WifiSettings.java revision 568d1560898687de216f38bdc2bd5f933aed3f7d
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 static android.net.wifi.WifiConfiguration.INVALID_NETWORK_ID; 20import static android.os.UserManager.DISALLOW_CONFIG_WIFI; 21 22import android.app.Activity; 23import android.app.Dialog; 24import android.content.BroadcastReceiver; 25import android.content.Context; 26import android.content.DialogInterface; 27import android.content.Intent; 28import android.content.IntentFilter; 29import android.content.res.Resources; 30import android.content.res.TypedArray; 31import android.location.LocationManager; 32import android.net.ConnectivityManager; 33import android.net.NetworkInfo; 34import android.net.NetworkInfo.DetailedState; 35import android.net.NetworkInfo.State; 36import android.net.wifi.ScanResult; 37import android.net.wifi.WifiConfiguration; 38import android.net.wifi.WifiInfo; 39import android.net.wifi.WifiManager; 40import android.net.wifi.WpsInfo; 41import android.os.Bundle; 42import android.os.Handler; 43import android.os.Message; 44import android.os.UserHandle; 45import android.preference.Preference; 46import android.preference.PreferenceScreen; 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.AdapterView.AdapterContextMenuInfo; 55import android.widget.TextView; 56import android.widget.Toast; 57 58import com.android.settings.R; 59import com.android.settings.RestrictedSettingsFragment; 60import com.android.settings.SettingsActivity; 61import com.android.settings.search.BaseSearchIndexProvider; 62import com.android.settings.search.Indexable; 63import com.android.settings.search.SearchIndexableRaw; 64 65import java.util.ArrayList; 66import java.util.Collection; 67import java.util.Collections; 68import java.util.HashMap; 69import java.util.List; 70import java.util.concurrent.atomic.AtomicBoolean; 71 72/** 73 * Two types of UI are provided here. 74 * 75 * The first is for "usual Settings", appearing as any other Setup fragment. 76 * 77 * The second is for Setup Wizard, with a simplified interface that hides the action bar 78 * and menus. 79 */ 80public class WifiSettings extends RestrictedSettingsFragment 81 implements DialogInterface.OnClickListener, Indexable { 82 83 private static final String TAG = "WifiSettings"; 84 85 /* package */ static final int MENU_ID_WPS_PBC = Menu.FIRST; 86 private static final int MENU_ID_WPS_PIN = Menu.FIRST + 1; 87 private static final int MENU_ID_SAVED_NETWORK = Menu.FIRST + 2; 88 /* package */ static final int MENU_ID_ADD_NETWORK = Menu.FIRST + 3; 89 private static final int MENU_ID_ADVANCED = Menu.FIRST + 4; 90 private static final int MENU_ID_SCAN = Menu.FIRST + 5; 91 private static final int MENU_ID_CONNECT = Menu.FIRST + 6; 92 private static final int MENU_ID_FORGET = Menu.FIRST + 7; 93 private static final int MENU_ID_MODIFY = Menu.FIRST + 8; 94 private static final int MENU_ID_WRITE_NFC = Menu.FIRST + 9; 95 private static final int MENU_ID_APPS = Menu.FIRST + 10; 96 97 public static final int WIFI_DIALOG_ID = 1; 98 /* package */ static final int WPS_PBC_DIALOG_ID = 2; 99 private static final int WPS_PIN_DIALOG_ID = 3; 100 private static final int WRITE_NFC_DIALOG_ID = 6; 101 102 // Combo scans can take 5-6s to complete - set to 10s. 103 private static final int WIFI_RESCAN_INTERVAL_MS = 10 * 1000; 104 105 // Instance state keys 106 private static final String SAVE_DIALOG_EDIT_MODE = "edit_mode"; 107 private static final String SAVE_DIALOG_ACCESS_POINT_STATE = "wifi_ap_state"; 108 109 private static boolean savedNetworksExist; 110 111 private final IntentFilter mFilter; 112 private final BroadcastReceiver mReceiver; 113 private final Scanner mScanner; 114 115 /* package */ WifiManager mWifiManager; 116 private WifiManager.ActionListener mConnectListener; 117 private WifiManager.ActionListener mSaveListener; 118 private WifiManager.ActionListener mForgetListener; 119 120 private WifiEnabler mWifiEnabler; 121 // An access point being editted is stored here. 122 private AccessPoint mSelectedAccessPoint; 123 124 private NetworkInfo mLastNetworkInfo; 125 private WifiInfo mLastInfo; 126 127 private final AtomicBoolean mConnected = new AtomicBoolean(false); 128 129 private WifiDialog mDialog; 130 private WriteWifiConfigToNfcDialog mWifiToNfcDialog; 131 132 private TextView mEmptyView; 133 134 private boolean showAppIcons = false; 135 private MenuItem showAppMenuItem = null; 136 137 // this boolean extra specifies whether to disable the Next button when not connected. Used by 138 // account creation outside of setup wizard. 