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 android.app.Activity; 20 import android.app.Dialog; 21 import android.app.admin.DevicePolicyManager; 22 import android.content.BroadcastReceiver; 23 import android.content.ComponentName; 24 import android.content.ContentResolver; 25 import android.content.Context; 26 import android.content.Intent; 27 import android.content.IntentFilter; 28 import android.content.pm.PackageManager; 29 import android.content.pm.PackageManager.NameNotFoundException; 30 import android.content.res.Resources; 31 import android.net.ConnectivityManager; 32 import android.net.NetworkInfo; 33 import android.net.NetworkInfo.State; 34 import android.net.wifi.WifiConfiguration; 35 import android.net.wifi.WifiManager; 36 import android.net.wifi.WpsInfo; 37 import android.nfc.NfcAdapter; 38 import android.os.Bundle; 39 import android.os.HandlerThread; 40 import android.os.Process; 41 import android.provider.Settings; 42 import android.support.v7.preference.Preference; 43 import android.support.v7.preference.PreferenceViewHolder; 44 import android.text.Spannable; 45 import android.text.TextUtils; 46 import android.text.style.TextAppearanceSpan; 47 import android.util.Log; 48 import android.view.ContextMenu; 49 import android.view.ContextMenu.ContextMenuInfo; 50 import android.view.Menu; 51 import android.view.MenuInflater; 52 import android.view.MenuItem; 53 import android.view.View; 54 import android.widget.ProgressBar; 55 import android.widget.TextView; 56 import android.widget.TextView.BufferType; 57 import android.widget.Toast; 58 59 import com.android.internal.logging.MetricsLogger; 60 import com.android.internal.logging.MetricsProto.MetricsEvent; 61 import com.android.settings.LinkifyUtils; 62 import com.android.settings.R; 63 import com.android.settings.RestrictedSettingsFragment; 64 import com.android.settings.SettingsActivity; 65 import com.android.settings.dashboard.SummaryLoader; 66 import com.android.settings.location.ScanningSettings; 67 import com.android.settings.search.BaseSearchIndexProvider; 68 import com.android.settings.search.Indexable; 69 import com.android.settings.search.SearchIndexableRaw; 70 import com.android.settingslib.RestrictedLockUtils; 71 import com.android.settingslib.wifi.AccessPoint; 72 import com.android.settingslib.wifi.AccessPoint.AccessPointListener; 73 import com.android.settingslib.wifi.AccessPointPreference; 74 import com.android.settingslib.wifi.WifiStatusTracker; 75 import com.android.settingslib.wifi.WifiTracker; 76 77 import java.util.ArrayList; 78 import java.util.Collection; 79 import java.util.List; 80 81 import 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 */ 91 public 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 } 172 } 173 174 @Override 175 public void onCreate(Bundle icicle) { 176 super.onCreate(icicle); 177 addPreferencesFromResource(R.xml.wifi_settings); 178 mAddPreference = new Preference(getContext()); 179 mAddPreference.setIcon(R.drawable.ic_menu_add_inset); 180 mAddPreference.setTitle(R.string.wifi_add_network); 181 182 mUserBadgeCache = new AccessPointPreference.UserBadgeCache(getPackageManager()); 183 184 mBgThread = new HandlerThread(TAG, Process.THREAD_PRIORITY_BACKGROUND); 185 mBgThread.start(); 186 } 187 188 @Override 189 public void onDestroy() { 190 mBgThread.quit(); 191 super.onDestroy(); 192 } 193 194 @Override 195 public void onActivityCreated(Bundle savedInstanceState) { 196 super.onActivityCreated(savedInstanceState); 197 198 mWifiTracker = 199 new WifiTracker(getActivity(), this, mBgThread.getLooper(), true, true, false); 200 mWifiManager = mWifiTracker.getManager(); 201 202 mConnectListener = new WifiManager.ActionListener() { 203 @Override 204 public void onSuccess() { 205 } 206 @Override 207 public void onFailure(int reason) { 208 Activity activity = getActivity(); 209 if (activity != null) { 210 Toast.makeText(activity, 211 R.string.wifi_failed_connect_message, 212 Toast.LENGTH_SHORT).show(); 213 } 214 } 215 }; 216 217 mSaveListener = new WifiManager.ActionListener() { 218 @Override 219 public void onSuccess() { 220 } 221 @Override 222 public void onFailure(int reason) { 223 Activity activity = getActivity(); 224 if (activity != null) { 225 Toast.makeText(activity, 226 R.string.wifi_failed_save_message, 227 Toast.LENGTH_SHORT).show(); 228 } 229 } 230 }; 231 232 mForgetListener = new WifiManager.ActionListener() { 233 @Override 234 public void onSuccess() { 235 } 236 @Override 237 public void onFailure(int reason) { 238 Activity activity = getActivity(); 239 if (activity != null) { 240 Toast.makeText(activity, 241 R.string.wifi_failed_forget_message, 242 Toast.LENGTH_SHORT).show(); 243 } 244 } 245 }; 246 247 if (savedInstanceState != null) { 248 mDialogMode = savedInstanceState.getInt(SAVE_DIALOG_MODE); 249 if (savedInstanceState.containsKey(SAVE_DIALOG_ACCESS_POINT_STATE)) { 250 mAccessPointSavedState = 251 savedInstanceState.getBundle(SAVE_DIALOG_ACCESS_POINT_STATE); 252 } 253 254 if (savedInstanceState.containsKey(SAVED_WIFI_NFC_DIALOG_STATE)) { 255 mWifiNfcDialogSavedState = 256 savedInstanceState.getBundle(SAVED_WIFI_NFC_DIALOG_STATE); 257 } 258 } 259 260 // if we're supposed to enable/disable the Next button based on our current connection 261 // state, start it off in the right state 262 Intent intent = getActivity().getIntent(); 263 mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false); 264 265 if (mEnableNextOnConnection) { 266 if (hasNextButton()) { 267 final ConnectivityManager connectivity = (ConnectivityManager) 268 getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); 269 if (connectivity != null) { 270 NetworkInfo info = connectivity.getNetworkInfo( 271 ConnectivityManager.TYPE_WIFI); 272 changeNextButtonState(info.isConnected()); 273 } 274 } 275 } 276 277 registerForContextMenu(getListView()); 278 setHasOptionsMenu(true); 279 280 if (intent.hasExtra(EXTRA_START_CONNECT_SSID)) { 281 mOpenSsid = intent.getStringExtra(EXTRA_START_CONNECT_SSID); 282 onAccessPointsChanged(); 283 } 284 } 285 286 @Override 287 public void onDestroyView() { 288 super.onDestroyView(); 289 290 if (mWifiEnabler != null) { 291 mWifiEnabler.teardownSwitchBar(); 292 } 293 } 294 295 @Override 296 public void onStart() { 297 super.onStart(); 298 299 // On/off switch is hidden for Setup Wizard (returns null) 300 mWifiEnabler = createWifiEnabler(); 301 } 302 303 /** 304 * @return new WifiEnabler or null (as overridden by WifiSettingsForSetupWizard) 305 */ 306 /* package */ WifiEnabler createWifiEnabler() { 307 final SettingsActivity activity = (SettingsActivity) getActivity(); 308 return new WifiEnabler(activity, activity.getSwitchBar()); 309 } 310 311 @Override 312 public void onResume() { 313 final Activity activity = getActivity(); 314 super.onResume(); 315 removePreference("dummy"); 316 if (mWifiEnabler != null) { 317 mWifiEnabler.resume(activity); 318 } 319 320 mWifiTracker.startTracking(); 321 activity.invalidateOptionsMenu(); 322 } 323 324 @Override 325 public void onPause() { 326 super.onPause(); 327 if (mWifiEnabler != null) { 328 mWifiEnabler.pause(); 329 } 330 331 mWifiTracker.stopTracking(); 332 } 333 334 @Override 335 public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 336 // If the user is not allowed to configure wifi, do not show the menu. 337 if (isUiRestricted()) return; 338 339 addOptionsMenuItems(menu); 340 super.onCreateOptionsMenu(menu, inflater); 341 } 342 343 /** 344 * @param menu 345 */ 346 void addOptionsMenuItems(Menu menu) { 347 final boolean wifiIsEnabled = mWifiTracker.isWifiEnabled(); 348 mScanMenuItem = menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.menu_stats_refresh); 349 mScanMenuItem.setEnabled(wifiIsEnabled) 350 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 351 menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced) 352 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 353 menu.add(Menu.NONE, MENU_ID_CONFIGURE, 0, R.string.wifi_menu_configure) 354 .setIcon(R.drawable.ic_settings_24dp) 355 .