WifiSettings.java revision 5de33f402a9117fbabbde5d04bf1016be5f9f126
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.AlertDialog; 24import android.app.AppGlobals; 25import android.app.Dialog; 26import android.app.admin.DeviceAdminInfo; 27import android.app.admin.DevicePolicyManager; 28import android.app.admin.DevicePolicyManagerInternal; 29import android.content.ContentResolver; 30import android.content.Context; 31import android.content.DialogInterface; 32import android.content.Intent; 33import android.content.pm.ApplicationInfo; 34import android.content.pm.IPackageManager; 35import android.content.pm.PackageManager; 36import android.content.pm.PackageManager.NameNotFoundException; 37import android.content.res.Resources; 38import android.content.res.TypedArray; 39import android.net.ConnectivityManager; 40import android.net.NetworkInfo; 41import android.net.NetworkInfo.State; 42import android.net.wifi.WifiConfiguration; 43import android.net.wifi.WifiManager; 44import android.net.wifi.WpsInfo; 45import android.nfc.NfcAdapter; 46import android.os.Bundle; 47import android.os.HandlerThread; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.UserHandle; 51import android.os.UserManager; 52import android.preference.Preference; 53import android.preference.PreferenceScreen; 54import android.provider.Settings; 55import android.text.Spannable; 56import android.text.style.TextAppearanceSpan; 57import android.util.Log; 58import android.view.ContextMenu; 59import android.view.ContextMenu.ContextMenuInfo; 60import android.view.Gravity; 61import android.view.Menu; 62import android.view.MenuInflater; 63import android.view.MenuItem; 64import android.view.View; 65import android.widget.AdapterView.AdapterContextMenuInfo; 66import android.widget.ProgressBar; 67import android.widget.TextView; 68import android.widget.TextView.BufferType; 69import android.widget.Toast; 70 71import com.android.internal.logging.MetricsLogger; 72import com.android.server.LocalServices; 73import com.android.settings.LinkifyUtils; 74import com.android.settings.R; 75import com.android.settings.RestrictedSettingsFragment; 76import com.android.settings.SettingsActivity; 77import com.android.settings.location.ScanningSettings; 78import com.android.settings.search.BaseSearchIndexProvider; 79import com.android.settings.search.Indexable; 80import com.android.settings.search.SearchIndexableRaw; 81import com.android.settingslib.wifi.AccessPoint; 82import com.android.settingslib.wifi.AccessPoint.AccessPointListener; 83import com.android.settingslib.wifi.WifiTracker; 84 85import java.util.ArrayList; 86import java.util.Collection; 87import java.util.List; 88 89/** 90 * Two types of UI are provided here. 91 * 92 * The first is for "usual Settings", appearing as any other Setup fragment. 93 * 94 * The second is for Setup Wizard, with a simplified interface that hides the action bar 95 * and menus. 96 */ 97public class WifiSettings extends RestrictedSettingsFragment 98 implements DialogInterface.OnClickListener, Indexable, WifiTracker.WifiListener, 99 AccessPointListener { 100 101 private static final String TAG = "WifiSettings"; 102 103 /* package */ static final int MENU_ID_WPS_PBC = Menu.FIRST; 104 private static final int MENU_ID_WPS_PIN = Menu.FIRST + 1; 105 private static final int MENU_ID_SAVED_NETWORK = Menu.FIRST + 2; 106 /* package */ static final int MENU_ID_ADD_NETWORK = Menu.FIRST + 3; 107 private static final int MENU_ID_ADVANCED = Menu.FIRST + 4; 108 private static final int MENU_ID_SCAN = Menu.FIRST + 5; 109 private static final int MENU_ID_CONNECT = Menu.FIRST + 6; 110 private static final int MENU_ID_FORGET = Menu.FIRST + 7; 111 private static final int MENU_ID_MODIFY = Menu.FIRST + 8; 112 private static final int MENU_ID_WRITE_NFC = Menu.FIRST + 9; 113 114 public static final int WIFI_DIALOG_ID = 1; 115 /* package */ static final int WPS_PBC_DIALOG_ID = 2; 116 private static final int WPS_PIN_DIALOG_ID = 3; 117 private static final int WRITE_NFC_DIALOG_ID = 6; 118 119 // Instance state keys 120 private static final String SAVE_DIALOG_EDIT_MODE = "edit_mode"; 121 private static final String SAVE_DIALOG_ACCESS_POINT_STATE = "wifi_ap_state"; 122 private static final String SAVED_WIFI_NFC_DIALOG_STATE = "wifi_nfc_dlg_state"; 123 124 private static boolean savedNetworksExist; 125 126 protected WifiManager mWifiManager; 127 private WifiManager.ActionListener mConnectListener; 128 private WifiManager.ActionListener mSaveListener; 129 private WifiManager.ActionListener mForgetListener; 130 131 private WifiEnabler mWifiEnabler; 132 // An access point being editted is stored here. 133 private AccessPoint mSelectedAccessPoint; 134 135 private WifiDialog mDialog; 136 private WriteWifiConfigToNfcDialog mWifiToNfcDialog; 137 138 private TextView mEmptyView; 139 private ProgressBar mProgressHeader; 140 141 // this boolean extra specifies whether to disable the Next button when not connected. Used by 142 // account creation outside of setup wizard. 143 private static final String EXTRA_ENABLE_NEXT_ON_CONNECT = "wifi_enable_next_on_connect"; 144 // This string extra specifies a network to open the connect dialog on, so the user can enter 145 // network credentials. This is used by quick settings for secured networks. 146 private static final String EXTRA_START_CONNECT_SSID = "wifi_start_connect_ssid"; 147 148 // should Next button only be enabled when we have a connection? 149 private boolean mEnableNextOnConnection; 150 151 // Save the dialog details 152 private boolean mDlgEdit; 153 private AccessPoint mDlgAccessPoint; 154 private Bundle mAccessPointSavedState; 155 private Bundle mWifiNfcDialogSavedState; 156 157 private WifiTracker mWifiTracker; 158 private String mOpenSsid; 159 160 private HandlerThread mBgThread; 161 162 /* End of "used in Wifi Setup context" */ 163 164 public WifiSettings() { 165 super(DISALLOW_CONFIG_WIFI); 166 } 167 168 @Override 169 public void onViewCreated(View view, Bundle savedInstanceState) { 170 super.onViewCreated(view, savedInstanceState); 171 final Activity activity = getActivity(); 172 if (activity != null) { 173 mProgressHeader = (ProgressBar) setPinnedHeaderView(R.layout.wifi_progress_header); 174 } 175 } 176 177 @Override 178 public void onCreate(Bundle icicle) { 179 super.onCreate(icicle); 180 mBgThread = new HandlerThread(TAG, Process.THREAD_PRIORITY_BACKGROUND); 181 mBgThread.start(); 182 } 183 184 @Override 185 public void onDestroy() { 186 mBgThread.quit(); 187 super.onDestroy(); 188 } 189 190 @Override 191 public void onActivityCreated(Bundle savedInstanceState) { 192 super.onActivityCreated(savedInstanceState); 193 194 mWifiTracker = 195 new WifiTracker(getActivity(), this, mBgThread.getLooper(), true, true, false); 196 mWifiManager = mWifiTracker.getManager(); 197 198 mConnectListener = new WifiManager.ActionListener() { 199 @Override 200 public void onSuccess() { 201 } 202 @Override 203 public void onFailure(int reason) { 204 Activity activity = getActivity(); 205 if (activity != null) { 206 Toast.makeText(activity, 207 R.string.wifi_failed_connect_message, 208 Toast.LENGTH_SHORT).show(); 209 } 210 } 211 }; 212 213 mSaveListener = new WifiManager.ActionListener() { 214 @Override 215 public void onSuccess() { 216 } 217 @Override 218 public void onFailure(int reason) { 219 Activity activity = getActivity(); 220 if (activity != null) { 221 Toast.makeText(activity, 222 R.string.wifi_failed_save_message, 223 Toast.LENGTH_SHORT).show(); 224 } 225 } 226 }; 227 228 mForgetListener = new WifiManager.ActionListener() { 229 @Override 230 public void onSuccess() { 231 } 232 @Override 233 public void onFailure(int reason) { 234 Activity activity = getActivity(); 235 if (activity != null) { 236 Toast.makeText(activity, 237 R.string.wifi_failed_forget_message, 238 Toast.LENGTH_SHORT).show(); 239 } 240 } 241 }; 242 243 if (savedInstanceState != null) { 244 mDlgEdit = savedInstanceState.getBoolean(SAVE_DIALOG_EDIT_MODE); 245 if (savedInstanceState.containsKey(SAVE_DIALOG_ACCESS_POINT_STATE)) { 246 mAccessPointSavedState = 247 savedInstanceState.getBundle(SAVE_DIALOG_ACCESS_POINT_STATE); 248 } 249 250 if (savedInstanceState.containsKey(SAVED_WIFI_NFC_DIALOG_STATE)) { 