1 /* 2 * Copyright (C) 2009 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.content.Context; 22 import android.os.Binder; 23 import android.os.IBinder; 24 import android.os.Message; 25 import android.os.ParcelUuid; 26 import android.os.RemoteException; 27 import android.os.ServiceManager; 28 import android.util.Log; 29 import android.util.Pair; 30 import java.io.IOException; 31 import java.lang.ref.WeakReference; 32 import java.util.ArrayList; 33 import java.util.Arrays; 34 import java.util.Collections; 35 import java.util.HashSet; 36 import java.util.HashMap; 37 import java.util.LinkedList; 38 import java.util.Locale; 39 import java.util.Map; 40 import java.util.Random; 41 import java.util.Set; 42 import java.util.UUID; 43 44 /** 45 * Represents the local device Bluetooth adapter. The {@link BluetoothAdapter} 46 * lets you perform fundamental Bluetooth tasks, such as initiate 47 * device discovery, query a list of bonded (paired) devices, 48 * instantiate a {@link BluetoothDevice} using a known MAC address, and create 49 * a {@link BluetoothServerSocket} to listen for connection requests from other 50 * devices, and start a scan for Bluetooth LE devices. 51 * 52 * <p>To get a {@link BluetoothAdapter} representing the local Bluetooth 53 * adapter, when running on JELLY_BEAN_MR1 and below, call the 54 * static {@link #getDefaultAdapter} method; when running on JELLY_BEAN_MR2 and 55 * higher, retrieve it through 56 * {@link android.content.Context#getSystemService} with 57 * {@link android.content.Context#BLUETOOTH_SERVICE}. 58 * Fundamentally, this is your starting point for all 59 * Bluetooth actions. Once you have the local adapter, you can get a set of 60 * {@link BluetoothDevice} objects representing all paired devices with 61 * {@link #getBondedDevices()}; start device discovery with 62 * {@link #startDiscovery()}; or create a {@link BluetoothServerSocket} to 63 * listen for incoming connection requests with 64 * {@link #listenUsingRfcommWithServiceRecord(String,UUID)}; or start a scan for 65 * Bluetooth LE devices with {@link #startLeScan(LeScanCallback callback)}. 66 * 67 * <p class="note"><strong>Note:</strong> 68 * Most methods require the {@link android.Manifest.permission#BLUETOOTH} 69 * permission and some also require the 70 * {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 71 * 72 * <div class="special reference"> 73 * <h3>Developer Guides</h3> 74 * <p>For more information about using Bluetooth, read the 75 * <a href="{@docRoot}guide/topics/wireless/bluetooth.html">Bluetooth</a> developer guide.</p> 76 * </div> 77 * 78 * {@see BluetoothDevice} 79 * {@see BluetoothServerSocket} 80 */ 81 public final class BluetoothAdapter { 82 private static final String TAG = "BluetoothAdapter"; 83 private static final boolean DBG = true; 84 private static final boolean VDBG = false; 85 86 /** 87 * Sentinel error value for this class. Guaranteed to not equal any other 88 * integer constant in this class. Provided as a convenience for functions 89 * that require a sentinel error value, for example: 90 * <p><code>Intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, 91 * BluetoothAdapter.ERROR)</code> 92 */ 93 public static final int ERROR = Integer.MIN_VALUE; 94 95 /** 96 * Broadcast Action: The state of the local Bluetooth adapter has been 97 * changed. 98 * <p>For example, Bluetooth has been turned on or off. 99 * <p>Always contains the extra fields {@link #EXTRA_STATE} and {@link 100 * #EXTRA_PREVIOUS_STATE} containing the new and old states 101 * respectively. 102 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 103 */ 104 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 105 public static final String ACTION_STATE_CHANGED = 106 "android.bluetooth.adapter.action.STATE_CHANGED"; 107 108 /** 109 * Used as an int extra field in {@link #ACTION_STATE_CHANGED} 110 * intents to request the current power state. Possible values are: 111 * {@link #STATE_OFF}, 112 * {@link #STATE_TURNING_ON}, 113 * {@link #STATE_ON}, 114 * {@link #STATE_TURNING_OFF}, 115 */ 116 public static final String EXTRA_STATE = 117 "android.bluetooth.adapter.extra.STATE"; 118 /** 119 * Used as an int extra field in {@link #ACTION_STATE_CHANGED} 120 * intents to request the previous power state. Possible values are: 121 * {@link #STATE_OFF}, 122 * {@link #STATE_TURNING_ON}, 123 * {@link #STATE_ON}, 124 * {@link #STATE_TURNING_OFF}, 125 */ 126 public static final String EXTRA_PREVIOUS_STATE = 127 "android.bluetooth.adapter.extra.PREVIOUS_STATE"; 128 129 /** 130 * Indicates the local Bluetooth adapter is off. 131 */ 132 public static final int STATE_OFF = 10; 133 /** 134 * Indicates the local Bluetooth adapter is turning on. However local 135 * clients should wait for {@link #STATE_ON} before attempting to 136 * use the adapter. 