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM); 356 } 357 358 @Override 359 protected int getMetricsCategory() { 360 return MetricsEvent.WIFI; 361 } 362 363 @Override 364 public void onSaveInstanceState(Bundle outState) { 365 super.onSaveInstanceState(outState); 366 367 // If the dialog is showing, save its state. 368 if (mDialog != null && mDialog.isShowing()) { 369 outState.putInt(SAVE_DIALOG_MODE, mDialogMode); 370 if (mDlgAccessPoint != null) { 371 mAccessPointSavedState = new Bundle(); 372 mDlgAccessPoint.saveWifiState(mAccessPointSavedState); 373 outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState); 374 } 375 } 376 377 if (mWifiToNfcDialog != null && mWifiToNfcDialog.isShowing()) { 378 Bundle savedState = new Bundle(); 379 mWifiToNfcDialog.saveState(savedState); 380 outState.putBundle(SAVED_WIFI_NFC_DIALOG_STATE, savedState); 381 } 382 } 383 384 @Override 385 public boolean onOptionsItemSelected(MenuItem item) { 386 // If the user is not allowed to configure wifi, do not handle menu selections. 387 if (isUiRestricted()) return false; 388 389 switch (item.getItemId()) { 390 case MENU_ID_WPS_PBC: 391 showDialog(WPS_PBC_DIALOG_ID); 392 return true; 393 /* 394 case MENU_ID_P2P: 395 if (getActivity() instanceof SettingsActivity) { 396 ((SettingsActivity) getActivity()).startPreferencePanel( 397 WifiP2pSettings.class.getCanonicalName(), 398 null, 399 R.string.wifi_p2p_settings_title, null, 400 this, 0); 401 } else { 402 startFragment(this, WifiP2pSettings.class.getCanonicalName(), 403 R.string.wifi_p2p_settings_title, -1, null); 404 } 405 return true; 406 */ 407 case MENU_ID_WPS_PIN: 408 showDialog(WPS_PIN_DIALOG_ID); 409 return true; 410 case MENU_ID_SCAN: 411 MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_FORCE_SCAN); 412 mWifiTracker.forceScan(); 413 return true; 414 case MENU_ID_ADVANCED: 415 if (getActivity() instanceof SettingsActivity) { 416 ((SettingsActivity) getActivity()).startPreferencePanel( 417 AdvancedWifiSettings.class.getCanonicalName(), null, 418 R.string.wifi_advanced_titlebar, null, this, 0); 419 } else { 420 startFragment(this, AdvancedWifiSettings.class.getCanonicalName(), 421 R.string.wifi_advanced_titlebar, -1 /* Do not request a results */, 422 null); 423 } 424 return true; 425 case MENU_ID_CONFIGURE: 426 if (getActivity() instanceof SettingsActivity) { 427 ((SettingsActivity) getActivity()).startPreferencePanel( 428 ConfigureWifiSettings.class.getCanonicalName(), null, 429 R.string.wifi_configure_titlebar, null, this, 0); 430 } else { 431 startFragment(this, ConfigureWifiSettings.class.getCanonicalName(), 432 R.string.wifi_configure_titlebar, -1 /* Do not request a results */, 433 null); 434 } 435 return true; 436 437 } 438 return super.onOptionsItemSelected(item); 439 } 440 441 @Override 442 public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) { 443 Preference preference = (Preference) view.getTag(); 444 445 if (preference instanceof LongPressAccessPointPreference) { 446 mSelectedAccessPoint = 447 ((LongPressAccessPointPreference) preference).getAccessPoint(); 448 menu.setHeaderTitle(mSelectedAccessPoint.getSsid()); 449 if (mSelectedAccessPoint.isConnectable()) { 450 menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect); 451 } 452 453 WifiConfiguration config = mSelectedAccessPoint.getConfig(); 454 // Some configs are ineditable 455 if (isEditabilityLockedDown(getActivity(), config)) { 456 return; 457 } 458 459 if (mSelectedAccessPoint.isSaved() || mSelectedAccessPoint.isEphemeral()) { 460 // Allow forgetting a network if either the network is saved or ephemerally 461 // connected. (In the latter case, "forget" blacklists the network so it won't 462 // be used again, ephemerally). 