1 /* 2 * Copyright (C) 2009-2014 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 android.bluetooth; 18 19 import android.annotation.SdkConstant; 20 import android.annotation.SdkConstant.SdkConstantType; 21 import android.bluetooth.le.BluetoothLeAdvertiser; 22 import android.bluetooth.le.BluetoothLeScanner; 23 import android.bluetooth.le.ScanCallback; 24 import android.bluetooth.le.ScanFilter; 25 import android.bluetooth.le.ScanRecord; 26 import android.bluetooth.le.ScanResult; 27 import android.bluetooth.le.ScanSettings; 28 import android.content.Context; 29 import android.os.Handler; 30 import android.os.IBinder; 31 import android.os.Looper; 32 import android.os.ParcelUuid; 33 import android.os.RemoteException; 34 import android.os.ServiceManager; 35 import android.util.Log; 36 import android.util.Pair; 37 38 import java.io.IOException; 39 import java.lang.ref.WeakReference; 40 import java.util.ArrayList; 41 import java.util.Arrays; 42 import java.util.Collections; 43 import java.util.HashMap; 44 import java.util.HashSet; 45 import java.util.List; 46 import java.util.Locale; 47 import java.util.Map; 48 import java.util.Set; 49 import java.util.UUID; 50 51 /** 52 * Represents the local device Bluetooth adapter. The {@link BluetoothAdapter} 53 * lets you perform fundamental Bluetooth tasks, such as initiate 54 * device discovery, query a list of bonded (paired) devices, 55 * instantiate a {@link BluetoothDevice} using a known MAC address, and create 56 * a {@link BluetoothServerSocket} to listen for connection requests from other 57 * devices, and start a scan for Bluetooth LE devices. 58 * 59 * <p>To get a {@link BluetoothAdapter} representing the local Bluetooth 60 * adapter, when running on JELLY_BEAN_MR1 and below, call the 61 * static {@link #getDefaultAdapter} method; when running on JELLY_BEAN_MR2 and 62 * higher, retrieve it through 63 * {@link android.content.Context#getSystemService} with 64 * {@link android.content.Context#BLUETOOTH_SERVICE}. 65 * Fundamentally, this is your starting point for all 66 * Bluetooth actions. Once you have the local adapter, you can get a set of 67 * {@link BluetoothDevice} objects representing all paired devices with 68 * {@link #getBondedDevices()}; start device discovery with 69 * {@link #startDiscovery()}; or create a {@link BluetoothServerSocket} to 70 * listen for incoming connection requests with 71 * {@link #listenUsingRfcommWithServiceRecord(String,UUID)}; or start a scan for 72 * Bluetooth LE devices with {@link #startLeScan(LeScanCallback callback)}. 73 * 74 * <p class="note"><strong>Note:</strong> 75 * Most methods require the {@link android.Manifest.permission#BLUETOOTH} 76 * permission and some also require the 77 * {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 78 * 79 * <div class="special reference"> 80 * <h3>Developer Guides</h3> 81 * <p>For more information about using Bluetooth, read the 82 * <a href="{@docRoot}guide/topics/wireless/bluetooth.html">Bluetooth</a> developer guide.</p> 83 * </div> 84 * 85 * {@see BluetoothDevice} 86 * {@see BluetoothServerSocket} 87 */ 88 public final class BluetoothAdapter { 89 private static final String TAG = "BluetoothAdapter"; 90 private static final boolean DBG = true; 91 private static final boolean VDBG = false; 92 93 /** 94 * Sentinel error value for this class. Guaranteed to not equal any other 95 * integer constant in this class. Provided as a convenience for functions 96 * that require a sentinel error value, for example: 97 * <p><code>Intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, 98 * BluetoothAdapter.ERROR)</code> 99 */ 100 public static final int ERROR = Integer.MIN_VALUE; 101 102 /** 103 * Broadcast Action: The state of the local Bluetooth adapter has been 104 * changed. 105 * <p>For example, Bluetooth has been turned on or off. 106 * <p>Always contains the extra fields {@link #EXTRA_STATE} and {@link 107 * #EXTRA_PREVIOUS_STATE} containing the new and old states 108 * respectively. 109 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 110 */ 111 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 112 public static final String ACTION_STATE_CHANGED = 113 "android.bluetooth.adapter.action.STATE_CHANGED"; 114 115 /** 116 * Used as an int extra field in {@link #ACTION_STATE_CHANGED} 117 * intents to request the current power state. Possible values are: 118 * {@link #STATE_OFF}, 119 * {@link #STATE_TURNING_ON}, 120 * {@link #STATE_ON}, 121 * {@link #STATE_TURNING_OFF}, 122 */ 123 public static final String EXTRA_STATE = 124 "android.bluetooth.adapter.extra.STATE"; 125 /** 126 * Used as an int extra field in {@link #ACTION_STATE_CHANGED} 127 * intents to request the previous power state. Possible values are: 128 * {@link #STATE_OFF}, 129 * {@link #STATE_TURNING_ON}, 130 * {@link #STATE_ON}, 131 * {@link #STATE_TURNING_OFF}, 132 */ 133 public static final String EXTRA_PREVIOUS_STATE = 134 "android.bluetooth.adapter.extra.PREVIOUS_STATE"; 135 136 /** 137 * Indicates the local Bluetooth adapter is off. 138 */ 139 public static final int STATE_OFF = 10; 140 /** 141 * Indicates the local Bluetooth adapter is turning on. However local 142 * clients should wait for {@link #STATE_ON} before attempting to 143 * use the adapter. 144 */ 145 public static final int STATE_TURNING_ON = 11; 146 /** 147 * Indicates the local Bluetooth adapter is on, and ready for use. 148 */ 149 public static final int STATE_ON = 12; 150 /** 151 * Indicates the local Bluetooth adapter is turning off. Local clients 152 * should immediately attempt graceful disconnection of any remote links. 153 */ 154 public static final int STATE_TURNING_OFF = 13; 155 156 /** 157 * Activity Action: Show a system activity that requests discoverable mode. 158 * This activity will also request the user to turn on Bluetooth if it 159 * is not currently enabled. 160 * <p>Discoverable mode is equivalent to {@link 161 * #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. It allows remote devices to see 162 * this Bluetooth adapter when they perform a discovery. 163 * <p>For privacy, Android is not discoverable by default. 164 * <p>The sender of this Intent can optionally use extra field {@link 165 * #EXTRA_DISCOVERABLE_DURATION} to request the duration of 166 * discoverability. Currently the default duration is 120 seconds, and 167 * maximum duration is capped at 300 seconds for each request. 168 * <p>Notification of the result of this activity is posted using the 169 * {@link android.app.Activity#onActivityResult} callback. The 170 * <code>resultCode</code> 171 * will be the duration (in seconds) of discoverability or 172 * {@link android.app.Activity#RESULT_CANCELED} if the user rejected 173 * discoverability or an error has occurred. 174 * <p>Applications can also listen for {@link #ACTION_SCAN_MODE_CHANGED} 175 * for global notification whenever the scan mode changes. For example, an 176 * application can be notified when the device has ended discoverability. 177 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 178 */ 179 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 180 public static final String ACTION_REQUEST_DISCOVERABLE = 181 "android.bluetooth.adapter.action.REQUEST_DISCOVERABLE"; 182 183 /** 184 * Used as an optional int extra field in {@link 185 * #ACTION_REQUEST_DISCOVERABLE} intents to request a specific duration 186 * for discoverability in seconds. The current default is 120 seconds, and 187 * requests over 300 seconds will be capped. These values could change. 188 */ 189 public static final String EXTRA_DISCOVERABLE_DURATION = 190 "android.bluetooth.adapter.extra.DISCOVERABLE_DURATION"; 191 192 /** 193 * Activity Action: Show a system activity that allows the user to turn on 194 * Bluetooth. 195 * <p>This system activity will return once Bluetooth has completed turning 196 * on, or the user has decided not to turn Bluetooth on. 197 * <p>Notification of the result of this activity is posted using the 198 * {@link android.app.Activity#onActivityResult} callback. The 199 * <code>resultCode</code> 200 * will be {@link android.app.Activity#RESULT_OK} if Bluetooth has been 201 * turned on or {@link android.app.Activity#RESULT_CANCELED} if the user 202 * has rejected the request or an error has occurred. 203 * <p>Applications can also listen for {@link #ACTION_STATE_CHANGED} 204 * for global notification whenever Bluetooth is turned on or off. 205 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 206 */ 207 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 208 public static final String ACTION_REQUEST_ENABLE = 209 "android.bluetooth.adapter.action.REQUEST_ENABLE"; 210 211 /** 212 * Broadcast Action: Indicates the Bluetooth scan mode of the local Adapter 213 * has changed. 