WifiSettings.java revision ba1b520505508fd96cbf6cd287112d09365f8514
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.app.Activity; 20import android.app.Dialog; 21import android.app.admin.DevicePolicyManager; 22import android.content.BroadcastReceiver; 23import android.content.ComponentName; 24import android.content.ContentResolver; 25import android.content.Context; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageManager; 29import android.content.pm.PackageManager.NameNotFoundException; 30import android.content.res.Resources; 31import android.net.ConnectivityManager; 32import android.net.NetworkInfo; 33import android.net.NetworkInfo.State; 34import android.net.wifi.WifiConfiguration; 35import android.net.wifi.WifiManager; 36import android.net.wifi.WpsInfo; 37import android.nfc.NfcAdapter; 38import android.os.Bundle; 39import android.os.HandlerThread; 40import android.os.Process; 41import android.provider.Settings; 42import android.support.v7.preference.Preference; 43import android.support.v7.preference.PreferenceViewHolder; 44import android.text.Spannable; 45import android.text.TextUtils; 46import android.text.style.TextAppearanceSpan; 47import android.util.Log; 48import android.view.ContextMenu; 49import android.view.ContextMenu.ContextMenuInfo; 50import android.view.Menu; 51import android.view.MenuInflater; 52import android.view.MenuItem; 53import android.view.View; 54import android.widget.ProgressBar; 55import android.widget.TextView; 56import android.widget.TextView.BufferType; 57import android.widget.Toast; 58 59import com.android.internal.logging.MetricsLogger; 60import com.android.internal.logging.MetricsProto.MetricsEvent; 61import com.android.settings.LinkifyUtils; 62import com.android.settings.R; 63import com.android.settings.RestrictedSettingsFragment; 64import com.android.settings.SettingsActivity; 65import com.android.settings.dashboard.SummaryLoader; 66import com.android.settings.location.ScanningSettings; 67import com.android.settings.search.BaseSearchIndexProvider; 68import com.android.settings.search.Indexable; 69import com.android.settings.search.SearchIndexableRaw; 70import com.android.settingslib.RestrictedLockUtils; 71import com.android.settingslib.wifi.AccessPoint; 72import com.android.settingslib.wifi.AccessPoint.AccessPointListener; 73import com.android.settingslib.wifi.AccessPointPreference; 74import com.android.settingslib.wifi.WifiStatusTracker; 75import com.android.settingslib.wifi.WifiTracker; 76 77import java.util.ArrayList; 78import java.util.Collection; 79import java.util.List; 80 81import static android.os.UserManager.DISALLOW_CONFIG_WIFI; 82 83/** 84 * Two types of UI are provided here. 85 * 86 * The first is for "usual Settings", appearing as any other Setup fragment. 87 * 88 * The second is for Setup Wizard, with a simplified interface that hides the action bar 89 * and menus. 90 */ 91public class WifiSettings extends RestrictedSettingsFragment 92 implements Indexable, WifiTracker.WifiListener, AccessPointListener, 93 WifiDialog.WifiDialogListener { 94 95 private static final String TAG = "WifiSettings"; 96 97 /* package */ static final int MENU_ID_WPS_PBC = Menu.FIRST; 98 private static final int MENU_ID_WPS_PIN = Menu.FIRST + 1; 99 private static final int MENU_ID_ADVANCED = Menu.FIRST + 4; 100 private static final int MENU_ID_SCAN = Menu.FIRST + 5; 101 private static final int MENU_ID_CONNECT = Menu.FIRST + 6; 102 private static final int MENU_ID_FORGET = Menu.FIRST + 7; 103 private static final int MENU_ID_MODIFY = Menu.FIRST + 8; 104 private static final int MENU_ID_WRITE_NFC = Menu.FIRST + 9; 105 private static final int MENU_ID_CONFIGURE = Menu.FIRST + 10; 106 107 public static final int WIFI_DIALOG_ID = 1; 108 /* package */ static final int WPS_PBC_DIALOG_ID = 2; 109 private static final int WPS_PIN_DIALOG_ID = 3; 110 private static final int WRITE_NFC_DIALOG_ID = 6; 111 112 // Instance state keys 113 private static final String SAVE_DIALOG_MODE = "dialog_mode"; 114 private static final String SAVE_DIALOG_ACCESS_POINT_STATE = "wifi_ap_state"; 115 private static final String SAVED_WIFI_NFC_DIALOG_STATE = "wifi_nfc_dlg_state"; 116 117 private static final String PREF_KEY_EMPTY_WIFI_LIST = "wifi_empty_list"; 