WifiSettings.java revision 07db40434b7ba496e473826e21e2e959fea365e5
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 17package com.android.settings.wifi; 18 19import android.annotation.NonNull; 20import android.app.Activity; 21import android.app.Dialog; 22import android.app.admin.DevicePolicyManager; 23import android.content.ComponentName; 24import android.content.ContentResolver; 25import android.content.Context; 26import android.content.Intent; 27import android.content.pm.PackageManager; 28import android.content.pm.PackageManager.NameNotFoundException; 29import android.content.res.Resources; 30import android.net.ConnectivityManager; 31import android.net.NetworkInfo; 32import android.net.NetworkInfo.State; 33import android.net.wifi.WifiConfiguration; 34import android.net.wifi.WifiManager; 35import android.net.wifi.WpsInfo; 36import android.nfc.NfcAdapter; 37import android.os.Bundle; 38import android.os.HandlerThread; 39import android.os.Process; 40import android.provider.Settings; 41import android.support.annotation.VisibleForTesting; 42import android.support.v7.preference.Preference; 43import android.support.v7.preference.PreferenceCategory; 44import android.support.v7.preference.PreferenceManager; 45import android.text.TextUtils; 46import android.util.Log; 47import android.view.ContextMenu; 48import android.view.ContextMenu.ContextMenuInfo; 49import android.view.Menu; 50import android.view.MenuItem; 51import android.view.View; 52import android.widget.ProgressBar; 53import android.widget.Toast; 54 55import com.android.internal.logging.nano.MetricsProto.MetricsEvent; 56import com.android.settings.LinkifyUtils; 57import com.android.settings.R; 58import com.android.settings.RestrictedSettingsFragment; 59import com.android.settings.SettingsActivity; 60import com.android.settings.dashboard.SummaryLoader; 61import com.android.settings.location.ScanningSettings; 62import com.android.settings.search.BaseSearchIndexProvider; 63import com.android.settings.search.Indexable; 64import com.android.settings.search.SearchIndexableRaw; 65import com.android.settings.widget.SummaryUpdater.OnSummaryChangeListener; 66import com.android.settings.widget.SwitchBarController; 67import com.android.settings.wifi.details.WifiNetworkDetailsFragment; 68import com.android.settingslib.RestrictedLockUtils; 69import com.android.settingslib.wifi.AccessPoint; 70import com.android.settingslib.wifi.AccessPoint.AccessPointListener; 71import com.android.settingslib.wifi.AccessPointPreference; 72import com.android.settingslib.wifi.WifiTracker; 73 74import java.util.ArrayList; 75import java.util.List; 76 77import static android.os.UserManager.DISALLOW_CONFIG_WIFI; 78 79/** 80 * Two types of UI are provided here. 81 * 82 * The first is for "usual Settings", appearing as any other Setup fragment. 83 * 84 * The second is for Setup Wizard, with a simplified interface that hides the action bar 85 * and menus. 86 */ 87public class WifiSettings extends RestrictedSettingsFragment 88 implements Indexable, WifiTracker.WifiListener, AccessPointListener, 89 WifiDialog.WifiDialogListener { 90 91 private static final String TAG = "WifiSettings"; 92 93 /* package */ static final int MENU_ID_WPS_PBC = Menu.FIRST; 94 private static final int MENU_ID_WPS_PIN = Menu.FIRST + 1; 95 private static final int MENU_ID_CONNECT = Menu.FIRST + 6; 96 private static final int MENU_ID_FORGET = Menu.FIRST + 7; 97 private static final int MENU_ID_MODIFY = Menu.FIRST + 8; 98 private static final int MENU_ID_WRITE_NFC = Menu.FIRST + 9; 99 100 public static final int WIFI_DIALOG_ID = 1; 101 /* package */ static final int WPS_PBC_DIALOG_ID = 2; 102 private static final int WPS_PIN_DIALOG_ID = 3; 103 private static final int WRITE_NFC_DIALOG_ID = 6; 104 105 // Instance state keys 106 private static final String SAVE_DIALOG_MODE = "dialog_mode"; 107 private static final String SAVE_DIALOG_ACCESS_POINT_STATE = "wifi_ap_state"; 108 private static final String SAVED_WIFI_NFC_DIALOG_STATE = "wifi_nfc_dlg_state"; 109 110 private static final String PREF_KEY_EMPTY_WIFI_LIST = "wifi_empty_list"; 111 private static final String PREF_KEY_CONNECTED_ACCESS_POINTS = "connected_access_point"; 112 private static final String PREF_KEY_ACCESS_POINTS = "access_points"; 113 private static final String PREF_KEY_ADDITIONAL_SETTINGS = "additional_settings"; 114 private static final String PREF_KEY_CONFIGURE_WIFI_SETTINGS = "configure_settings"; 115 private static final String PREF_KEY_SAVED_NETWORKS = "saved_networks"; 116 117 protected WifiManager mWifiManager; 118 private WifiManager.ActionListener mConnectListener; 119 private WifiManager.ActionListener mSaveListener; 120 private WifiManager.ActionListener mForgetListener; 121 122 private WifiEnabler mWifiEnabler; 123 // An access point being editted is stored here. 124 private AccessPoint mSelectedAccessPoint; 125 126 private WifiDialog mDialog; 127 private WriteWifiConfigToNfcDialog mWifiToNfcDialog; 128 129 private ProgressBar mProgressHeader; 130 131 // this boolean extra specifies whether to disable the Next button when not connected. Used by 132 // account creation outside of setup wizard. 