251 mWifiNfcDialogSavedState = 252 savedInstanceState.getBundle(SAVED_WIFI_NFC_DIALOG_STATE); 253 } 254 } 255 256 // if we're supposed to enable/disable the Next button based on our current connection 257 // state, start it off in the right state 258 Intent intent = getActivity().getIntent(); 259 mEnableNextOnConnection = intent.getBooleanExtra(EXTRA_ENABLE_NEXT_ON_CONNECT, false); 260 261 if (mEnableNextOnConnection) { 262 if (hasNextButton()) { 263 final ConnectivityManager connectivity = (ConnectivityManager) 264 getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); 265 if (connectivity != null) { 266 NetworkInfo info = connectivity.getNetworkInfo( 267 ConnectivityManager.TYPE_WIFI); 268 changeNextButtonState(info.isConnected()); 269 } 270 } 271 } 272 273 addPreferencesFromResource(R.xml.wifi_settings); 274 275 mEmptyView = initEmptyView(); 276 registerForContextMenu(getListView()); 277 setHasOptionsMenu(true); 278 279 if (intent.hasExtra(EXTRA_START_CONNECT_SSID)) { 280 mOpenSsid = intent.getStringExtra(EXTRA_START_CONNECT_SSID); 281 onAccessPointsChanged(); 282 } 283 } 284 285 @Override 286 public void onDestroyView() { 287 super.onDestroyView(); 288 289 if (mWifiEnabler != null) { 290 mWifiEnabler.teardownSwitchBar(); 291 } 292 } 293 294 @Override 295 public void onStart() { 296 super.onStart(); 297 298 // On/off switch is hidden for Setup Wizard (returns null) 299 mWifiEnabler = createWifiEnabler(); 300 } 301 302 /** 303 * @return new WifiEnabler or null (as overridden by WifiSettingsForSetupWizard) 304 */ 305 /* package */ WifiEnabler createWifiEnabler() { 306 final SettingsActivity activity = (SettingsActivity) getActivity(); 307 return new WifiEnabler(activity, activity.getSwitchBar()); 308 } 309 310 @Override 311 public void onResume() { 312 final Activity activity = getActivity(); 313 super.onResume(); 314 if (mWifiEnabler != null) { 315 mWifiEnabler.resume(activity); 316 } 317 318 mWifiTracker.startTracking(); 319 } 320 321 @Override 322 public void onPause() { 323 super.onPause(); 324 if (mWifiEnabler != null) { 325 mWifiEnabler.pause(); 326 } 327 328 mWifiTracker.stopTracking(); 329 } 330 331 @Override 332 public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 333 // If the user is not allowed to configure wifi, do not show the menu. 334 if (isUiRestricted()) return; 335 336 addOptionsMenuItems(menu); 337 super.onCreateOptionsMenu(menu, inflater); 338 } 339 340 /** 341 * @param menu 342 */ 343 void addOptionsMenuItems(Menu menu) { 344 final boolean wifiIsEnabled = mWifiTracker.isWifiEnabled(); 345 TypedArray ta = getActivity().getTheme().obtainStyledAttributes( 346 new int[] {R.attr.ic_menu_add, R.attr.ic_wps}); 347 menu.add(Menu.NONE, MENU_ID_ADD_NETWORK, 0, R.string.wifi_add_network) 348 .setIcon(ta.getDrawable(0)) 349 .setEnabled(wifiIsEnabled) 350 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 351 if (savedNetworksExist) { 352 menu.add(Menu.NONE, MENU_ID_SAVED_NETWORK, 0, R.string.wifi_saved_access_points_label) 353 .setIcon(ta.getDrawable(0)) 354 .setEnabled(wifiIsEnabled) 355 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 356 } 357 menu.add(Menu.NONE, MENU_ID_SCAN, 0, R.string.menu_stats_refresh) 358 .setEnabled(wifiIsEnabled) 359 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 360 menu.add(Menu.NONE, MENU_ID_ADVANCED, 0, R.string.wifi_menu_advanced) 361 .setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER); 362 ta.recycle(); 363 } 364 365 @Override 366 protected int getMetricsCategory() { 367 return MetricsLogger.WIFI; 368 } 369 370 @Override 371 public void onSaveInstanceState(Bundle outState) { 372 super.onSaveInstanceState(outState); 373 374 // If the dialog is showing, save its state. 