139 private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect"; 140 // This string extra specifies a network to open the connect dialog on, so the user can enter 141 // network credentials. This is used by quick settings for secured networks. 142 private static final String EXTRA_START_CONNECT_SSID = "wifi_start_connect_ssid"; 143 144 // should Next button only be enabled when we have a connection? 145 private boolean mEnableNextOnConnection; 146 147 // Save the dialog details 148 private boolean mDlgEdit; 149 private AccessPoint mDlgAccessPoint; 150 private Bundle mAccessPointSavedState; 151 152 /** verbose logging flag. this flag is set thru developer debugging options 153 * and used so as to assist with in-the-field WiFi connectivity debugging */ 154 public static int mVerboseLogging = 0; 155 156 /* End of "used in Wifi Setup context" */ 157 158 /** A restricted multimap for use in constructAccessPoints */ 159 private static class Multimap<K,V> { 160 private final HashMap<K,List<V>> store = new HashMap<K,List<V>>(); 161 /** retrieve a non-null list of values with key K */ 162 List<V> getAll(K key) { 163 List<V> values = store.get(key); 164 return values != null ? values : Collections.<V>emptyList(); 165 } 166 167 void put(K key, V val) { 168 List<V> curVals = store.get(key); 169 if (curVals == null) { 170 curVals = new ArrayList<V>(3); 171 store.put(key, curVals); 172 } 173 curVals.add(val); 174 } 175 } 176 177 private static class Scanner extends Handler { 178 private int mRetry = 0; 179 private WifiSettings mWifiSettings = null; 180 181 Scanner(WifiSettings wifiSettings) { 182 mWifiSettings = wifiSettings; 183 } 184 185 void resume() { 186 if (!hasMessages(0)) { 187 sendEmptyMessage(0); 188 } 189 } 190 191 void forceScan() { 192 removeMessages(0); 193 sendEmptyMessage(0); 194 } 195 196 void pause() { 197 mRetry = 0; 198 removeMessages(0); 199 } 200 201 @Override 202 public void handleMessage(Message message) { 203 if (mWifiSettings.mWifiManager.startScan()) { 204 mRetry = 0; 205 } else if (++mRetry >= 3) { 206 mRetry = 0; 207 Activity activity = mWifiSettings.getActivity(); 208 if (activity != null) { 209 Toast.makeText(activity, R.string.wifi_fail_to_scan, Toast.LENGTH_LONG).show(); 210 } 211 return; 212 } 213 sendEmptyMessageDelayed(0, WIFI_RESCAN_INTERVAL_MS); 214 } 215 } 216 217 public WifiSettings() { 218 super(DISALLOW_CONFIG_WIFI); 219 mFilter = new IntentFilter(); 220 mFilter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION); 221 mFilter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 222 mFilter.addAction(WifiManager.NETWORK_IDS_CHANGED_ACTION); 223 mFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION); 224 mFilter.addAction(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION); 225 mFilter.addAction(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 226 mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); 227 mFilter.addAction(WifiManager.RSSI_CHANGED_ACTION); 228 229 mReceiver = new BroadcastReceiver() { 230 @Override 231 public void onReceive(Context context, Intent intent) { 232 handleEvent(intent); 233 } 234 }; 235 236 mScanner = new Scanner(this); 237 } 238 239 @Override 240 public void onActivityCreated(Bundle savedInstanceState) { 241 super.onActivityCreated(savedInstanceState); 242 243 mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE); 244 245 mConnectListener = new WifiManager.ActionListener() { 246 @Override 247 public void onSuccess() { 248 } 249 @Override 250 public void onFailure(int reason) { 251 Activity activity = getActivity(); 252 if (activity != null) { 253 Toast.makeText(activity, 254 R.string.wifi_failed_connect_message, 255 