133 private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect"; 134 // This string extra specifies a network to open the connect dialog on, so the user can enter 135 // network credentials. This is used by quick settings for secured networks. 136 private static final String EXTRA_START_CONNECT_SSID = "wifi_start_connect_ssid"; 137 138 // should Next button only be enabled when we have a connection? 139 private boolean mEnableNextOnConnection; 140 141 // should see all networks instead of collapsing networks and showing mSeeAllNetworksPreference. 142 private boolean mSeeAllNetworks; 143 private static final int NETWORKS_TO_INITIALLY_SHOW = 5; 144 145 // Save the dialog details 146 private int mDialogMode; 147 private AccessPoint mDlgAccessPoint; 148 private Bundle mAccessPointSavedState; 149 private Bundle mWifiNfcDialogSavedState; 150 151 private WifiTracker mWifiTracker; 152 private String mOpenSsid; 153 154 private HandlerThread mBgThread; 155 156 private AccessPointPreference.UserBadgeCache mUserBadgeCache; 157 158 private PreferenceCategory mConnectedAccessPointPreferenceCategory; 159 private PreferenceCategory mAccessPointsPreferenceCategory; 160 private PreferenceCategory mAdditionalSettingsPreferenceCategory; 161 private Preference mAddPreference; 162 private Preference mSeeAllNetworksPreference; 163 private Preference mConfigureWifiSettingsPreference; 164 private Preference mSavedNetworksPreference; 165 private LinkablePreference mStatusMessagePreference; 166 167 // For Search 168 private static final String DATA_KEY_REFERENCE = "main_toggle_wifi"; 169 170 /* End of "used in Wifi Setup context" */ 171 172 public WifiSettings() { 173 super(DISALLOW_CONFIG_WIFI); 174 } 175 176 @Override 177 public void onViewCreated(View view, Bundle savedInstanceState) { 178 super.onViewCreated(view, savedInstanceState); 179 final Activity activity = getActivity(); 180 if (activity != null) { 181 if (!isUiRestricted()) { 182 mProgressHeader = (ProgressBar) setPinnedHeaderView(R.layout.wifi_progress_header); 183 } 184 } 185 } 186 187 @Override 188 public void onCreate(Bundle icicle) { 189 super.onCreate(icicle); 190 191 getPreferenceManager().setPreferenceComparisonCallback( 192 new PreferenceManager.SimplePreferenceComparisonCallback()); 193 addPreferencesFromResource(R.xml.wifi_settings); 194 195 mConnectedAccessPointPreferenceCategory = 196 (PreferenceCategory) findPreference(PREF_KEY_CONNECTED_ACCESS_POINTS); 197 198 mAccessPointsPreferenceCategory = 199 (PreferenceCategory) findPreference(PREF_KEY_ACCESS_POINTS); 200 mAdditionalSettingsPreferenceCategory = 201 (PreferenceCategory) findPreference(PREF_KEY_ADDITIONAL_SETTINGS); 202 mConfigureWifiSettingsPreference = findPreference(PREF_KEY_CONFIGURE_WIFI_SETTINGS); 203 mSavedNetworksPreference = findPreference(PREF_KEY_SAVED_NETWORKS); 204 205 if (isUiRestricted()) { 206 getPreferenceScreen().removePreference(mAdditionalSettingsPreferenceCategory); 207 } 208 209 Context prefContext = getPrefContext(); 210 mAddPreference = new Preference(prefContext); 211 mAddPreference.setIcon(R.drawable.ic_menu_add_inset); 212 mAddPreference.setTitle(R.string.wifi_add_network); 213 mSeeAllNetworksPreference = new Preference(prefContext); 214 mSeeAllNetworksPreference.setIcon(R.drawable.ic_arrow_down_24dp); 215 mSeeAllNetworksPreference.setTitle(R.string.wifi_see_all_networks_button_title); 216 mSeeAllNetworks = false; 217 mStatusMessagePreference = new LinkablePreference(prefContext); 218 219 mUserBadgeCache = new AccessPointPreference.UserBadgeCache(getPackageManager()); 220 221 mBgThread = new HandlerThread(TAG, Process.THREAD_PRIORITY_BACKGROUND); 222 mBgThread.start(); 223 } 224 225 @Override 226 public void onDestroy() { 227 mBgThread.quit(); 228 super.onDestroy(); 229 } 230 231 @Override 232 public void onActivityCreated(Bundle savedInstanceState) { 233 super.onActivityCreated(savedInstanceState); 234 235 mWifiTracker = 236 new WifiTracker(getActivity(), this, mBgThread.getLooper(), true, true, false); 237 mWifiManager = mWifiTracker.getManager(); 238 239 mConnectListener = new WifiManager.ActionListener() { 240 @Override 241 public void onSuccess() { 242 } 243 @Override 244 public void onFailure(int reason) { 245 Activity activity = getActivity(); 246 if (activity != null) { 247 Toast.makeText(activity, 248 R.string.wifi_failed_connect_message, 249 Toast.LENGTH_SHORT).show(); 250 } 251 } 252 }; 253 254 mSaveListener = new WifiManager.ActionListener() { 255 @Override 256 public void onSuccess() { 