;
 162
 163     private HandlerThread mBgThread;
 164
 165     private AccessPointPreference.UserBadgeCache mUserBadgeCache;
 166
 167     private PreferenceCategory mConnectedAccessPointPreferenceCategory;
 168     private PreferenceCategory mAccessPointsPreferenceCategory;
 169     private PreferenceCategory mAdditionalSettingsPreferenceCategory;
 170     private Preference mAddPreference;
 171     private Preference mConfigureWifiSettingsPreference;
 172     private Preference mSavedNetworksPreference;
 173     private LinkablePreference mStatusMessagePreference;
 174
 175     // For Search
 176     private static final String DATA_KEY_REFERENCE = "main_toggle_wifi";
 177
 178     /* End of "used in Wifi Setup context" */
 179
 180     public WifiSettings() {
 181         super(DISALLOW_CONFIG_WIFI);
 182     }
 183
 184     @Override
 185     public void onViewCreated(View view, Bundle savedInstanceState) {
 186         super.onViewCreated(view, savedInstanceState);
 187         final Activity activity = getActivity();
 188         if (activity != null) {
 189             mProgressHeader = setPinnedHeaderView(R.layout.wifi_progress_header)
 190                     .findViewById(R.id.progress_bar_animation);
 191             setProgressBarVisible(false);
 192         }
 193     }
 194
 195     @Override
 196     public void onCreate(Bundle icicle) {
 197         super.onCreate(icicle);
 198
 199         // TODO(b/37429702): Add animations and preference comparator back after initial screen is
 200         // loaded (ODR).
 201         setAnimationAllowed(false);
 202
 203         addPreferencesFromResource(R.xml.wifi_settings);
 204
 205         mConnectedAccessPointPreferenceCategory =
 206                 (PreferenceCategory) findPreference(PREF_KEY_CONNECTED_ACCESS_POINTS);
 207         mAccessPointsPreferenceCategory =
 208                 (PreferenceCategory) findPreference(PREF_KEY_ACCESS_POINTS);
 209         mAdditionalSettingsPreferenceCategory =
 210                 (PreferenceCategory) findPreference(PREF_KEY_ADDITIONAL_SETTINGS);
 211         mConfigureWifiSettingsPreference = findPreference(PREF_KEY_CONFIGURE_WIFI_SETTINGS);
 212         mSavedNetworksPreference = findPreference(PREF_KEY_SAVED_NETWORKS);
 213
 214         Context prefContext = getPrefContext();
 215         mAddPreference = new Preference(prefContext);
 216         mAddPreference.setIcon(R.drawable.ic_menu_add_inset);
 217         mAddPreference.setTitle(R.string.wifi_add_network);
 218         mStatusMessagePreference = new LinkablePreference(prefContext);
 219
 220         mUserBadgeCache = new AccessPointPreference.UserBadgeCache(getPackageManager());
 221
 222         mIsRestricted = isUiRestricted();
 223
 224         mBgThread = new HandlerThread(TAG, Process.THREAD_PRIORITY_BACKGROUND);
 225         mBgThread.start();
 226     }
 227
 228     @Override
 229     public void onDestroy() {
 230         mBgThread.quit();
 231         super.onDestroy();
 232     }
 233
 234     @Override
 235     public void onActivityCreated(Bundle savedInstanceState) {
 236         super.onActivityCreated(savedInstanceState);
 237
 238         mWifiTracker = WifiTrackerFactory.create(
 239                 getActivity(), this, mBgThread.getLooper(), true, true, false);
 240         mWifiManager = mWifiTracker.getManager();
 241
 242         mConnectListener = new WifiManager.ActionListener() {
 243                                    @Override
 244                                    public void onSuccess() {
 245                                    }
 246                                    @Override
 247                                    public void onFailure(int reason) {
 248                                        Activity activity = getActivity();
 249                                        if (activity != null) {
 250                                            Toast.makeText(activity,
 251                                                 R.string.wifi_failed_connect_message,
 252                                                 Toast.LENGTH_SHORT).show();
 253                                        }
 254                                    }
 255                                };
 256
 257         mSaveListener = new WifiManager.ActionListener() {
 258                                 @Override
 259                                 public void onSuccess() {
 260                                 }
 261                                 @Override
 262                                 public void onFailure(int reason) {
 263                                     Activity activity = getActivity();
 264                                     if (activity != null) {
 265                                         Toast.makeText(activity,
 266                                             R.string.wifi_failed_save_message,
 267                                             Toast.LENGTH_SHORT).show();
 268                                     }
 269                                 }
 270                             };
 271
 272         mForgetListener = new WifiManager.ActionListener() {
 273                                    @Override
 274                                    public void onSuccess() {
 275                                    }
 276                                    @Override
 277                                    public void onFailure(int reason) {
 278                                        Activity activity = getActivity();
 279                                        if (activity != null) {
 280                                            Toast.makeText(activity,