214 * <p>Always contains the extra fields {@link #EXTRA_SCAN_MODE} and {@link 215 * #EXTRA_PREVIOUS_SCAN_MODE} containing the new and old scan modes 216 * respectively. 217 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 218 */ 219 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 220 public static final String ACTION_SCAN_MODE_CHANGED = 221 "android.bluetooth.adapter.action.SCAN_MODE_CHANGED"; 222 223 /** 224 * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED} 225 * intents to request the current scan mode. Possible values are: 226 * {@link #SCAN_MODE_NONE}, 227 * {@link #SCAN_MODE_CONNECTABLE}, 228 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}, 229 */ 230 public static final String EXTRA_SCAN_MODE = "android.bluetooth.adapter.extra.SCAN_MODE"; 231 /** 232 * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED} 233 * intents to request the previous scan mode. Possible values are: 234 * {@link #SCAN_MODE_NONE}, 235 * {@link #SCAN_MODE_CONNECTABLE}, 236 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}, 237 */ 238 public static final String EXTRA_PREVIOUS_SCAN_MODE = 239 "android.bluetooth.adapter.extra.PREVIOUS_SCAN_MODE"; 240 241 /** 242 * Indicates that both inquiry scan and page scan are disabled on the local 243 * Bluetooth adapter. Therefore this device is neither discoverable 244 * nor connectable from remote Bluetooth devices. 245 */ 246 public static final int SCAN_MODE_NONE = 20; 247 /** 248 * Indicates that inquiry scan is disabled, but page scan is enabled on the 249 * local Bluetooth adapter. Therefore this device is not discoverable from 250 * remote Bluetooth devices, but is connectable from remote devices that 251 * have previously discovered this device. 252 */ 253 public static final int SCAN_MODE_CONNECTABLE = 21; 254 /** 255 * Indicates that both inquiry scan and page scan are enabled on the local 256 * Bluetooth adapter. Therefore this device is both discoverable and 257 * connectable from remote Bluetooth devices. 258 */ 259 public static final int SCAN_MODE_CONNECTABLE_DISCOVERABLE = 23; 260 261 /** 262 * Broadcast Action: The local Bluetooth adapter has started the remote 263 * device discovery process. 264 * <p>This usually involves an inquiry scan of about 12 seconds, followed 265 * by a page scan of each new device to retrieve its Bluetooth name. 266 * <p>Register for {@link BluetoothDevice#ACTION_FOUND} to be notified as 267 * remote Bluetooth devices are found. 268 * <p>Device discovery is a heavyweight procedure. New connections to 269 * remote Bluetooth devices should not be attempted while discovery is in 270 * progress, and existing connections will experience limited bandwidth 271 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 272 * discovery. 273 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 274 */ 275 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 276 public static final String ACTION_DISCOVERY_STARTED = 277 "android.bluetooth.adapter.action.DISCOVERY_STARTED"; 278 /** 279 * Broadcast Action: The local Bluetooth adapter has finished the device 280 * discovery process. 281 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 282 */ 283 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 284 public static final String ACTION_DISCOVERY_FINISHED = 285 "android.bluetooth.adapter.action.DISCOVERY_FINISHED"; 286 287 /** 288 * Broadcast Action: The local Bluetooth adapter has changed its friendly 289 * Bluetooth name. 290 * <p>This name is visible to remote Bluetooth devices. 291 * <p>Always contains the extra field {@link #EXTRA_LOCAL_NAME} containing 292 * the name. 293 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 294 */ 295 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 296 public static final String ACTION_LOCAL_NAME_CHANGED = 297 "android.bluetooth.adapter.action.LOCAL_NAME_CHANGED"; 298 /** 299 * Used as a String extra field in {@link #ACTION_LOCAL_NAME_CHANGED} 300 * intents to request the local Bluetooth name. 301 */ 302 public static final String EXTRA_LOCAL_NAME = "android.bluetooth.adapter.extra.LOCAL_NAME"; 303 304 /** 305 * Intent used to broadcast the change in connection state of the local 306 * Bluetooth adapter to a profile of the remote device. When the adapter is 307 * not connected to any profiles of any remote devices and it attempts a 308 * connection to a profile this intent will sent. Once connected, this intent 309 * will not be sent for any more connection attempts to any profiles of any 310 * remote device. When the adapter disconnects from the last profile its 311 * connected to of any remote device, this intent will be sent. 312 * 313 * <p> This intent is useful for applications that are only concerned about 314 * whether the local adapter is connected to any profile of any device and 315 * are not really concerned about which profile. For example, an application 316 * which displays an icon to display whether Bluetooth is connected or not 317 * can use this intent. 318 * 319 * <p>This intent will have 3 extras: 320 * {@link #EXTRA_CONNECTION_STATE} - The current connection state. 321 * {@link #EXTRA_PREVIOUS_CONNECTION_STATE}- The previous connection state. 322 * {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. 323 * 324 * {@link #EXTRA_CONNECTION_STATE} or {@link #EXTRA_PREVIOUS_CONNECTION_STATE} 325 * can be any of {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, 326 * {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}. 327 * 328 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 329 */ 330 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 331 public static final String ACTION_CONNECTION_STATE_CHANGED = 332 "android.bluetooth.adapter.action.CONNECTION_STATE_CHANGED"; 333 334 /** 335 * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED} 336 * 337 * This extra represents the current connection state. 338 */ 339 public static final String EXTRA_CONNECTION_STATE = 340 "android.bluetooth.adapter.extra.CONNECTION_STATE"; 341 342 /** 343 * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED} 344 * 345 * This extra represents the previous connection state. 346 */ 347 public static final String EXTRA_PREVIOUS_CONNECTION_STATE = 348 "android.bluetooth.adapter.extra.PREVIOUS_CONNECTION_STATE"; 349 350 /** The profile is in disconnected state */ 351 public static final int STATE_DISCONNECTED = 0; 352 /** The profile is in connecting state */ 353 public static final int STATE_CONNECTING = 1; 354 /** The profile is in connected state */ 355 public static final int STATE_CONNECTED = 2; 356 /** The profile is in disconnecting state */ 357 public static final int STATE_DISCONNECTING = 3; 358 359 /** @hide */ 360 public static final String BLUETOOTH_MANAGER_SERVICE = "bluetooth_manager"; 361 362 private static final int ADDRESS_LENGTH = 17; 363 364 private static final int CONTROLLER_ENERGY_UPDATE_TIMEOUT_MILLIS = 30; 365 /** @hide */ 366 public static final int ACTIVITY_ENERGY_INFO_CACHED = 0; 367 /** @hide */ 368 public static final int ACTIVITY_ENERGY_INFO_REFRESHED = 1; 369 370 /** 371 * Lazily initialized singleton. Guaranteed final after first object 372 * constructed. 373 */ 374 private static BluetoothAdapter sAdapter; 375 376 private static BluetoothLeScanner sBluetoothLeScanner; 377 private static BluetoothLeAdvertiser sBluetoothLeAdvertiser; 378 379 private final IBluetoothManager mManagerService; 380 private IBluetooth mService; 381 382 private final Object mLock = new Object(); 383 private final Map<LeScanCallback, ScanCallback> mLeScanClients; 384 385 /** 386 * Get a handle to the default local Bluetooth adapter. 387 * <p>Currently Android only supports one Bluetooth adapter, but the API 388 * could be extended to support more. This will always return the default 389 * adapter. 390 * @return the default local adapter, or null if Bluetooth is not supported 391 * on this hardware platform 392 */ 393 public static synchronized BluetoothAdapter getDefaultAdapter() { 394 if (sAdapter == null) { 395 IBinder b = ServiceManager.getService(BLUETOOTH_MANAGER_SERVICE); 396 if (b != null) { 397 IBluetoothManager managerService = IBluetoothManager.Stub.asInterface(b); 398 sAdapter = new BluetoothAdapter(managerService); 399 } else { 400 Log.e(TAG, "Bluetooth binder is null"); 401 } 402 } 403 return sAdapter; 404 } 405 406 /** 407 * Use {@link #getDefaultAdapter} to get the BluetoothAdapter instance. 