257 } 258 @Override 259 public void onFailure(int reason) { 260 Activity activity = getActivity(); 261 if (activity != null) { 262 Toast.makeText(activity, 263 R.string.wifi_failed_save_message, 264 Toast.LENGTH_SHORT).show(); 265 } 266 } 267 }; 268 269 mForgetListener = new WifiManager.ActionListener() { 270 @Override 271 public void onSuccess() { 272 } 273 @Override 274 public void onFailure(int reason) { 275 Activity activity = getActivity(); 276 if (activity != null) { 277 Toast.makeText(activity, 278 R.string.wifi_failed_forget_message, 279 Toast.LENGTH_SHORT).show(); 280 } 281 } 282 }; 283 284 if (savedInstanceState != null) { 285 mDialogMode = savedInstanceState.getInt(SAVE_DIALOG_MODE); 286 if (savedInstanceState.containsKey(SAVE_DIALOG_ACCESS_POINT_STATE)) { 287 mAccessPointSavedState = 288 savedInstanceState.getBundle(SAVE_DIALOG_ACCESS_POINT_STATE); 289 } 290 291 if (savedInstanceState.containsKey(SAVED_WIFI_NFC_DIALOG_STATE)) { 292 mWifiNfcDialogSavedState = 293 savedInstanceState.getBundle(SAVED_WIFI_NFC_DIALOG_STATE); 294 } 295 } 296 297 // if we're supposed to enable/disable the Next button based on our current connection 298 // state, start it off in the right state 299 Intent intent = getActivity().getIntent(); 300 mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false); 301 302 if (mEnableNextOnConnection) { 303 if (hasNextButton()) { 304 final ConnectivityManager connectivity = (ConnectivityManager) 305 getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); 306 if (connectivity != null) { 307 NetworkInfo info = connectivity.getNetworkInfo( 308 ConnectivityManager.TYPE_WIFI); 309 changeNextButtonState(info.isConnected()); 310 } 311 } 312 } 313 314 registerForContextMenu(getListView()); 315 setHasOptionsMenu(true); 316 317 if (intent.hasExtra(EXTRA_START_CONNECT_SSID)) { 318 mOpenSsid = intent.getStringExtra(EXTRA_START_CONNECT_SSID); 319 onAccessPointsChanged(); 320 } 321 } 322 323 @Override 324 public void onDestroyView() { 325 super.onDestroyView(); 326 327 if (mWifiEnabler != null) { 328 mWifiEnabler.teardownSwitchController(); 329 } 330 } 331 332 @Override 333 public void onStart() { 334 super.onStart(); 335 336 // On/off switch is hidden for Setup Wizard (returns null) 337 mWifiEnabler = createWifiEnabler(); 338 } 339 340 /** 341 * @return new WifiEnabler or null (as overridden by WifiSettingsForSetupWizard) 342 */ 343 private WifiEnabler createWifiEnabler() { 344 final SettingsActivity activity = (SettingsActivity) getActivity(); 345 return new WifiEnabler(activity, new SwitchBarController(activity.getSwitchBar()), 346 mMetricsFeatureProvider); 347 } 348 349 @Override 350 public void onResume() { 351 final Activity activity = getActivity(); 352 super.onResume(); 353 if (mWifiEnabler != null) { 354 mWifiEnabler.resume(activity); 355 } 356 357 mWifiTracker.startTracking(); 358 activity.invalidateOptionsMenu(); 359 } 360 361 @Override 362 public void onPause() { 363 super.onPause(); 364 if (mWifiEnabler != null) { 365 mWifiEnabler.pause(); 366 } 367 368 mWifiTracker.stopTracking(); 369 } 370 371 @Override 372 public int getMetricsCategory() { 373 return MetricsEvent.WIFI; 374 } 375 376 @Override 377 public void onSaveInstanceState(Bundle outState) { 378 super.onSaveInstanceState(outState); 379 380 // If the dialog is showing, save its state. 381 if (mDialog != null && mDialog.isShowing()) { 382 outState.putInt(SAVE_DIALOG_MODE, mDialogMode); 383 if (mDlgAccessPoint != null) { 384 mAccessPointSavedState = new Bundle(); 385 mDlgAccessPoint.saveWifiState(mAccessPointSavedState); 386 outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState); 387 } 388 } 389 390 if (mWifiToNfcDialog != null && mWifiToNfcDialog.isShowing()) { 391 Bundle savedState = new Bundle(); 392 mWifiToNfcDialog.saveState(savedState); 393 outState.putBundle(SAVED_WIFI_NFC_DIALOG_STATE, savedState); 394 } 395 } 396 397 @Override 398 public boolean onOptionsItemSelected(MenuItem item) { 399 // If the user is not allowed to configure wifi, do not handle menu selections. 400 if (isUiRestricted()) return false; 401 402 switch (item.getItemId()) { 403 case MENU_ID_WPS_PBC: 404 showDialog(WPS_PBC_DIALOG_ID); 405 return true; 406 /* 407 case MENU_ID_P2P: 408 if (getActivity() instanceof SettingsActivity) { 409 ((SettingsActivity) getActivity()).startPreferencePanel( 410 WifiP2pSettings.class.getCanonicalName(), 411 null, 412 R.string.wifi_p2p_settings_title, null, 413 this, 0); 414 } else { 415 startFragment(this, WifiP2pSettings.class.getCanonicalName(), 416 R.string.wifi_p2p_settings_title, -1, null); 417 } 418 return true; 419 */ 420 case MENU_ID_WPS_PIN: 421 showDialog(WPS_PIN_DIALOG_ID); 422 return true; 423 } 424 return super.onOptionsItemSelected(item); 425 } 426 427 @Override 428 public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) { 429 