 281                                                R.string.wifi_failed_forget_message,
 282                                                Toast.LENGTH_SHORT).show();
 283                                        }
 284                                    }
 285                                };
 286
 287         if (savedInstanceState != null) {
 288             mDialogMode = savedInstanceState.getInt(SAVE_DIALOG_MODE);
 289             if (savedInstanceState.containsKey(SAVE_DIALOG_ACCESS_POINT_STATE)) {
 290                 mAccessPointSavedState =
 291                     savedInstanceState.getBundle(SAVE_DIALOG_ACCESS_POINT_STATE);
 292             }
 293
 294             if (savedInstanceState.containsKey(SAVED_WIFI_NFC_DIALOG_STATE)) {
 295                 mWifiNfcDialogSavedState =
 296                     savedInstanceState.getBundle(SAVED_WIFI_NFC_DIALOG_STATE);
 297             }
 298         }
 299
 300         // if we're supposed to enable/disable the Next button based on our current connection
 301         // state, start it off in the right state
 302         Intent intent = getActivity().getIntent();
 303         mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false);
 304
 305         if (mEnableNextOnConnection) {
 306             if (hasNextButton()) {
 307                 final ConnectivityManager connectivity = (ConnectivityManager)
 308                         getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
 309                 if (connectivity != null) {
 310                     NetworkInfo info = connectivity.getNetworkInfo(
 311                             ConnectivityManager.TYPE_WIFI);
 312                     changeNextButtonState(info.isConnected());
 313                 }
 314             }
 315         }
 316
 317         registerForContextMenu(getListView());
 318         setHasOptionsMenu(true);
 319
 320         if (intent.hasExtra(EXTRA_START_CONNECT_SSID)) {
 321             mOpenSsid = intent.getStringExtra(EXTRA_START_CONNECT_SSID);
 322         }
 323     }
 324
 325     @Override
 326     public void onDestroyView() {
 327         super.onDestroyView();
 328
 329         if (mWifiEnabler != null) {
 330             mWifiEnabler.teardownSwitchController();
 331         }
 332     }
 333
 334     @Override
 335     public void onStart() {
 336         super.onStart();
 337
 338         // On/off switch is hidden for Setup Wizard (returns null)
 339         mWifiEnabler = createWifiEnabler();
 340
 341         mWifiTracker.startTracking();
 342
 343         if (mIsRestricted) {
 344             if (!isUiRestrictedByOnlyAdmin()) {
 345                 getEmptyTextView().setText(R.string.wifi_empty_list_user_restricted);
 346             }
 347             getPreferenceScreen().removeAll();
 348             return;
 349         }
 350
 351         onWifiStateChanged(mWifiManager.getWifiState());
 352     }
 353
 354     /**
 355      * Only update the AP list if there are not any APs currently shown.
 356      *
 357      * <p>Thus forceUpdate will only be called during cold start or when toggling between wifi on
 358      * and off. In other use cases, the previous APs will remain until the next update is received
 359      * from {@link WifiTracker}.
 360      */
 361     private void conditionallyForceUpdateAPs() {
 362         if (mAccessPointsPreferenceCategory.getPreferenceCount() > 0
 363                 && mAccessPointsPreferenceCategory.getPreference(0) instanceof
 364                         AccessPointPreference) {
 365             // Make sure we don't update due to callbacks initiated by sticky broadcasts in
 366             // WifiTracker.
 367             Log.d(TAG, "Did not force update APs due to existing APs displayed");
 368             getView().removeCallbacks(mUpdateAccessPointsRunnable);
 369             return;
 370         }
 371         setProgressBarVisible(true);
 372         mWifiTracker.forceUpdate();
 373         if (DEBUG) {
 374             Log.d(TAG, "WifiSettings force update APs: " + mWifiTracker.getAccessPoints());
 375         }
 376         getView().removeCallbacks(mUpdateAccessPointsRunnable);
 377         updateAccessPointPreferences();
 378     }
 379
 380     /**
 381      * @return new WifiEnabler or null (as overridden by WifiSettingsForSetupWizard)
 382      */
 383     private WifiEnabler createWifiEnabler() {
 384         final SettingsActivity activity = (SettingsActivity) getActivity();
 385         return new WifiEnabler(activity, new SwitchBarController(activity.getSwitchBar()),
 386             mMetricsFeatureProvider);
 387     }
 388
 389     @Override
 390     public void onResume() {
 391         final Activity activity = getActivity();
 392         super.onResume();
 393         if (mWifiEnabler != null) {
 394             mWifiEnabler.resume(activity);
 395         }
 396     }
 397
 398     @Override
 399     public void onPause() {
 400         super.onPause();
 401         if (mWifiEnabler != null) {
 402             mWifiEnabler.pause();
 403         }
 404     }
 405
 406     @Override
 407     public void onStop() {
 408         mWifiTracker.stopTracking();
 409         getView().removeCallbacks(mUpdateAccessPointsRunnable);
 410         getView().removeCallbacks(mHideProgressBarRunnable);
 411         super.onStop();
 412     }
 413
 414     @Override
 415     public int getMetricsCategory() {
 416         return MetricsEvent.WIFI;
 417     }
 418
 419     @Override
 420     public void onSaveInstanceState(Bundle outState) {
 421         super.onSaveInstanceState(outState);
 422
 423         // If the dialog is showing, save its state.