137 */ 138 public static final int STATE_TURNING_ON = 11; 139 /** 140 * Indicates the local Bluetooth adapter is on, and ready for use. 141 */ 142 public static final int STATE_ON = 12; 143 /** 144 * Indicates the local Bluetooth adapter is turning off. Local clients 145 * should immediately attempt graceful disconnection of any remote links. 146 */ 147 public static final int STATE_TURNING_OFF = 13; 148 149 /** 150 * Activity Action: Show a system activity that requests discoverable mode. 151 * This activity will also request the user to turn on Bluetooth if it 152 * is not currently enabled. 153 * <p>Discoverable mode is equivalent to {@link 154 * #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. It allows remote devices to see 155 * this Bluetooth adapter when they perform a discovery. 156 * <p>For privacy, Android is not discoverable by default. 157 * <p>The sender of this Intent can optionally use extra field {@link 158 * #EXTRA_DISCOVERABLE_DURATION} to request the duration of 159 * discoverability. Currently the default duration is 120 seconds, and 160 * maximum duration is capped at 300 seconds for each request. 161 * <p>Notification of the result of this activity is posted using the 162 * {@link android.app.Activity#onActivityResult} callback. The 163 * <code>resultCode</code> 164 * will be the duration (in seconds) of discoverability or 165 * {@link android.app.Activity#RESULT_CANCELED} if the user rejected 166 * discoverability or an error has occurred. 167 * <p>Applications can also listen for {@link #ACTION_SCAN_MODE_CHANGED} 168 * for global notification whenever the scan mode changes. For example, an 169 * application can be notified when the device has ended discoverability. 170 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 171 */ 172 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 173 public static final String ACTION_REQUEST_DISCOVERABLE = 174 "android.bluetooth.adapter.action.REQUEST_DISCOVERABLE"; 175 176 /** 177 * Used as an optional int extra field in {@link 178 * #ACTION_REQUEST_DISCOVERABLE} intents to request a specific duration 179 * for discoverability in seconds. The current default is 120 seconds, and 180 * requests over 300 seconds will be capped. These values could change. 181 */ 182 public static final String EXTRA_DISCOVERABLE_DURATION = 183 "android.bluetooth.adapter.extra.DISCOVERABLE_DURATION"; 184 185 /** 186 * Activity Action: Show a system activity that allows the user to turn on 187 * Bluetooth. 188 * <p>This system activity will return once Bluetooth has completed turning 189 * on, or the user has decided not to turn Bluetooth on. 190 * <p>Notification of the result of this activity is posted using the 191 * {@link android.app.Activity#onActivityResult} callback. The 192 * <code>resultCode</code> 193 * will be {@link android.app.Activity#RESULT_OK} if Bluetooth has been 194 * turned on or {@link android.app.Activity#RESULT_CANCELED} if the user 195 * has rejected the request or an error has occurred. 196 * <p>Applications can also listen for {@link #ACTION_STATE_CHANGED} 197 * for global notification whenever Bluetooth is turned on or off. 198 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 199 */ 200 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 201 public static final String ACTION_REQUEST_ENABLE = 202 "android.bluetooth.adapter.action.REQUEST_ENABLE"; 203 204 /** 205 * Broadcast Action: Indicates the Bluetooth scan mode of the local Adapter 206 * has changed. 207 * <p>Always contains the extra fields {@link #EXTRA_SCAN_MODE} and {@link 208 * #EXTRA_PREVIOUS_SCAN_MODE} containing the new and old scan modes 209 * respectively. 