Preference preference = (Preference) view.getTag(); 430 431 if (preference instanceof LongPressAccessPointPreference) { 432 mSelectedAccessPoint = 433 ((LongPressAccessPointPreference) preference).getAccessPoint(); 434 menu.setHeaderTitle(mSelectedAccessPoint.getSsid()); 435 if (mSelectedAccessPoint.isConnectable()) { 436 menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect); 437 } 438 439 WifiConfiguration config = mSelectedAccessPoint.getConfig(); 440 // Some configs are ineditable 441 if (isEditabilityLockedDown(getActivity(), config)) { 442 return; 443 } 444 445 if (mSelectedAccessPoint.isSaved() || mSelectedAccessPoint.isEphemeral()) { 446 // Allow forgetting a network if either the network is saved or ephemerally 447 // connected. (In the latter case, "forget" blacklists the network so it won't 448 // be used again, ephemerally). 449 menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget); 450 } 451 if (mSelectedAccessPoint.isSaved()) { 452 menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify); 453 NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(getActivity()); 454 if (nfcAdapter != null && nfcAdapter.isEnabled() && 455 mSelectedAccessPoint.getSecurity() != AccessPoint.SECURITY_NONE) { 456 // Only allow writing of NFC tags for password-protected networks. 457 menu.add(Menu.NONE, MENU_ID_WRITE_NFC, 0, R.string.wifi_menu_write_to_nfc); 458 } 459 } 460 } 461 } 462 463 @Override 464 public boolean onContextItemSelected(MenuItem item) { 465 if (mSelectedAccessPoint == null) { 466 return super.onContextItemSelected(item); 467 } 468 switch (item.getItemId()) { 469 case MENU_ID_CONNECT: { 470 boolean isSavedNetwork = mSelectedAccessPoint.isSaved(); 471 if (isSavedNetwork) { 472 connect(mSelectedAccessPoint.getConfig(), isSavedNetwork); 473 } else if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE) { 474 /** Bypass dialog for unsecured networks */ 475 mSelectedAccessPoint.generateOpenNetworkConfig(); 476 connect(mSelectedAccessPoint.getConfig(), isSavedNetwork); 477 } else { 478 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT); 479 } 480 return true; 481 } 482 case MENU_ID_FORGET: { 483 forget(); 484 return true; 485 } 486 case MENU_ID_MODIFY: { 487 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_MODIFY); 488 return true; 489 } 490 case MENU_ID_WRITE_NFC: 491 showDialog(WRITE_NFC_DIALOG_ID); 492 return true; 493 494 } 495 return super.onContextItemSelected(item); 496 } 497 498 @Override 499 public boolean onPreferenceTreeClick(Preference preference) { 500 // If the preference has a fragment set, open that 501 if (preference.getFragment() != null) { 502 preference.setOnPreferenceClickListener(null); 503 return super.onPreferenceTreeClick(preference); 504 } 505 506 if (preference instanceof LongPressAccessPointPreference) { 507 mSelectedAccessPoint = ((LongPressAccessPointPreference) preference).getAccessPoint(); 508 if (mSelectedAccessPoint == null) { 509 return false; 510 } 511 /** Bypass dialog for unsecured, unsaved, and inactive networks */ 512 if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE && 513 !mSelectedAccessPoint.isSaved() && !mSelectedAccessPoint.isActive()) { 514 mSelectedAccessPoint.generateOpenNetworkConfig(); 515 connect(mSelectedAccessPoint.getConfig(), false /* isSavedNetwork */); 516 } else if (mSelectedAccessPoint.isSaved()) { 517 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_VIEW); 518 } else { 519 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT); 520 } 521 } else if (preference == mAddPreference) { 522 onAddNetworkPressed(); 523 } else if (preference == mSeeAllNetworksPreference) { 524 mSeeAllNetworks = true; 525 onAccessPointsChanged(); 526 } else { 527 return super.onPreferenceTreeClick(preference); 528 } 529 return true; 530 } 531 532 private void showDialog(AccessPoint accessPoint, int dialogMode) { 533 if (accessPoint != null) { 534 WifiConfiguration config = accessPoint.getConfig(); 535 if (isEditabilityLockedDown(getActivity(), config) && accessPoint.isActive()) { 536 RestrictedLockUtils.sendShowAdminSupportDetailsIntent(getActivity(), 537 RestrictedLockUtils.getDeviceOwner(getActivity())); 538 return; 539 } 540 } 541 542 if (mDialog != null) { 543 removeDialog(WIFI_DIALOG_ID); 544 mDialog = null; 545 } 546 547 // Save the access point and edit mode 548 mDlgAccessPoint = accessPoint; 549 mDialogMode = dialogMode; 550 551 showDialog(WIFI_DIALOG_ID); 552 } 553 554 @Override 555 public Dialog onCreateDialog(int dialogId) { 556 switch (dialogId) { 557 case WIFI_DIALOG_ID: 558 AccessPoint ap = mDlgAccessPoint; // For manual launch 559 if (ap == null) { // For re-launch from saved state 560 if (mAccessPointSavedState != null) { 561 ap = new AccessPoint(getActivity(), mAccessPointSavedState); 562 // For repeated orientation changes 563 mDlgAccessPoint = ap; 