118 119 protected WifiManager mWifiManager; 120 private WifiManager.ActionListener mConnectListener; 121 private WifiManager.ActionListener mSaveListener; 122 private WifiManager.ActionListener mForgetListener; 123 124 private WifiEnabler mWifiEnabler; 125 // An access point being editted is stored here. 126 private AccessPoint mSelectedAccessPoint; 127 128 private WifiDialog mDialog; 129 private WriteWifiConfigToNfcDialog mWifiToNfcDialog; 130 131 private ProgressBar mProgressHeader; 132 133 // this boolean extra specifies whether to disable the Next button when not connected. Used by 134 // account creation outside of setup wizard. 135 private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect"; 136 // This string extra specifies a network to open the connect dialog on, so the user can enter 137 // network credentials. This is used by quick settings for secured networks. 138 private static final String EXTRA_START_CONNECT_SSID = "wifi_start_connect_ssid"; 139 140 // should Next button only be enabled when we have a connection? 141 private boolean mEnableNextOnConnection; 142 143 // Save the dialog details 144 private int mDialogMode; 145 private AccessPoint mDlgAccessPoint; 146 private Bundle mAccessPointSavedState; 147 private Bundle mWifiNfcDialogSavedState; 148 149 private WifiTracker mWifiTracker; 150 private String mOpenSsid; 151 152 private HandlerThread mBgThread; 153 154 private AccessPointPreference.UserBadgeCache mUserBadgeCache; 155 private Preference mAddPreference; 156 157 private MenuItem mScanMenuItem; 158 159 /* End of "used in Wifi Setup context" */ 160 161 public WifiSettings() { 162 super(DISALLOW_CONFIG_WIFI); 163 } 164 165 @Override 166 public void onViewCreated(View view, Bundle savedInstanceState) { 167 super.onViewCreated(view, savedInstanceState); 168 final Activity activity = getActivity(); 169 if (activity != null) { 170 mProgressHeader = (ProgressBar) setPinnedHeaderView(R.layout.wifi_progress_header); 171 setProgressBarVisible(false); 172 } 173 } 174 175 @Override 176 public void onCreate(Bundle icicle) { 177 super.onCreate(icicle); 178 addPreferencesFromResource(R.xml.wifi_settings); 179 mAddPreference = new Preference(getContext()); 180 mAddPreference.setIcon(R.drawable.ic_menu_add_inset); 181 mAddPreference.setTitle(R.string.wifi_add_network); 182 183 mUserBadgeCache = new AccessPointPreference.UserBadgeCache(getPackageManager()); 184 185 mBgThread = new HandlerThread(TAG, Process.THREAD_PRIORITY_BACKGROUND); 186 mBgThread.start(); 187 } 188 189 @Override 190 public void onDestroy() { 191 mBgThread.quit(); 192 super.onDestroy(); 193 } 194 195 @Override 196 public void onActivityCreated(Bundle savedInstanceState) { 197 super.onActivityCreated(savedInstanceState); 198 199 mWifiTracker = 200 new WifiTracker(getActivity(), this, mBgThread.getLooper(), true, true, false); 201 mWifiManager = mWifiTracker.getManager(); 202 203 mConnectListener = new WifiManager.ActionListener() { 204 @Override 205 public void onSuccess() { 206 } 207 @Override 208 public void onFailure(int reason) { 209 Activity activity = getActivity(); 210 if (activity != null) { 211 Toast.makeText(activity, 212 R.string.wifi_failed_connect_message, 213 Toast.LENGTH_SHORT).show(); 214 } 215 } 216 }; 217 218 mSaveListener = new WifiManager.ActionListener() { 219 @Override 220 public void onSuccess() { 221 } 222 @Override 223 public void onFailure(int reason) { 224 Activity activity = getActivity(); 225 if (activity != null) { 226 Toast.makeText(activity, 227 R.string.wifi_failed_save_message, 228 Toast.LENGTH_SHORT).show(); 229 } 230 } 231 }; 232 233 mForgetListener = new WifiManager.ActionListener() { 234 @Override 235 public void onSuccess() { 236 } 237 @Override 238 public void onFailure(int reason) { 239 Activity activity = getActivity(); 240 if (activity != null) { 241 Toast.makeText(activity, 242 R.string.wifi_failed_forget_message, 243 Toast.LENGTH_SHORT).show(); 244 } 245 } 246 }; 247 248 if (savedInstanceState != null) { 249 mDialogMode = savedInstanceState.getInt(SAVE_DIALOG_MODE); 250 if (savedInstanceState.containsKey(SAVE_DIALOG_ACCESS_POINT_STATE)) { 251 mAccessPointSavedState = 252 savedInstanceState.getBundle(SAVE_DIALOG_ACCESS_POINT_STATE); 253 } 254 255 if (savedInstanceState.containsKey(SAVED_WIFI_NFC_DIALOG_STATE)) { 256 mWifiNfcDialogSavedState = 257 savedInstanceState.getBundle(SAVED_WIFI_NFC_DIALOG_STATE); 258 } 259 } 260 261 // if we're supposed to enable/disable the Next button based on our current connection 262 // state, start it off in the right state 263 Intent intent = getActivity().getIntent(); 264 mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false); 265 266 if (mEnableNextOnConnection) { 267 if (hasNextButton()) { 268 final ConnectivityManager connectivity = (ConnectivityManager) 269 getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); 270 if (connectivity != null) { 271 NetworkInfo info = connectivity.getNetworkInfo( 272 ConnectivityManager.TYPE_WIFI); 273 changeNextButtonState(info.isConnected()); 274 } 275 } 276 } 277 278 registerForContextMenu(getListView()); 279 setHasOptionsMenu(true); 280 281 if (intent.hasExtra(EXTRA_START_CONNECT_SSID)) { 282 mOpenSsid = intent.getStringExtra(EXTRA_START_CONNECT_SSID); 283 onAccessPointsChanged(); 284 } 285 } 286 287 @Override 288 public void onDestroyView() { 289 super.onDestroyView(); 290 291 if (mWifiEnabler != null) { 292 mWifiEnabler.teardownSwitchBar(); 293 } 294 } 295 296 @Override 297 public void onStart() { 298 super.onStart(); 299 300 // On/off switch is hidden for Setup Wizard (returns null) 301 mWifiEnabler = createWifiEnabler(); 302 303 mWifiTracker.startTracking(); 304 } 305 306 /** 307 * @return new WifiEnabler or null (as overridden by WifiSettingsForSetupWizard) 308 */ 309 /* package */ WifiEnabler createWifiEnabler() { 310 final SettingsActivity activity = (SettingsActivity) getActivity(); 311 return new WifiEnabler(activity, activity.getSwitchBar()); 312 } 313 314 @Override 315 public void onResume() { 316 final Activity activity = getActivity(); 317 super.onResume(); 318 removePreference("dummy"); 319 if (mWifiEnabler != null) { 320 mWifiEnabler.resume(activity); 321 } 322 323 activity.invalidateOptionsMenu(); 324 } 325 326 @Override 327 public void onPause() { 328 super.onPause(); 329 if (mWifiEnabler != null) { 330 mWifiEnabler.pause(); 331 } 332 } 333 334 @Override 335 public void onStop() { 336 super.onStop(); 337 mWifiTracker.stopTracking(); 338 } 339 340 @Override 341 public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 342 // If the user is not allowed to configure wifi, do not show the menu. 343 if (isUiRestricted()) return; 344 345 addOptionsMenuItems(menu); 346 super.onCreateOptionsMenu(menu, inflater); 347 } 348 349 /** 350 * @param menu 351 */ 352 void addOptionsMenuItems(Menu menu) { 353 final boolean wifiIsEnabled = mWifiTracker.isWifiEnabled(); 354 mScanMenuItem = menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.menu_stats_refresh); 355 mScanMenuItem.setEnabled(wifiIsEnabled) 356 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 357 menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced) 358 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 359 menu.add(Menu.NONE, MENU_ID_CONFIGURE, 0, R.string.wifi_menu_configure) 360 .setIcon(R.drawable.ic_settings_24dp) 361 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 362 } 363 364 @Override 365 protected int getMetricsCategory() { 366 return MetricsEvent.WIFI; 367 } 368 369 @Override 370 public void onSaveInstanceState(Bundle outState) { 371 super.onSaveInstanceState(outState); 372 373 // If the dialog is showing, save its state. 374 if (mDialog != null && mDialog.isShowing()) { 375 outState.putInt(SAVE_DIALOG_MODE, mDialogMode); 376 if (mDlgAccessPoint != null) { 377 mAccessPointSavedState = new Bundle(); 378 mDlgAccessPoint.saveWifiState(mAccessPointSavedState); 379 outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState); 380 } 381 } 382 383 if (mWifiToNfcDialog != null && mWifiToNfcDialog.isShowing()) { 384 Bundle savedState = new Bundle(); 385 mWifiToNfcDialog.saveState(savedState); 386 outState.putBundle(SAVED_WIFI_NFC_DIALOG_STATE, savedState); 387 } 388 } 389 390 @Override 391 public boolean onOptionsItemSelected(MenuItem item) { 392 // If the user is not allowed to configure wifi, do not handle menu selections. 