210 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 211 */ 212 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 213 public static final String ACTION_SCAN_MODE_CHANGED = 214 "android.bluetooth.adapter.action.SCAN_MODE_CHANGED"; 215 216 /** 217 * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED} 218 * intents to request the current scan mode. Possible values are: 219 * {@link #SCAN_MODE_NONE}, 220 * {@link #SCAN_MODE_CONNECTABLE}, 221 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}, 222 */ 223 public static final String EXTRA_SCAN_MODE = "android.bluetooth.adapter.extra.SCAN_MODE"; 224 /** 225 * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED} 226 * intents to request the previous scan mode. Possible values are: 227 * {@link #SCAN_MODE_NONE}, 228 * {@link #SCAN_MODE_CONNECTABLE}, 229 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}, 230 */ 231 public static final String EXTRA_PREVIOUS_SCAN_MODE = 232 "android.bluetooth.adapter.extra.PREVIOUS_SCAN_MODE"; 233 234 /** 235 * Indicates that both inquiry scan and page scan are disabled on the local 236 * Bluetooth adapter. Therefore this device is neither discoverable 237 * nor connectable from remote Bluetooth devices. 238 */ 239 public static final int SCAN_MODE_NONE = 20; 240 /** 241 * Indicates that inquiry scan is disabled, but page scan is enabled on the 242 * local Bluetooth adapter. Therefore this device is not discoverable from 243 * remote Bluetooth devices, but is connectable from remote devices that 244 * have previously discovered this device. 245 */ 246 public static final int SCAN_MODE_CONNECTABLE = 21; 247 /** 248 * Indicates that both inquiry scan and page scan are enabled on the local 249 * Bluetooth adapter. Therefore this device is both discoverable and 250 * connectable from remote Bluetooth devices. 251 */ 252 public static final int SCAN_MODE_CONNECTABLE_DISCOVERABLE = 23; 253 254 255 /** 256 * Broadcast Action: The local Bluetooth adapter has started the remote 257 * device discovery process. 258 * <p>This usually involves an inquiry scan of about 12 seconds, followed 259 * by a page scan of each new device to retrieve its Bluetooth name. 260 * <p>Register for {@link BluetoothDevice#ACTION_FOUND} to be notified as 261 * remote Bluetooth devices are found. 262 * <p>Device discovery is a heavyweight procedure. New connections to 263 * remote Bluetooth devices should not be attempted while discovery is in 264 * progress, and existing connections will experience limited bandwidth 265 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 266 * discovery. 267 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 268 */ 269 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 270 public static final String ACTION_DISCOVERY_STARTED = 271 "android.bluetooth.adapter.action.DISCOVERY_STARTED"; 272 /** 273 * Broadcast Action: The local Bluetooth adapter has finished the device 274 * discovery process. 275 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 276 */ 277 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 278 public static final String ACTION_DISCOVERY_FINISHED = 279 "android.bluetooth.adapter.action.DISCOVERY_FINISHED"; 280 281 /** 282 * Broadcast Action: The local Bluetooth adapter has changed its friendly 283 * Bluetooth name. 284 * <p>This name is visible to remote Bluetooth devices. 285 * <p>Always contains the extra field {@link #EXTRA_LOCAL_NAME} containing 286 * the name. 287 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 288 */ 289 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 290 public static final String ACTION_LOCAL_NAME_CHANGED = 291 "android.bluetooth.adapter.action.LOCAL_NAME_CHANGED"; 292 /** 293 * Used as a String extra field in {@link #ACTION_LOCAL_NAME_CHANGED} 294 * intents to request the local Bluetooth name. 295 */ 296 public static final String EXTRA_LOCAL_NAME = "android.bluetooth.adapter.extra.LOCAL_NAME"; 297 298 /** 299 * Intent used to broadcast the change in connection state of the local 300 * Bluetooth adapter to a profile of the remote device. When the adapter is 301 * not connected to any profiles of any remote devices and it attempts a 302 * connection to a profile this intent will sent. Once connected, this intent 303 * will not be sent for any more connection attempts to any profiles of any 304 * remote device. When the adapter disconnects from the last profile its 305 * connected to of any remote device, this intent will be sent. 306 * 307 * <p> This intent is useful for applications that are only concerned about 308 * whether the local adapter is connected to any profile of any device and 309 * are not really concerned about which profile. For example, an application 310 * which displays an icon to display whether Bluetooth is connected or not 311 * can use this intent. 