564 // Reset the saved access point data 565 mAccessPointSavedState = null; 566 } 567 } 568 // If it's null, fine, it's for Add Network 569 mSelectedAccessPoint = ap; 570 mDialog = new WifiDialog(getActivity(), this, ap, mDialogMode, 571 /* no hide submit/connect */ false); 572 return mDialog; 573 case WPS_PBC_DIALOG_ID: 574 return new WpsDialog(getActivity(), WpsInfo.PBC); 575 case WPS_PIN_DIALOG_ID: 576 return new WpsDialog(getActivity(), WpsInfo.DISPLAY); 577 case WRITE_NFC_DIALOG_ID: 578 if (mSelectedAccessPoint != null) { 579 mWifiToNfcDialog = new WriteWifiConfigToNfcDialog( 580 getActivity(), mSelectedAccessPoint.getConfig().networkId, 581 mSelectedAccessPoint.getSecurity(), 582 mWifiManager); 583 } else if (mWifiNfcDialogSavedState != null) { 584 mWifiToNfcDialog = new WriteWifiConfigToNfcDialog( 585 getActivity(), mWifiNfcDialogSavedState, mWifiManager); 586 } 587 588 return mWifiToNfcDialog; 589 } 590 return super.onCreateDialog(dialogId); 591 } 592 593 @Override 594 public int getDialogMetricsCategory(int dialogId) { 595 switch (dialogId) { 596 case WIFI_DIALOG_ID: 597 return MetricsEvent.DIALOG_WIFI_AP_EDIT; 598 case WPS_PBC_DIALOG_ID: 599 return MetricsEvent.DIALOG_WIFI_PBC; 600 case WPS_PIN_DIALOG_ID: 601 return MetricsEvent.DIALOG_WIFI_PIN; 602 case WRITE_NFC_DIALOG_ID: 603 return MetricsEvent.DIALOG_WIFI_WRITE_NFC; 604 default: 605 return 0; 606 } 607 } 608 609 /** 610 * Shows the latest access points available with supplemental information like 611 * the strength of network and the security for it. 612 */ 613 @Override 614 public void onAccessPointsChanged() { 615 // Safeguard from some delayed event handling 616 if (getActivity() == null) return; 617 if (isUiRestricted()) { 618 removeConnectedAccessPointPreference(); 619 mAccessPointsPreferenceCategory.removeAll(); 620 if (!isUiRestrictedByOnlyAdmin()) { 621 addMessagePreference(R.string.wifi_empty_list_user_restricted); 622 } 623 return; 624 } 625 final int wifiState = mWifiManager.getWifiState(); 626 627 switch (wifiState) { 628 case WifiManager.WIFI_STATE_ENABLED: 629 // AccessPoints are sorted by the WifiTracker 630 final List<AccessPoint> accessPoints = mWifiTracker.getAccessPoints(); 631 632 boolean hasAvailableAccessPoints = false; 633 mAccessPointsPreferenceCategory.removePreference(mStatusMessagePreference); 634 cacheRemoveAllPrefs(mAccessPointsPreferenceCategory); 635 636 int index = configureConnectedAccessPointPreferenceCategory(accessPoints) ? 1 : 0; 637 boolean fewerNetworksThanLimit = 638 accessPoints.size() <= index + NETWORKS_TO_INITIALLY_SHOW; 639 int numAccessPointsToShow = mSeeAllNetworks || fewerNetworksThanLimit 640 ? accessPoints.size() : index + NETWORKS_TO_INITIALLY_SHOW; 641 642 for (; index < numAccessPointsToShow; index++) { 643 AccessPoint accessPoint = accessPoints.get(index); 644 // Ignore access points that are out of range. 645 if (accessPoint.getLevel() != -1) { 646 String key = accessPoint.getBssid(); 647 if (TextUtils.isEmpty(key)) { 648 key = accessPoint.getSsidStr(); 649 } 650 hasAvailableAccessPoints = true; 651 LongPressAccessPointPreference pref = (LongPressAccessPointPreference) 652 getCachedPreference(key); 653 if (pref != null) { 654 pref.setOrder(index); 655 continue; 656 } 657 LongPressAccessPointPreference 658 preference = createLongPressActionPointPreference(accessPoint); 659 preference.setKey(key); 660 preference.setOrder(index); 661 if (mOpenSsid != null && mOpenSsid.equals(accessPoint.getSsidStr()) 662 && !accessPoint.isSaved() 663 && accessPoint.getSecurity() != AccessPoint.SECURITY_NONE) { 664 onPreferenceTreeClick(preference); 665 mOpenSsid = null; 666 } 667 mAccessPointsPreferenceCategory.addPreference(preference); 668 accessPoint.setListener(this); 669 preference.refresh(); 670 } 671 } 672 removeCachedPrefs(mAccessPointsPreferenceCategory); 673 if (!hasAvailableAccessPoints) { 674 setProgressBarVisible(true); 675 Preference pref = new Preference(getPrefContext()); 676 pref.setSelectable(false); 677 pref.setSummary(R.string.wifi_empty_list_wifi_on); 678 pref.setOrder(index++); 679 pref.setKey(PREF_KEY_EMPTY_WIFI_LIST); 680 mAccessPointsPreferenceCategory.addPreference(pref); 681 } else { 682 setProgressBarVisible(false); 683 } 684 if (mSeeAllNetworks || fewerNetworksThanLimit) { 685 mAccessPointsPreferenceCategory.removePreference(mSeeAllNetworksPreference); 686 mAddPreference.setOrder(index); 687 mAccessPointsPreferenceCategory.addPreference(mAddPreference); 688 } else { 689 mAccessPointsPreferenceCategory.removePreference(mAddPreference); 690 mSeeAllNetworksPreference.setOrder(index); 691 mAccessPointsPreferenceCategory.addPreference(mSeeAllNetworksPreference); 692 } 693 setConfigureWifiSettingsVisibility(); 694 break; 695 696 case WifiManager.WIFI_STATE_ENABLING: 697 removeConnectedAccessPointPreference(); 698 