WifiSettings.java revision dee5b268925641c2e8f6280ce817fafa7e76d953
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; 20 21import com.android.settings.ProgressCategoryBase; 22import com.android.settings.R; 23import com.android.settings.SettingsPreferenceFragment; 24 25import android.app.Activity; 26import android.app.AlertDialog; 27import android.content.BroadcastReceiver; 28import android.content.Context; 29import android.content.DialogInterface; 30import android.content.Intent; 31import android.content.IntentFilter; 32import android.net.ConnectivityManager; 33import android.net.NetworkInfo; 34import android.net.NetworkInfo.DetailedState; 35import android.net.wifi.ScanResult; 36import android.net.wifi.SupplicantState; 37import android.net.wifi.WifiConfiguration; 38import android.net.wifi.WifiInfo; 39import android.net.wifi.WifiManager; 40import android.net.wifi.WpsResult; 41import android.net.wifi.WifiConfiguration.KeyMgmt; 42import android.net.wifi.WpsConfiguration; 43import android.os.Bundle; 44import android.os.Handler; 45import android.os.Message; 46import android.preference.CheckBoxPreference; 47import android.preference.Preference; 48import android.preference.PreferenceActivity; 49import android.preference.PreferenceScreen; 50import android.provider.Settings.Secure; 51import android.security.Credentials; 52import android.security.KeyStore; 53import android.view.ContextMenu; 54import android.view.LayoutInflater; 55import android.view.Menu; 56import android.view.MenuInflater; 57import android.view.MenuItem; 58import android.view.View; 59import android.view.ViewGroup; 60import android.view.ContextMenu.ContextMenuInfo; 61import android.widget.Toast; 62import android.widget.AdapterView.AdapterContextMenuInfo; 63 64import java.util.ArrayList; 65import java.util.Collection; 66import java.util.List; 67import java.util.concurrent.atomic.AtomicBoolean; 68 69/** 70 * This currently provides three types of UI. 71 * 72 * Two are for phones with relatively small screens: "for SetupWizard" and "for usual Settings". 73 * Users just need to launch WifiSettings Activity as usual. The request will be appropriately 74 * handled by ActivityManager, and they will have appropriate look-and-feel with this fragment. 75 * 76 * Third type is for Setup Wizard with X-Large, landscape UI. Users need to launch 77 * {@link WifiSettingsForSetupWizardXL} Activity, which contains this fragment but also has 78 * other decorations specific to that screen. 79 */ 80public class WifiSettings extends SettingsPreferenceFragment 81 implements DialogInterface.OnClickListener { 82 private static final int MENU_ID_SCAN = Menu.FIRST; 83 private static final int MENU_ID_ADVANCED = Menu.FIRST + 1; 84 private static final int MENU_ID_CONNECT = Menu.FIRST + 2; 85 private static final int MENU_ID_FORGET = Menu.FIRST + 3; 86 private static final int MENU_ID_MODIFY = Menu.FIRST + 4; 87 88 private final IntentFilter mFilter; 89 private final BroadcastReceiver mReceiver; 90 private final Scanner mScanner; 91 92 private WifiManager mWifiManager; 93 private WifiEnabler mWifiEnabler; 94 private CheckBoxPreference mNotifyOpenNetworks; 95 private ProgressCategoryBase mAccessPoints; 96 private Preference mAddNetwork; 97 // An access point being editted is stored here. 98 private AccessPoint mSelectedAccessPoint; 99 private boolean mEdit; 100 101 private DetailedState mLastState; 102 private WifiInfo mLastInfo; 103 104 private AtomicBoolean mConnected = new AtomicBoolean(false); 105 106 private int mKeyStoreNetworkId = INVALID_NETWORK_ID; 107 108 private WifiDialog mDialog; 109 110 /* Used in Wifi Setup context */ 111 112 // this boolean extra specifies whether to disable the Next button when not connected 113 private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect"; 114 115 // should Next button only be enabled when we have a connection? 