 424         if (mDialog != null && mDialog.isShowing()) {
 425             outState.putInt(SAVE_DIALOG_MODE, mDialogMode);
 426             if (mDlgAccessPoint != null) {
 427                 mAccessPointSavedState = new Bundle();
 428                 mDlgAccessPoint.saveWifiState(mAccessPointSavedState);
 429                 outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState);
 430             }
 431         }
 432
 433         if (mWifiToNfcDialog != null && mWifiToNfcDialog.isShowing()) {
 434             Bundle savedState = new Bundle();
 435             mWifiToNfcDialog.saveState(savedState);
 436             outState.putBundle(SAVED_WIFI_NFC_DIALOG_STATE, savedState);
 437         }
 438     }
 439
 440     @Override
 441     public boolean onOptionsItemSelected(MenuItem item) {
 442         // If the user is not allowed to configure wifi, do not handle menu selections.
 443         if (mIsRestricted) {
 444             return false;
 445         }
 446
 447         switch (item.getItemId()) {
 448             case MENU_ID_WPS_PBC:
 449                 showDialog(WPS_PBC_DIALOG_ID);
 450                 return true;
 451             case MENU_ID_WPS_PIN:
 452                 showDialog(WPS_PIN_DIALOG_ID);
 453                 return true;
 454         }
 455         return super.onOptionsItemSelected(item);
 456     }
 457
 458     @Override
 459     public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) {
 460             Preference preference = (Preference) view.getTag();
 461
 462             if (preference instanceof LongPressAccessPointPreference) {
 463                 mSelectedAccessPoint =
 464                         ((LongPressAccessPointPreference) preference).getAccessPoint();
 465                 menu.setHeaderTitle(mSelectedAccessPoint.getSsid());
 466                 if (mSelectedAccessPoint.isConnectable()) {
 467                     menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect);
 468                 }
 469
 470                 WifiConfiguration config = mSelectedAccessPoint.getConfig();
 471                 // Some configs are ineditable
 472                 if (isEditabilityLockedDown(getActivity(), config)) {
 473                     return;
 474                 }
 475
 476                 if (mSelectedAccessPoint.isSaved() || mSelectedAccessPoint.isEphemeral()) {
 477                     // Allow forgetting a network if either the network is saved or ephemerally
 478                     // connected. (In the latter case, "forget" blacklists the network so it won't
 479                     // be used again, ephemerally).
 480                     menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget);
 481                 }
 482                 if (mSelectedAccessPoint.isSaved()) {
 483                     menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify);
 484                     NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
 485                     if (nfcAdapter != null && nfcAdapter.isEnabled() &&
 486                             mSelectedAccessPoint.getSecurity() != AccessPoint.SECURITY_NONE) {
 487                         // Only allow writing of NFC tags for password-protected networks.
 488                         menu.add(Menu.NONE, MENU_ID_WRITE_NFC, 0, R.string.wifi_menu_write_to_nfc);
 489                     }
 490                 }
 491             }
 492     }
 493
 494     @Override
 495     public boolean onContextItemSelected(MenuItem item) {
 496         if (mSelectedAccessPoint == null) {
 497             return super.onContextItemSelected(item);
 498         }
 499         switch (item.getItemId()) {
 500             case MENU_ID_CONNECT: {
 501                 boolean isSavedNetwork = mSelectedAccessPoint.isSaved();
 502                 if (isSavedNetwork) {
 503                     connect(mSelectedAccessPoint.getConfig(), isSavedNetwork);
 504                 } else if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE) {
 505                     /** Bypass dialog for unsecured networks */
 506                     mSelectedAccessPoint.generateOpenNetworkConfig();
 507                     connect(mSelectedAccessPoint.getConfig(), isSavedNetwork);
 508                 } else {
 509                     showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT);
 510                 }
 511                 return true;
 512             }
 513             case MENU_ID_FORGET: {
 514                 forget();
 515                 return true;
 516             }
 517             case MENU_ID_MODIFY: {
 518                 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_MODIFY);
 519                 return true;
 520             }
 521             case MENU_ID_WRITE_NFC:
 522                 showDialog(WRITE_NFC_DIALOG_ID);
 523                 return true;
 524
 525         }
 526         return super.onContextItemSelected(item);
 527     }
 528
 529     @Override
 530     public boolean onPreferenceTreeClick(Preference preference) {
 531         // If the preference has a fragment set, open that
 532         if (preference.getFragment() != null) {
 533             preference.setOnPreferenceClickListener(null);
 534             return super.onPreferenceTreeClick(preference);
 535         }
 536
 537         if (preference instanceof LongPressAccessPointPreference) {
 538             mSelectedAccessPoint = ((LongPressAccessPointPreference) preference).getAccessPoint();
 539             if (mSelectedAccessPoint == null) {
 540                 return false;
 541             }
 542             if (mSelectedAccessPoint.isActive()) {
 543                 return super.onPreferenceTreeClick(preference);
 544             }
 545             /**
 546              * Bypass dialog and connect to unsecured networks, or previously connected saved
 547              * networks, or Passpoint provided networks.