mAccessPointsPreferenceCategory.removeAll(); 699 setProgressBarVisible(true); 700 break; 701 702 case WifiManager.WIFI_STATE_DISABLING: 703 addMessagePreference(R.string.wifi_stopping); 704 setProgressBarVisible(true); 705 break; 706 707 case WifiManager.WIFI_STATE_DISABLED: 708 setOffMessage(); 709 setConfigureWifiSettingsVisibility(); 710 setProgressBarVisible(false); 711 break; 712 } 713 } 714 715 @NonNull 716 private LongPressAccessPointPreference createLongPressActionPointPreference( 717 AccessPoint accessPoint) { 718 return new LongPressAccessPointPreference(accessPoint, getPrefContext(), mUserBadgeCache, 719 false, R.drawable.ic_wifi_signal_0, this); 720 } 721 722 /** 723 * Configure the ConnectedAccessPointPreferenceCategory and return true if the Category was 724 * shown. 725 */ 726 private boolean configureConnectedAccessPointPreferenceCategory( 727 List<AccessPoint> accessPoints) { 728 if (accessPoints.size() == 0) { 729 removeConnectedAccessPointPreference(); 730 return false; 731 } 732 733 AccessPoint connectedAp = accessPoints.get(0); 734 if (!connectedAp.isActive()) { 735 removeConnectedAccessPointPreference(); 736 return false; 737 } 738 739 // Is the preference category empty? 740 if (mConnectedAccessPointPreferenceCategory.getPreferenceCount() == 0) { 741 addConnectedAccessPointPreference(connectedAp); 742 return true; 743 } 744 745 // Is the previous currently connected SSID different from the new one? 746 if (!((AccessPointPreference) 747 mConnectedAccessPointPreferenceCategory.getPreference(0)) 748 .getAccessPoint().getSsidStr().equals( 749 connectedAp.getSsidStr())) { 750 removeConnectedAccessPointPreference(); 751 addConnectedAccessPointPreference(connectedAp); 752 return true; 753 } 754 755 // Else same AP is connected, simply refresh the connected access point preference 756 // (first and only access point in this category). 757 ((LongPressAccessPointPreference) mConnectedAccessPointPreferenceCategory.getPreference(0)) 758 .refresh(); 759 return true; 760 } 761 762 /** 763 * Creates a Preference for the given {@link AccessPoint} and adds it to the 764 * {@link #mConnectedAccessPointPreferenceCategory}. 765 */ 766 private void addConnectedAccessPointPreference(AccessPoint connectedAp) { 767 String key = connectedAp.getBssid(); 768 LongPressAccessPointPreference pref = (LongPressAccessPointPreference) 769 getCachedPreference(key); 770 if (pref == null) { 771 pref = createLongPressActionPointPreference(connectedAp); 772 } 773 774 // Save the state of the current access point in the bundle so that we can restore it 775 // in the Wifi Network Details Fragment 776 pref.getAccessPoint().saveWifiState(pref.getExtras()); 777 pref.setFragment(WifiNetworkDetailsFragment.class.getName()); 778 779 pref.refresh(); 780 mConnectedAccessPointPreferenceCategory.addPreference(pref); 781 mConnectedAccessPointPreferenceCategory.setVisible(true); 782 } 783 784 /** Removes all preferences and hide the {@link #mConnectedAccessPointPreferenceCategory}. */ 785 private void removeConnectedAccessPointPreference() { 786 mConnectedAccessPointPreferenceCategory.removeAll(); 787 mConnectedAccessPointPreferenceCategory.setVisible(false); 788 } 789 790 private void setConfigureWifiSettingsVisibility() { 791 if (isUiRestricted()) { 792 mAdditionalSettingsPreferenceCategory.removeAll(); 793 return; 794 } 795 mAdditionalSettingsPreferenceCategory.addPreference(mConfigureWifiSettingsPreference); 796 if (mWifiTracker.doSavedNetworksExist()) { 797 mAdditionalSettingsPreferenceCategory.addPreference(mSavedNetworksPreference); 798 } else { 799 mAdditionalSettingsPreferenceCategory.removePreference(mSavedNetworksPreference); 800 } 801 } 802 803 private void setOffMessage() { 804 if (isUiRestricted()) { 805 removeConnectedAccessPointPreference(); 806 mAccessPointsPreferenceCategory.removeAll(); 807 if (!isUiRestrictedByOnlyAdmin()) { 808 addMessagePreference(R.string.wifi_empty_list_user_restricted); 809 } 810 return; 811 } 812 813 final CharSequence briefText = getText(R.string.wifi_empty_list_wifi_off); 814 815 // Don't use WifiManager.isScanAlwaysAvailable() to check the Wi-Fi scanning mode. Instead, 816 // read the system settings directly. Because when the device is in Airplane mode, even if 817 // Wi-Fi scanning mode is on, WifiManager.isScanAlwaysAvailable() still returns "off". 