375 if (mDialog != null && mDialog.isShowing()) { 376 outState.putBoolean(SAVE_DIALOG_EDIT_MODE, mDlgEdit); 377 if (mDlgAccessPoint != null) { 378 mAccessPointSavedState = new Bundle(); 379 mDlgAccessPoint.saveWifiState(mAccessPointSavedState); 380 outState.putBundle(SAVE_DIALOG_ACCESS_POINT_STATE, mAccessPointSavedState); 381 } 382 } 383 384 if (mWifiToNfcDialog != null && mWifiToNfcDialog.isShowing()) { 385 Bundle savedState = new Bundle(); 386 mWifiToNfcDialog.saveState(savedState); 387 outState.putBundle(SAVED_WIFI_NFC_DIALOG_STATE, savedState); 388 } 389 } 390 391 @Override 392 public boolean onOptionsItemSelected(MenuItem item) { 393 // If the user is not allowed to configure wifi, do not handle menu selections. 394 if (isUiRestricted()) return false; 395 396 switch (item.getItemId()) { 397 case MENU_ID_WPS_PBC: 398 showDialog(WPS_PBC_DIALOG_ID); 399 return true; 400 /* 401 case MENU_ID_P2P: 402 if (getActivity() instanceof SettingsActivity) { 403 ((SettingsActivity) getActivity()).startPreferencePanel( 404 WifiP2pSettings.class.getCanonicalName(), 405 null, 406 R.string.wifi_p2p_settings_title, null, 407 this, 0); 408 } else { 409 startFragment(this, WifiP2pSettings.class.getCanonicalName(), 410 R.string.wifi_p2p_settings_title, -1, null); 411 } 412 return true; 413 */ 414 case MENU_ID_WPS_PIN: 415 showDialog(WPS_PIN_DIALOG_ID); 416 return true; 417 case MENU_ID_SCAN: 418 MetricsLogger.action(getActivity(), MetricsLogger.ACTION_WIFI_FORCE_SCAN); 419 mWifiTracker.forceScan(); 420 return true; 421 case MENU_ID_ADD_NETWORK: 422 if (mWifiTracker.isWifiEnabled()) { 423 onAddNetworkPressed(); 424 } 425 return true; 426 case MENU_ID_SAVED_NETWORK: 427 if (getActivity() instanceof SettingsActivity) { 428 ((SettingsActivity) getActivity()).startPreferencePanel( 429 SavedAccessPointsWifiSettings.class.getCanonicalName(), null, 430 R.string.wifi_saved_access_points_titlebar, null, this, 0); 431 } else { 432 startFragment(this, SavedAccessPointsWifiSettings.class.getCanonicalName(), 433 R.string.wifi_saved_access_points_titlebar, 434 -1 /* Do not request a result */, null); 435 } 436 return true; 437 case MENU_ID_ADVANCED: 438 if (getActivity() instanceof SettingsActivity) { 439 ((SettingsActivity) getActivity()).startPreferencePanel( 440 AdvancedWifiSettings.class.getCanonicalName(), null, 441 R.string.wifi_advanced_titlebar, null, this, 0); 442 } else { 443 startFragment(this, AdvancedWifiSettings.class.getCanonicalName(), 444 R.string.wifi_advanced_titlebar, -1 /* Do not request a results */, 445 null); 446 } 447 return true; 448 } 449 return super.onOptionsItemSelected(item); 450 } 451 452 @Override 453 public void onCreateContextMenu(ContextMenu menu, View view, ContextMenuInfo info) { 454 if (info instanceof AdapterContextMenuInfo) { 455 Preference preference = (Preference) getListView().getItemAtPosition( 456 ((AdapterContextMenuInfo) info).position); 457 458 if (preference instanceof AccessPointPreference) { 459 mSelectedAccessPoint = ((AccessPointPreference) preference).getAccessPoint(); 460 menu.setHeaderTitle(mSelectedAccessPoint.getSsid()); 461 if (mSelectedAccessPoint.isConnectable()) { 462 menu.add(Menu.NONE, MENU_ID_CONNECT, 0, R.string.wifi_menu_connect); 463 } 464 465 WifiConfiguration config = mSelectedAccessPoint.getConfig(); 466 // Some configs are ineditable 467 if (isEditabilityLockedDown(getActivity(), config)) { 468 return; 469 } 470 471 if (mSelectedAccessPoint.isSaved() || mSelectedAccessPoint.isEphemeral()) { 472 // Allow forgetting a network if either the network is saved or ephemerally 473 // connected. (In the latter case, "forget" blacklists the network so it won't 474 // be used again, ephemerally). 475 menu.add(Menu.NONE, MENU_ID_FORGET, 0, R.string.wifi_menu_forget); 476 } 477 if (mSelectedAccessPoint.isSaved()) { 478 menu.add(Menu.NONE, MENU_ID_MODIFY, 0, R.string.wifi_menu_modify); 479 NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(getActivity()); 480 if (nfcAdapter != null && nfcAdapter.isEnabled() && 481 mSelectedAccessPoint.getSecurity() != AccessPoint.SECURITY_NONE) { 482 // Only allow writing of NFC tags for password-protected networks. 