393 if (isUiRestricted()) return false; 394 395 switch (item.getItemId()) { 396 case MENU_ID_WPS_PBC: 397 showDialog(WPS_PBC_DIALOG_ID); 398 return true; 399 case MENU_ID_WPS_PIN: 400 showDialog(WPS_PIN_DIALOG_ID); 401 return true; 402 case MENU_ID_SCAN: 403 MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_FORCE_SCAN); 404 mWifiTracker.forceScan(); 405 return true; 406 case MENU_ID_ADVANCED: 407 if (getActivity() instanceof SettingsActivity) { 408 ((SettingsActivity) getActivity()).startPreferencePanel( 409 AdvancedWifiSettings.class.getCanonicalName(), null, 410 R.string.wifi_advanced_titlebar, null, this, 0); 411 } else { 412 startFragment(this, AdvancedWifiSettings.class.getCanonicalName(), 413 R.string.wifi_advanced_titlebar, -1 /* Do not request a results */, 414 null); 415 } 416 return true; 417 case MENU_ID_CONFIGURE: 418 if (getActivity() instanceof SettingsActivity) { 419 ((SettingsActivity) getActivity()).startPreferencePanel( 420 ConfigureWifiSettings.class.getCanonicalName(), null, 421 R.string.wifi_configure_titlebar, null, this, 0); 422 } else { 423 startFragment(this, ConfigureWifiSettings.class.getCanonicalName(), 424 R.string.wifi_configure_titlebar, -1 /* Do not request a results */, 425 null); 426 } 427 return true; 428 429 } 430 return super.onOptionsItemSelected(item); 431 } 432 433 @Override 434 public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) { 435 Preference preference = (Preference) view.getTag(); 436 437 if (preference instanceof LongPressAccessPointPreference) { 438 mSelectedAccessPoint = 439 ((LongPressAccessPointPreference) preference).getAccessPoint(); 440 menu.setHeaderTitle(mSelectedAccessPoint.getSsid()); 441 if (mSelectedAccessPoint.isConnectable()) { 442 menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect); 443 } 444 445 WifiConfiguration config = mSelectedAccessPoint.getConfig(); 446 // Some configs are ineditable 447 if (isEditabilityLockedDown(getActivity(), config)) { 448 return; 449 } 450 451 if (mSelectedAccessPoint.isSaved() || mSelectedAccessPoint.isEphemeral()) { 452 // Allow forgetting a network if either the network is saved or ephemerally 453 // connected. (In the latter case, "forget" blacklists the network so it won't 454 // be used again, ephemerally). 455 menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget); 456 } 457 if (mSelectedAccessPoint.isSaved()) { 458 menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify); 459 NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(getActivity()); 460 if (nfcAdapter != null && nfcAdapter.isEnabled() && 461 mSelectedAccessPoint.getSecurity() != AccessPoint.SECURITY_NONE) { 462 // Only allow writing of NFC tags for password-protected networks. 463 menu.add(Menu.NONE, MENU_ID_WRITE_NFC, 0, R.string.wifi_menu_write_to_nfc); 464 } 465 } 466 } 467 } 468 469 @Override 470 public boolean onContextItemSelected(MenuItem item) { 471 if (mSelectedAccessPoint == null) { 472 return super.onContextItemSelected(item); 473 } 474 switch (item.getItemId()) { 475 case MENU_ID_CONNECT: { 476 boolean isSavedNetwork = mSelectedAccessPoint.isSaved(); 477 if (isSavedNetwork) { 478 connect(mSelectedAccessPoint.getConfig(), isSavedNetwork); 479 } else if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE) { 480 /** Bypass dialog for unsecured networks */ 481 mSelectedAccessPoint.generateOpenNetworkConfig(); 482 connect(mSelectedAccessPoint.getConfig(), isSavedNetwork); 483 } else { 484 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT); 485 } 486 return true; 487 } 488 case MENU_ID_FORGET: { 489 forget(); 490 return true; 491 } 492 case MENU_ID_MODIFY: { 493 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_MODIFY); 494 return true; 495 } 496 case MENU_ID_WRITE_NFC: 497 showDialog(WRITE_NFC_DIALOG_ID); 498 return true; 499 500 } 501 return super.onContextItemSelected(item); 502 } 503 504 @Override 505 public boolean onPreferenceTreeClick(Preference preference) { 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 { 524 return super.onPreferenceTreeClick(preference); 525 } 526 return true; 527 } 528 529 private void showDialog(AccessPoint accessPoint, int dialogMode) { 530 if (accessPoint != null) { 531 WifiConfiguration config = accessPoint.getConfig(); 532 if (isEditabilityLockedDown(getActivity(), config) && accessPoint.isActive()) { 