463 menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget); 464 } 465 if (mSelectedAccessPoint.isSaved()) { 466 menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify); 467 NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(getActivity()); 468 if (nfcAdapter != null && nfcAdapter.isEnabled() && 469 mSelectedAccessPoint.getSecurity() != AccessPoint.SECURITY_NONE) { 470 // Only allow writing of NFC tags for password-protected networks. 471 menu.add(Menu.NONE, MENU_ID_WRITE_NFC, 0, R.string.wifi_menu_write_to_nfc); 472 } 473 } 474 } 475 } 476 477 @Override 478 public boolean onContextItemSelected(MenuItem item) { 479 if (mSelectedAccessPoint == null) { 480 return super.onContextItemSelected(item); 481 } 482 switch (item.getItemId()) { 483 case MENU_ID_CONNECT: { 484 if (mSelectedAccessPoint.isSaved()) { 485 connect(mSelectedAccessPoint.getConfig()); 486 } else if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE) { 487 /** Bypass dialog for unsecured networks */ 488 mSelectedAccessPoint.generateOpenNetworkConfig(); 489 connect(mSelectedAccessPoint.getConfig()); 490 } else { 491 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT); 492 } 493 return true; 494 } 495 case MENU_ID_FORGET: { 496 forget(); 497 return true; 498 } 499 case MENU_ID_MODIFY: { 500 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_MODIFY); 501 return true; 502 } 503 case MENU_ID_WRITE_NFC: 504 showDialog(WRITE_NFC_DIALOG_ID); 505 return true; 506 507 } 508 return super.onContextItemSelected(item); 509 } 510 511 @Override 512 public boolean onPreferenceTreeClick(Preference preference) { 513 if (preference instanceof LongPressAccessPointPreference) { 514 mSelectedAccessPoint = ((LongPressAccessPointPreference) preference).getAccessPoint(); 515 if (mSelectedAccessPoint == null) { 516 return false; 517 } 518 /** Bypass dialog for unsecured, unsaved, and inactive networks */ 519 if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE && 520 !mSelectedAccessPoint.isSaved() && !mSelectedAccessPoint.isActive()) { 521 mSelectedAccessPoint.generateOpenNetworkConfig(); 522 connect(mSelectedAccessPoint.getConfig()); 523 } else if (mSelectedAccessPoint.isSaved()) { 524 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_VIEW); 525 } else { 526 showDialog(mSelectedAccessPoint, WifiConfigUiBase.MODE_CONNECT); 527 } 528 } else if (preference == mAddPreference) { 529 onAddNetworkPressed(); 530 } else { 531 return super.onPreferenceTreeClick(preference); 532 } 533 return true; 534 } 535 536 private void showDialog(AccessPoint accessPoint, int dialogMode) { 537 if (accessPoint != null) { 538 WifiConfiguration config = accessPoint.getConfig(); 539 if (isEditabilityLockedDown(getActivity(), config) && accessPoint.isActive()) { 540 RestrictedLockUtils.sendShowAdminSupportDetailsIntent(getActivity(), 541 RestrictedLockUtils.getDeviceOwner(getActivity())); 542 return; 543 } 544 } 545 546 if (mDialog != null) { 547 removeDialog(WIFI_DIALOG_ID); 548 mDialog = null; 549 } 550 551 // Save the access point and edit mode 552 mDlgAccessPoint = accessPoint; 553 mDialogMode = dialogMode; 554 555 showDialog(WIFI_DIALOG_ID); 556 } 557 558 @Override 559 public Dialog onCreateDialog(int dialogId) { 560 switch (dialogId) { 561 case WIFI_DIALOG_ID: 562 AccessPoint ap = mDlgAccessPoint; // For manual launch 563 if (ap == null) { // For re-launch from saved state 564 if (mAccessPointSavedState != null) { 565 ap = new AccessPoint(getActivity(), mAccessPointSavedState); 566 // For repeated orientation changes 567 mDlgAccessPoint = ap; 568 // Reset the saved