483 menu.add(Menu.NONE, MENU_ID_WRITE_NFC, 0, R.string.wifi_menu_write_to_nfc); 484 } 485 } 486 } 487 } 488 } 489 490 @Override 491 public boolean onContextItemSelected(MenuItem item) { 492 if (mSelectedAccessPoint == null) { 493 return super.onContextItemSelected(item); 494 } 495 switch (item.getItemId()) { 496 case MENU_ID_CONNECT: { 497 if (mSelectedAccessPoint.isSaved()) { 498 connect(mSelectedAccessPoint.getConfig()); 499 } else if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE) { 500 /** Bypass dialog for unsecured networks */ 501 mSelectedAccessPoint.generateOpenNetworkConfig(); 502 connect(mSelectedAccessPoint.getConfig()); 503 } else { 504 showDialog(mSelectedAccessPoint, true); 505 } 506 return true; 507 } 508 case MENU_ID_FORGET: { 509 forget(); 510 return true; 511 } 512 case MENU_ID_MODIFY: { 513 showDialog(mSelectedAccessPoint, true); 514 return true; 515 } 516 case MENU_ID_WRITE_NFC: 517 showDialog(WRITE_NFC_DIALOG_ID); 518 return true; 519 520 } 521 return super.onContextItemSelected(item); 522 } 523 524 @Override 525 public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) { 526 if (preference instanceof AccessPointPreference) { 527 mSelectedAccessPoint = ((AccessPointPreference) preference).getAccessPoint(); 528 /** Bypass dialog for unsecured, unsaved, and inactive networks */ 529 if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE && 530 !mSelectedAccessPoint.isSaved() && !mSelectedAccessPoint.isActive()) { 531 mSelectedAccessPoint.generateOpenNetworkConfig(); 532 if (!savedNetworksExist) { 533 savedNetworksExist = true; 534 getActivity().invalidateOptionsMenu(); 535 } 536 connect(mSelectedAccessPoint.getConfig()); 537 } else { 538 showDialog(mSelectedAccessPoint, false); 539 } 540 } else { 541 return super.onPreferenceTreeClick(screen, preference); 542 } 543 return true; 544 } 545 546 private void showDialog(AccessPoint accessPoint, boolean edit) { 547 if (accessPoint != null) { 548 WifiConfiguration config = accessPoint.getConfig(); 549 if (isEditabilityLockedDown(getActivity(), config) && accessPoint.isActive()) { 550 final int userId = UserHandle.getUserId(config.creatorUid); 551 final PackageManager pm = getActivity().getPackageManager(); 552 final IPackageManager ipm = AppGlobals.getPackageManager(); 553 String appName = pm.getNameForUid(config.creatorUid); 554 try { 555 final ApplicationInfo appInfo = ipm.getApplicationInfo(appName, /* flags */ 0, 556 userId); 557 final CharSequence label = pm.getApplicationLabel(appInfo); 558 if (label != null) { 559 appName = label.toString(); 560 } 561 } catch (RemoteException e) { 562 // leave appName as packageName 563 } 564 final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); 565 builder.setTitle(accessPoint.getSsid()) 566 .setMessage(getString(R.string.wifi_alert_lockdown_by_device_owner, 567 appName)) 568 .setPositiveButton(android.R.string.ok, null) 569 .show(); 570 return; 571 } 572 } 573 574 if (mDialog != null) { 575 removeDialog(WIFI_DIALOG_ID); 576 mDialog = null; 577 } 578 579 // Save the access point and edit mode 580 mDlgAccessPoint = accessPoint; 581 mDlgEdit = edit; 582 583 showDialog(WIFI_DIALOG_ID); 584 } 585 586 @Override 587 public Dialog onCreateDialog(int dialogId) { 588 switch (dialogId) { 589 case WIFI_DIALOG_ID: 590 AccessPoint ap = mDlgAccessPoint; // For manual launch 591 if (ap == null) { // For re-launch from saved state 592 if (mAccessPointSavedState != null) { 593 ap = new AccessPoint(getActivity(), mAccessPointSavedState); 594 // For repeated orientation changes 595 mDlgAccessPoint = ap; 596 // Reset the saved access point data 597 mAccessPointSavedState = null; 598 } 599 } 600 // If it's null, fine, it's for Add Network 601 mSelectedAccessPoint = ap; 602 final boolean hideForget = (ap == null || isEditabilityLockedDown(getActivity(), 603 ap.getConfig())); 604 mDialog = new WifiDialog(getActivity(), this, ap, mDlgEdit, 605 /* no hide submit/connect */ false, 606 /* hide forget if config locked down */ hideForget); 607 return mDialog; 608 case WPS_PBC_DIALOG_ID: 609 return new WpsDialog(getActivity(), WpsInfo.PBC); 610 case WPS_PIN_DIALOG_ID: 611 return new WpsDialog(getActivity(), WpsInfo.DISPLAY); 612 case WRITE_NFC_DIALOG_ID: 613 if (mSelectedAccessPoint != null) { 614 mWifiToNfcDialog = new WriteWifiConfigToNfcDialog( 615 getActivity(), mSelectedAccessPoint.getConfig().networkId, 