533 RestrictedLockUtils.sendShowAdminSupportDetailsIntent(getActivity(), 534 RestrictedLockUtils.getDeviceOwner(getActivity())); 535 return; 536 } 537 } 538 539 if (mDialog != null) { 540 removeDialog(WIFI_DIALOG_ID); 541 mDialog = null; 542 } 543 544 // Save the access point and edit mode 545 mDlgAccessPoint = accessPoint; 546 mDialogMode = dialogMode; 547 548 showDialog(WIFI_DIALOG_ID); 549 } 550 551 @Override 552 public Dialog onCreateDialog(int dialogId) { 553 switch (dialogId) { 554 case WIFI_DIALOG_ID: 555 AccessPoint ap = mDlgAccessPoint; // For manual launch 556 if (ap == null) { // For re-launch from saved state 557 if (mAccessPointSavedState != null) { 558 ap = new AccessPoint(getActivity(), mAccessPointSavedState); 559 // For repeated orientation changes 560 mDlgAccessPoint = ap; 561 // Reset the saved access point data 562 mAccessPointSavedState = null; 563 } 564 } 565 // If it's null, fine, it's for Add Network 566 mSelectedAccessPoint = ap; 567 mDialog = new WifiDialog(getActivity(), this, ap, mDialogMode, 568 /* no hide submit/connect */ false); 569 return mDialog; 570 case WPS_PBC_DIALOG_ID: 571 return new WpsDialog(getActivity(), WpsInfo.PBC); 572 case WPS_PIN_DIALOG_ID: 573 return new WpsDialog(getActivity(), WpsInfo.DISPLAY); 574 case WRITE_NFC_DIALOG_ID: 575 if (mSelectedAccessPoint != null) { 576 mWifiToNfcDialog = new WriteWifiConfigToNfcDialog( 577 getActivity(), mSelectedAccessPoint.getConfig().networkId, 578 mSelectedAccessPoint.getSecurity(), 579 mWifiManager); 580 } else if (mWifiNfcDialogSavedState != null) { 581 mWifiToNfcDialog = new WriteWifiConfigToNfcDialog( 582 getActivity(), mWifiNfcDialogSavedState, mWifiManager); 583 } 584 585 return mWifiToNfcDialog; 586 } 587 return super.onCreateDialog(dialogId); 588 } 589 590 /** 591 * Shows the latest access points available with supplemental information like 592 * the strength of network and the security for it. 593 */ 594 @Override 595 public void onAccessPointsChanged() { 596 // Safeguard from some delayed event handling 597 if (getActivity() == null) return; 598 final int wifiState = mWifiManager.getWifiState(); 599 if (isUiRestricted()) { 600 if (!isUiRestrictedByOnlyAdmin()) { 601 if (WifiManager.WIFI_STATE_DISABLED == wifiState) { 602 addMessagePreference(R.string.wifi_empty_list_wifi_off); 603 } 604 else { 605 addMessagePreference(R.string.wifi_empty_list_user_restricted); 606 } 607 } 608 getPreferenceScreen().removeAll(); 609 return; 610 } 611 612 switch (wifiState) { 613 case WifiManager.WIFI_STATE_ENABLED: 614 // AccessPoints are automatically sorted with TreeSet. 615 final Collection<AccessPoint> accessPoints = 616 mWifiTracker.getAccessPoints(); 617 618 boolean hasAvailableAccessPoints = false; 619 int index = 0; 620 cacheRemoveAllPrefs(getPreferenceScreen()); 621 for (AccessPoint accessPoint : accessPoints) { 622 // Ignore access points that are out of range. 623 if (accessPoint.getLevel() != -1) { 624 String key = accessPoint.getBssid(); 625 if (TextUtils.isEmpty(key)) { 626 key = accessPoint.getSsidStr(); 627 } 628 hasAvailableAccessPoints = true; 629 LongPressAccessPointPreference pref = (LongPressAccessPointPreference) 630 getCachedPreference(key); 631 if (pref != null) { 632 pref.setOrder(index++); 633 continue; 634 } 635 LongPressAccessPointPreference 636 preference = new LongPressAccessPointPreference(accessPoint, 637 getPrefContext(), mUserBadgeCache, false, 638 R.drawable.ic_wifi_signal_0, this); 639 preference.setKey(key); 640 preference.setOrder(index++); 641 if (mOpenSsid != null && mOpenSsid.equals(accessPoint.getSsidStr()) 642 && !accessPoint.isSaved() 643 && accessPoint.getSecurity() != AccessPoint.SECURITY_NONE) { 644 onPreferenceTreeClick(preference); 645 mOpenSsid = null; 646 } 647 getPreferenceScreen().addPreference(preference); 648 accessPoint.setListener(this); 649 preference.refresh(); 650 } 651 } 652 removeCachedPrefs(getPreferenceScreen()); 653 if (!hasAvailableAccessPoints) { 654 setProgressBarVisible(true); 655 Preference pref = new Preference(getContext()) { 656 @Override 657 public void onBindViewHolder(PreferenceViewHolder holder) { 658 super.onBindViewHolder(holder); 659 // Show a line on each side of add network. 