Toast.LENGTH_SHORT).show(); 256 } 257 } 258 }; 259 260 mSaveListener = new WifiManager.ActionListener() { 261 @Override 262 public void onSuccess() { 263 } 264 @Override 265 public void onFailure(int reason) { 266 Activity activity = getActivity(); 267 if (activity != null) { 268 Toast.makeText(activity, 269 R.string.wifi_failed_save_message, 270 Toast.LENGTH_SHORT).show(); 271 } 272 } 273 }; 274 275 mForgetListener = new WifiManager.ActionListener() { 276 @Override 277 public void onSuccess() { 278 } 279 @Override 280 public void onFailure(int reason) { 281 Activity activity = getActivity(); 282 if (activity != null) { 283 Toast.makeText(activity, 284 R.string.wifi_failed_forget_message, 285 Toast.LENGTH_SHORT).show(); 286 } 287 } 288 }; 289 290 if (savedInstanceState != null) { 291 mDlgEdit = savedInstanceState.getBoolean(SAVE_DIALOG_EDIT_MODE); 292 if (savedInstanceState.containsKey(SAVE_DIALOG_ACCESS_POINT_STATE)) { 293 mAccessPointSavedState = 294 savedInstanceState.getBundle(SAVE_DIALOG_ACCESS_POINT_STATE); 295 } 296 } 297 298 // if we're supposed to enable/disable the Next button based on our current connection 299 // state, start it off in the right state 300 Intent intent = getActivity().getIntent(); 301 mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false); 302 303 if (mEnableNextOnConnection) { 304 if (hasNextButton()) { 305 final ConnectivityManager connectivity = (ConnectivityManager) 306 getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); 307 if (connectivity != null) { 308 NetworkInfo info = connectivity.getNetworkInfo( 309 ConnectivityManager.TYPE_WIFI); 310 changeNextButtonState(info.isConnected()); 311 } 312 } 313 } 314 315 addPreferencesFromResource(R.xml.wifi_settings); 316 317 mEmptyView = initEmptyView(); 318 registerForContextMenu(getListView()); 319 setHasOptionsMenu(true); 320 321 if (intent.hasExtra(EXTRA_START_CONNECT_SSID)) { 322 String ssid = intent.getStringExtra(EXTRA_START_CONNECT_SSID); 323 updateAccessPoints(); 324 PreferenceScreen preferenceScreen = getPreferenceScreen(); 325 for (int i = 0; i < preferenceScreen.getPreferenceCount(); i++) { 326 Preference preference = preferenceScreen.getPreference(i); 327 if (preference instanceof AccessPoint) { 328 AccessPoint accessPoint = (AccessPoint) preference; 329 if (ssid.equals(accessPoint.ssid) && accessPoint.networkId == -1 330 && accessPoint.security != AccessPoint.SECURITY_NONE) { 331 onPreferenceTreeClick(preferenceScreen, preference); 332 break; 333 } 334 } 335 } 336 } 337 } 338 339 @Override 340 public void onDestroyView() { 341 super.onDestroyView(); 342 343 if (mWifiEnabler != null) { 344 mWifiEnabler.teardownSwitchBar(); 345 } 346 } 347 348 @Override 349 public void onStart() { 350 super.onStart(); 351 352 // On/off switch is hidden for Setup Wizard (returns null) 353 mWifiEnabler = createWifiEnabler(); 354 } 355 356 /** 357 * @return new WifiEnabler or null (as overridden by WifiSettingsForSetupWizard) 358 */ 359 /* package */ WifiEnabler createWifiEnabler() { 360 final SettingsActivity activity = (SettingsActivity) getActivity(); 361 return new WifiEnabler(activity, activity.getSwitchBar()); 362 } 363 364 @Override 365 public void onResume() { 366 final Activity activity = getActivity(); 367 super.onResume(); 368 if (mWifiEnabler != null) { 369 mWifiEnabler.resume(activity); 370 } 371 372 activity.registerReceiver(mReceiver, mFilter); 373 updateAccessPoints(); 374 } 375 376 @Override 377 public void onPause() { 378 super.onPause(); 379 if (mWifiEnabler != null) { 380 mWifiEnabler.pause(); 381 } 382 383 getActivity().unregisterReceiver(mReceiver); 384 mScanner.pause(); 385 } 386 387 @Override 388 public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 389 // If the user is not allowed to configure wifi, do not show the menu. 390 if (isUiRestricted()) return; 391 392 addOptionsMenuItems(menu); 393 super.onCreateOptionsMenu(menu, inflater); 394 } 395 396 /** 397 * @param menu 398 */ 399 void addOptionsMenuItems(Menu menu) { 400 final boolean wifiIsEnabled = mWifiManager.isWifiEnabled(); 401 TypedArray ta = getActivity().getTheme().obtainStyledAttributes( 