616 mSelectedAccessPoint.getSecurity(), 617 mWifiManager); 618 } else if (mWifiNfcDialogSavedState != null) { 619 mWifiToNfcDialog = new WriteWifiConfigToNfcDialog( 620 getActivity(), mWifiNfcDialogSavedState, mWifiManager); 621 } 622 623 return mWifiToNfcDialog; 624 } 625 return super.onCreateDialog(dialogId); 626 } 627 628 /** 629 * Shows the latest access points available with supplemental information like 630 * the strength of network and the security for it. 631 */ 632 @Override 633 public void onAccessPointsChanged() { 634 // Safeguard from some delayed event handling 635 if (getActivity() == null) return; 636 637 if (isUiRestricted()) { 638 addMessagePreference(R.string.wifi_empty_list_user_restricted); 639 return; 640 } 641 final int wifiState = mWifiManager.getWifiState(); 642 643 switch (wifiState) { 644 case WifiManager.WIFI_STATE_ENABLED: 645 // AccessPoints are automatically sorted with TreeSet. 646 final Collection<AccessPoint> accessPoints = 647 mWifiTracker.getAccessPoints(); 648 getPreferenceScreen().removeAll(); 649 650 boolean hasAvailableAccessPoints = false; 651 for (AccessPoint accessPoint : accessPoints) { 652 // Ignore access points that are out of range. 653 if (accessPoint.getLevel() != -1) { 654 hasAvailableAccessPoints = true; 655 AccessPointPreference preference = new AccessPointPreference(accessPoint, 656 getActivity(), false); 657 658 if (mOpenSsid != null && mOpenSsid.equals(accessPoint.getSsid()) 659 && !accessPoint.isSaved() 660 && accessPoint.getSecurity() != AccessPoint.SECURITY_NONE) { 661 onPreferenceTreeClick(getPreferenceScreen(), preference); 662 mOpenSsid = null; 663 } 664 getPreferenceScreen().addPreference(preference); 665 accessPoint.setListener(this); 666 } 667 } 668 if (!hasAvailableAccessPoints) { 669 setProgressBarVisible(true); 670 addMessagePreference(R.string.wifi_empty_list_wifi_on); 671 } else { 672 setProgressBarVisible(false); 673 } 674 break; 675 676 case WifiManager.WIFI_STATE_ENABLING: 677 getPreferenceScreen().removeAll(); 678 setProgressBarVisible(true); 679 break; 680 681 case WifiManager.WIFI_STATE_DISABLING: 682 addMessagePreference(R.string.wifi_stopping); 683 setProgressBarVisible(true); 684 break; 685 686 case WifiManager.WIFI_STATE_DISABLED: 687 setOffMessage(); 688 setProgressBarVisible(false); 689 break; 690 } 691 // Update "Saved Networks" menu option. 692 if (savedNetworksExist != mWifiTracker.doSavedNetworksExist()) { 693 savedNetworksExist = !savedNetworksExist; 694 getActivity().invalidateOptionsMenu(); 695 } 696 } 697 698 protected TextView initEmptyView() { 699 TextView emptyView = (TextView) getActivity().findViewById(android.R.id.empty); 700 emptyView.setGravity(Gravity.START | Gravity.CENTER_VERTICAL); 701 getListView().setEmptyView(emptyView); 702 return emptyView; 703 } 704 705 private void setOffMessage() { 706 if (mEmptyView == null) { 707 return; 708 } 709 710 final CharSequence briefText = getText(R.string.wifi_empty_list_wifi_off); 711 if (isUiRestricted()) { 712 // Show only the brief text if the user is not allowed to configure scanning settings. 713 mEmptyView.setText(briefText, BufferType.SPANNABLE); 714 } else { 715 // Append the description of scanning settings with link. 716 final StringBuilder contentBuilder = new StringBuilder(); 717 contentBuilder.append(briefText); 718 contentBuilder.append("\n\n"); 719 contentBuilder.append(getText(R.string.wifi_scan_notify_text)); 720 LinkifyUtils.linkify(mEmptyView, contentBuilder, new LinkifyUtils.OnClickListener() { 721 @Override 722 public void onClick() { 723 final SettingsActivity activity = 724 (SettingsActivity) WifiSettings.this.getActivity(); 725 activity.startPreferencePanel(ScanningSettings.class.getName(), null, 726 R.string.location_scanning_screen_title, null, null, 0); 727 } 728 }); 729 } 730 // Embolden and enlarge the brief description anyway. 731 Spannable boldSpan = (Spannable) mEmptyView.getText(); 732 boldSpan.setSpan( 733 new TextAppearanceSpan(getActivity(), android.R.style.TextAppearance_Medium), 0, 734 briefText.