660 holder.setDividerAllowedBelow(true); 661 } 662 }; 663 pref.setSelectable(false); 664 pref.setSummary(R.string.wifi_empty_list_wifi_on); 665 pref.setOrder(0); 666 pref.setKey(PREF_KEY_EMPTY_WIFI_LIST); 667 getPreferenceScreen().addPreference(pref); 668 mAddPreference.setOrder(1); 669 getPreferenceScreen().addPreference(mAddPreference); 670 } else { 671 mAddPreference.setOrder(index++); 672 getPreferenceScreen().addPreference(mAddPreference); 673 setProgressBarVisible(false); 674 } 675 if (mScanMenuItem != null) { 676 mScanMenuItem.setEnabled(true); 677 } 678 break; 679 680 case WifiManager.WIFI_STATE_ENABLING: 681 getPreferenceScreen().removeAll(); 682 setProgressBarVisible(true); 683 break; 684 685 case WifiManager.WIFI_STATE_DISABLING: 686 addMessagePreference(R.string.wifi_stopping); 687 setProgressBarVisible(true); 688 break; 689 690 case WifiManager.WIFI_STATE_DISABLED: 691 setOffMessage(); 692 setProgressBarVisible(false); 693 if (mScanMenuItem != null) { 694 mScanMenuItem.setEnabled(false); 695 } 696 break; 697 } 698 } 699 700 private void setOffMessage() { 701 if (isUiRestricted()) { 702 if (!isUiRestrictedByOnlyAdmin()) { 703 addMessagePreference(R.string.wifi_empty_list_wifi_off); 704 } 705 getPreferenceScreen().removeAll(); 706 return; 707 } 708 709 TextView emptyTextView = getEmptyTextView(); 710 if (emptyTextView == null) { 711 return; 712 } 713 714 final CharSequence briefText = getText(R.string.wifi_empty_list_wifi_off); 715 716 // Don't use WifiManager.isScanAlwaysAvailable() to check the Wi-Fi scanning mode. Instead, 717 // read the system settings directly. Because when the device is in Airplane mode, even if 718 // Wi-Fi scanning mode is on, WifiManager.isScanAlwaysAvailable() still returns "off". 719 final ContentResolver resolver = getActivity().getContentResolver(); 720 final boolean wifiScanningMode = Settings.Global.getInt( 721 resolver, Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1; 722 723 if (!wifiScanningMode) { 724 // Show only the brief text if the user is not allowed to configure scanning settings, 725 // or the scanning mode has been turned off. 726 emptyTextView.setText(briefText, BufferType.SPANNABLE); 727 } else { 728 // Append the description of scanning settings with link. 729 final StringBuilder contentBuilder = new StringBuilder(); 730 contentBuilder.append(briefText); 731 contentBuilder.append("\n\n"); 732 contentBuilder.append(getText(R.string.wifi_scan_notify_text)); 733 LinkifyUtils.linkify(emptyTextView, contentBuilder, new LinkifyUtils.OnClickListener() { 734 @Override 735 public void onClick() { 736 final SettingsActivity activity = 737 (SettingsActivity) WifiSettings.this.getActivity(); 738 activity.startPreferencePanel(ScanningSettings.class.getName(), null, 739 R.string.location_scanning_screen_title, null, null, 0); 740 } 741 }); 742 } 743 // Embolden and enlarge the brief description anyway. 744 Spannable boldSpan = (Spannable) emptyTextView.getText(); 745 boldSpan.setSpan( 746 new TextAppearanceSpan(getActivity(), android.R.style.TextAppearance_Medium), 0, 747 briefText.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 748 getPreferenceScreen().removeAll(); 749 } 750 751 private void addMessagePreference(int messageId) { 752 TextView emptyTextView = getEmptyTextView(); 753 if (emptyTextView != null) emptyTextView.setText(messageId); 754 getPreferenceScreen().removeAll(); 755 } 756 757 protected void setProgressBarVisible(boolean visible) { 758 if (mProgressHeader != null) { 759 mProgressHeader.setVisibility(visible && !isUiRestricted() ? View.VISIBLE : View.GONE); 760 } 761 } 762 763 @Override 764 public void onWifiStateChanged(int state) { 765 switch (state) { 766 case WifiManager.WIFI_STATE_ENABLING: 767 addMessagePreference(R.string.wifi_starting); 768 setProgressBarVisible(true); 769 break; 770 771 case WifiManager.WIFI_STATE_DISABLED: 772 setOffMessage(); 773 setProgressBarVisible(false); 774 break; 775 } 776 } 777 778 @Override 779 public void onConnectedChanged() { 780 changeNextButtonState(mWifiTracker.isConnected()); 781 } 782 783 /** 784 * Renames/replaces "Next" button when appropriate. "Next" button usually exists in 785 * Wifi setup screens, not in usual wifi settings screen. 