402 new int[] {R.attr.ic_menu_add, R.attr.ic_wps}); 403 menu.add(Menu.NONE, MENU_ID_ADD_NETWORK, 0, R.string.wifi_add_network) 404 .setIcon(ta.getDrawable(0)) 405 .setEnabled(wifiIsEnabled) 406 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 407 if (savedNetworksExist) { 408 menu.add(Menu.NONE, MENU_ID_SAVED_NETWORK, 0, R.string.wifi_saved_access_points_label) 409 .setIcon(ta.getDrawable(0)) 410 .setEnabled(wifiIsEnabled) 411 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 412 } 413 menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.menu_stats_refresh) 414 .setEnabled(wifiIsEnabled) 415 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 416 menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced) 417 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 418 showAppMenuItem = menu.add(Menu.NONE, MENU_ID_APPS, 0, R.string.wifi_menu_apps); 419 showAppMenuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 420 ta.recycle(); 421 } 422 423 @Override 424 public void onSaveInstanceState(Bundle outState) { 425 super.onSaveInstanceState(outState); 426 427 // If the dialog is showing, save its state. 428 if (mDialog != null && mDialog.isShowing()) { 429 outState.putBoolean(SAVE_DIALOG_EDIT_MODE, mDlgEdit); 430 if (mDlgAccessPoint != null) { 431 mAccessPointSavedState = new Bundle(); 432 mDlgAccessPoint.saveWifiState(mAccessPointSavedState); 433 outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState); 434 } 435 } 436 } 437 438 @Override 439 public boolean onOptionsItemSelected(MenuItem item) { 440 // If the user is not allowed to configure wifi, do not handle menu selections. 441 if (isUiRestricted()) return false; 442 443 switch (item.getItemId()) { 444 case MENU_ID_WPS_PBC: 445 showDialog(WPS_PBC_DIALOG_ID); 446 return true; 447 /* 448 case MENU_ID_P2P: 449 if (getActivity() instanceof SettingsActivity) { 450 ((SettingsActivity) getActivity()).startPreferencePanel( 451 WifiP2pSettings.class.getCanonicalName(), 452 null, 453 R.string.wifi_p2p_settings_title, null, 454 this, 0); 455 } else { 456 startFragment(this, WifiP2pSettings.class.getCanonicalName(), 457 R.string.wifi_p2p_settings_title, -1, null); 458 } 459 return true; 460 */ 461 case MENU_ID_WPS_PIN: 462 showDialog(WPS_PIN_DIALOG_ID); 463 return true; 464 case MENU_ID_SCAN: 465 if (mWifiManager.isWifiEnabled()) { 466 mScanner.forceScan(); 467 } 468 return true; 469 case MENU_ID_ADD_NETWORK: 470 if (mWifiManager.isWifiEnabled()) { 471 onAddNetworkPressed(); 472 } 473 return true; 474 case MENU_ID_SAVED_NETWORK: 475 if (getActivity() instanceof SettingsActivity) { 476 ((SettingsActivity) getActivity()).startPreferencePanel( 477 SavedAccessPointsWifiSettings.class.getCanonicalName(), null, 478 R.string.wifi_saved_access_points_titlebar, null, this, 0); 479 } else { 480 startFragment(this, SavedAccessPointsWifiSettings.class.getCanonicalName(), 481 R.string.wifi_saved_access_points_titlebar, 482 -1 /* Do not request a result */, null); 483 } 484 return true; 485 case MENU_ID_ADVANCED: 486 if (getActivity() instanceof SettingsActivity) { 487 ((SettingsActivity) getActivity()).startPreferencePanel( 488 AdvancedWifiSettings.class.getCanonicalName(), null, 489 R.string.wifi_advanced_titlebar, null, this, 0); 490 } else { 491 startFragment(this, AdvancedWifiSettings.class.getCanonicalName(), 492 R.string.wifi_advanced_titlebar, -1 /* Do not request a results */, 493 null); 494 } 495 return true; 496 case MENU_ID_APPS: 497 showAppIcons = !showAppIcons; 498 499 if (showAppIcons) { 500 showAppMenuItem.setTitle(R.string.wifi_menu_apps_strength); 501 } else { 502 showAppMenuItem.setTitle(R.string.wifi_menu_apps); 503 } 504 updateAccessPoints(); 505 return true; 506 } 507 return super.onOptionsItemSelected(item); 508 } 509 510 @Override 511 public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) { 512 if (info instanceof AdapterContextMenuInfo) { 513 Preference preference = (Preference) getListView().getItemAtPosition( 514 ((AdapterContextMenuInfo) info).position); 515 516 if (preference instanceof AccessPoint) { 517 mSelectedAccessPoint = (AccessPoint) preference; 