 548              */
 549             WifiConfiguration config = mSelectedAccessPoint.getConfig();
 550             if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE) {
 551                 mSelectedAccessPoint.generateOpenNetworkConfig();
 552                 connect(mSelectedAccessPoint.getConfig(), mSelectedAccessPoint.isSaved());
 553             } else if (mSelectedAccessPoint.isSaved() && config != null
 554                     && config.getNetworkSelectionStatus() != null
 555                     && config.getNetworkSelectionStatus().getHasEverConnected()) {
 556                 connect(config, true /* isSavedNetwork */);
 557             } else if (mSelectedAccessPoint.isPasspoint()) {
 558                 // Access point provided by an installed Passpoint provider, connect using
 559                 // the associated config.
 560                 connect(config, true /* isSavedNetwork */);
 561             } else {
 562                 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT);
 563             }
 564         } else if (preference == mAddPreference) {
 565             onAddNetworkPressed();
 566         } else {
 567             return super.onPreferenceTreeClick(preference);
 568         }
 569         return true;
 570     }
 571
 572     private void showDialog(AccessPoint accessPoint, int dialogMode) {
 573         if (accessPoint != null) {
 574             WifiConfiguration config = accessPoint.getConfig();
 575             if (isEditabilityLockedDown(getActivity(), config) && accessPoint.isActive()) {
 576                 RestrictedLockUtils.sendShowAdminSupportDetailsIntent(getActivity(),
 577                         RestrictedLockUtils.getDeviceOwner(getActivity()));
 578                 return;
 579             }
 580         }
 581
 582         if (mDialog != null) {
 583             removeDialog(WIFI_DIALOG_ID);
 584             mDialog = null;
 585         }
 586
 587         // Save the access point and edit mode
 588         mDlgAccessPoint = accessPoint;
 589         mDialogMode = dialogMode;
 590
 591         showDialog(WIFI_DIALOG_ID);
 592     }
 593
 594     @Override
 595     public Dialog onCreateDialog(int dialogId) {
 596         switch (dialogId) {
 597             case WIFI_DIALOG_ID:
 598                 AccessPoint ap = mDlgAccessPoint; // For manual launch
 599                 if (ap == null) { // For re-launch from saved state
 600                     if (mAccessPointSavedState != null) {
 601                         ap = new AccessPoint(getActivity(), mAccessPointSavedState);
 602                         // For repeated orientation changes
 603                         mDlgAccessPoint = ap;
 604                         // Reset the saved access point data
 605                         mAccessPointSavedState = null;
 606                     }
 607                 }
 608                 // If it's null, fine, it's for Add Network
 609                 mSelectedAccessPoint = ap;
 610                 mDialog = new WifiDialog(getActivity(), this, ap, mDialogMode,
 611                         /* no hide submit/connect */ false);
 612                 return mDialog;
 613             case WPS_PBC_DIALOG_ID:
 614                 return new WpsDialog(getActivity(), WpsInfo.PBC);
 615             case WPS_PIN_DIALOG_ID:
 616                 return new WpsDialog(getActivity(), WpsInfo.DISPLAY);
 617             case WRITE_NFC_DIALOG_ID:
 618                 if (mSelectedAccessPoint != null) {
 619                     mWifiToNfcDialog = new WriteWifiConfigToNfcDialog(
 620                             getActivity(),
 621                             mSelectedAccessPoint.getSecurity(),
 622                             new WifiManagerWrapper(mWifiManager));
 623                 } else if (mWifiNfcDialogSavedState != null) {
 624                     mWifiToNfcDialog = new WriteWifiConfigToNfcDialog(getActivity(),
 625                             mWifiNfcDialogSavedState, new WifiManagerWrapper(mWifiManager));
 626                 }
 627
 628                 return mWifiToNfcDialog;
 629         }
 630         return super.onCreateDialog(dialogId);
 631     }
 632
 633     @Override
 634     public int getDialogMetricsCategory(int dialogId) {
 635         switch (dialogId) {
 636             case WIFI_DIALOG_ID:
 637                 return MetricsEvent.DIALOG_WIFI_AP_EDIT;
 638             case WPS_PBC_DIALOG_ID:
 639                 return MetricsEvent.DIALOG_WIFI_PBC;
 640             case WPS_PIN_DIALOG_ID:
 641                 return MetricsEvent.DIALOG_WIFI_PIN;
 642             case WRITE_NFC_DIALOG_ID:
 643                 return MetricsEvent.DIALOG_WIFI_WRITE_NFC;
 644             default:
 645                 return 0;
 646         }
 647     }
 648
 649     /**
 650      * Called to indicate the list of AccessPoints has been updated and
 651      * getAccessPoints should be called to get the latest information.
 652      */
 653     @Override
 654     public void onAccessPointsChanged() {
 655         Log.d(TAG, "onAccessPointsChanged (WifiTracker) callback initiated");
 656         updateAccessPointsDelayed();
 657     }
 658
 659     /**
 660      * Updates access points from {@link WifiManager#getScanResults()}. Adds a delay to have
 661      * progress bar displayed before starting to modify APs.