408 */ 409 BluetoothAdapter(IBluetoothManager managerService) { 410 411 if (managerService == null) { 412 throw new IllegalArgumentException("bluetooth manager service is null"); 413 } 414 try { 415 mService = managerService.registerAdapter(mManagerCallback); 416 } catch (RemoteException e) {Log.e(TAG, "", e);} 417 mManagerService = managerService; 418 mLeScanClients = new HashMap<LeScanCallback, ScanCallback>(); 419 } 420 421 /** 422 * Get a {@link BluetoothDevice} object for the given Bluetooth hardware 423 * address. 424 * <p>Valid Bluetooth hardware addresses must be upper case, in a format 425 * such as "00:11:22:33:AA:BB". The helper {@link #checkBluetoothAddress} is 426 * available to validate a Bluetooth address. 427 * <p>A {@link BluetoothDevice} will always be returned for a valid 428 * hardware address, even if this adapter has never seen that device. 429 * 430 * @param address valid Bluetooth MAC address 431 * @throws IllegalArgumentException if address is invalid 432 */ 433 public BluetoothDevice getRemoteDevice(String address) { 434 return new BluetoothDevice(address); 435 } 436 437 /** 438 * Get a {@link BluetoothDevice} object for the given Bluetooth hardware 439 * address. 440 * <p>Valid Bluetooth hardware addresses must be 6 bytes. This method 441 * expects the address in network byte order (MSB first). 442 * <p>A {@link BluetoothDevice} will always be returned for a valid 443 * hardware address, even if this adapter has never seen that device. 444 * 445 * @param address Bluetooth MAC address (6 bytes) 446 * @throws IllegalArgumentException if address is invalid 447 */ 448 public BluetoothDevice getRemoteDevice(byte[] address) { 449 if (address == null || address.length != 6) { 450 throw new IllegalArgumentException("Bluetooth address must have 6 bytes"); 451 } 452 return new BluetoothDevice(String.format(Locale.US, "%02X:%02X:%02X:%02X:%02X:%02X", 453 address[0], address[1], address[2], address[3], address[4], address[5])); 454 } 455 456 /** 457 * Returns a {@link BluetoothLeAdvertiser} object for Bluetooth LE Advertising operations. 458 * Will return null if Bluetooth is turned off or if Bluetooth LE Advertising is not 459 * supported on this device. 460 * <p> 461 * Use {@link #isMultipleAdvertisementSupported()} to check whether LE Advertising is supported 462 * on this device before calling this method. 463 */ 464 public BluetoothLeAdvertiser getBluetoothLeAdvertiser() { 465 if (getState() != STATE_ON) { 466 return null; 467 } 468 if (!isMultipleAdvertisementSupported()) { 469 return null; 470 } 471 synchronized(mLock) { 472 if (sBluetoothLeAdvertiser == null) { 473 sBluetoothLeAdvertiser = new BluetoothLeAdvertiser(mManagerService); 474 } 475 } 476 return sBluetoothLeAdvertiser; 477 } 478 479 /** 480 * Returns a {@link BluetoothLeScanner} object for Bluetooth LE scan operations. 481 */ 482 public BluetoothLeScanner getBluetoothLeScanner() { 483 if (getState() != STATE_ON) { 484 return null; 485 } 486 synchronized(mLock) { 487 if (sBluetoothLeScanner == null) { 488 sBluetoothLeScanner = new BluetoothLeScanner(mManagerService); 489 } 490 } 491 return sBluetoothLeScanner; 492 } 493 494 /** 495 * Return true if Bluetooth is currently enabled and ready for use. 496 * <p>Equivalent to: 497 * <code>getBluetoothState() == STATE_ON</code> 498 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 499 * 500 * @return true if the local adapter is turned on 501 */ 502 public boolean isEnabled() { 503 504 try { 505 synchronized(mManagerCallback) { 506 if (mService != null) return mService.isEnabled(); 507 } 508 } catch (RemoteException e) {Log.e(TAG, "", e);} 509 return false; 510 } 511 512 /** 513 * Get the current state of the local Bluetooth adapter. 514 * <p>Possible return values are 515 * {@link #STATE_OFF}, 516 * {@link #STATE_TURNING_ON}, 517 * {@link #STATE_ON}, 518 * {@link #STATE_TURNING_OFF}. 519 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 520 * 521 * @return current state of Bluetooth adapter 522 */ 523 public int getState() { 524 try { 525 synchronized(mManagerCallback) { 526 if (mService != null) 527 { 528 int state= mService.getState(); 529 if (VDBG) Log.d(TAG, "" + hashCode() + ": getState(). Returning " + state); 530 return state; 531 } 532 // TODO(BT) there might be a small gap during STATE_TURNING_ON that 533 // mService is null, handle that case 534 } 535 } catch (RemoteException e) {Log.e(TAG, "", e);} 536 if (DBG) Log.d(TAG, "" + hashCode() + ": getState() : mService = null. Returning STATE_OFF"); 537 return STATE_OFF; 538 } 539 540 /** 541 * Turn on the local Bluetooth adapter—do not use without explicit 542 * user action to turn on Bluetooth. 543 * <p>This powers on the underlying Bluetooth hardware, and starts all 544 * Bluetooth system services. 545 * <p class="caution"><strong>Bluetooth should never be enabled without 546 * direct user consent</strong>. If you want to turn on Bluetooth in order 547 * to create a wireless connection, you should use the {@link 548 * #ACTION_REQUEST_ENABLE} Intent, which will raise a dialog that requests 549 * user permission to turn on Bluetooth. The {@link #enable()} method is 550 * provided only for applications that include a user interface for changing 551 * system settings, such as a "power manager" app.</p> 552 * <p>This is an asynchronous call: it will return immediately, and 553 * clients should listen for {@link #ACTION_STATE_CHANGED} 554 * to be notified of subsequent adapter state changes. If this call returns 555 * true, then the adapter state will immediately transition from {@link 556 * #STATE_OFF} to {@link #STATE_TURNING_ON}, and some time 557 * later transition to either {@link #STATE_OFF} or {@link 558 * #STATE_ON}. If this call returns false then there was an 559 * immediate problem that will prevent the adapter from being turned on - 560 * such as Airplane mode, or the adapter is already turned on. 561 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 562 * permission 563 * 564 * @return true to indicate adapter startup has begun, or false on 565 * immediate error 566 */ 567 public boolean enable() { 568 if (isEnabled() == true){ 569 if (DBG) Log.d(TAG, "enable(): BT is already enabled..!"); 570 return true; 571 } 572 try { 573 return mManagerService.enable(); 574 } catch (RemoteException e) {Log.e(TAG, "", e);} 575 return false; 576 } 577 578 /** 579 * Turn off the local Bluetooth adapter—do not use without explicit 580 * user action to turn off Bluetooth. 581 * <p>This gracefully shuts down all Bluetooth connections, stops Bluetooth 582 * system services, and powers down the underlying Bluetooth hardware. 583 * <p class="caution"><strong>Bluetooth should never be disabled without 584 * direct user consent</strong>. The {@link #disable()} method is 585 * provided only for applications that include a user interface for changing 586 * system settings, such as a "power manager" app.</p> 587 * <p>This is an asynchronous call: it will return immediately, and 588 * clients should listen for {@link #ACTION_STATE_CHANGED} 589 * to be notified of subsequent adapter state changes. If this call returns 590 * true, then the adapter state will immediately transition from {@link 591 * #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time 592 * later transition to either {@link #STATE_OFF} or {@link 593 * #STATE_ON}. If this call returns false then there was an 594 * immediate problem that will prevent the adapter from being turned off - 595 * such as the adapter already being turned off. 596 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 597 * permission 598 * 599 * @return true to indicate adapter shutdown has begun, or false on 600 * immediate error 601 */ 602 public boolean disable() { 603 try { 604 return mManagerService.disable(true); 605 } catch (RemoteException e) {Log.e(TAG, "", e);} 606 return false; 607 } 608 609 /** 610 * Turn off the local Bluetooth adapter and don't persist the setting. 611 * 612 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 613 * permission 614 * 615 * @return true to indicate adapter shutdown has begun, or false on 616 * immediate error 617 * @hide 618 */ 619 public boolean disable(boolean persist) { 620 621 try { 622 return mManagerService.disable(persist); 623 } catch (RemoteException e) {Log.e(TAG, "", e);} 624 return false; 625 } 626 627 /** 628 * Returns the hardware address of the local Bluetooth adapter. 