818 final ContentResolver resolver = getActivity().getContentResolver(); 819 final boolean wifiScanningMode = Settings.Global.getInt( 820 resolver, Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1; 821 822 if (!wifiScanningMode) { 823 // Show only the brief text if the user is not allowed to configure scanning settings, 824 // or the scanning mode has been turned off. 825 mStatusMessagePreference.setTitle(briefText); 826 } else { 827 LinkifyUtils.OnClickListener clickListener = new LinkifyUtils.OnClickListener() { 828 @Override 829 public void onClick() { 830 final SettingsActivity activity = (SettingsActivity) getActivity(); 831 activity.startPreferencePanel(WifiSettings.this, 832 ScanningSettings.class.getName(), 833 null, R.string.location_scanning_screen_title, null, null, 0); 834 } 835 }; 836 mStatusMessagePreference.setText( 837 briefText, getText(R.string.wifi_scan_notify_text), clickListener); 838 } 839 removeConnectedAccessPointPreference(); 840 mAccessPointsPreferenceCategory.removeAll(); 841 mAccessPointsPreferenceCategory.addPreference(mStatusMessagePreference); 842 } 843 844 private void addMessagePreference(int messageId) { 845 mStatusMessagePreference.setTitle(messageId); 846 removeConnectedAccessPointPreference(); 847 mAccessPointsPreferenceCategory.removeAll(); 848 mAccessPointsPreferenceCategory.addPreference(mStatusMessagePreference); 849 } 850 851 protected void setProgressBarVisible(boolean visible) { 852 if (mProgressHeader != null) { 853 mProgressHeader.setVisibility(visible ? View.VISIBLE : View.GONE); 854 } 855 } 856 857 @Override 858 public void onWifiStateChanged(int state) { 859 switch (state) { 860 case WifiManager.WIFI_STATE_ENABLING: 861 addMessagePreference(R.string.wifi_starting); 862 setProgressBarVisible(true); 863 break; 864 865 case WifiManager.WIFI_STATE_DISABLED: 866 setOffMessage(); 867 setProgressBarVisible(false); 868 break; 869 } 870 } 871 872 @Override 873 public void onConnectedChanged() { 874 onAccessPointsChanged(); 875 changeNextButtonState(mWifiTracker.isConnected()); 876 } 877 878 /** 879 * Renames/replaces "Next" button when appropriate. "Next" button usually exists in 880 * Wifi setup screens, not in usual wifi settings screen. 881 * 882 * @param enabled true when the device is connected to a wifi network. 883 */ 884 private void changeNextButtonState(boolean enabled) { 885 if (mEnableNextOnConnection && hasNextButton()) { 886 getNextButton().setEnabled(enabled); 887 } 888 } 889 890 @Override 891 public void onForget(WifiDialog dialog) { 892 forget(); 893 } 894 895 @Override 896 public void onSubmit(WifiDialog dialog) { 897 if (mDialog != null) { 898 submit(mDialog.getController()); 899 } 900 } 901 902 /* package */ void submit(WifiConfigController configController) { 903 904 final WifiConfiguration config = configController.getConfig(); 905 906 if (config == null) { 907 if (mSelectedAccessPoint != null 908 && mSelectedAccessPoint.isSaved()) { 909 connect(mSelectedAccessPoint.getConfig(), true /* isSavedNetwork */); 910 } 911 } else if (configController.getMode() == WifiConfigUiBase.MODE_MODIFY) { 912 mWifiManager.save(config, mSaveListener); 913 } else { 914 mWifiManager.save(config, mSaveListener); 915 if (mSelectedAccessPoint != null) { // Not an "Add network" 916 connect(config, false /* isSavedNetwork */); 917 } 918 } 919 920 mWifiTracker.resumeScanning(); 921 } 922 923 /* package */ void forget() { 924 mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_FORGET); 925 if (!mSelectedAccessPoint.isSaved()) { 926 if (mSelectedAccessPoint.getNetworkInfo() != null && 927 mSelectedAccessPoint.getNetworkInfo().getState() != State.DISCONNECTED) { 928 // Network is active but has no network ID - must be ephemeral. 929 mWifiManager.disableEphemeralNetwork( 930 AccessPoint.convertToQuotedString(mSelectedAccessPoint.getSsidStr())); 931 } else { 932 // Should not happen, but a monkey seems to trigger it 933 Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig()); 934 return; 935 } 936 } else if (mSelectedAccessPoint.getConfig().isPasspoint()) { 937 mWifiManager.removePasspointConfiguration(mSelectedAccessPoint.getConfig().FQDN); 938 } else { 939 mWifiManager.forget(mSelectedAccessPoint.getConfig().networkId, mForgetListener); 940 } 941 942 mWifiTracker.resumeScanning(); 943 944 // We need to rename/replace "Next" button in wifi setup context. 945 changeNextButtonState(false); 946 } 947 948 protected void connect(final WifiConfiguration config, boolean isSavedNetwork) { 949 // Log subtype if configuration is a saved network. 950 mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT, 951 isSavedNetwork); 952 mWifiManager.connect(config, mConnectListener); 953 } 954 955 protected void connect(final int networkId, boolean isSavedNetwork) { 956 // Log subtype if configuration is a saved network. 957 mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT, 958 isSavedNetwork); 959 mWifiManager.connect(networkId, mConnectListener); 960 } 961 962 /** 963 * Called when "add network" button is pressed. 964 */ 965 /* package */ void onAddNetworkPressed() { 966 mMetricsFeatureProvider.action(getActivity(), MetricsEvent.ACTION_WIFI_ADD_NETWORK); 967 // No exact access point is selected. 