116 private boolean mEnableNextOnConnection; 117 private boolean mInXlSetupWizard; 118 119 /* End of "used in Wifi Setup context" */ 120 121 public WifiSettings() { 122 mFilter = new IntentFilter(); 123 mFilter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION); 124 mFilter.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 125 mFilter.addAction(WifiManager.NETWORK_IDS_CHANGED_ACTION); 126 mFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION); 127 mFilter.addAction(WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION); 128 mFilter.addAction(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 129 mFilter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION); 130 mFilter.addAction(WifiManager.RSSI_CHANGED_ACTION); 131 132 mReceiver = new BroadcastReceiver() { 133 @Override 134 public void onReceive(Context context, Intent intent) { 135 handleEvent(intent); 136 } 137 }; 138 139 mScanner = new Scanner(); 140 } 141 142 @Override 143 public void onAttach(Activity activity) { 144 super.onAttach(activity); 145 146 mInXlSetupWizard = (activity instanceof WifiSettingsForSetupWizardXL); 147 } 148 149 @Override 150 public View onCreateView(LayoutInflater inflater, ViewGroup container, 151 Bundle savedInstanceState) { 152 if (mInXlSetupWizard) { 153 return inflater.inflate(R.layout.custom_preference_list_fragment, container, false); 154 } else { 155 return super.onCreateView(inflater, container, savedInstanceState); 156 } 157 } 158 159 @Override 160 public void onActivityCreated(Bundle savedInstanceState) { 161 // We don't call super.onActivityCreated() here, since it assumes we already set up 162 // Preference (probably in onCreate()), while WifiSettings exceptionally set it up in 163 // this method. 164 165 mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE); 166 167 final Activity activity = getActivity(); 168 final Intent intent = activity.getIntent(); 169 170 // if we're supposed to enable/disable the Next button based on our current connection 171 // state, start it off in the right state 172 mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false); 173 174 // Avoid re-adding on returning from an overlapping activity/fragment. 175 if (getPreferenceScreen() == null || getPreferenceScreen().getPreferenceCount() < 2) { 176 if (mEnableNextOnConnection) { 177 if (hasNextButton()) { 178 final ConnectivityManager connectivity = (ConnectivityManager) 179 getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); 180 if (connectivity != null) { 181 NetworkInfo info = connectivity.getNetworkInfo( 182 ConnectivityManager.TYPE_WIFI); 183 changeNextButtonState(info.isConnected()); 184 } 185 } 186 } 187 188 if (mInXlSetupWizard) { 189 addPreferencesFromResource(R.xml.wifi_access_points_for_wifi_setup_xl); 190 } else if (intent.getBooleanExtra("only_access_points", false)) { 191 addPreferencesFromResource(R.xml.wifi_access_points); 192 } else { 193 addPreferencesFromResource(R.xml.wifi_settings); 194 mWifiEnabler = new WifiEnabler(activity, 195 (CheckBoxPreference) findPreference("enable_wifi")); 196 mNotifyOpenNetworks = 197 (CheckBoxPreference) findPreference("notify_open_networks"); 198 mNotifyOpenNetworks.setChecked(Secure.getInt(getContentResolver(), 199 Secure.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON, 0) == 1); 200 } 201 // This may be either ProgressCategory or AccessPointCategoryForXL. 202 final ProgressCategoryBase preference = 203 (ProgressCategoryBase) findPreference("access_points"); 204 mAccessPoints = preference; 205 mAccessPoints.setOrderingAsAdded(false); 206 mAddNetwork = findPreference("add_network"); 207 208 registerForContextMenu(getListView()); 209 setHasOptionsMenu(true); 210 } 211 212 // After confirming PreferenceScreen is available, we call super. 