629 * <p>For example, "00:11:22:AA:BB:CC". 630 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 631 * 632 * @return Bluetooth hardware address as string 633 */ 634 public String getAddress() { 635 try { 636 return mManagerService.getAddress(); 637 } catch (RemoteException e) {Log.e(TAG, "", e);} 638 return null; 639 } 640 641 /** 642 * Get the friendly Bluetooth name of the local Bluetooth adapter. 643 * <p>This name is visible to remote Bluetooth devices. 644 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 645 * 646 * @return the Bluetooth name, or null on error 647 */ 648 public String getName() { 649 try { 650 return mManagerService.getName(); 651 } catch (RemoteException e) {Log.e(TAG, "", e);} 652 return null; 653 } 654 655 /** 656 * enable or disable Bluetooth HCI snoop log. 657 * 658 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 659 * permission 660 * 661 * @return true to indicate configure HCI log successfully, or false on 662 * immediate error 663 * @hide 664 */ 665 public boolean configHciSnoopLog(boolean enable) { 666 try { 667 synchronized(mManagerCallback) { 668 if (mService != null) return mService.configHciSnoopLog(enable); 669 } 670 } catch (RemoteException e) {Log.e(TAG, "", e);} 671 return false; 672 } 673 674 /** 675 * Get the UUIDs supported by the local Bluetooth adapter. 676 * 677 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 678 * 679 * @return the UUIDs supported by the local Bluetooth Adapter. 680 * @hide 681 */ 682 public ParcelUuid[] getUuids() { 683 if (getState() != STATE_ON) return null; 684 try { 685 synchronized(mManagerCallback) { 686 if (mService != null) return mService.getUuids(); 687 } 688 } catch (RemoteException e) {Log.e(TAG, "", e);} 689 return null; 690 } 691 692 /** 693 * Set the friendly Bluetooth name of the local Bluetooth adapter. 694 * <p>This name is visible to remote Bluetooth devices. 695 * <p>Valid Bluetooth names are a maximum of 248 bytes using UTF-8 696 * encoding, although many remote devices can only display the first 697 * 40 characters, and some may be limited to just 20. 698 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 699 * will return false. After turning on Bluetooth, 700 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 701 * to get the updated value. 702 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} 703 * 704 * @param name a valid Bluetooth name 705 * @return true if the name was set, false otherwise 706 */ 707 public boolean setName(String name) { 708 if (getState() != STATE_ON) return false; 709 try { 710 synchronized(mManagerCallback) { 711 if (mService != null) return mService.setName(name); 712 } 713 } catch (RemoteException e) {Log.e(TAG, "", e);} 714 return false; 715 } 716 717 /** 718 * Get the current Bluetooth scan mode of the local Bluetooth adapter. 719 * <p>The Bluetooth scan mode determines if the local adapter is 720 * connectable and/or discoverable from remote Bluetooth devices. 721 * <p>Possible values are: 722 * {@link #SCAN_MODE_NONE}, 723 * {@link #SCAN_MODE_CONNECTABLE}, 724 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. 725 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 726 * will return {@link #SCAN_MODE_NONE}. After turning on Bluetooth, 727 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 728 * to get the updated value. 729 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 730 * 731 * @return scan mode 732 */ 733 public int getScanMode() { 734 if (getState() != STATE_ON) return SCAN_MODE_NONE; 735 try { 736 synchronized(mManagerCallback) { 737 if (mService != null) return mService.getScanMode(); 738 } 739 } catch (RemoteException e) {Log.e(TAG, "", e);} 740 return SCAN_MODE_NONE; 741 } 742 743 /** 744 * Set the Bluetooth scan mode of the local Bluetooth adapter. 745 * <p>The Bluetooth scan mode determines if the local adapter is 746 * connectable and/or discoverable from remote Bluetooth devices. 747 * <p>For privacy reasons, discoverable mode is automatically turned off 748 * after <code>duration</code> seconds. For example, 120 seconds should be 749 * enough for a remote device to initiate and complete its discovery 750 * process. 751 * <p>Valid scan mode values are: 752 * {@link #SCAN_MODE_NONE}, 753 * {@link #SCAN_MODE_CONNECTABLE}, 754 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. 755 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 756 * will return false. After turning on Bluetooth, 757 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 758 * to get the updated value. 759 * <p>Requires {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} 760 * <p>Applications cannot set the scan mode. They should use 761 * <code>startActivityForResult( 762 * BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE}) 763 * </code>instead. 764 * 765 * @param mode valid scan mode 766 * @param duration time in seconds to apply scan mode, only used for 767 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE} 768 * @return true if the scan mode was set, false otherwise 769 * @hide 770 */ 771 public boolean setScanMode(int mode, int duration) { 772 if (getState() != STATE_ON) return false; 773 try { 774 synchronized(mManagerCallback) { 775 if (mService != null) return mService.setScanMode(mode, duration); 776 } 777 } catch (RemoteException e) {Log.e(TAG, "", e);} 778 return false; 779 } 780 781 /** @hide */ 782 public boolean setScanMode(int mode) { 783 if (getState() != STATE_ON) return false; 784 /* getDiscoverableTimeout() to use the latest from NV than use 0 */ 785 return setScanMode(mode, getDiscoverableTimeout()); 786 } 787 788 /** @hide */ 789 public int getDiscoverableTimeout() { 790 if (getState() != STATE_ON) return -1; 791 try { 792 synchronized(mManagerCallback) { 793 if (mService != null) return mService.getDiscoverableTimeout(); 794 } 795 } catch (RemoteException e) {Log.e(TAG, "", e);} 796 return -1; 797 } 798 799 /** @hide */ 800 public void setDiscoverableTimeout(int timeout) { 801 if (getState() != STATE_ON) return; 802 try { 803 synchronized(mManagerCallback) { 804 if (mService != null) mService.setDiscoverableTimeout(timeout); 805 } 806 } catch (RemoteException e) {Log.e(TAG, "", e);} 807 } 808 809 /** 810 * Start the remote device discovery process. 811 * <p>The discovery process usually involves an inquiry scan of about 12 812 * seconds, followed by a page scan of each new device to retrieve its 813 * Bluetooth name. 814 * <p>This is an asynchronous call, it will return immediately. Register 815 * for {@link #ACTION_DISCOVERY_STARTED} and {@link 816 * #ACTION_DISCOVERY_FINISHED} intents to determine exactly when the 817 * discovery starts and completes. Register for {@link 818 * BluetoothDevice#ACTION_FOUND} to be notified as remote Bluetooth devices 819 * are found. 820 * <p>Device discovery is a heavyweight procedure. New connections to 821 * remote Bluetooth devices should not be attempted while discovery is in 822 * progress, and existing connections will experience limited bandwidth 823 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 824 * discovery. Discovery is not managed by the Activity, 825 * but is run as a system service, so an application should always call 826 * {@link BluetoothAdapter#cancelDiscovery()} even if it 827 * did not directly request a discovery, just to be sure. 828 * <p>Device discovery will only find remote devices that are currently 829 * <i>discoverable</i> (inquiry scan enabled). Many Bluetooth devices are 830 * not discoverable by default, and need to be entered into a special mode. 831 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 832 * will return false. After turning on Bluetooth, 833 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 834 * to get the updated value. 835 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. 836 * 837 * @return true on success, false on error 838 */ 839 public boolean startDiscovery() { 840 if (getState() != STATE_ON) return false; 841 try { 842 synchronized(mManagerCallback) { 843 if (mService != null) return mService.startDiscovery(); 844 } 845 } catch (RemoteException e) {Log.e(TAG, "", e);} 846 return false; 847 } 848 849 /** 850 * Cancel the current device discovery process. 851 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. 