 662      */
 663     private void updateAccessPointsDelayed() {
 664         // Safeguard from some delayed event handling
 665         if (getActivity() != null && !mIsRestricted && mWifiManager.isWifiEnabled()) {
 666             setProgressBarVisible(true);
 667             getView().postDelayed(mUpdateAccessPointsRunnable, 300 /* delay milliseconds */);
 668         }
 669     }
 670
 671     /** Called when the state of Wifi has changed. */
 672     @Override
 673     public void onWifiStateChanged(int state) {
 674         if (mIsRestricted) {
 675             return;
 676         }
 677
 678         final int wifiState = mWifiManager.getWifiState();
 679         switch (wifiState) {
 680             case WifiManager.WIFI_STATE_ENABLED:
 681                 conditionallyForceUpdateAPs();
 682                 break;
 683
 684             case WifiManager.WIFI_STATE_ENABLING:
 685                 removeConnectedAccessPointPreference();
 686                 mAccessPointsPreferenceCategory.removeAll();
 687                 addMessagePreference(R.string.wifi_starting);
 688                 setProgressBarVisible(true);
 689                 break;
 690
 691             case WifiManager.WIFI_STATE_DISABLING:
 692                 removeConnectedAccessPointPreference();
 693                 mAccessPointsPreferenceCategory.removeAll();
 694                 addMessagePreference(R.string.wifi_stopping);
 695                 break;
 696
 697             case WifiManager.WIFI_STATE_DISABLED:
 698                 setOffMessage();
 699                 setAdditionalSettingsSummaries();
 700                 setProgressBarVisible(false);
 701                 break;
 702         }
 703     }
 704
 705     /**
 706      * Called when the connection state of wifi has changed and isConnected
 707      * should be called to get the updated state.
 708      */
 709     @Override
 710     public void onConnectedChanged() {
 711         updateAccessPointsDelayed();
 712         changeNextButtonState(mWifiTracker.isConnected());
 713     }
 714
 715     private void updateAccessPointPreferences() {
 716         // in case state has changed
 717         if (!mWifiManager.isWifiEnabled()) {
 718             return;
 719         }
 720         // AccessPoints are sorted by the WifiTracker
 721         final List<AccessPoint> accessPoints = mWifiTracker.getAccessPoints();
 722         if (DEBUG) {
 723             Log.d(TAG, "updateAccessPoints called for: " + accessPoints);
 724         }
 725
 726         boolean hasAvailableAccessPoints = false;
 727         mAccessPointsPreferenceCategory.removePreference(mStatusMessagePreference);
 728         cacheRemoveAllPrefs(mAccessPointsPreferenceCategory);
 729
 730         int index =
 731                 configureConnectedAccessPointPreferenceCategory(accessPoints) ? 1 : 0;
 732         int numAccessPoints = accessPoints.size();
 733         for (; index < numAccessPoints; index++) {
 734             AccessPoint accessPoint = accessPoints.get(index);
 735             // Ignore access points that are out of range.
 736             if (accessPoint.isReachable()) {
 737                 String key = AccessPointPreference.generatePreferenceKey(accessPoint);
 738                 hasAvailableAccessPoints = true;
 739                 LongPressAccessPointPreference pref =
 740                         (LongPressAccessPointPreference) getCachedPreference(key);
 741                 if (pref != null) {
 742                     pref.setOrder(index);
 743                     continue;
 744                 }
 745                 LongPressAccessPointPreference preference =
 746                         createLongPressActionPointPreference(accessPoint);
 747                 preference.setKey(key);
 748                 preference.setOrder(index);
 749                 if (mOpenSsid != null && mOpenSsid.equals(accessPoint.getSsidStr())
 750                         && !accessPoint.isSaved()
 751                         && accessPoint.getSecurity() != AccessPoint.SECURITY_NONE) {
 752                     onPreferenceTreeClick(preference);
 753                     mOpenSsid = null;
 754                 }
 755                 mAccessPointsPreferenceCategory.addPreference(preference);
 756                 accessPoint.setListener(WifiSettings.this);
 757                 preference.refresh();
 758             }
 759         }
 760         removeCachedPrefs(mAccessPointsPreferenceCategory);
 761         mAddPreference.setOrder(index);
 762         mAccessPointsPreferenceCategory.addPreference(mAddPreference);
 763         setAdditionalSettingsSummaries();
 764
 765         if (!hasAvailableAccessPoints) {
 766             setProgressBarVisible(true);
 767             Preference pref = new Preference(getPrefContext());
 768             pref.setSelectable(false);
 769             pref.setSummary(R.string.wifi_empty_list_wifi_on);
 770             pref.setOrder(index++);
 771             pref.setKey(PREF_KEY_EMPTY_WIFI_LIST);
 772             mAccessPointsPreferenceCategory.addPreference(pref);
 773         } else {
 774             // Continuing showing progress bar for an additional delay to overlap with animation
 775             getView().postDelayed(mHideProgressBarRunnable, 1700 /* delay millis */);
 776         }
 777     }
 778
 779     @NonNull
 780     private LongPressAccessPointPreference createLongPressActionPointPreference(
 781             AccessPoint accessPoint) {
 782         return new LongPressAccessPointPreference(accessPoint, getPrefContext(), mUserBadgeCache,
 783                 false, R.drawable.ic_wifi_signal_0, this);
 784     }
 785
 786     /**
 787      * Configure the ConnectedAccessPointPreferenceCategory and return true if the Category was
 788      * shown.