213 super.onActivityCreated(savedInstanceState); 214 215 } 216 217 @Override 218 public void onResume() { 219 super.onResume(); 220 if (mWifiEnabler != null) { 221 mWifiEnabler.resume(); 222 } 223 getActivity().registerReceiver(mReceiver, mFilter); 224 if (mKeyStoreNetworkId != INVALID_NETWORK_ID && 225 KeyStore.getInstance().test() == KeyStore.NO_ERROR) { 226 mWifiManager.connectNetwork(mKeyStoreNetworkId); 227 } 228 mKeyStoreNetworkId = INVALID_NETWORK_ID; 229 updateAccessPoints(); 230 } 231 232 @Override 233 public void onPause() { 234 super.onPause(); 235 if (mWifiEnabler != null) { 236 mWifiEnabler.pause(); 237 } 238 getActivity().unregisterReceiver(mReceiver); 239 mScanner.pause(); 240 if (mDialog != null) { 241 mDialog.dismiss(); 242 mDialog = null; 243 } 244 } 245 246 @Override 247 public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 248 // We don't want menus in Setup Wizard XL. 249 if (!mInXlSetupWizard) { 250 menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.wifi_menu_scan) 251 .setIcon(R.drawable.ic_menu_scan_network); 252 menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced) 253 .setIcon(android.R.drawable.ic_menu_manage); 254 } 255 super.onCreateOptionsMenu(menu, inflater); 256 } 257 258 @Override 259 public boolean onOptionsItemSelected(MenuItem item) { 260 switch (item.getItemId()) { 261 case MENU_ID_SCAN: 262 if (mWifiManager.isWifiEnabled()) { 263 mScanner.forceScan(); 264 } 265 return true; 266 case MENU_ID_ADVANCED: 267 startFragment(this, AdvancedSettings.class.getCanonicalName(), -1, null); 268 return true; 269 } 270 return super.onOptionsItemSelected(item); 271 } 272 273 @Override 274 public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) { 275 if (info instanceof AdapterContextMenuInfo) { 276 Preference preference = (Preference) getListView().getItemAtPosition( 277 ((AdapterContextMenuInfo) info).position); 278 279 if (preference instanceof AccessPoint) { 280 mSelectedAccessPoint = (AccessPoint) preference; 281 menu.setHeaderTitle(mSelectedAccessPoint.ssid); 282 if (mSelectedAccessPoint.getLevel() != -1 283 && mSelectedAccessPoint.getState() == null) { 284 menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect); 285 } 286 if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) { 287 menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget); 288 menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify); 289 } 290 } 291 } 292 } 293 294 @Override 295 public boolean onContextItemSelected(MenuItem item) { 296 if (mSelectedAccessPoint == null) { 297 return super.onContextItemSelected(item); 298 } 299 switch (item.getItemId()) { 300 case MENU_ID_CONNECT: { 301 if (mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) { 302 if (!requireKeyStore(mSelectedAccessPoint.getConfig())) { 303 mWifiManager.connectNetwork(mSelectedAccessPoint.networkId); 304 } 305 } else if (mSelectedAccessPoint.security == AccessPoint.SECURITY_NONE) { 306 // Shortcut for open networks. 307 WifiConfiguration config = new WifiConfiguration(); 308 config.SSID = AccessPoint.convertToQuotedString(mSelectedAccessPoint.ssid); 309 config.allowedKeyManagement.set(KeyMgmt.NONE); 310 mWifiManager.connectNetwork(config); 311 } else { 312 showConfigUi(mSelectedAccessPoint, true); 313 } 314 return true; 315 } 316 case MENU_ID_FORGET: { 317 mWifiManager.forgetNetwork(mSelectedAccessPoint.networkId); 318 return true; 319 } 320 case MENU_ID_MODIFY: { 321 showConfigUi(mSelectedAccessPoint, true); 322 return true; 323 } 324 } 325 return super.onContextItemSelected(item); 326 } 327 328 @Override 329 public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) { 330 if (preference instanceof AccessPoint) { 331 mSelectedAccessPoint = (AccessPoint) preference; 332 showConfigUi(mSelectedAccessPoint, false); 333 } else if (preference == mAddNetwork) { 334 onAddNetworkPressed(); 335 } else if (preference == mNotifyOpenNetworks) { 336 Secure.putInt(getContentResolver(), 337 Secure.WIFI_NETWORKS_AVAILABLE_NOTIFICATION_ON, 338 mNotifyOpenNetworks.isChecked() ? 