312 * 313 * <p>This intent will have 3 extras: 314 * {@link #EXTRA_CONNECTION_STATE} - The current connection state. 315 * {@link #EXTRA_PREVIOUS_CONNECTION_STATE}- The previous connection state. 316 * {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. 317 * 318 * {@link #EXTRA_CONNECTION_STATE} or {@link #EXTRA_PREVIOUS_CONNECTION_STATE} 319 * can be any of {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, 320 * {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}. 321 * 322 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 323 */ 324 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 325 public static final String ACTION_CONNECTION_STATE_CHANGED = 326 "android.bluetooth.adapter.action.CONNECTION_STATE_CHANGED"; 327 328 /** 329 * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED} 330 * 331 * This extra represents the current connection state. 332 */ 333 public static final String EXTRA_CONNECTION_STATE = 334 "android.bluetooth.adapter.extra.CONNECTION_STATE"; 335 336 /** 337 * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED} 338 * 339 * This extra represents the previous connection state. 340 */ 341 public static final String EXTRA_PREVIOUS_CONNECTION_STATE = 342 "android.bluetooth.adapter.extra.PREVIOUS_CONNECTION_STATE"; 343 344 /** The profile is in disconnected state */ 345 public static final int STATE_DISCONNECTED = 0; 346 /** The profile is in connecting state */ 347 public static final int STATE_CONNECTING = 1; 348 /** The profile is in connected state */ 349 public static final int STATE_CONNECTED = 2; 350 /** The profile is in disconnecting state */ 351 public static final int STATE_DISCONNECTING = 3; 352 353 /** @hide */ 354 public static final String BLUETOOTH_MANAGER_SERVICE = "bluetooth_manager"; 355 356 private static final int ADDRESS_LENGTH = 17; 357 358 /** 359 * Lazily initialized singleton. Guaranteed final after first object 360 * constructed. 361 */ 362 private static BluetoothAdapter sAdapter; 363 364 private final IBluetoothManager mManagerService; 365 private IBluetooth mService; 366 367 private final Map<LeScanCallback, GattCallbackWrapper> mLeScanClients; 368 369 /** 370 * Get a handle to the default local Bluetooth adapter. 371 * <p>Currently Android only supports one Bluetooth adapter, but the API 372 * could be extended to support more. This will always return the default 373 * adapter. 374 * @return the default local adapter, or null if Bluetooth is not supported 375 * on this hardware platform 376 */ 377 public static synchronized BluetoothAdapter getDefaultAdapter() { 378 if (sAdapter == null) { 379 IBinder b = ServiceManager.getService(BLUETOOTH_MANAGER_SERVICE); 380 if (b != null) { 381 IBluetoothManager managerService = IBluetoothManager.Stub.asInterface(b); 382 sAdapter = new BluetoothAdapter(managerService); 383 } else { 384 Log.e(TAG, "Bluetooth binder is null"); 385 } 386 } 387 return sAdapter; 388 } 389 390 /** 391 * Use {@link #getDefaultAdapter} to get the BluetoothAdapter instance. 392 */ 393 BluetoothAdapter(IBluetoothManager managerService) { 394 395 if (managerService == null) { 396 throw new IllegalArgumentException("bluetooth manager service is null"); 397 } 398 try { 399 mService = managerService.registerAdapter(mManagerCallback); 400 } catch (RemoteException e) {Log.e(TAG, "", e);} 401 mManagerService = managerService; 402 mLeScanClients = new HashMap<LeScanCallback, GattCallbackWrapper>(); 403 } 404 405 /** 406 * Get a {@link BluetoothDevice} object for the given Bluetooth hardware 407 * address. 408 * <p>Valid Bluetooth hardware addresses must be upper case, in a format 409 * such as "00:11:22:33:AA:BB". The helper {@link #checkBluetoothAddress} is 410 * available to validate a Bluetooth address. 411 * <p>A {@link BluetoothDevice} will always be returned for a valid 412 * hardware address, even if this adapter has never seen that device. 