 789      */
 790     private boolean configureConnectedAccessPointPreferenceCategory(
 791             List<AccessPoint> accessPoints) {
 792         if (accessPoints.size() == 0) {
 793             removeConnectedAccessPointPreference();
 794             return false;
 795         }
 796
 797         AccessPoint connectedAp = accessPoints.get(0);
 798         if (!connectedAp.isActive()) {
 799             removeConnectedAccessPointPreference();
 800             return false;
 801         }
 802
 803         // Is the preference category empty?
 804         if (mConnectedAccessPointPreferenceCategory.getPreferenceCount() == 0) {
 805             addConnectedAccessPointPreference(connectedAp);
 806             return true;
 807         }
 808
 809         // Is the previous currently connected SSID different from the new one?
 810         if (!((AccessPointPreference)
 811                 mConnectedAccessPointPreferenceCategory.getPreference(0))
 812                         .getAccessPoint().getSsidStr().equals(
 813                                 connectedAp.getSsidStr())) {
 814             removeConnectedAccessPointPreference();
 815             addConnectedAccessPointPreference(connectedAp);
 816             return true;
 817         }
 818
 819         // Else same AP is connected, simply refresh the connected access point preference
 820         // (first and only access point in this category).
 821         ((LongPressAccessPointPreference) mConnectedAccessPointPreferenceCategory.getPreference(0))
 822                 .refresh();
 823         return true;
 824     }
 825
 826     /**
 827      * Creates a Preference for the given {@link AccessPoint} and adds it to the
 828      * {@link #mConnectedAccessPointPreferenceCategory}.
 829      */
 830     private void addConnectedAccessPointPreference(AccessPoint connectedAp) {
 831         String key = connectedAp.getBssid();
 832         LongPressAccessPointPreference pref = (LongPressAccessPointPreference)
 833                 getCachedPreference(key);
 834         if (pref == null) {
 835             pref = createLongPressActionPointPreference(connectedAp);
 836         }
 837
 838         // Save the state of the current access point in the bundle so that we can restore it
 839         // in the Wifi Network Details Fragment
 840         pref.getAccessPoint().saveWifiState(pref.getExtras());
 841         pref.setFragment(WifiNetworkDetailsFragment.class.getName());
 842         pref.refresh();
 843
 844         mConnectedAccessPointPreferenceCategory.addPreference(pref);
 845         mConnectedAccessPointPreferenceCategory.setVisible(true);
 846     }
 847
 848     /** Removes all preferences and hide the {@link #mConnectedAccessPointPreferenceCategory}. */
 849     private void removeConnectedAccessPointPreference() {
 850         mConnectedAccessPointPreferenceCategory.removeAll();
 851         mConnectedAccessPointPreferenceCategory.setVisible(false);
 852     }
 853
 854     private void setAdditionalSettingsSummaries() {
 855         mAdditionalSettingsPreferenceCategory.addPreference(mConfigureWifiSettingsPreference);
 856         final int defaultWakeupAvailable = getResources().getInteger(
 857                 com.android.internal.R.integer.config_wifi_wakeup_available);
 858         boolean wifiWakeupAvailable = Settings.Global.getInt(
 859                 getContentResolver(), Settings.Global.WIFI_WAKEUP_AVAILABLE, defaultWakeupAvailable)
 860                 == 1;
 861         if (wifiWakeupAvailable) {
 862             boolean wifiWakeupEnabled = Settings.Global.getInt(
 863                     getContentResolver(), Settings.Global.WIFI_WAKEUP_ENABLED, 0) == 1;
 864             mConfigureWifiSettingsPreference.setSummary(getString(wifiWakeupEnabled
 865                     ? R.string.wifi_configure_settings_preference_summary_wakeup_on
 866                     : R.string.wifi_configure_settings_preference_summary_wakeup_off));
 867         }
 868         int numSavedNetworks = mWifiTracker.getNumSavedNetworks();
 869         if (numSavedNetworks > 0) {
 870             mAdditionalSettingsPreferenceCategory.addPreference(mSavedNetworksPreference);
 871             mSavedNetworksPreference.setSummary(
 872                     getResources().getQuantityString(R.plurals.wifi_saved_access_points_summary,
 873                             numSavedNetworks, numSavedNetworks));
 874         } else {
 875             mAdditionalSettingsPreferenceCategory.removePreference(mSavedNetworksPreference);
 876         }
 877     }
 878
 879     private void setOffMessage() {
 880         final CharSequence title = getText(R.string.wifi_empty_list_wifi_off);
 881         // Don't use WifiManager.isScanAlwaysAvailable() to check the Wi-Fi scanning mode. Instead,
 882         // read the system settings directly. Because when the device is in Airplane mode, even if
 883         // Wi-Fi scanning mode is on, WifiManager.isScanAlwaysAvailable() still returns "off".