852 * <p>Because discovery is a heavyweight procedure for the Bluetooth 853 * adapter, this method should always be called before attempting to connect 854 * to a remote device with {@link 855 * android.bluetooth.BluetoothSocket#connect()}. Discovery is not managed by 856 * the Activity, but is run as a system service, so an application should 857 * always call cancel discovery even if it did not directly request a 858 * discovery, just to be sure. 859 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 860 * will return false. After turning on Bluetooth, 861 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 862 * to get the updated value. 863 * 864 * @return true on success, false on error 865 */ 866 public boolean cancelDiscovery() { 867 if (getState() != STATE_ON) return false; 868 try { 869 synchronized(mManagerCallback) { 870 if (mService != null) return mService.cancelDiscovery(); 871 } 872 } catch (RemoteException e) {Log.e(TAG, "", e);} 873 return false; 874 } 875 876 /** 877 * Return true if the local Bluetooth adapter is currently in the device 878 * discovery process. 879 * <p>Device discovery is a heavyweight procedure. New connections to 880 * remote Bluetooth devices should not be attempted while discovery is in 881 * progress, and existing connections will experience limited bandwidth 882 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 883 * discovery. 884 * <p>Applications can also register for {@link #ACTION_DISCOVERY_STARTED} 885 * or {@link #ACTION_DISCOVERY_FINISHED} to be notified when discovery 886 * starts or completes. 887 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 888 * will return false. After turning on Bluetooth, 889 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 890 * to get the updated value. 891 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 892 * 893 * @return true if discovering 894 */ 895 public boolean isDiscovering() { 896 if (getState() != STATE_ON) return false; 897 try { 898 synchronized(mManagerCallback) { 899 if (mService != null ) return mService.isDiscovering(); 900 } 901 } catch (RemoteException e) {Log.e(TAG, "", e);} 902 return false; 903 } 904 905 /** 906 * Return true if the multi advertisement is supported by the chipset 907 * 908 * @return true if Multiple Advertisement feature is supported 909 */ 910 public boolean isMultipleAdvertisementSupported() { 911 if (getState() != STATE_ON) return false; 912 try { 913 return mService.isMultiAdvertisementSupported(); 914 } catch (RemoteException e) { 915 Log.e(TAG, "failed to get isMultipleAdvertisementSupported, error: ", e); 916 } 917 return false; 918 } 919 920 /** 921 * Return true if offloaded filters are supported 922 * 923 * @return true if chipset supports on-chip filtering 924 */ 925 public boolean isOffloadedFilteringSupported() { 926 if (getState() != STATE_ON) return false; 927 try { 928 return mService.isOffloadedFilteringSupported(); 929 } catch (RemoteException e) { 930 Log.e(TAG, "failed to get isOffloadedFilteringSupported, error: ", e); 931 } 932 return false; 933 } 934 935 /** 936 * Return true if offloaded scan batching is supported 937 * 938 * @return true if chipset supports on-chip scan batching 939 */ 940 public boolean isOffloadedScanBatchingSupported() { 941 if (getState() != STATE_ON) return false; 942 try { 943 return mService.isOffloadedScanBatchingSupported(); 944 } catch (RemoteException e) { 945 Log.e(TAG, "failed to get isOffloadedScanBatchingSupported, error: ", e); 946 } 947 return false; 948 } 949 950 /** 951 * Return the record of {@link BluetoothActivityEnergyInfo} object that 952 * has the activity and energy info. This can be used to ascertain what 953 * the controller has been up to, since the last sample. 954 * @param updateType Type of info, cached vs refreshed. 955 * 956 * @return a record with {@link BluetoothActivityEnergyInfo} or null if 957 * report is unavailable or unsupported 958 * @hide 959 */ 960 public BluetoothActivityEnergyInfo getControllerActivityEnergyInfo(int updateType) { 961 if (getState() != STATE_ON) return null; 962 try { 963 BluetoothActivityEnergyInfo record; 964 if (!mService.isActivityAndEnergyReportingSupported()) { 965 return null; 966 } 967 synchronized(this) { 968 if (updateType == ACTIVITY_ENERGY_INFO_REFRESHED) { 969 mService.getActivityEnergyInfoFromController(); 970 wait(CONTROLLER_ENERGY_UPDATE_TIMEOUT_MILLIS); 971 } 972 record = mService.reportActivityInfo(); 973 if (record.isValid()) { 974 return record; 975 } else { 976 return null; 977 } 978 } 979 } catch (InterruptedException e) { 980 Log.e(TAG, "getControllerActivityEnergyInfoCallback wait interrupted: " + e); 981 } catch (RemoteException e) { 982 Log.e(TAG, "getControllerActivityEnergyInfoCallback: " + e); 983 } 984 return null; 985 } 986 987 /** 988 * Return the set of {@link BluetoothDevice} objects that are bonded 989 * (paired) to the local adapter. 990 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 991 * will return an empty set. After turning on Bluetooth, 992 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 993 * to get the updated value. 994 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 995 * 996 * @return unmodifiable set of {@link BluetoothDevice}, or null on error 997 */ 998 public Set<BluetoothDevice> getBondedDevices() { 999 if (getState() != STATE_ON) { 1000 return toDeviceSet(new BluetoothDevice[0]); 1001 } 1002 try { 1003 synchronized(mManagerCallback) { 1004 if (mService != null) return toDeviceSet(mService.getBondedDevices()); 1005 } 1006 return toDeviceSet(new BluetoothDevice[0]); 1007 } catch (RemoteException e) {Log.e(TAG, "", e);} 1008 return null; 1009 } 1010 1011 /** 1012 * Get the current connection state of the local Bluetooth adapter. 1013 * This can be used to check whether the local Bluetooth adapter is connected 1014 * to any profile of any other remote Bluetooth Device. 1015 * 1016 * <p> Use this function along with {@link #ACTION_CONNECTION_STATE_CHANGED} 1017 * intent to get the connection state of the adapter. 1018 * 1019 * @return One of {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTED}, 1020 * {@link #STATE_CONNECTING} or {@link #STATE_DISCONNECTED} 1021 * 1022 * @hide 1023 */ 1024 public int getConnectionState() { 1025 if (getState() != STATE_ON) return BluetoothAdapter.STATE_DISCONNECTED; 1026 try { 1027 synchronized(mManagerCallback) { 1028 if (mService != null) return mService.getAdapterConnectionState(); 1029 } 1030 } catch (RemoteException e) {Log.e(TAG, "getConnectionState:", e);} 1031 return BluetoothAdapter.STATE_DISCONNECTED; 1032 } 1033 1034 /** 1035 * Get the current connection state of a profile. 1036 * This function can be used to check whether the local Bluetooth adapter 1037 * is connected to any remote device for a specific profile. 1038 * Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET}, 1039 * {@link BluetoothProfile#A2DP}. 1040 * 1041 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 1042 * 1043 * <p> Return value can be one of 1044 * {@link BluetoothProfile#STATE_DISCONNECTED}, 1045 * {@link BluetoothProfile#STATE_CONNECTING}, 1046 * {@link BluetoothProfile#STATE_CONNECTED}, 1047 * {@link BluetoothProfile#STATE_DISCONNECTING} 1048 */ 1049 public int getProfileConnectionState(int profile) { 1050 if (getState() != STATE_ON) return BluetoothProfile.STATE_DISCONNECTED; 1051 try { 1052 synchronized(mManagerCallback) { 1053 if (mService != null) return mService.getProfileConnectionState(profile); 1054 } 1055 } catch (RemoteException e) { 1056 Log.e(TAG, "getProfileConnectionState:", e); 1057 } 1058 return BluetoothProfile.STATE_DISCONNECTED; 1059 } 1060 1061 /** 1062 * Create a listening, secure RFCOMM Bluetooth socket. 1063 * <p>A remote device connecting to this socket will be authenticated and 1064 * communication on this socket will be encrypted. 1065 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 1066 * connections from a listening {@link BluetoothServerSocket}. 1067 * <p>Valid RFCOMM channels are in range 1 to 30. 1068 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} 1069 * @param channel RFCOMM channel to listen on 1070 * @return a listening RFCOMM BluetoothServerSocket 1071 * @throws IOException on error, for example Bluetooth not available, or 1072 * insufficient permissions, or channel in use. 1073 * @hide 1074 */ 1075 public BluetoothServerSocket listenUsingRfcommOn(int channel) throws IOException { 1076 BluetoothServerSocket socket = new BluetoothServerSocket( 1077 BluetoothSocket.TYPE_RFCOMM, true, true, channel); 1078 int errno = socket.mSocket.bindListen(); 1079 if (errno != 0) { 1080 //TODO(BT): Throw the same exception error code 1081 // that the previous code was using. 