413 * 414 * @param address valid Bluetooth MAC address 415 * @throws IllegalArgumentException if address is invalid 416 */ 417 public BluetoothDevice getRemoteDevice(String address) { 418 return new BluetoothDevice(address); 419 } 420 421 /** 422 * Get a {@link BluetoothDevice} object for the given Bluetooth hardware 423 * address. 424 * <p>Valid Bluetooth hardware addresses must be 6 bytes. This method 425 * expects the address in network byte order (MSB first). 426 * <p>A {@link BluetoothDevice} will always be returned for a valid 427 * hardware address, even if this adapter has never seen that device. 428 * 429 * @param address Bluetooth MAC address (6 bytes) 430 * @throws IllegalArgumentException if address is invalid 431 */ 432 public BluetoothDevice getRemoteDevice(byte[] address) { 433 if (address == null || address.length != 6) { 434 throw new IllegalArgumentException("Bluetooth address must have 6 bytes"); 435 } 436 return new BluetoothDevice(String.format(Locale.US, "%02X:%02X:%02X:%02X:%02X:%02X", 437 address[0], address[1], address[2], address[3], address[4], address[5])); 438 } 439 440 /** 441 * Return true if Bluetooth is currently enabled and ready for use. 442 * <p>Equivalent to: 443 * <code>getBluetoothState() == STATE_ON</code> 444 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 445 * 446 * @return true if the local adapter is turned on 447 */ 448 public boolean isEnabled() { 449 450 try { 451 synchronized(mManagerCallback) { 452 if (mService != null) return mService.isEnabled(); 453 } 454 } catch (RemoteException e) {Log.e(TAG, "", e);} 455 return false; 456 } 457 458 /** 459 * Get the current state of the local Bluetooth adapter. 460 * <p>Possible return values are 461 * {@link #STATE_OFF}, 462 * {@link #STATE_TURNING_ON}, 463 * {@link #STATE_ON}, 464 * {@link #STATE_TURNING_OFF}. 465 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 466 * 467 * @return current state of Bluetooth adapter 468 */ 469 public int getState() { 470 try { 471 synchronized(mManagerCallback) { 472 if (mService != null) 473 { 474 int state= mService.getState(); 475 if (VDBG) Log.d(TAG, "" + hashCode() + ": getState(). Returning " + state); 476 return state; 477 } 478 // TODO(BT) there might be a small gap during STATE_TURNING_ON that 479 // mService is null, handle that case 480 } 481 } catch (RemoteException e) {Log.e(TAG, "", e);} 482 if (DBG) Log.d(TAG, "" + hashCode() + ": getState() : mService = null. Returning STATE_OFF"); 483 return STATE_OFF; 484 } 485 486 /** 487 * Turn on the local Bluetooth adapter—do not use without explicit 488 * user action to turn on Bluetooth. 489 * <p>This powers on the underlying Bluetooth hardware, and starts all 490 * Bluetooth system services. 491 * <p class="caution"><strong>Bluetooth should never be enabled without 492 * direct user consent</strong>. If you want to turn on Bluetooth in order 493 * to create a wireless connection, you should use the {@link 494 * #ACTION_REQUEST_ENABLE} Intent, which will raise a dialog that requests 495 * user permission to turn on Bluetooth. The {@link #enable()} method is 496 * provided only for applications that include a user interface for changing 497 * system settings, such as a "power manager" app.</p> 498 * <p>This is an asynchronous call: it will return immediately, and 499 * clients should listen for {@link #ACTION_STATE_CHANGED} 500 * to be notified of subsequent adapter state changes. If this call returns 501 * true, then the adapter state will immediately transition from {@link 502 * #STATE_OFF} to {@link #STATE_TURNING_ON}, and some time 503 * later transition to either {@link #STATE_OFF} or {@link 504 * #STATE_ON}. If this call returns false then there was an 505 * immediate problem that will prevent the adapter from being turned on - 506 * such as Airplane mode, or the adapter is already turned on. 507 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 508 * permission 509 * 510 * @return true to indicate adapter startup has begun, or false on 511 * immediate error 512 */ 513 public boolean enable() { 514 if (isEnabled() == true){ 515 if (DBG) Log.d(TAG, "enable(): BT is already enabled..!"); 516 return true; 517 } 518 try { 519 return mManagerService.enable(); 520 } catch (RemoteException e) {Log.e(TAG, "", e);} 521 return false; 522 } 523 524 /** 525 * Turn off the local Bluetooth adapter—do not use without explicit 526 * user action to turn off Bluetooth. 