 884         final boolean wifiScanningMode = Settings.Global.getInt(getActivity().getContentResolver(),
 885                 Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1;
 886         final CharSequence description = wifiScanningMode ? getText(R.string.wifi_scan_notify_text)
 887                 : getText(R.string.wifi_scan_notify_text_scanning_off);
 888         final LinkifyUtils.OnClickListener clickListener = new LinkifyUtils.OnClickListener() {
 889             @Override
 890             public void onClick() {
 891                 final SettingsActivity activity = (SettingsActivity) getActivity();
 892                 activity.startPreferencePanel(WifiSettings.this,
 893                         ScanningSettings.class.getName(),
 894                         null, R.string.location_scanning_screen_title, null, null, 0);
 895             }
 896         };
 897         mStatusMessagePreference.setText(title, description, clickListener);
 898         removeConnectedAccessPointPreference();
 899         mAccessPointsPreferenceCategory.removeAll();
 900         mAccessPointsPreferenceCategory.addPreference(mStatusMessagePreference);
 901     }
 902
 903     private void addMessagePreference(int messageId) {
 904         mStatusMessagePreference.setTitle(messageId);
 905         removeConnectedAccessPointPreference();
 906         mAccessPointsPreferenceCategory.removeAll();
 907         mAccessPointsPreferenceCategory.addPreference(mStatusMessagePreference);
 908     }
 909
 910     protected void setProgressBarVisible(boolean visible) {
 911         if (mProgressHeader != null) {
 912             mProgressHeader.setVisibility(visible ? View.VISIBLE : View.GONE);
 913         }
 914     }
 915
 916     /**
 917      * Renames/replaces "Next" button when appropriate. "Next" button usually exists in
 918      * Wifi setup screens, not in usual wifi settings screen.
 919      *
 920      * @param enabled true when the device is connected to a wifi network.
 921      */
 922     private void changeNextButtonState(boolean enabled) {
 923         if (mEnableNextOnConnection && hasNextButton()) {
 924             getNextButton().setEnabled(enabled);
 925         }
 926     }
 927
 928     @Override
 929     public void onForget(WifiDialog dialog) {
 930         forget();
 931     }
 932
 933     @Override
 934     public void onSubmit(WifiDialog dialog) {
 935         if (mDialog != null) {
 936             submit(mDialog.getController());
 937         }
 938     }
 939
 940     /* package */ void submit(WifiConfigController configController) {
 941
 942         final WifiConfiguration config = configController.getConfig();
 943
 944         if (config == null) {
 945             if (mSelectedAccessPoint != null
 946                     && mSelectedAccessPoint.isSaved()) {
 947                 connect(mSelectedAccessPoint.getConfig(), true /* isSavedNetwork */);
 948             }
 949         } else if (configController.getMode() == WifiConfigUiBase.MODE_MODIFY) {
 950             mWifiManager.save(config, mSaveListener);
 951         } else {
 952             mWifiManager.save(config, mSaveListener);
 953             if (mSelectedAccessPoint != null) { // Not an "Add network"
 954                 connect(config, false /* isSavedNetwork */);
 955             }
 956         }
 957
 958         mWifiTracker.resumeScanning();
 959     }
 960
 961     /* package */ void forget() {
 962         mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_FORGET);
 963         if (!mSelectedAccessPoint.isSaved()) {
 964             if (mSelectedAccessPoint.getNetworkInfo() != null &&
 965                     mSelectedAccessPoint.getNetworkInfo().getState() != State.DISCONNECTED) {
 966                 // Network is active but has no network ID - must be ephemeral.
 967                 mWifiManager.disableEphemeralNetwork(
 968                         AccessPoint.convertToQuotedString(mSelectedAccessPoint.getSsidStr()));
 969             } else {
 970                 // Should not happen, but a monkey seems to trigger it
 971                 Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig());
 972                 return;
 973             }
 974         } else if (mSelectedAccessPoint.getConfig().isPasspoint()) {
 975             mWifiManager.removePasspointConfiguration(mSelectedAccessPoint.getConfig().FQDN);
 976         } else {
 977             mWifiManager.forget(mSelectedAccessPoint.getConfig().networkId, mForgetListener);
 978         }
 979
 980         mWifiTracker.resumeScanning();
 981
 982         // We need to rename/replace "Next" button in wifi setup context.
 983         changeNextButtonState(false);
 984     }
 985
 986     protected void connect(final WifiConfiguration config, boolean isSavedNetwork) {
 987         // Log subtype if configuration is a saved network.
 988         mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT,
 989                 isSavedNetwork);
 990         mWifiManager.connect(config, mConnectListener);
 991         scrollToPreference(mConnectedAccessPointPreferenceCategory);
 992     }
 993
 994     protected void connect(final int networkId, boolean isSavedNetwork) {
 995         // Log subtype if configuration is a saved network.
 996         mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT,
 997                 isSavedNetwork);
 998         mWifiManager.connect(networkId, mConnectListener);
 999     }
1000
1001     /**
1002      * Called when "add network" button is pressed.
1003      */
1004     /* package */ void onAddNetworkPressed() {
1005         mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_ADD_NETWORK);
1006         // No exact access point is selected.