1082 //socket.mSocket.throwErrnoNative(errno); 1083 throw new IOException("Error: " + errno); 1084 } 1085 return socket; 1086 } 1087 1088 /** 1089 * Create a listening, secure RFCOMM Bluetooth socket with Service Record. 1090 * <p>A remote device connecting to this socket will be authenticated and 1091 * communication on this socket will be encrypted. 1092 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 1093 * connections from a listening {@link BluetoothServerSocket}. 1094 * <p>The system will assign an unused RFCOMM channel to listen on. 1095 * <p>The system will also register a Service Discovery 1096 * Protocol (SDP) record with the local SDP server containing the specified 1097 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 1098 * can use the same UUID to query our SDP server and discover which channel 1099 * to connect to. This SDP record will be removed when this socket is 1100 * closed, or if this application closes unexpectedly. 1101 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 1102 * connect to this socket from another device using the same {@link UUID}. 1103 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1104 * @param name service name for SDP record 1105 * @param uuid uuid for SDP record 1106 * @return a listening RFCOMM BluetoothServerSocket 1107 * @throws IOException on error, for example Bluetooth not available, or 1108 * insufficient permissions, or channel in use. 1109 */ 1110 public BluetoothServerSocket listenUsingRfcommWithServiceRecord(String name, UUID uuid) 1111 throws IOException { 1112 return createNewRfcommSocketAndRecord(name, uuid, true, true); 1113 } 1114 1115 /** 1116 * Create a listening, insecure RFCOMM Bluetooth socket with Service Record. 1117 * <p>The link key is not required to be authenticated, i.e the communication may be 1118 * vulnerable to Man In the Middle attacks. For Bluetooth 2.1 devices, 1119 * the link will be encrypted, as encryption is mandartory. 1120 * For legacy devices (pre Bluetooth 2.1 devices) the link will not 1121 * be encrypted. Use {@link #listenUsingRfcommWithServiceRecord}, if an 1122 * encrypted and authenticated communication channel is desired. 1123 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 1124 * connections from a listening {@link BluetoothServerSocket}. 1125 * <p>The system will assign an unused RFCOMM channel to listen on. 1126 * <p>The system will also register a Service Discovery 1127 * Protocol (SDP) record with the local SDP server containing the specified 1128 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 1129 * can use the same UUID to query our SDP server and discover which channel 1130 * to connect to. This SDP record will be removed when this socket is 1131 * closed, or if this application closes unexpectedly. 1132 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 1133 * connect to this socket from another device using the same {@link UUID}. 1134 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1135 * @param name service name for SDP record 1136 * @param uuid uuid for SDP record 1137 * @return a listening RFCOMM BluetoothServerSocket 1138 * @throws IOException on error, for example Bluetooth not available, or 1139 * insufficient permissions, or channel in use. 1140 */ 1141 public BluetoothServerSocket listenUsingInsecureRfcommWithServiceRecord(String name, UUID uuid) 1142 throws IOException { 1143 return createNewRfcommSocketAndRecord(name, uuid, false, false); 1144 } 1145 1146 /** 1147 * Create a listening, encrypted, 1148 * RFCOMM Bluetooth socket with Service Record. 1149 * <p>The link will be encrypted, but the link key is not required to be authenticated 1150 * i.e the communication is vulnerable to Man In the Middle attacks. Use 1151 * {@link #listenUsingRfcommWithServiceRecord}, to ensure an authenticated link key. 1152 * <p> Use this socket if authentication of link key is not possible. 1153 * For example, for Bluetooth 2.1 devices, if any of the devices does not have 1154 * an input and output capability or just has the ability to display a numeric key, 1155 * a secure socket connection is not possible and this socket can be used. 1156 * Use {@link #listenUsingInsecureRfcommWithServiceRecord}, if encryption is not required. 1157 * For Bluetooth 2.1 devices, the link will be encrypted, as encryption is mandartory. 1158 * For more details, refer to the Security Model section 5.2 (vol 3) of 1159 * Bluetooth Core Specification version 2.1 + EDR. 1160 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 1161 * connections from a listening {@link BluetoothServerSocket}. 1162 * <p>The system will assign an unused RFCOMM channel to listen on. 1163 * <p>The system will also register a Service Discovery 1164 * Protocol (SDP) record with the local SDP server containing the specified 1165 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 1166 * can use the same UUID to query our SDP server and discover which channel 1167 * to connect to. This SDP record will be removed when this socket is 1168 * closed, or if this application closes unexpectedly. 1169 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 1170 * connect to this socket from another device using the same {@link UUID}. 1171 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1172 * @param name service name for SDP record 1173 * @param uuid uuid for SDP record 1174 * @return a listening RFCOMM BluetoothServerSocket 1175 * @throws IOException on error, for example Bluetooth not available, or 1176 * insufficient permissions, or channel in use. 1177 * @hide 1178 */ 1179 public BluetoothServerSocket listenUsingEncryptedRfcommWithServiceRecord( 1180 String name, UUID uuid) throws IOException { 1181 return createNewRfcommSocketAndRecord(name, uuid, false, true); 1182 } 1183 1184 1185 private BluetoothServerSocket createNewRfcommSocketAndRecord(String name, UUID uuid, 1186 boolean auth, boolean encrypt) throws IOException { 1187 BluetoothServerSocket socket; 1188 socket = new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, auth, 1189 encrypt, new ParcelUuid(uuid)); 1190 socket.setServiceName(name); 1191 int errno = socket.mSocket.bindListen(); 1192 if (errno != 0) { 1193 //TODO(BT): Throw the same exception error code 1194 // that the previous code was using. 1195 //socket.mSocket.throwErrnoNative(errno); 1196 throw new IOException("Error: " + errno); 1197 } 1198 return socket; 1199 } 1200 1201 /** 1202 * Construct an unencrypted, unauthenticated, RFCOMM server socket. 1203 * Call #accept to retrieve connections to this socket. 1204 * @return An RFCOMM BluetoothServerSocket 1205 * @throws IOException On error, for example Bluetooth not available, or 1206 * insufficient permissions. 1207 * @hide 1208 */ 1209 public BluetoothServerSocket listenUsingInsecureRfcommOn(int port) throws IOException { 1210 BluetoothServerSocket socket = new BluetoothServerSocket( 1211 BluetoothSocket.TYPE_RFCOMM, false, false, port); 1212 int errno = socket.mSocket.bindListen(); 1213 if (errno != 0) { 1214 //TODO(BT): Throw the same exception error code 1215 // that the previous code was using. 1216 //socket.mSocket.throwErrnoNative(errno); 1217 throw new IOException("Error: " + errno); 1218 } 1219 return socket; 1220 } 1221 1222 /** 1223 * Construct an encrypted, RFCOMM server socket. 1224 * Call #accept to retrieve connections to this socket. 1225 * @return An RFCOMM BluetoothServerSocket 1226 * @throws IOException On error, for example Bluetooth not available, or 1227 * insufficient permissions. 1228 * @hide 1229 */ 1230 public BluetoothServerSocket listenUsingEncryptedRfcommOn(int port) 1231 throws IOException { 1232 BluetoothServerSocket socket = new BluetoothServerSocket( 1233 BluetoothSocket.TYPE_RFCOMM, false, true, port); 1234 int errno = socket.mSocket.bindListen(); 1235 if (errno < 0) { 1236 //TODO(BT): Throw the same exception error code 1237 // that the previous code was using. 1238 //socket.mSocket.throwErrnoNative(errno); 1239 throw new IOException("Error: " + errno); 1240 } 1241 return socket; 1242 } 1243 1244 /** 1245 * Construct a SCO server socket. 1246 * Call #accept to retrieve connections to this socket. 1247 * @return A SCO BluetoothServerSocket 1248 * @throws IOException On error, for example Bluetooth not available, or 1249 * insufficient permissions. 1250 * @hide 1251 */ 1252 public static BluetoothServerSocket listenUsingScoOn() throws IOException { 1253 BluetoothServerSocket socket = new BluetoothServerSocket( 1254 BluetoothSocket.TYPE_SCO, false, false, -1); 1255 int errno = socket.mSocket.bindListen(); 1256 if (errno < 0) { 1257 //TODO(BT): Throw the same exception error code 1258 // that the previous code was using. 