527 * <p>This gracefully shuts down all Bluetooth connections, stops Bluetooth 528 * system services, and powers down the underlying Bluetooth hardware. 529 * <p class="caution"><strong>Bluetooth should never be disabled without 530 * direct user consent</strong>. The {@link #disable()} method is 531 * provided only for applications that include a user interface for changing 532 * system settings, such as a "power manager" app.</p> 533 * <p>This is an asynchronous call: it will return immediately, and 534 * clients should listen for {@link #ACTION_STATE_CHANGED} 535 * to be notified of subsequent adapter state changes. If this call returns 536 * true, then the adapter state will immediately transition from {@link 537 * #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time 538 * later transition to either {@link #STATE_OFF} or {@link 539 * #STATE_ON}. If this call returns false then there was an 540 * immediate problem that will prevent the adapter from being turned off - 541 * such as the adapter already being turned off. 542 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 543 * permission 544 * 545 * @return true to indicate adapter shutdown has begun, or false on 546 * immediate error 547 */ 548 public boolean disable() { 549 try { 550 return mManagerService.disable(true); 551 } catch (RemoteException e) {Log.e(TAG, "", e);} 552 return false; 553 } 554 555 /** 556 * Turn off the local Bluetooth adapter and don't persist the setting. 557 * 558 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 559 * permission 560 * 561 * @return true to indicate adapter shutdown has begun, or false on 562 * immediate error 563 * @hide 564 */ 565 public boolean disable(boolean persist) { 566 567 try { 568 return mManagerService.disable(persist); 569 } catch (RemoteException e) {Log.e(TAG, "", e);} 570 return false; 571 } 572 573 /** 574 * Returns the hardware address of the local Bluetooth adapter. 575 * <p>For example, "00:11:22:AA:BB:CC". 576 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 577 * 578 * @return Bluetooth hardware address as string 579 */ 580 public String getAddress() { 581 try { 582 return mManagerService.getAddress(); 583 } catch (RemoteException e) {Log.e(TAG, "", e);} 584 return null; 585 } 586 587 /** 588 * Get the friendly Bluetooth name of the local Bluetooth adapter. 589 * <p>This name is visible to remote Bluetooth devices. 590 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 591 * 592 * @return the Bluetooth name, or null on error 593 */ 594 public String getName() { 595 try { 596 return mManagerService.getName(); 597 } catch (RemoteException e) {Log.e(TAG, "", e);} 598 return null; 599 } 600 601 /** 602 * enable or disable Bluetooth HCI snoop log. 603 * 604 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 605 * permission 606 * 607 * @return true to indicate configure HCI log successfully, or false on 608 * immediate error 609 * @hide 610 */ 611 public boolean configHciSnoopLog(boolean enable) { 612 try { 613 synchronized(mManagerCallback) { 614 if (mService != null) return mService.configHciSnoopLog(enable); 615 } 616 } catch (RemoteException e) {Log.e(TAG, "", e);} 617 return false; 618 } 619 620 /** 621 * Get the UUIDs supported by the local Bluetooth adapter. 622 * 623 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 624 * 625 * @return the UUIDs supported by the local Bluetooth Adapter. 626 * @hide 627 */ 628 public ParcelUuid[] getUuids() { 629 if (getState() != STATE_ON) return null; 630 try { 631 synchronized(mManagerCallback) { 632 if (mService != null) return mService.getUuids(); 633 } 634 } catch (RemoteException e) {Log.e(TAG, "", e);} 635 return null; 636 } 637 638 /** 639 * Set the friendly Bluetooth name of the local Bluetooth adapter. 640 * <p>This name is visible to remote Bluetooth devices. 641 * <p>Valid Bluetooth names are a maximum of 248 bytes using UTF-8 642 * encoding, although many remote devices can only display the first 643 * 40 characters, and some may be limited to just 20. 