518 menu.setHeaderTitle(mSelectedAccessPoint.ssid); 519 if (mSelectedAccessPoint.getLevel() != -1) { 520 int connectStringRes = 0; 521 if (mSelectedAccessPoint.getState() == null) { 522 connectStringRes = R.string.wifi_menu_connect; 523 } else if (mSelectedAccessPoint.networkId == INVALID_NETWORK_ID && 524 mSelectedAccessPoint.getNetworkInfo().getState() 525 != State.DISCONNECTED) { 526 // State is non-null (and not disconnected) but this network has no 527 // configuration, which means it is ephemeral. Allow the user to save the 528 // configuration permanently (but still issue this as a CONNECT command). 529 connectStringRes = R.string.wifi_menu_remember; 530 } 531 532 if (connectStringRes != 0) { 533 menu.add(Menu.NONE, MENU_ID_CONNECT, 0, connectStringRes); 534 } 535 } 536 if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) { 537 menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget); 538 menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify); 539 540 if (mSelectedAccessPoint.security != AccessPoint.SECURITY_NONE) { 541 // Only allow writing of NFC tags for password-protected networks. 542 menu.add(Menu.NONE, MENU_ID_WRITE_NFC, 0, R.string.wifi_menu_write_to_nfc); 543 } 544 } 545 } 546 } 547 } 548 549 @Override 550 public boolean onContextItemSelected(MenuItem item) { 551 if (mSelectedAccessPoint == null) { 552 return super.onContextItemSelected(item); 553 } 554 switch (item.getItemId()) { 555 case MENU_ID_CONNECT: { 556 if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) { 557 connect(mSelectedAccessPoint.networkId); 558 } else if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE) { 559 /** Bypass dialog for unsecured networks */ 560 mSelectedAccessPoint.generateOpenNetworkConfig(); 561 connect(mSelectedAccessPoint.getConfig()); 562 } else { 563 showDialog(mSelectedAccessPoint, true); 564 } 565 return true; 566 } 567 case MENU_ID_FORGET: { 568 mWifiManager.forget(mSelectedAccessPoint.networkId, mForgetListener); 569 return true; 570 } 571 case MENU_ID_MODIFY: { 572 showDialog(mSelectedAccessPoint, true); 573 return true; 574 } 575 case MENU_ID_WRITE_NFC: 576 showDialog(WRITE_NFC_DIALOG_ID); 577 return true; 578 579 } 580 return super.onContextItemSelected(item); 581 } 582 583 @Override 584 public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) { 585 if (preference instanceof AccessPoint) { 586 mSelectedAccessPoint = (AccessPoint) preference; 587 /** Bypass dialog for unsecured, unsaved networks */ 588 if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE && 589 mSelectedAccessPoint.networkId == INVALID_NETWORK_ID) { 590 mSelectedAccessPoint.generateOpenNetworkConfig(); 591 if (!savedNetworksExist) { 592 savedNetworksExist = true; 593 getActivity().invalidateOptionsMenu(); 594 } 595 connect(mSelectedAccessPoint.getConfig()); 596 } else { 597 showDialog(mSelectedAccessPoint, false); 598 } 599 } else { 600 return super.onPreferenceTreeClick(screen, preference); 601 } 602 return true; 603 } 604 605 private void showDialog(AccessPoint accessPoint, boolean edit) { 606 if (mDialog != null) { 607 removeDialog(WIFI_DIALOG_ID); 608 mDialog = null; 609 } 610 611 // Save the access point and edit mode 612 mDlgAccessPoint = accessPoint; 613 mDlgEdit = edit; 614 615 showDialog(WIFI_DIALOG_ID); 616 } 617 618 @Override 619 public Dialog onCreateDialog(int dialogId) { 620 switch (dialogId) { 621 case WIFI_DIALOG_ID: 622 AccessPoint ap = mDlgAccessPoint; // For manual launch 623 if (ap == null) { // For re-launch from saved state 624 if (mAccessPointSavedState != null) { 625 ap = new AccessPoint(getActivity(), mAccessPointSavedState); 626 // For repeated orientation changes 627 mDlgAccessPoint = ap; 628 // Reset the saved access point data 629 mAccessPointSavedState = null; 630 } 631 } 632 // If it's null, fine, it's for Add Network 633 mSelectedAccessPoint = ap; 634 mDialog = new WifiDialog(getActivity(), this, ap, mDlgEdit); 635 return mDialog; 636 case WPS_PBC_DIALOG_ID: 637 return new WpsDialog(getActivity(), WpsInfo.PBC); 638 case WPS_PIN_DIALOG_ID: 639 return new WpsDialog(getActivity(), WpsInfo.DISPLAY); 