1 : 0); 339 } else { 340 return super.onPreferenceTreeClick(screen, preference); 341 } 342 return true; 343 } 344 345 /** 346 * Shows an appropriate Wifi configuration component. 347 * Called when a user clicks "Add network" preference or one of available networks is selected. 348 */ 349 private void showConfigUi(AccessPoint accessPoint, boolean edit) { 350 mEdit = edit; 351 if (mInXlSetupWizard) { 352 ((WifiSettingsForSetupWizardXL)getActivity()).showConfigUi(accessPoint, edit); 353 } else { 354 showDialog(accessPoint, edit); 355 } 356 } 357 358 private void showDialog(AccessPoint accessPoint, boolean edit) { 359 if (mDialog != null) { 360 mDialog.dismiss(); 361 } 362 mDialog = new WifiDialog(getActivity(), this, accessPoint, edit); 363 mDialog.show(); 364 } 365 366 private boolean requireKeyStore(WifiConfiguration config) { 367 if (WifiConfigController.requireKeyStore(config) && 368 KeyStore.getInstance().test() != KeyStore.NO_ERROR) { 369 mKeyStoreNetworkId = config.networkId; 370 Credentials.getInstance().unlock(getActivity()); 371 return true; 372 } 373 return false; 374 } 375 376 /** 377 * Shows the latest access points available with supplimental information like 378 * the strength of network and the security for it. 379 */ 380 private void updateAccessPoints() { 381 mAccessPoints.removeAll(); 382 383 // AccessPoints are automatically sorted with TreeSet. 384 final Collection<AccessPoint> accessPoints = constructAccessPoints(); 385 if (mInXlSetupWizard) { 386 ((WifiSettingsForSetupWizardXL)getActivity()).onAccessPointsUpdated( 387 mAccessPoints, accessPoints); 388 } else { 389 for (AccessPoint accessPoint : accessPoints) { 390 mAccessPoints.addPreference(accessPoint); 391 } 392 } 393 } 394 395 private Collection<AccessPoint> constructAccessPoints() { 396 Collection<AccessPoint> accessPoints = new ArrayList<AccessPoint>(); 397 398 final List<WifiConfiguration> configs = mWifiManager.getConfiguredNetworks(); 399 if (configs != null) { 400 for (WifiConfiguration config : configs) { 401 AccessPoint accessPoint = new AccessPoint(getActivity(), config); 402 accessPoint.update(mLastInfo, mLastState); 403 accessPoints.add(accessPoint); 404 } 405 } 406 407 final List<ScanResult> results = mWifiManager.getScanResults(); 408 if (results != null) { 409 for (ScanResult result : results) { 410 // Ignore hidden and ad-hoc networks. 411 if (result.SSID == null || result.SSID.length() == 0 || 412 result.capabilities.contains("[IBSS]")) { 413 continue; 414 } 415 416 boolean found = false; 417 for (AccessPoint accessPoint : accessPoints) { 418 if (accessPoint.update(result)) { 419 found = true; 420 } 421 } 422 if (!found) { 423 accessPoints.add(new AccessPoint(getActivity(), result)); 424 } 425 } 426 } 427 428 return accessPoints; 429 } 430 431 private void handleEvent(Intent intent) { 432 String action = intent.getAction(); 433 if (WifiManager.WIFI_STATE_CHANGED_ACTION.equals(action)) { 434 updateWifiState(intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE, 435 WifiManager.WIFI_STATE_UNKNOWN)); 436 } else if (WifiManager.SCAN_RESULTS_AVAILABLE_ACTION.equals(action) || 437 WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION.equals(action) || 438 WifiManager.LINK_CONFIGURATION_CHANGED_ACTION.equals(action)) { 439 updateAccessPoints(); 440 } else if (WifiManager.SUPPLICANT_STATE_CHANGED_ACTION.equals(action)) { 441 //Ignore supplicant state changes when network is connected 442 //TODO: we should deprecate SUPPLICANT_STATE_CHANGED_ACTION and 443 //introduce a broadcast that combines the supplicant and network 444 //network state change events so the apps dont have to worry about 445 //ignoring supplicant state change when network is connected 446 //to get more fine grained information. 