access point data 569 mAccessPointSavedState = null; 570 } 571 } 572 // If it's null, fine, it's for Add Network 573 mSelectedAccessPoint = ap; 574 mDialog = new WifiDialog(getActivity(), this, ap, mDialogMode, 575 /* no hide submit/connect */ false); 576 return mDialog; 577 case WPS_PBC_DIALOG_ID: 578 return new WpsDialog(getActivity(), WpsInfo.PBC); 579 case WPS_PIN_DIALOG_ID: 580 return new WpsDialog(getActivity(), WpsInfo.DISPLAY); 581 case WRITE_NFC_DIALOG_ID: 582 if (mSelectedAccessPoint != null) { 583 mWifiToNfcDialog = new WriteWifiConfigToNfcDialog( 584 getActivity(), mSelectedAccessPoint.getConfig().networkId, 585 mSelectedAccessPoint.getSecurity(), 586 mWifiManager); 587 } else if (mWifiNfcDialogSavedState != null) { 588 mWifiToNfcDialog = new WriteWifiConfigToNfcDialog( 589 getActivity(), mWifiNfcDialogSavedState, mWifiManager); 590 } 591 592 return mWifiToNfcDialog; 593 } 594 return super.onCreateDialog(dialogId); 595 } 596 597 /** 598 * Shows the latest access points available with supplemental information like 599 * the strength of network and the security for it. 600 */ 601 @Override 602 public void onAccessPointsChanged() { 603 // Safeguard from some delayed event handling 604 if (getActivity() == null) return; 605 if (isUiRestricted()) { 606 if (!isUiRestrictedByOnlyAdmin()) { 607 addMessagePreference(R.string.wifi_empty_list_user_restricted); 608 } 609 getPreferenceScreen().removeAll(); 610 return; 611 } 612 final int wifiState = mWifiManager.getWifiState(); 613 614 switch (wifiState) { 615 case WifiManager.WIFI_STATE_ENABLED: 616 // AccessPoints are automatically sorted with TreeSet. 617 final Collection<AccessPoint> accessPoints = 618 mWifiTracker.getAccessPoints(); 619 620 boolean hasAvailableAccessPoints = false; 621 int index = 0; 622 cacheRemoveAllPrefs(getPreferenceScreen()); 623 for (AccessPoint accessPoint : accessPoints) { 624 // Ignore access points that are out of range. 625 if (accessPoint.getLevel() != -1) { 626 String key = accessPoint.getBssid(); 627 if (TextUtils.isEmpty(key)) { 628 key = accessPoint.getSsidStr(); 629 } 630 hasAvailableAccessPoints = true; 631 LongPressAccessPointPreference pref = (LongPressAccessPointPreference) 632 getCachedPreference(key); 633 if (pref != null) { 634 pref.setOrder(index++); 635 continue; 636 } 637 LongPressAccessPointPreference 638 preference = new LongPressAccessPointPreference(accessPoint, 639 getPrefContext(), mUserBadgeCache, false, 640 R.drawable.ic_wifi_signal_0, this); 641 preference.setKey(key); 642 preference.setOrder(index++); 643 if (mOpenSsid != null && mOpenSsid.equals(accessPoint.getSsidStr()) 644 && !accessPoint.isSaved() 645 && accessPoint.getSecurity() != AccessPoint.SECURITY_NONE) { 646 onPreferenceTreeClick(preference); 647 mOpenSsid = null; 648 } 649 getPreferenceScreen().addPreference(preference); 650 accessPoint.setListener(this); 651 preference.refresh(); 652 } 653 } 654 removeCachedPrefs(getPreferenceScreen()); 655 if (!hasAvailableAccessPoints) { 656 setProgressBarVisible(true); 657 Preference pref = new Preference(getContext()) { 658 @Override 659 public void onBindViewHolder(PreferenceViewHolder holder) { 660 super.onBindViewHolder(holder); 661 // Show a line on each side of add network. 662 holder.setDividerAllowedBelow(true); 663 } 664 }; 665 pref.setSelectable(false); 666 pref.setSummary(R.string.wifi_empty_list_wifi_on); 667 pref.setOrder(0); 668 pref.setKey(PREF_KEY_EMPTY_WIFI_LIST); 669 getPreferenceScreen().addPreference(pref); 670 mAddPreference.setOrder(1); 671 getPreferenceScreen().addPreference(mAddPreference); 672 } else { 673 mAddPreference.setOrder(index++); 674 getPreferenceScreen().addPreference(mAddPreference); 675 setProgressBarVisible(false); 676 } 677 if (mScanMenuItem != null) { 678 mScanMenuItem.setEnabled(true); 679 } 680 break; 681 682 