1007         mSelectedAccessPoint = null;
1008         showDialog(null, WifiConfigUiBase.MODE_CONNECT);
1009     }
1010
1011     @Override
1012     protected int getHelpResource() {
1013         return R.string.help_url_wifi;
1014     }
1015
1016     @Override
1017     public void onAccessPointChanged(final AccessPoint accessPoint) {
1018         Log.d(TAG, "onAccessPointChanged (singular) callback initiated");
1019         View view = getView();
1020         if (view != null) {
1021             view.post(new Runnable() {
1022                 @Override
1023                 public void run() {
1024                     Object tag = accessPoint.getTag();
1025                     if (tag != null) {
1026                         ((LongPressAccessPointPreference) tag).refresh();
1027                     }
1028                 }
1029             });
1030         }
1031     }
1032
1033     @Override
1034     public void onLevelChanged(AccessPoint accessPoint) {
1035         ((LongPressAccessPointPreference) accessPoint.getTag()).onLevelChanged();
1036     }
1037
1038     public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
1039         new BaseSearchIndexProvider() {
1040             @Override
1041             public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) {
1042                 final List<SearchIndexableRaw> result = new ArrayList<>();
1043                 final Resources res = context.getResources();
1044
1045                 // Add fragment title
1046                 SearchIndexableRaw data = new SearchIndexableRaw(context);
1047                 data.title = res.getString(R.string.wifi_settings);
1048                 data.screenTitle = res.getString(R.string.wifi_settings);
1049                 data.keywords = res.getString(R.string.keywords_wifi);
1050                 data.key = DATA_KEY_REFERENCE;
1051                 result.add(data);
1052
1053                 // Add saved Wi-Fi access points
1054                 final List<AccessPoint> accessPoints =
1055                         WifiTracker.getCurrentAccessPoints(context, true, false, false);
1056                 for (AccessPoint accessPoint : accessPoints) {
1057                     data = new SearchIndexableRaw(context);
1058                     data.title = accessPoint.getSsidStr();
1059                     data.screenTitle = res.getString(R.string.wifi_settings);
1060                     data.enabled = enabled;
1061                     result.add(data);
1062                 }
1063
1064                 return result;
1065             }
1066         };
1067
1068     /**
1069      * Returns true if the config is not editable through Settings.
1070      * @param context Context of caller
1071      * @param config The WiFi config.
1072      * @return true if the config is not editable through Settings.
1073      */
1074     static boolean isEditabilityLockedDown(Context context, WifiConfiguration config) {
1075         return !canModifyNetwork(context, config);
1076     }
1077
1078     /**
1079      * This method is a stripped version of WifiConfigStore.canModifyNetwork.
1080      * TODO: refactor to have only one method.
1081      * @param context Context of caller
1082      * @param config The WiFi config.
1083      * @return true if Settings can modify the config.
1084      */
1085     static boolean canModifyNetwork(Context context, WifiConfiguration config) {
1086         if (config == null) {
1087             return true;
1088         }
1089
1090         final DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService(
1091                 Context.DEVICE_POLICY_SERVICE);
1092
1093         // Check if device has DPM capability. If it has and dpm is still null, then we
1094         // treat this case with suspicion and bail out.
1095         final PackageManager pm = context.getPackageManager();
1096         if (pm.hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) && dpm == null) {
1097             return false;
1098         }
1099
1100         boolean isConfigEligibleForLockdown = false;
1101         if (dpm != null) {
1102             final ComponentName deviceOwner = dpm.getDeviceOwnerComponentOnAnyUser();
1103             if (deviceOwner != null) {
1104                 final int deviceOwnerUserId = dpm.getDeviceOwnerUserId();
1105                 try {
1106                     final int deviceOwnerUid = pm.getPackageUidAsUser(deviceOwner.getPackageName(),
1107                             deviceOwnerUserId);
1108                     isConfigEligibleForLockdown = deviceOwnerUid == config.creatorUid;
1109                 } catch (NameNotFoundException e) {
1110                     // don't care
1111                 }
1112             }
1113         }
1114         if (!isConfigEligibleForLockdown) {
1115             return true;
1116         }
1117
1118         final ContentResolver resolver = context.getContentResolver();
1119         final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver,
1120                 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0;
1121         return !isLockdownFeatureEnabled;
1122     }
1123
1124     private static class SummaryProvider
1125             implements SummaryLoader.SummaryProvider, OnSummaryChangeListener {
1126
1127         private final Context mContext;
1128         private final SummaryLoader mSummaryLoader;
1129
1130         @VisibleForTesting
1131         WifiSummaryUpdater mSummaryHelper;
1132
1133         public SummaryProvider(Context context, SummaryLoader summaryLoader) {
1134             mContext = context;
1135             mSummaryLoader = summaryLoader;
1136             mSummaryHelper = new WifiSummaryUpdater(mContext, this);
1137         }
1138
1139
1140         @Override
1141         public void setListening(boolean listening) {
1142             mSummaryHelper.register(listening);
1143         }
1144
1145         @Override
1146         public void onSummaryChanged(String summary) {
1147             mSummaryLoader.setSummary(this, summary);
1148         }
1149     }
1150
1151     public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY
1152             = new SummaryLoader.SummaryProviderFactory() {
1153         @Override
1154         public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity,
1155                                                                    SummaryLoader summaryLoader) {
1156             return new SummaryProvider(activity, summaryLoader);
1157         }
1158     };
1159 }