786 * 787 * @param enabled true when the device is connected to a wifi network. 788 */ 789 private void changeNextButtonState(boolean enabled) { 790 if (mEnableNextOnConnection && hasNextButton()) { 791 getNextButton().setEnabled(enabled); 792 } 793 } 794 795 @Override 796 public void onForget(WifiDialog dialog) { 797 forget(); 798 } 799 800 @Override 801 public void onSubmit(WifiDialog dialog) { 802 if (mDialog != null) { 803 submit(mDialog.getController()); 804 } 805 } 806 807 /* package */ void submit(WifiConfigController configController) { 808 809 final WifiConfiguration config = configController.getConfig(); 810 811 if (config == null) { 812 if (mSelectedAccessPoint != null 813 && mSelectedAccessPoint.isSaved()) { 814 connect(mSelectedAccessPoint.getConfig(), true /* isSavedNetwork */); 815 } 816 } else if (configController.getMode() == WifiConfigUiBase.MODE_MODIFY) { 817 mWifiManager.save(config, mSaveListener); 818 } else { 819 mWifiManager.save(config, mSaveListener); 820 if (mSelectedAccessPoint != null) { // Not an "Add network" 821 connect(config, false /* isSavedNetwork */); 822 } 823 } 824 825 mWifiTracker.resumeScanning(); 826 } 827 828 /* package */ void forget() { 829 MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_FORGET); 830 if (!mSelectedAccessPoint.isSaved()) { 831 if (mSelectedAccessPoint.getNetworkInfo() != null && 832 mSelectedAccessPoint.getNetworkInfo().getState() != State.DISCONNECTED) { 833 // Network is active but has no network ID - must be ephemeral. 834 mWifiManager.disableEphemeralNetwork( 835 AccessPoint.convertToQuotedString(mSelectedAccessPoint.getSsidStr())); 836 } else { 837 // Should not happen, but a monkey seems to trigger it 838 Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig()); 839 return; 840 } 841 } else if (mSelectedAccessPoint.getConfig().isPasspoint()) { 842 mWifiManager.removePasspointConfiguration(mSelectedAccessPoint.getConfig().FQDN); 843 } else { 844 mWifiManager.forget(mSelectedAccessPoint.getConfig().networkId, mForgetListener); 845 } 846 847 mWifiTracker.resumeScanning(); 848 849 // We need to rename/replace "Next" button in wifi setup context. 850 changeNextButtonState(false); 851 } 852 853 protected void connect(final WifiConfiguration config, boolean isSavedNetwork) { 854 // Log subtype if configuration is a saved network. 855 MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT, 856 isSavedNetwork); 857 mWifiManager.connect(config, mConnectListener); 858 } 859 860 protected void connect(final int networkId, boolean isSavedNetwork) { 861 // Log subtype if configuration is a saved network. 862 MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT, 863 isSavedNetwork); 864 mWifiManager.connect(networkId, mConnectListener); 865 } 866 867 /** 868 * Called when "add network" button is pressed. 869 */ 870 /* package */ void onAddNetworkPressed() { 871 MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_ADD_NETWORK); 872 // No exact access point is selected. 873 mSelectedAccessPoint = null; 874 showDialog(null, WifiConfigUiBase.MODE_CONNECT); 875 } 876 877 @Override 878 protected int getHelpResource() { 879 return R.string.help_url_wifi; 880 } 881 882 @Override 883 public void onAccessPointChanged(final AccessPoint accessPoint) { 884 View view = getView(); 885 if (view != null) { 886 view.post(new Runnable() { 887 @Override 888 public void run() { 889 Object tag = accessPoint.getTag(); 890 if (tag != null) { 891 ((LongPressAccessPointPreference) tag).refresh(); 892 } 893 } 894 }); 895 } 896 } 897 898 @Override 899 public void onLevelChanged(AccessPoint accessPoint) { 900 ((LongPressAccessPointPreference) accessPoint.getTag()).onLevelChanged(); 901 } 902 903 public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = 904 new BaseSearchIndexProvider() { 905 @Override 906 public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) { 907 final List<SearchIndexableRaw> result = new ArrayList<>(); 908 final Resources res = context.getResources(); 909 910 // Add fragment title 911 SearchIndexableRaw data = new SearchIndexableRaw(context); 912 data.title = res.getString(R.string.wifi_settings); 913 data.screenTitle = res.getString(R.string.wifi_settings); 914 data.keywords = res.getString(R.string.keywords_wifi); 915 result.add(data); 916 917 // Add saved Wi-Fi access points 918 final Collection<AccessPoint> accessPoints = 919 WifiTracker.getCurrentAccessPoints(context, true, false, false); 920 for (AccessPoint accessPoint : accessPoints) { 921 data = new SearchIndexableRaw(context); 922 data.title = accessPoint.getSsidStr(); 923 data.screenTitle = res.getString(R.string.wifi_settings); 924 data.enabled = enabled; 925 result.add(data); 926 } 927 928 return result; 929 } 930 }; 931 932 /** 933 * Returns true if the config is not editable through Settings. 