447 if (!mConnected.get()) { 448 updateConnectionState(WifiInfo.getDetailedStateOf((SupplicantState) 449 intent.getParcelableExtra(WifiManager.EXTRA_NEW_STATE))); 450 } 451 452 if (mInXlSetupWizard) { 453 ((WifiSettingsForSetupWizardXL)getActivity()).onSupplicantStateChanged(intent); 454 } 455 } else if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals(action)) { 456 NetworkInfo info = (NetworkInfo) intent.getParcelableExtra( 457 WifiManager.EXTRA_NETWORK_INFO); 458 mConnected.set(info.isConnected()); 459 changeNextButtonState(info.isConnected()); 460 updateConnectionState(info.getDetailedState()); 461 } else if (WifiManager.RSSI_CHANGED_ACTION.equals(action)) { 462 updateConnectionState(null); 463 } 464 } 465 466 private void updateConnectionState(DetailedState state) { 467 /* sticky broadcasts can call this when wifi is disabled */ 468 if (!mWifiManager.isWifiEnabled()) { 469 mScanner.pause(); 470 return; 471 } 472 473 if (state == DetailedState.OBTAINING_IPADDR) { 474 mScanner.pause(); 475 } else { 476 mScanner.resume(); 477 } 478 479 mLastInfo = mWifiManager.getConnectionInfo(); 480 if (state != null) { 481 mLastState = state; 482 } 483 484 for (int i = mAccessPoints.getPreferenceCount() - 1; i >= 0; --i) { 485 // Maybe there's a WifiConfigPreference 486 Preference preference = mAccessPoints.getPreference(i); 487 if (preference instanceof AccessPoint) { 488 final AccessPoint accessPoint = (AccessPoint) preference; 489 accessPoint.update(mLastInfo, mLastState); 490 } 491 } 492 493 if (mInXlSetupWizard) { 494 ((WifiSettingsForSetupWizardXL)getActivity()).updateConnectionState(mLastState); 495 } 496 } 497 498 private void updateWifiState(int state) { 499 if (state == WifiManager.WIFI_STATE_ENABLED) { 500 mScanner.resume(); 501 } else { 502 mScanner.pause(); 503 mAccessPoints.removeAll(); 504 } 505 } 506 507 private class Scanner extends Handler { 508 private int mRetry = 0; 509 510 void resume() { 511 if (!hasMessages(0)) { 512 sendEmptyMessage(0); 513 } 514 } 515 516 void forceScan() { 517 sendEmptyMessage(0); 518 } 519 520 void pause() { 521 mRetry = 0; 522 mAccessPoints.setProgress(false); 523 removeMessages(0); 524 } 525 526 @Override 527 public void handleMessage(Message message) { 528 if (mWifiManager.startScanActive()) { 529 mRetry = 0; 530 } else if (++mRetry >= 3) { 531 mRetry = 0; 532 Toast.makeText(getActivity(), R.string.wifi_fail_to_scan, 533 Toast.LENGTH_LONG).show(); 534 return; 535 } 536 mAccessPoints.setProgress(mRetry != 0); 537 // Combo scans can take 5-6s to complete. Increase interval to 10s. 538 sendEmptyMessageDelayed(0, 10000); 539 } 540 } 541 542 /** 543 * Renames/replaces "Next" button when appropriate. "Next" button usually exists in 544 * Wifi setup screens, not in usual wifi settings screen. 545 * 546 * @param connected true when the device is connected to a wifi network. 