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 735 getPreferenceScreen().removeAll(); 736 } 737 738 private void addMessagePreference(int messageId) { 739 if (mEmptyView != null) mEmptyView.setText(messageId); 740 getPreferenceScreen().removeAll(); 741 } 742 743 protected void setProgressBarVisible(boolean visible) { 744 if (mProgressHeader != null) { 745 mProgressHeader.setVisibility(visible ? View.VISIBLE : View.GONE); 746 } 747 } 748 749 @Override 750 public void onWifiStateChanged(int state) { 751 Activity activity = getActivity(); 752 if (activity != null) { 753 activity.invalidateOptionsMenu(); 754 } 755 756 switch (state) { 757 case WifiManager.WIFI_STATE_ENABLING: 758 addMessagePreference(R.string.wifi_starting); 759 setProgressBarVisible(true); 760 break; 761 762 case WifiManager.WIFI_STATE_DISABLED: 763 setOffMessage(); 764 setProgressBarVisible(false); 765 break; 766 } 767 } 768 769 @Override 770 public void onConnectedChanged() { 771 changeNextButtonState(mWifiTracker.isConnected()); 772 } 773 774 /** 775 * Renames/replaces "Next" button when appropriate. "Next" button usually exists in 776 * Wifi setup screens, not in usual wifi settings screen. 777 * 778 * @param enabled true when the device is connected to a wifi network. 779 */ 780 private void changeNextButtonState(boolean enabled) { 781 if (mEnableNextOnConnection && hasNextButton()) { 782 getNextButton().setEnabled(enabled); 783 } 784 } 785 786 @Override 787 public void onClick(DialogInterface dialogInterface, int button) { 788 if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) { 789 forget(); 790 } else if (button == WifiDialog.BUTTON_SUBMIT) { 791 if (mDialog != null) { 792 submit(mDialog.getController()); 793 } 794 } 795 } 796 797 /* package */ void submit(WifiConfigController configController) { 798 799 final WifiConfiguration config = configController.getConfig(); 800 801 if (config == null) { 802 if (mSelectedAccessPoint != null 803 && mSelectedAccessPoint.isSaved()) { 804 connect(mSelectedAccessPoint.getConfig()); 805 } 806 } else if (config.networkId != INVALID_NETWORK_ID) { 807 if (mSelectedAccessPoint != null) { 808 mWifiManager.save(config, mSaveListener); 809 } 810 } else { 811 if (configController.isEdit()) { 812 mWifiManager.save(config, mSaveListener); 813 } else { 814 connect(config); 815 } 816 } 817 818 mWifiTracker.resumeScanning(); 819 } 820 821 /* package */ void forget() { 822 MetricsLogger.action(getActivity(), MetricsLogger.ACTION_WIFI_FORGET); 823 if (!mSelectedAccessPoint.isSaved()) { 824 if (mSelectedAccessPoint.getNetworkInfo() != null && 825 mSelectedAccessPoint.getNetworkInfo().getState() != State.DISCONNECTED) { 826 // Network is active but has no network ID - must be ephemeral. 827 mWifiManager.disableEphemeralNetwork( 828 AccessPoint.convertToQuotedString(mSelectedAccessPoint.getSsidStr())); 829 } else { 830 // Should not happen, but a monkey seems to trigger it 831 Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig()); 832 return; 833 } 834 } else { 835 mWifiManager.forget(mSelectedAccessPoint.getConfig().networkId, mForgetListener); 836 } 837 838 mWifiTracker.resumeScanning(); 839 840 // We need to rename/replace "Next" button in wifi setup context. 841 changeNextButtonState(false); 842 } 843 844 protected void connect(final WifiConfiguration config) { 845 MetricsLogger.action(getActivity(), MetricsLogger.ACTION_WIFI_CONNECT); 846 mWifiManager.connect(config, mConnectListener); 847 } 848 849 protected void connect(final int networkId) { 850 MetricsLogger.action(getActivity(), MetricsLogger.ACTION_WIFI_CONNECT); 851 mWifiManager.connect(networkId, mConnectListener); 852 } 853 854 /** 855 * Refreshes acccess points and ask Wifi module to scan networks again. 856 */ 857 /* package */ void refreshAccessPoints() { 858 mWifiTracker.resumeScanning(); 859 860 getPreferenceScreen().removeAll(); 861 } 862 863 /** 864 * Called when "add network" button is pressed. 865 */ 866 /* package */ void onAddNetworkPressed() { 867 MetricsLogger.action(getActivity(), MetricsLogger.ACTION_WIFI_ADD_NETWORK); 868 // No exact access point is selected. 