934 * @param context Context of caller 935 * @param config The WiFi config. 936 * @return true if the config is not editable through Settings. 937 */ 938 static boolean isEditabilityLockedDown(Context context, WifiConfiguration config) { 939 return !canModifyNetwork(context, config); 940 } 941 942 /** 943 * This method is a stripped version of WifiConfigStore.canModifyNetwork. 944 * TODO: refactor to have only one method. 945 * @param context Context of caller 946 * @param config The WiFi config. 947 * @return true if Settings can modify the config. 948 */ 949 static boolean canModifyNetwork(Context context, WifiConfiguration config) { 950 if (config == null) { 951 return true; 952 } 953 954 final DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService( 955 Context.DEVICE_POLICY_SERVICE); 956 957 // Check if device has DPM capability. If it has and dpm is still null, then we 958 // treat this case with suspicion and bail out. 959 final PackageManager pm = context.getPackageManager(); 960 if (pm.hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) && dpm == null) { 961 return false; 962 } 963 964 boolean isConfigEligibleForLockdown = false; 965 if (dpm != null) { 966 final ComponentName deviceOwner = dpm.getDeviceOwnerComponentOnAnyUser(); 967 if (deviceOwner != null) { 968 final int deviceOwnerUserId = dpm.getDeviceOwnerUserId(); 969 try { 970 final int deviceOwnerUid = pm.getPackageUidAsUser(deviceOwner.getPackageName(), 971 deviceOwnerUserId); 972 isConfigEligibleForLockdown = deviceOwnerUid == config.creatorUid; 973 } catch (NameNotFoundException e) { 974 // don't care 975 } 976 } 977 } 978 if (!isConfigEligibleForLockdown) { 979 return true; 980 } 981 982 final ContentResolver resolver = context.getContentResolver(); 983 final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver, 984 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0; 985 return !isLockdownFeatureEnabled; 986 } 987 988 private static class SummaryProvider extends BroadcastReceiver 989 implements SummaryLoader.SummaryProvider { 990 991 private final Context mContext; 992 private final WifiManager mWifiManager; 993 private final WifiStatusTracker mWifiTracker; 994 private final SummaryLoader mSummaryLoader; 995 996 public SummaryProvider(Context context, SummaryLoader summaryLoader) { 997 mContext = context; 998 mSummaryLoader = summaryLoader; 999 mWifiManager = context.getSystemService(WifiManager.class); 1000 mWifiTracker = new WifiStatusTracker(mWifiManager); 1001 } 1002 1003 private CharSequence getSummary() { 1004 if (!mWifiTracker.enabled) { 1005 return mContext.getString(R.string.wifi_disabled_generic); 1006 } 1007 if (!mWifiTracker.connected) { 1008 return mContext.getString(R.string.disconnected); 1009 } 1010 return mWifiTracker.ssid; 1011 } 1012 1013 @Override 1014 public void setListening(boolean listening) { 1015 if (listening) { 1016 IntentFilter filter = new IntentFilter(); 1017 filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION); 1018 filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); 1019 filter.addAction(WifiManager.RSSI_CHANGED_ACTION); 1020 mSummaryLoader.registerReceiver(this, filter); 1021 } 1022 } 1023 1024 @Override 1025 public void onReceive(Context context, Intent intent) { 1026 mWifiTracker.handleBroadcast(intent); 1027 mSummaryLoader.setSummary(this, getSummary()); 1028 } 1029 } 1030 1031 public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY 1032 = new SummaryLoader.SummaryProviderFactory() { 1033 @Override 1034 public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity, 1035 SummaryLoader summaryLoader) { 1036 return new SummaryProvider(activity, summaryLoader); 1037 } 1038 }; 1039} 1040