547 */ 548 private void changeNextButtonState(boolean connected) { 549 if (mInXlSetupWizard) { 550 ((WifiSettingsForSetupWizardXL)getActivity()).changeNextButtonState(connected); 551 } else if (mEnableNextOnConnection && hasNextButton()) { 552 getNextButton().setEnabled(connected); 553 } 554 } 555 556 public void onClick(DialogInterface dialogInterface, int button) { 557 if (mInXlSetupWizard) { 558 if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) { 559 ((WifiSettingsForSetupWizardXL)getActivity()).onForgetButtonPressed(); 560 } else if (button == WifiDialog.BUTTON_SUBMIT) { 561 ((WifiSettingsForSetupWizardXL)getActivity()).onConnectButtonPressed(); 562 } 563 } else { 564 if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) { 565 forget(); 566 } else if (button == WifiDialog.BUTTON_SUBMIT) { 567 submit(mDialog.getController()); 568 } 569 } 570 571 } 572 573 /* package */ void submit(WifiConfigController configController) { 574 int networkSetup = configController.chosenNetworkSetupMethod(); 575 switch(networkSetup) { 576 case WifiConfigController.WPS_PBC: 577 case WifiConfigController.WPS_PIN_FROM_ACCESS_POINT: 578 case WifiConfigController.WPS_PIN_FROM_DEVICE: 579 WpsResult result = mWifiManager.startWps(configController.getWpsConfig()); 580 AlertDialog.Builder dialog = new AlertDialog.Builder(getActivity()) 581 .setTitle(R.string.wifi_wps_setup_title) 582 .setPositiveButton(android.R.string.ok, null); 583 switch (result.status) { 584 case FAILURE: 585 dialog.setMessage(R.string.wifi_wps_failed); 586 dialog.show(); 587 break; 588 case IN_PROGRESS: 589 dialog.setMessage(R.string.wifi_wps_in_progress); 590 dialog.show(); 591 break; 592 default: 593 if (networkSetup == WifiConfigController.WPS_PIN_FROM_DEVICE) { 594 dialog.setMessage(getResources().getString(R.string.wifi_wps_pin_output, 595 result.pin)); 596 dialog.show(); 597 } 598 break; 599 } 600 break; 601 case WifiConfigController.MANUAL: 602 final WifiConfiguration config = configController.getConfig(); 603 604 if (config == null) { 605 if (mSelectedAccessPoint != null 606 && !requireKeyStore(mSelectedAccessPoint.getConfig()) 607 && mSelectedAccessPoint.networkId != INVALID_NETWORK_ID) { 608 mWifiManager.connectNetwork(mSelectedAccessPoint.networkId); 609 } 610 } else if (config.networkId != INVALID_NETWORK_ID) { 611 if (mSelectedAccessPoint != null) { 612 saveNetwork(config); 613 } 614 } else { 615 if (configController.isEdit() || requireKeyStore(config)) { 616 saveNetwork(config); 617 } else { 618 mWifiManager.connectNetwork(config); 619 } 620 } 621 break; 622 } 623 624 if (mWifiManager.isWifiEnabled()) { 625 mScanner.resume(); 626 } 627 updateAccessPoints(); 628 } 629 630 private void saveNetwork(WifiConfiguration config) { 631 if (mInXlSetupWizard) { 632 ((WifiSettingsForSetupWizardXL)getActivity()).onSaveNetwork(config); 633 } else { 634 mWifiManager.saveNetwork(config); 635 } 636 } 637 638 /* package */ void forget() { 639 mWifiManager.forgetNetwork(mSelectedAccessPoint.networkId); 640 641 if (mWifiManager.isWifiEnabled()) { 642 mScanner.resume(); 643 } 644 updateAccessPoints(); 645 646 // We need to rename/replace "Next" button in wifi setup context. 647 changeNextButtonState(false); 648 } 649 650 /** 651 * Refreshes acccess points and ask Wifi module to scan networks again. 652 */ 653 /* package */ void refreshAccessPoints() { 654 if (mWifiManager.isWifiEnabled()) { 655 mScanner.resume(); 656 } 657 658 mAccessPoints.removeAll(); 659 } 660 661 /** 662 * Called when "add network" button is pressed. 663 */ 664 /* package */ void onAddNetworkPressed() { 665 // No exact access point is selected. 666 mSelectedAccessPoint = null; 667 showConfigUi(null, true); 668 } 669 670 /* package */ int getAccessPointsCount() { 671 if (mAccessPoints != null) { 672 return mAccessPoints.getPreferenceCount(); 673 } else { 674 return 0; 675 } 676 } 677 678 /** 679 * Requests wifi module to pause wifi scan. May be ignored when the module is disabled. 680 */ 681 /* package */ void pauseWifiScan() { 682 if (mWifiManager.isWifiEnabled()) { 683 mScanner.pause(); 684 } 685 } 686 687 /** 688 * Requests wifi module to resume wifi scan. May be ignored when the module is disabled. 689 */ 690 /* package */ void resumeWifiScan() { 691 if (mWifiManager.isWifiEnabled()) { 692 mScanner.resume(); 693 } 694 } 695} 696