869 mSelectedAccessPoint = null; 870 showDialog(null, true); 871 } 872 873 /* package */ int getAccessPointsCount() { 874 final boolean wifiIsEnabled = mWifiTracker.isWifiEnabled(); 875 if (wifiIsEnabled) { 876 return getPreferenceScreen().getPreferenceCount(); 877 } else { 878 return 0; 879 } 880 } 881 882 /** 883 * Requests wifi module to pause wifi scan. May be ignored when the module is disabled. 884 */ 885 /* package */ void pauseWifiScan() { 886 mWifiTracker.pauseScanning(); 887 } 888 889 /** 890 * Requests wifi module to resume wifi scan. May be ignored when the module is disabled. 891 */ 892 /* package */ void resumeWifiScan() { 893 mWifiTracker.resumeScanning(); 894 } 895 896 @Override 897 protected int getHelpResource() { 898 return R.string.help_url_wifi; 899 } 900 901 @Override 902 public void onAccessPointChanged(AccessPoint accessPoint) { 903 ((AccessPointPreference) accessPoint.getTag()).refresh(); 904 } 905 906 @Override 907 public void onLevelChanged(AccessPoint accessPoint) { 908 ((AccessPointPreference) accessPoint.getTag()).onLevelChanged(); 909 } 910 911 public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = 912 new BaseSearchIndexProvider() { 913 @Override 914 public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) { 915 final List<SearchIndexableRaw> result = new ArrayList<SearchIndexableRaw>(); 916 final Resources res = context.getResources(); 917 918 // Add fragment title 919 SearchIndexableRaw data = new SearchIndexableRaw(context); 920 data.title = res.getString(R.string.wifi_settings); 921 data.screenTitle = res.getString(R.string.wifi_settings); 922 data.keywords = res.getString(R.string.keywords_wifi); 923 result.add(data); 924 925 // Add saved Wi-Fi access points 926 final Collection<AccessPoint> accessPoints = 927 WifiTracker.getCurrentAccessPoints(context, true, false, false); 928 for (AccessPoint accessPoint : accessPoints) { 929 data = new SearchIndexableRaw(context); 930 data.title = accessPoint.getSsidStr(); 931 data.screenTitle = res.getString(R.string.wifi_settings); 932 data.enabled = enabled; 933 result.add(data); 934 } 935 936 return result; 937 } 938 }; 939 940 /** 941 * Returns true if the config is not editable through Settings. 942 * @param context Context of caller 943 * @param config The WiFi config. 944 * @return true if the config is not editable through Settings. 945 */ 946 static boolean isEditabilityLockedDown(Context context, WifiConfiguration config) { 947 return !canModifyNetwork(context, config); 948 } 949 950 /** 951 * This method is a stripped version of WifiConfigStore.canModifyNetwork. 952 * TODO: refactor to have only one method. 953 * @param context Context of caller 954 * @param config The WiFi config. 955 * @return true if Settings can modify the config. 956 */ 957 static boolean canModifyNetwork(Context context, WifiConfiguration config) { 958 if (config == null) { 959 return true; 960 } 961 962 final DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService( 963 Context.DEVICE_POLICY_SERVICE); 964 965 // Check if device has DPM capability. If it has and dpm is still null, then we 966 // treat this case with suspicion and bail out. 967 final PackageManager pm = context.getPackageManager(); 968 if (pm.hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN) && dpm == null) { 969 return false; 970 } 971 972 boolean isConfigEligibleForLockdown = false; 973 if (dpm != null) { 974 final String deviceOwnerPackageName = dpm.getDeviceOwner(); 975 if (deviceOwnerPackageName != null) { 976 try { 977 final int deviceOwnerUid = pm.getPackageUid(deviceOwnerPackageName, 978 UserHandle.USER_OWNER); 979 isConfigEligibleForLockdown = deviceOwnerUid == config.creatorUid; 980 } catch (NameNotFoundException e) { 981 // don't care 982 } 983 } 984 } 985 if (!isConfigEligibleForLockdown) { 986 return true; 987 } 988 989 final ContentResolver resolver = context.getContentResolver(); 990 final boolean isLockdownFeatureEnabled = Settings.Global.getInt(resolver, 991 Settings.Global.WIFI_DEVICE_OWNER_CONFIGS_LOCKDOWN, 0) != 0; 992 return !isLockdownFeatureEnabled; 993 } 994 995} 996