1259 //socket.mSocket.throwErrnoNative(errno); 1260 } 1261 return socket; 1262 } 1263 1264 /** 1265 * Read the local Out of Band Pairing Data 1266 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1267 * 1268 * @return Pair<byte[], byte[]> of Hash and Randomizer 1269 * 1270 * @hide 1271 */ 1272 public Pair<byte[], byte[]> readOutOfBandData() { 1273 if (getState() != STATE_ON) return null; 1274 //TODO(BT 1275 /* 1276 try { 1277 byte[] hash; 1278 byte[] randomizer; 1279 1280 byte[] ret = mService.readOutOfBandData(); 1281 1282 if (ret == null || ret.length != 32) return null; 1283 1284 hash = Arrays.copyOfRange(ret, 0, 16); 1285 randomizer = Arrays.copyOfRange(ret, 16, 32); 1286 1287 if (DBG) { 1288 Log.d(TAG, "readOutOfBandData:" + Arrays.toString(hash) + 1289 ":" + Arrays.toString(randomizer)); 1290 } 1291 return new Pair<byte[], byte[]>(hash, randomizer); 1292 1293 } catch (RemoteException e) {Log.e(TAG, "", e);}*/ 1294 return null; 1295 } 1296 1297 /** 1298 * Get the profile proxy object associated with the profile. 1299 * 1300 * <p>Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET}, 1301 * {@link BluetoothProfile#A2DP}, {@link BluetoothProfile#GATT}, or 1302 * {@link BluetoothProfile#GATT_SERVER}. Clients must implement 1303 * {@link BluetoothProfile.ServiceListener} to get notified of 1304 * the connection status and to get the proxy object. 1305 * 1306 * @param context Context of the application 1307 * @param listener The service Listener for connection callbacks. 1308 * @param profile The Bluetooth profile; either {@link BluetoothProfile#HEALTH}, 1309 * {@link BluetoothProfile#HEADSET} or {@link BluetoothProfile#A2DP}. 1310 * @return true on success, false on error 1311 */ 1312 public boolean getProfileProxy(Context context, BluetoothProfile.ServiceListener listener, 1313 int profile) { 1314 if (context == null || listener == null) return false; 1315 1316 if (profile == BluetoothProfile.HEADSET) { 1317 BluetoothHeadset headset = new BluetoothHeadset(context, listener); 1318 return true; 1319 } else if (profile == BluetoothProfile.A2DP) { 1320 BluetoothA2dp a2dp = new BluetoothA2dp(context, listener); 1321 return true; 1322 } else if (profile == BluetoothProfile.A2DP_SINK) { 1323 BluetoothA2dpSink a2dpSink = new BluetoothA2dpSink(context, listener); 1324 return true; 1325 } else if (profile == BluetoothProfile.AVRCP_CONTROLLER) { 1326 BluetoothAvrcpController avrcp = new BluetoothAvrcpController(context, listener); 1327 return true; 1328 } else if (profile == BluetoothProfile.INPUT_DEVICE) { 1329 BluetoothInputDevice iDev = new BluetoothInputDevice(context, listener); 1330 return true; 1331 } else if (profile == BluetoothProfile.PAN) { 1332 BluetoothPan pan = new BluetoothPan(context, listener); 1333 return true; 1334 } else if (profile == BluetoothProfile.HEALTH) { 1335 BluetoothHealth health = new BluetoothHealth(context, listener); 1336 return true; 1337 } else if (profile == BluetoothProfile.MAP) { 1338 BluetoothMap map = new BluetoothMap(context, listener); 1339 return true; 1340 } else if (profile == BluetoothProfile.HEADSET_CLIENT) { 1341 BluetoothHeadsetClient headsetClient = new BluetoothHeadsetClient(context, listener); 1342 return true; 1343 } else { 1344 return false; 1345 } 1346 } 1347 1348 /** 1349 * Close the connection of the profile proxy to the Service. 1350 * 1351 * <p> Clients should call this when they are no longer using 1352 * the proxy obtained from {@link #getProfileProxy}. 1353 * Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET} or 1354 * {@link BluetoothProfile#A2DP} 1355 * 1356 * @param profile 1357 * @param proxy Profile proxy object 1358 */ 1359 public void closeProfileProxy(int profile, BluetoothProfile proxy) { 1360 if (proxy == null) return; 1361 1362 switch (profile) { 1363 case BluetoothProfile.HEADSET: 1364 BluetoothHeadset headset = (BluetoothHeadset)proxy; 1365 headset.close(); 1366 break; 1367 case BluetoothProfile.A2DP: 1368 BluetoothA2dp a2dp = (BluetoothA2dp)proxy; 1369 a2dp.close(); 1370 break; 1371 case BluetoothProfile.A2DP_SINK: 1372 BluetoothA2dpSink a2dpSink = (BluetoothA2dpSink)proxy; 1373 a2dpSink.close(); 1374 break; 1375 case BluetoothProfile.AVRCP_CONTROLLER: 1376 BluetoothAvrcpController avrcp = (BluetoothAvrcpController)proxy; 1377 avrcp.close(); 1378 break; 1379 case BluetoothProfile.INPUT_DEVICE: 1380 BluetoothInputDevice iDev = (BluetoothInputDevice)proxy; 1381 iDev.close(); 1382 break; 1383 case BluetoothProfile.PAN: 1384 BluetoothPan pan = (BluetoothPan)proxy; 1385 pan.close(); 1386 break; 1387 case BluetoothProfile.HEALTH: 1388 BluetoothHealth health = (BluetoothHealth)proxy; 1389 health.close(); 1390 break; 1391 case BluetoothProfile.GATT: 1392 BluetoothGatt gatt = (BluetoothGatt)proxy; 1393 gatt.close(); 1394 break; 1395 case BluetoothProfile.GATT_SERVER: 1396 BluetoothGattServer gattServer = (BluetoothGattServer)proxy; 1397 gattServer.close(); 1398 break; 1399 case BluetoothProfile.MAP: 1400 BluetoothMap map = (BluetoothMap)proxy; 1401 map.close(); 1402 break; 1403 case BluetoothProfile.HEADSET_CLIENT: 1404 BluetoothHeadsetClient headsetClient = (BluetoothHeadsetClient)proxy; 1405 headsetClient.close(); 1406 break; 1407 } 1408 } 1409 1410 final private IBluetoothManagerCallback mManagerCallback = 1411 new IBluetoothManagerCallback.Stub() { 1412 public void onBluetoothServiceUp(IBluetooth bluetoothService) { 1413 if (VDBG) Log.d(TAG, "onBluetoothServiceUp: " + bluetoothService); 1414 synchronized (mManagerCallback) { 1415 mService = bluetoothService; 1416 for (IBluetoothManagerCallback cb : mProxyServiceStateCallbacks ){ 1417 try { 1418 if (cb != null) { 1419 cb.onBluetoothServiceUp(bluetoothService); 1420 } else { 1421 Log.d(TAG, "onBluetoothServiceUp: cb is null!!!"); 1422 } 1423 } catch (Exception e) { Log.e(TAG,"",e);} 1424 } 1425 } 1426 } 1427 1428 public void onBluetoothServiceDown() { 1429 if (VDBG) Log.d(TAG, "onBluetoothServiceDown: " + mService); 1430 synchronized (mManagerCallback) { 1431 mService = null; 1432 mLeScanClients.clear(); 1433 if (sBluetoothLeAdvertiser != null) sBluetoothLeAdvertiser.cleanup(); 1434 if (sBluetoothLeScanner != null) sBluetoothLeScanner.cleanup(); 1435 for (IBluetoothManagerCallback cb : mProxyServiceStateCallbacks ){ 1436 try { 1437 if (cb != null) { 1438 cb.onBluetoothServiceDown(); 1439 } else { 1440 Log.d(TAG, "onBluetoothServiceDown: cb is null!!!"); 1441 } 1442 } catch (Exception e) { Log.e(TAG,"",e);} 1443 } 1444 } 1445 } 1446 }; 1447 1448 /** 1449 * Enable the Bluetooth Adapter, but don't auto-connect devices 1450 * and don't persist state. Only for use by system applications. 1451 * @hide 1452 */ 1453 public boolean enableNoAutoConnect() { 1454 if (isEnabled() == true){ 1455 if (DBG) Log.d(TAG, "enableNoAutoConnect(): BT is already enabled..!"); 1456 return true; 1457 } 1458 try { 1459 return mManagerService.enableNoAutoConnect(); 1460 } catch (RemoteException e) {Log.e(TAG, "", e);} 1461 return false; 1462 } 1463 1464 /** 1465 * Enable control of the Bluetooth Adapter for a single application. 1466 * 1467 * <p>Some applications need to use Bluetooth for short periods of time to 1468 * transfer data but don't want all the associated implications like 1469 * automatic connection to headsets etc. 1470 * 1471 * <p> Multiple applications can call this. This is reference counted and 1472 * Bluetooth disabled only when no one else is using it. There will be no UI 1473 * shown to the user while bluetooth is being enabled. Any user action will 1474 * override this call. For example, if user wants Bluetooth on and the last 1475 * user of this API wanted to disable Bluetooth, Bluetooth will not be 1476 * turned off. 1477 * 1478 * <p> This API is only meant to be used by internal applications. Third 1479 * party applications but use {@link #enable} and {@link #disable} APIs. 1480 * 1481 * <p> If this API returns true, it means the callback will be called. 1482 * The callback will be called with the current state of Bluetooth. 1483 * If the state is not what was requested, an internal error would be the 1484 * reason. If Bluetooth is already on and if this function is called to turn 1485 * it on, the api will return true and a callback will be called. 1486 * 1487 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1488 * 1489 * @param on True for on, false for off. 1490 * @param callback The callback to notify changes to the state. 