case WifiManager.WIFI_STATE_ENABLING: 683 getPreferenceScreen().removeAll(); 684 setProgressBarVisible(true); 685 break; 686 687 case WifiManager.WIFI_STATE_DISABLING: 688 addMessagePreference(R.string.wifi_stopping); 689 setProgressBarVisible(true); 690 break; 691 692 case WifiManager.WIFI_STATE_DISABLED: 693 setOffMessage(); 694 setProgressBarVisible(false); 695 if (mScanMenuItem != null) { 696 mScanMenuItem.setEnabled(false); 697 } 698 break; 699 } 700 } 701 702 private void setOffMessage() { 703 if (isUiRestricted()) { 704 if (!isUiRestrictedByOnlyAdmin()) { 705 addMessagePreference(R.string.wifi_empty_list_user_restricted); 706 } 707 getPreferenceScreen().removeAll(); 708 return; 709 } 710 711 TextView emptyTextView = getEmptyTextView(); 712 if (emptyTextView == null) { 713 return; 714 } 715 716 final CharSequence briefText = getText(R.string.wifi_empty_list_wifi_off); 717 718 // Don't use WifiManager.isScanAlwaysAvailable() to check the Wi-Fi scanning mode. Instead, 719 // read the system settings directly. Because when the device is in Airplane mode, even if 720 // Wi-Fi scanning mode is on, WifiManager.isScanAlwaysAvailable() still returns "off". 721 final ContentResolver resolver = getActivity().getContentResolver(); 722 final boolean wifiScanningMode = Settings.Global.getInt( 723 resolver, Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1; 724 725 if (!wifiScanningMode) { 726 // Show only the brief text if the user is not allowed to configure scanning settings, 727 // or the scanning mode has been turned off. 728 emptyTextView.setText(briefText, BufferType.SPANNABLE); 729 } else { 730 // Append the description of scanning settings with link. 731 final StringBuilder contentBuilder = new StringBuilder(); 732 contentBuilder.append(briefText); 733 contentBuilder.append("\n\n"); 734 contentBuilder.append(getText(R.string.wifi_scan_notify_text)); 735 LinkifyUtils.linkify(emptyTextView, contentBuilder, new LinkifyUtils.OnClickListener() { 736 @Override 737 public void onClick() { 738 final SettingsActivity activity = 739 (SettingsActivity) WifiSettings.this.getActivity(); 740 activity.startPreferencePanel(ScanningSettings.class.getName(), null, 741 R.string.location_scanning_screen_title, null, null, 0); 742 } 743 }); 744 } 745 // Embolden and enlarge the brief description anyway. 746 Spannable boldSpan = (Spannable) emptyTextView.getText(); 747 boldSpan.setSpan( 748 new TextAppearanceSpan(getActivity(), android.R.style.TextAppearance_Medium), 0, 749 briefText.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 750 getPreferenceScreen().removeAll(); 751 } 752 753 private void addMessagePreference(int messageId) { 754 TextView emptyTextView = getEmptyTextView(); 755 if (emptyTextView != null) emptyTextView.setText(messageId); 756 getPreferenceScreen().removeAll(); 757 } 758 759 protected void setProgressBarVisible(boolean visible) { 760 if (mProgressHeader != null) { 761 mProgressHeader.setVisibility(visible ? View.VISIBLE : View.GONE); 762 } 763 } 764 765 @Override 766 public void onWifiStateChanged(int state) { 767 switch (state) { 768 case WifiManager.WIFI_STATE_ENABLING: 769 addMessagePreference(R.string.wifi_starting); 770 setProgressBarVisible(true); 771 break; 772 773 case WifiManager.WIFI_STATE_DISABLED: 774 setOffMessage(); 775 setProgressBarVisible(false); 776 break; 777 } 778 } 779 780 @Override 781 public void onConnectedChanged() { 782 changeNextButtonState(mWifiTracker.isConnected()); 783 } 784 785 /** 786 * Renames/replaces "Next" button when appropriate. "Next" button usually exists in 787 * Wifi setup screens, not in usual wifi settings screen. 788 * 789 * @param enabled true when the device is connected to a wifi network. 