968 mSelectedAccessPoint = null; 969 showDialog(null, WifiConfigUiBase.MODE_CONNECT); 970 } 971 972 @Override 973 protected int getHelpResource() { 974 return R.string.help_url_wifi; 975 } 976 977 @Override 978 public void onAccessPointChanged(final AccessPoint accessPoint) { 979 View view = getView(); 980 if (view != null) { 981 view.post(new Runnable() { 982 @Override 983 public void run() { 984 Object tag = accessPoint.getTag(); 985 if (tag != null) { 986 ((LongPressAccessPointPreference) tag).refresh(); 987 } 988 } 989 }); 990 } 991 } 992 993 @Override 994 public void onLevelChanged(AccessPoint accessPoint) { 995 ((LongPressAccessPointPreference) accessPoint.getTag()).onLevelChanged(); 996 } 997 998 public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = 999 new BaseSearchIndexProvider() { 1000 @Override 1001 public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) { 1002 final List<SearchIndexableRaw> result = new ArrayList<>(); 1003 final Resources res = context.getResources(); 1004 1005 // Add fragment title 1006 SearchIndexableRaw data = new SearchIndexableRaw(context); 1007 data.title = res.getString(R.string.wifi_settings); 1008 data.screenTitle = res.getString(R.string.wifi_settings); 1009 data.keywords = res.getString(R.string.keywords_wifi); 1010 data.key = DATA_KEY_REFERENCE; 1011 result.add(data); 1012 1013 // Add saved Wi-Fi access points 1014 final List<AccessPoint> accessPoints = 1015 WifiTracker.getCurrentAccessPoints(context, true, false, false); 1016 for (AccessPoint accessPoint : accessPoints) { 1017 data = new SearchIndexableRaw(context); 1018 data.title = accessPoint.getSsidStr(); 1019 data.screenTitle = res.getString(R.string.wifi_settings); 1020 data.enabled = enabled; 1021 result.add(data); 1022 } 1023 1024 return result; 1025 } 1026 }; 1027 1028 /** 1029 * Returns true if the config is not editable through Settings. 1030 * @param context Context of caller 1031 * @param config The WiFi config. 1032 * @return true if the config is not editable through Settings. 1033 */ 1034 static boolean isEditabilityLockedDown(Context context, WifiConfiguration config) { 1035 return !canModifyNetwork(context, config); 1036 } 1037 1038 /** 1039 * This method is a stripped version of WifiConfigStore.canModifyNetwork. 1040 * TODO: refactor to have only one method. 1041 * @param context Context of caller 1042 * @param config The WiFi config. 1043 * @return true if Settings can modify the config. 1044 */ 1045 static boolean canModifyNetwork(Context context, WifiConfiguration config) { 1046 if (config == null) { 1047 return true; 1048 } 1049 1050 final DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService( 1051 Context.DEVICE_POLICY_SERVICE); 1052 1053 // Check if device has DPM capability. If it has and dpm is still null, then we 1054 // treat this case with suspicion and bail out. 1055 final PackageManager pm = context.getPackageManager(); 1056 if (pm.hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) && dpm == null) { 1057 return false; 1058 } 1059 1060 boolean isConfigEligibleForLockdown = false; 1061 if (dpm != null) { 1062 final ComponentName deviceOwner = dpm.getDeviceOwnerComponentOnAnyUser(); 1063 if (deviceOwner != null) { 1064 final int deviceOwnerUserId = dpm.getDeviceOwnerUserId(); 1065 try { 1066 final int deviceOwnerUid = pm.getPackageUidAsUser(deviceOwner.getPackageName(), 1067 deviceOwnerUserId); 1068 isConfigEligibleForLockdown = deviceOwnerUid == config.creatorUid; 1069 } catch (NameNotFoundException e) { 1070 // don't care 1071 } 1072 } 1073 } 1074 if (!isConfigEligibleForLockdown) { 1075 return true; 1076 } 1077 1078 final ContentResolver resolver = context.getContentResolver(); 1079 final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver, 1080 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0; 1081 return !isLockdownFeatureEnabled; 1082 } 1083 1084 private static class SummaryProvider 1085 implements SummaryLoader.SummaryProvider, OnSummaryChangeListener { 1086 1087 private final Context mContext; 1088 private final SummaryLoader mSummaryLoader; 1089 1090 @VisibleForTesting 1091 WifiSummaryUpdater mSummaryHelper; 1092 1093 public SummaryProvider(Context context, SummaryLoader summaryLoader) { 1094 mContext = context; 1095 mSummaryLoader = summaryLoader; 1096 mSummaryHelper = new WifiSummaryUpdater(mContext, this); 1097 } 1098 1099 1100 @Override 1101 public void setListening(boolean listening) { 1102 mSummaryHelper.register(listening); 1103 } 1104 1105 @Override 1106 public void onSummaryChanged(String summary) { 1107 mSummaryLoader.setSummary(this, summary); 1108 } 1109 } 1110 1111 public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY 1112 = new SummaryLoader.SummaryProviderFactory() { 1113 @Override 1114 public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity, 1115 SummaryLoader summaryLoader) { 1116 return new SummaryProvider(activity, summaryLoader); 1117 } 1118 }; 1119} 1120