640 case WRITE_NFC_DIALOG_ID: 641 if (mSelectedAccessPoint != null) { 642 mWifiToNfcDialog = new WriteWifiConfigToNfcDialog( 643 getActivity(), mSelectedAccessPoint, mWifiManager); 644 return mWifiToNfcDialog; 645 } 646 647 } 648 return super.onCreateDialog(dialogId); 649 } 650 651 /** 652 * Shows the latest access points available with supplemental information like 653 * the strength of network and the security for it. 654 */ 655 private void updateAccessPoints() { 656 // Safeguard from some delayed event handling 657 if (getActivity() == null) return; 658 659 if (isUiRestricted()) { 660 addMessagePreference(R.string.wifi_empty_list_user_restricted); 661 return; 662 } 663 final int wifiState = mWifiManager.getWifiState(); 664 665 //when we update the screen, check if verbose logging has been turned on or off 666 mVerboseLogging = mWifiManager.getVerboseLoggingLevel(); 667 668 switch (wifiState) { 669 case WifiManager.WIFI_STATE_ENABLED: 670 // AccessPoints are automatically sorted with TreeSet. 671 final Collection<AccessPoint> accessPoints = 672 constructAccessPoints(getActivity(), mWifiManager, mLastInfo, 673 mLastNetworkInfo); 674 getPreferenceScreen().removeAll(); 675 if (accessPoints.size() == 0) { 676 addMessagePreference(R.string.wifi_empty_list_wifi_on); 677 } 678 679 for (AccessPoint accessPoint : accessPoints) { 680 if (showAppIcons) { 681 accessPoint.showAppIcon(); 682 } 683 684 // Ignore access points that are out of range. 685 if (accessPoint.getLevel() != -1) { 686 getPreferenceScreen().addPreference(accessPoint); 687 } 688 } 689 break; 690 691 case WifiManager.WIFI_STATE_ENABLING: 692 getPreferenceScreen().removeAll(); 693 break; 694 695 case WifiManager.WIFI_STATE_DISABLING: 696 addMessagePreference(R.string.wifi_stopping); 697 break; 698 699 case WifiManager.WIFI_STATE_DISABLED: 700 setOffMessage(); 701 break; 702 } 703 } 704 705 protected TextView initEmptyView() { 706 TextView emptyView = (TextView) getActivity().findViewById(android.R.id.empty); 707 getListView().setEmptyView(emptyView); 708 return emptyView; 709 } 710 711 private void setOffMessage() { 712 if (mEmptyView != null) { 713 mEmptyView.setText(R.string.wifi_empty_list_wifi_off); 714 if (android.provider.Settings.Global.getInt(getActivity().getContentResolver(), 715 android.provider.Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1) { 716 mEmptyView.append("\n\n"); 717 int resId; 718 if (android.provider.Settings.Secure.isLocationProviderEnabled( 719 getActivity().getContentResolver(), LocationManager.NETWORK_PROVIDER)) { 720 resId = R.string.wifi_scan_notify_text_location_on; 721 } else { 722 resId = R.string.wifi_scan_notify_text_location_off; 723 } 724 CharSequence charSeq = getText(resId); 725 mEmptyView.append(charSeq); 726 } 727 } 728 getPreferenceScreen().removeAll(); 729 } 730 731 private void addMessagePreference(int messageId) { 732 if (mEmptyView != null) mEmptyView.setText(messageId); 733 getPreferenceScreen().removeAll(); 734 } 735 736 /** Returns sorted list of access points */ 737 private static List<AccessPoint> constructAccessPoints(Context context, 738 WifiManager wifiManager, WifiInfo lastInfo, NetworkInfo lastNetworkInfo) { 739 ArrayList<AccessPoint> accessPoints = new ArrayList<AccessPoint>(); 740 /** Lookup table to more quickly update AccessPoints by only considering objects with the 741 * correct SSID. Maps SSID -> List of AccessPoints with the given SSID. */ 742 Multimap<String, AccessPoint> apMap = new Multimap<String, AccessPoint>(); 743 744 final List<WifiConfiguration> configs = wifiManager.getConfiguredNetworks(); 745 if (configs != null) { 746 // Update "Saved Networks" menu option. 747 if (savedNetworksExist != (configs.size() > 0)) { 748 savedNetworksExist = !savedNetworksExist; 749 if (context instanceof Activity) { 750 ((Activity) context).invalidateOptionsMenu(); 751 } 752 } 753 for (WifiConfiguration config : configs) { 754 if (config.selfAdded && config.numAssociation == 0) { 755 continue; 756 } 757 AccessPoint accessPoint = new AccessPoint(context, config); 758 if (lastInfo != null && lastNetworkInfo != null) { 759 accessPoint.update(lastInfo, lastNetworkInfo); 760 } 761 accessPoints.add(accessPoint); 762 apMap.put(accessPoint.ssid, accessPoint); 763 } 764 } 765 766 final List<ScanResult> results = wifiManager.getScanResults(); 767 if (results != null) { 768 for (ScanResult result : results) { 769 // Ignore hidden and ad-hoc networks. 