790 */ 791 private void changeNextButtonState(boolean enabled) { 792 if (mEnableNextOnConnection && hasNextButton()) { 793 getNextButton().setEnabled(enabled); 794 } 795 } 796 797 @Override 798 public void onForget(WifiDialog dialog) { 799 forget(); 800 } 801 802 @Override 803 public void onSubmit(WifiDialog dialog) { 804 if (mDialog != null) { 805 submit(mDialog.getController()); 806 } 807 } 808 809 /* package */ void submit(WifiConfigController configController) { 810 811 final WifiConfiguration config = configController.getConfig(); 812 813 if (config == null) { 814 if (mSelectedAccessPoint != null 815 && mSelectedAccessPoint.isSaved()) { 816 connect(mSelectedAccessPoint.getConfig()); 817 } 818 } else if (configController.getMode() == WifiConfigUiBase.MODE_MODIFY) { 819 mWifiManager.save(config, mSaveListener); 820 } else { 821 mWifiManager.save(config, mSaveListener); 822 if (mSelectedAccessPoint != null) { // Not an "Add network" 823 connect(config); 824 } 825 } 826 827 mWifiTracker.resumeScanning(); 828 } 829 830 /* package */ void forget() { 831 MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_FORGET); 832 if (!mSelectedAccessPoint.isSaved()) { 833 if (mSelectedAccessPoint.getNetworkInfo() != null && 834 mSelectedAccessPoint.getNetworkInfo().getState() != State.DISCONNECTED) { 835 // Network is active but has no network ID - must be ephemeral. 836 mWifiManager.disableEphemeralNetwork( 837 AccessPoint.convertToQuotedString(mSelectedAccessPoint.getSsidStr())); 838 } else { 839 // Should not happen, but a monkey seems to trigger it 840 Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig()); 841 return; 842 } 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) { 854 MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT); 855 mWifiManager.connect(config, mConnectListener); 856 } 857 858 protected void connect(final int networkId) { 859 MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_CONNECT); 860 mWifiManager.connect(networkId, mConnectListener); 861 } 862 863 /** 864 * Called when "add network" button is pressed. 865 */ 866 /* package */ void onAddNetworkPressed() { 867 MetricsLogger.action(getActivity(), MetricsEvent.ACTION_WIFI_ADD_NETWORK); 868 // No exact access point is selected. 869 mSelectedAccessPoint = null; 870 showDialog(null, WifiConfigUiBase.MODE_CONNECT); 871 } 872 873 @Override 874 protected int getHelpResource() { 875 return R.string.help_url_wifi; 876 } 877 878 @Override 879 public void onAccessPointChanged(final AccessPoint accessPoint) { 880 View view = getView(); 881 if (view != null) { 882 view.post(new Runnable() { 883 @Override 884 public void run() { 885 Object tag = accessPoint.getTag(); 886 if (tag != null) { 887 ((LongPressAccessPointPreference) tag).refresh(); 888 } 889 } 890 }); 891 } 892 } 893 894 @Override 895 public void onLevelChanged(AccessPoint accessPoint) { 896 ((LongPressAccessPointPreference) accessPoint.getTag()).onLevelChanged(); 897 } 898 899 public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = 900 new BaseSearchIndexProvider() { 901 @Override 902 public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) { 903 final List<SearchIndexableRaw> result = new ArrayList<>(); 904 final Resources res = context.getResources(); 905 906 // Add fragment title 907 SearchIndexableRaw data = new SearchIndexableRaw(context); 908 data.title = res.getString(R.string.wifi_settings); 909 data.screenTitle = res.getString(R.string.wifi_settings); 910 data.keywords = res.getString(R.string.keywords_wifi); 911 result.add(data); 912 913 // Add saved Wi-Fi access points 914 final Collection<AccessPoint> accessPoints = 915 WifiTracker.getCurrentAccessPoints(context, true, false, false); 916 for (AccessPoint accessPoint : accessPoints) { 917 data = new SearchIndexableRaw(context); 918 data.title = accessPoint.getSsidStr(); 919 data.screenTitle = res.getString(R.string.wifi_settings); 920 data.enabled = enabled; 921 result.add(data); 922 } 923 924 return result; 925 } 926 }; 927 928 /** 929 * Returns true if the config is not editable through Settings. 