1491 * @hide 1492 */ 1493 public boolean changeApplicationBluetoothState(boolean on, 1494 BluetoothStateChangeCallback callback) { 1495 if (callback == null) return false; 1496 1497 //TODO(BT) 1498 /* 1499 try { 1500 return mService.changeApplicationBluetoothState(on, new 1501 StateChangeCallbackWrapper(callback), new Binder()); 1502 } catch (RemoteException e) { 1503 Log.e(TAG, "changeBluetoothState", e); 1504 }*/ 1505 return false; 1506 } 1507 1508 /** 1509 * @hide 1510 */ 1511 public interface BluetoothStateChangeCallback { 1512 public void onBluetoothStateChange(boolean on); 1513 } 1514 1515 /** 1516 * @hide 1517 */ 1518 public class StateChangeCallbackWrapper extends IBluetoothStateChangeCallback.Stub { 1519 private BluetoothStateChangeCallback mCallback; 1520 1521 StateChangeCallbackWrapper(BluetoothStateChangeCallback 1522 callback) { 1523 mCallback = callback; 1524 } 1525 1526 @Override 1527 public void onBluetoothStateChange(boolean on) { 1528 mCallback.onBluetoothStateChange(on); 1529 } 1530 } 1531 1532 private Set<BluetoothDevice> toDeviceSet(BluetoothDevice[] devices) { 1533 Set<BluetoothDevice> deviceSet = new HashSet<BluetoothDevice>(Arrays.asList(devices)); 1534 return Collections.unmodifiableSet(deviceSet); 1535 } 1536 1537 protected void finalize() throws Throwable { 1538 try { 1539 mManagerService.unregisterAdapter(mManagerCallback); 1540 } catch (RemoteException e) { 1541 Log.e(TAG, "", e); 1542 } finally { 1543 super.finalize(); 1544 } 1545 } 1546 1547 1548 /** 1549 * Validate a String Bluetooth address, such as "00:43:A8:23:10:F0" 1550 * <p>Alphabetic characters must be uppercase to be valid. 1551 * 1552 * @param address Bluetooth address as string 1553 * @return true if the address is valid, false otherwise 1554 */ 1555 public static boolean checkBluetoothAddress(String address) { 1556 if (address == null || address.length() != ADDRESS_LENGTH) { 1557 return false; 1558 } 1559 for (int i = 0; i < ADDRESS_LENGTH; i++) { 1560 char c = address.charAt(i); 1561 switch (i % 3) { 1562 case 0: 1563 case 1: 1564 if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F')) { 1565 // hex character, OK 1566 break; 1567 } 1568 return false; 1569 case 2: 1570 if (c == ':') { 1571 break; // OK 1572 } 1573 return false; 1574 } 1575 } 1576 return true; 1577 } 1578 1579 /*package*/ IBluetoothManager getBluetoothManager() { 1580 return mManagerService; 1581 } 1582 1583 private ArrayList<IBluetoothManagerCallback> mProxyServiceStateCallbacks = new ArrayList<IBluetoothManagerCallback>(); 1584 1585 /*package*/ IBluetooth getBluetoothService(IBluetoothManagerCallback cb) { 1586 synchronized (mManagerCallback) { 1587 if (cb == null) { 1588 Log.w(TAG, "getBluetoothService() called with no BluetoothManagerCallback"); 1589 } else if (!mProxyServiceStateCallbacks.contains(cb)) { 1590 mProxyServiceStateCallbacks.add(cb); 1591 } 1592 } 1593 return mService; 1594 } 1595 1596 /*package*/ void removeServiceStateCallback(IBluetoothManagerCallback cb) { 1597 synchronized (mManagerCallback) { 1598 mProxyServiceStateCallbacks.remove(cb); 1599 } 1600 } 1601 1602 /** 1603 * Callback interface used to deliver LE scan results. 1604 * 1605 * @see #startLeScan(LeScanCallback) 1606 * @see #startLeScan(UUID[], LeScanCallback) 1607 */ 1608 public interface LeScanCallback { 1609 /** 1610 * Callback reporting an LE device found during a device scan initiated 1611 * by the {@link BluetoothAdapter#startLeScan} function. 1612 * 1613 * @param device Identifies the remote device 1614 * @param rssi The RSSI value for the remote device as reported by the 1615 * Bluetooth hardware. 0 if no RSSI value is available. 1616 * @param scanRecord The content of the advertisement record offered by 1617 * the remote device. 1618 */ 1619 public void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord); 1620 } 1621 1622 /** 1623 * Starts a scan for Bluetooth LE devices. 1624 * 1625 * <p>Results of the scan are reported using the 1626 * {@link LeScanCallback#onLeScan} callback. 1627 * 1628 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 1629 * 1630 * @param callback the callback LE scan results are delivered 1631 * @return true, if the scan was started successfully 1632 * @deprecated use {@link BluetoothLeScanner#startScan(List, ScanSettings, ScanCallback)} 1633 * instead. 1634 */ 1635 @Deprecated 1636 public boolean startLeScan(LeScanCallback callback) { 1637 return startLeScan(null, callback); 1638 } 1639 1640 /** 1641 * Starts a scan for Bluetooth LE devices, looking for devices that 1642 * advertise given services. 1643 * 1644 * <p>Devices which advertise all specified services are reported using the 1645 * {@link LeScanCallback#onLeScan} callback. 1646 * 1647 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 1648 * 1649 * @param serviceUuids Array of services to look for 1650 * @param callback the callback LE scan results are delivered 1651 * @return true, if the scan was started successfully 1652 * @deprecated use {@link BluetoothLeScanner#startScan(List, ScanSettings, ScanCallback)} 1653 * instead. 1654 */ 1655 @Deprecated 1656 public boolean startLeScan(final UUID[] serviceUuids, final LeScanCallback callback) { 1657 if (DBG) Log.d(TAG, "startLeScan(): " + serviceUuids); 1658 if (callback == null) { 1659 if (DBG) Log.e(TAG, "startLeScan: null callback"); 1660 return false; 1661 } 1662 BluetoothLeScanner scanner = getBluetoothLeScanner(); 1663 if (scanner == null) { 1664 if (DBG) Log.e(TAG, "startLeScan: cannot get BluetoothLeScanner"); 1665 return false; 1666 } 1667 1668 synchronized(mLeScanClients) { 1669 if (mLeScanClients.containsKey(callback)) { 1670 if (DBG) Log.e(TAG, "LE Scan has already started"); 1671 return false; 1672 } 1673 1674 try { 1675 IBluetoothGatt iGatt = mManagerService.getBluetoothGatt(); 1676 if (iGatt == null) { 1677 // BLE is not supported 1678 return false; 1679 } 1680 1681 ScanCallback scanCallback = new ScanCallback() { 1682 @Override 1683 public void onScanResult(int callbackType, ScanResult result) { 1684 if (callbackType != ScanSettings.CALLBACK_TYPE_ALL_MATCHES) { 1685 // Should not happen. 1686 Log.e(TAG, "LE Scan has already started"); 1687 return; 1688 } 1689 ScanRecord scanRecord = result.getScanRecord(); 1690 if (scanRecord == null) { 1691 return; 1692 } 1693 if (serviceUuids != null) { 1694 List<ParcelUuid> uuids = new ArrayList<ParcelUuid>(); 1695 for (UUID uuid : serviceUuids) { 1696 uuids.add(new ParcelUuid(uuid)); 1697 } 1698 List<ParcelUuid> scanServiceUuids = scanRecord.getServiceUuids(); 1699 if (scanServiceUuids == null || !scanServiceUuids.containsAll(uuids)) { 1700 if (DBG) Log.d(TAG, "uuids does not match"); 1701 return; 1702 } 1703 } 1704 callback.onLeScan(result.getDevice(), result.getRssi(), 1705 scanRecord.getBytes()); 1706 } 1707 }; 1708 ScanSettings settings = new ScanSettings.Builder() 1709 .setCallbackType(ScanSettings.CALLBACK_TYPE_ALL_MATCHES) 1710 .setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY).build(); 1711 1712 List<ScanFilter> filters = new ArrayList<ScanFilter>(); 1713 if (serviceUuids != null && serviceUuids.length > 0) { 1714 // Note scan filter does not support matching an UUID array so we put one 1715 // UUID to hardware and match the whole array in callback. 1716 ScanFilter filter = new ScanFilter.Builder().setServiceUuid( 1717 new ParcelUuid(serviceUuids[0])).build(); 1718 filters.add(filter); 1719 } 1720 scanner.startScan(filters, settings, scanCallback); 1721 1722 mLeScanClients.put(callback, scanCallback); 1723 return true; 1724 1725 } catch (RemoteException e) { 1726 Log.e(TAG,"",e); 1727 } 1728 } 1729 return false; 1730 } 1731 1732 /** 1733 * Stops an ongoing Bluetooth LE device scan. 1734 * 1735 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 1736 * 1737 * @param callback used to identify which scan to stop 1738 * must be the same handle used to start the scan 1739 * @deprecated Use {@link BluetoothLeScanner#stopScan(ScanCallback)} instead. 1740 */ 1741 @Deprecated 1742 public void stopLeScan(LeScanCallback callback) { 1743 if (DBG) Log.d(TAG, "stopLeScan()"); 1744 BluetoothLeScanner scanner = getBluetoothLeScanner(); 1745 if (scanner == null) { 1746 return; 1747 } 1748 synchronized (mLeScanClients) { 1749 ScanCallback scanCallback = mLeScanClients.remove(callback); 1750 if (scanCallback == null) { 1751 if (DBG) Log.d(TAG, "scan not started yet"); 1752 return; 1753 } 1754 scanner.stopScan(scanCallback); 1755 } 1756 } 1757 } 1758