770 if (result.SSID == null || result.SSID.length() == 0 || 771 result.capabilities.contains("[IBSS]")) { 772 continue; 773 } 774 775 boolean found = false; 776 for (AccessPoint accessPoint : apMap.getAll(result.SSID)) { 777 if (accessPoint.update(result)) 778 found = true; 779 } 780 if (!found) { 781 AccessPoint accessPoint = new AccessPoint(context, result); 782 if (lastInfo != null && lastNetworkInfo != null) { 783 accessPoint.update(lastInfo, lastNetworkInfo); 784 } 785 accessPoints.add(accessPoint); 786 apMap.put(accessPoint.ssid, accessPoint); 787 } 788 } 789 } 790 791 // Pre-sort accessPoints to speed preference insertion 792 Collections.sort(accessPoints); 793 return accessPoints; 794 } 795 796 private void handleEvent(Intent intent) { 797 String action = intent.getAction(); 798 if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) { 799 updateWifiState(intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, 800 WifiManager.WIFI_STATE_UNKNOWN)); 801 } else if (WifiManager.SCAN_RESULTS_AVAILABLE_ACTION.equals(action) || 802 WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION.equals(action) || 803 WifiManager.LINK_CONFIGURATION_CHANGED_ACTION.equals(action)) { 804 updateAccessPoints(); 805 } else if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(action)) { 806 NetworkInfo info = (NetworkInfo) intent.getParcelableExtra( 807 WifiManager.EXTRA_NETWORK_INFO); 808 mConnected.set(info.isConnected()); 809 changeNextButtonState(info.isConnected()); 810 updateAccessPoints(); 811 updateNetworkInfo(info); 812 } else if (WifiManager.RSSI_CHANGED_ACTION.equals(action)) { 813 updateNetworkInfo(null); 814 } 815 } 816 817 private void updateNetworkInfo(NetworkInfo networkInfo) { 818 /* sticky broadcasts can call this when wifi is disabled */ 819 if (!mWifiManager.isWifiEnabled()) { 820 mScanner.pause(); 821 return; 822 } 823 824 if (networkInfo != null && 825 networkInfo.getDetailedState() == DetailedState.OBTAINING_IPADDR) { 826 mScanner.pause(); 827 } else { 828 mScanner.resume(); 829 } 830 831 mLastInfo = mWifiManager.getConnectionInfo(); 832 if (networkInfo != null) { 833 mLastNetworkInfo = networkInfo; 834 } 835 836 for (int i = getPreferenceScreen().getPreferenceCount() - 1; i >= 0; --i) { 837 // Maybe there's a WifiConfigPreference 838 Preference preference = getPreferenceScreen().getPreference(i); 839 if (preference instanceof AccessPoint) { 840 final AccessPoint accessPoint = (AccessPoint) preference; 841 accessPoint.update(mLastInfo, mLastNetworkInfo); 842 } 843 } 844 } 845 846 private void updateWifiState(int state) { 847 Activity activity = getActivity(); 848 if (activity != null) { 849 activity.invalidateOptionsMenu(); 850 } 851 852 switch (state) { 853 case WifiManager.WIFI_STATE_ENABLED: 854 mScanner.resume(); 855 return; // not break, to avoid the call to pause() below 856 857 case WifiManager.WIFI_STATE_ENABLING: 858 addMessagePreference(R.string.wifi_starting); 859 break; 860 861 case WifiManager.WIFI_STATE_DISABLED: 862 setOffMessage(); 863 break; 864 } 865 866 mLastInfo = null; 867 mLastNetworkInfo = null; 868 mScanner.pause(); 869 } 870 871 /** 872 * Renames/replaces "Next" button when appropriate. "Next" button usually exists in 873 * Wifi setup screens, not in usual wifi settings screen. 874 * 875 * @param enabled true when the device is connected to a wifi network. 