930 * @param context Context of caller 931 * @param config The WiFi config. 932 * @return true if the config is not editable through Settings. 933 */ 934 static boolean isEditabilityLockedDown(Context context, WifiConfiguration config) { 935 return !canModifyNetwork(context, config); 936 } 937 938 /** 939 * This method is a stripped version of WifiConfigStore.canModifyNetwork. 940 * TODO: refactor to have only one method. 941 * @param context Context of caller 942 * @param config The WiFi config. 943 * @return true if Settings can modify the config. 944 */ 945 static boolean canModifyNetwork(Context context, WifiConfiguration config) { 946 if (config == null) { 947 return true; 948 } 949 950 final DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService( 951 Context.DEVICE_POLICY_SERVICE); 952 953 // Check if device has DPM capability. If it has and dpm is still null, then we 954 // treat this case with suspicion and bail out. 955 final PackageManager pm = context.getPackageManager(); 956 if (pm.hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) && dpm == null) { 957 return false; 958 } 959 960 boolean isConfigEligibleForLockdown = false; 961 if (dpm != null) { 962 final ComponentName deviceOwner = dpm.getDeviceOwnerComponentOnAnyUser(); 963 if (deviceOwner != null) { 964 final int deviceOwnerUserId = dpm.getDeviceOwnerUserId(); 965 try { 966 final int deviceOwnerUid = pm.getPackageUidAsUser(deviceOwner.getPackageName(), 967 deviceOwnerUserId); 968 isConfigEligibleForLockdown = deviceOwnerUid == config.creatorUid; 969 } catch (NameNotFoundException e) { 970 // don't care 971 } 972 } 973 } 974 if (!isConfigEligibleForLockdown) { 975 return true; 976 } 977 978 final ContentResolver resolver = context.getContentResolver(); 979 final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver, 980 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0; 981 return !isLockdownFeatureEnabled; 982 } 983 984 private static class SummaryProvider extends BroadcastReceiver 985 implements SummaryLoader.SummaryProvider { 986 987 private final Context mContext; 988 private final WifiManager mWifiManager; 989 private final WifiStatusTracker mWifiTracker; 990 private final SummaryLoader mSummaryLoader; 991 992 public SummaryProvider(Context context, SummaryLoader summaryLoader) { 993 mContext = context; 994 mSummaryLoader = summaryLoader; 995 mWifiManager = context.getSystemService(WifiManager.class); 996 mWifiTracker = new WifiStatusTracker(mWifiManager); 997 } 998 999 private CharSequence getSummary() { 1000 if (!mWifiTracker.enabled) { 1001 return mContext.getString(R.string.wifi_disabled_generic); 1002 } 1003 if (!mWifiTracker.connected) { 1004 return mContext.getString(R.string.disconnected); 1005 } 1006 return mWifiTracker.ssid; 1007 } 1008 1009 @Override 1010 public void setListening(boolean listening) { 1011 if (listening) { 1012 IntentFilter filter = new IntentFilter(); 1013 filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION); 1014 filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); 1015 filter.addAction(WifiManager.RSSI_CHANGED_ACTION); 1016 mSummaryLoader.registerReceiver(this, filter); 1017 } 1018 } 1019 1020 @Override 1021 public void onReceive(Context context, Intent intent) { 1022 mWifiTracker.handleBroadcast(intent); 1023 mSummaryLoader.setSummary(this, getSummary()); 1024 } 1025 } 1026 1027 public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY 1028 = new SummaryLoader.SummaryProviderFactory() { 1029 @Override 1030 public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity, 1031 SummaryLoader summaryLoader) { 1032 return new SummaryProvider(activity, summaryLoader); 1033 } 1034 }; 1035 } 1036