876 */ 877 private void changeNextButtonState(boolean enabled) { 878 if (mEnableNextOnConnection && hasNextButton()) { 879 getNextButton().setEnabled(enabled); 880 } 881 } 882 883 @Override 884 public void onClick(DialogInterface dialogInterface, int button) { 885 if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) { 886 forget(); 887 } else if (button == WifiDialog.BUTTON_SUBMIT) { 888 if (mDialog != null) { 889 submit(mDialog.getController()); 890 } 891 } 892 } 893 894 /* package */ void submit(WifiConfigController configController) { 895 896 final WifiConfiguration config = configController.getConfig(); 897 898 if (config == null) { 899 if (mSelectedAccessPoint != null 900 && mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) { 901 connect(mSelectedAccessPoint.networkId); 902 } 903 } else if (config.networkId != INVALID_NETWORK_ID) { 904 if (mSelectedAccessPoint != null) { 905 mWifiManager.save(config, mSaveListener); 906 } 907 } else { 908 if (configController.isEdit()) { 909 mWifiManager.save(config, mSaveListener); 910 } else { 911 connect(config); 912 } 913 } 914 915 if (mWifiManager.isWifiEnabled()) { 916 mScanner.resume(); 917 } 918 updateAccessPoints(); 919 } 920 921 /* package */ void forget() { 922 if (mSelectedAccessPoint.networkId == INVALID_NETWORK_ID) { 923 // Should not happen, but a monkey seems to trigger it 924 Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig()); 925 return; 926 } 927 928 mWifiManager.forget(mSelectedAccessPoint.networkId, mForgetListener); 929 930 if (mWifiManager.isWifiEnabled()) { 931 mScanner.resume(); 932 } 933 updateAccessPoints(); 934 935 // We need to rename/replace "Next" button in wifi setup context. 936 changeNextButtonState(false); 937 } 938 939 protected void connect(final WifiConfiguration config) { 940 mWifiManager.connect(config, mConnectListener); 941 } 942 943 protected void connect(final int networkId) { 944 mWifiManager.connect(networkId, mConnectListener); 945 } 946 947 /** 948 * Refreshes acccess points and ask Wifi module to scan networks again. 949 */ 950 /* package */ void refreshAccessPoints() { 951 if (mWifiManager.isWifiEnabled()) { 952 mScanner.resume(); 953 } 954 955 getPreferenceScreen().removeAll(); 956 } 957 958 /** 959 * Called when "add network" button is pressed. 960 */ 961 /* package */ void onAddNetworkPressed() { 962 // No exact access point is selected. 963 mSelectedAccessPoint = null; 964 showDialog(null, true); 965 } 966 967 /* package */ int getAccessPointsCount() { 968 final boolean wifiIsEnabled = mWifiManager.isWifiEnabled(); 969 if (wifiIsEnabled) { 970 return getPreferenceScreen().getPreferenceCount(); 971 } else { 972 return 0; 973 } 974 } 975 976 /** 977 * Requests wifi module to pause wifi scan. May be ignored when the module is disabled. 978 */ 979 /* package */ void pauseWifiScan() { 980 if (mWifiManager.isWifiEnabled()) { 981 mScanner.pause(); 982 } 983 } 984 985 /** 986 * Requests wifi module to resume wifi scan. May be ignored when the module is disabled. 987 */ 988 /* package */ void resumeWifiScan() { 989 if (mWifiManager.isWifiEnabled()) { 990 mScanner.resume(); 991 } 992 } 993 994 @Override 995 protected int getHelpResource() { 996 return R.string.help_url_wifi; 997 } 998 999 public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = 1000 new BaseSearchIndexProvider() { 1001 @Override 1002 public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) { 1003 final List<SearchIndexableRaw> result = new ArrayList<SearchIndexableRaw>(); 1004 final Resources res = context.getResources(); 1005 1006 // Add fragment title 1007 SearchIndexableRaw data = new SearchIndexableRaw(context); 1008 data.title = res.getString(R.string.wifi_settings); 1009 data.screenTitle = res.getString(R.string.wifi_settings); 1010 data.keywords = res.getString(R.string.keywords_wifi); 1011 result.add(data); 1012 1013 // Add available Wi-Fi access points 1014 WifiManager wifiManager = 1015 (WifiManager) context.getSystemService(Context.WIFI_SERVICE); 1016 final Collection<AccessPoint> accessPoints = 1017 constructAccessPoints(context, wifiManager, null, null); 1018 for (AccessPoint accessPoint : accessPoints) { 1019 // We are indexing only the saved Wi-Fi networks. 1020 if (accessPoint.getConfig() == null) continue; 1021 data = new SearchIndexableRaw(context); 1022 data.title = accessPoint.getTitle().toString(); 1023 data.screenTitle = res.getString(R.string.wifi_settings); 1024 data.enabled = enabled; 1025 result.add(data); 1026 } 1027 1028 return result; 1029 } 1030 }; 1031} 1032