644 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 645 * will return false. After turning on Bluetooth, 646 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 647 * to get the updated value. 648 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} 649 * 650 * @param name a valid Bluetooth name 651 * @return true if the name was set, false otherwise 652 */ 653 public boolean setName(String name) { 654 if (getState() != STATE_ON) return false; 655 try { 656 synchronized(mManagerCallback) { 657 if (mService != null) return mService.setName(name); 658 } 659 } catch (RemoteException e) {Log.e(TAG, "", e);} 660 return false; 661 } 662 663 /** 664 * Get the current Bluetooth scan mode of the local Bluetooth adapter. 665 * <p>The Bluetooth scan mode determines if the local adapter is 666 * connectable and/or discoverable from remote Bluetooth devices. 667 * <p>Possible values are: 668 * {@link #SCAN_MODE_NONE}, 669 * {@link #SCAN_MODE_CONNECTABLE}, 670 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. 671 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 672 * will return {@link #SCAN_MODE_NONE}. After turning on Bluetooth, 673 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 674 * to get the updated value. 675 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 676 * 677 * @return scan mode 678 */ 679 public int getScanMode() { 680 if (getState() != STATE_ON) return SCAN_MODE_NONE; 681 try { 682 synchronized(mManagerCallback) { 683 if (mService != null) return mService.getScanMode(); 684 } 685 } catch (RemoteException e) {Log.e(TAG, "", e);} 686 return SCAN_MODE_NONE; 687 } 688 689 /** 690 * Set the Bluetooth scan mode of the local Bluetooth adapter. 691 * <p>The Bluetooth scan mode determines if the local adapter is 692 * connectable and/or discoverable from remote Bluetooth devices. 693 * <p>For privacy reasons, discoverable mode is automatically turned off 694 * after <code>duration</code> seconds. For example, 120 seconds should be 695 * enough for a remote device to initiate and complete its discovery 696 * process. 697 * <p>Valid scan mode values are: 698 * {@link #SCAN_MODE_NONE}, 699 * {@link #SCAN_MODE_CONNECTABLE}, 700 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. 701 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 702 * will return false. After turning on Bluetooth, 703 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 704 * to get the updated value. 705 * <p>Requires {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} 706 * <p>Applications cannot set the scan mode. They should use 707 * <code>startActivityForResult( 708 * BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE}) 709 * </code>instead. 710 * 711 * @param mode valid scan mode 712 * @param duration time in seconds to apply scan mode, only used for 713 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE} 714 * @return true if the scan mode was set, false otherwise 715 * @hide 716 */ 717 public boolean setScanMode(int mode, int duration) { 718 if (getState() != STATE_ON) return false; 719 try { 720 synchronized(mManagerCallback) { 721 if (mService != null) return mService.setScanMode(mode, duration); 722 } 723 } catch (RemoteException e) {Log.e(TAG, "", e);} 724 return false; 725 } 726 727 /** @hide */ 728 public boolean setScanMode(int mode) { 729 if (getState() != STATE_ON) return false; 730 /* getDiscoverableTimeout() to use the latest from NV than use 0 */ 731 return setScanMode(mode, getDiscoverableTimeout()); 732 } 733 734 /** @hide */ 735 public int getDiscoverableTimeout() { 736 if (getState() != STATE_ON) return -1; 737 try { 738 synchronized(mManagerCallback) { 739 if (mService != null) return mService.getDiscoverableTimeout(); 740 } 741 } catch (RemoteException e) {Log.e(TAG, "", e);} 742 return -1; 743 } 744 745 /** @hide */ 746 public void setDiscoverableTimeout(int timeout) { 747 if (getState() != STATE_ON) return; 748 try { 749 synchronized(mManagerCallback) { 750 if (mService != null) mService.setDiscoverableTimeout(timeout); 751 } 752 } catch (RemoteException e) {Log.e(TAG, "", e);} 753 } 754 755 /** 756 * Start the remote device discovery process. 757 * <p>The discovery process usually involves an inquiry scan of about 12 758 * seconds, followed by a page scan of each new device to retrieve its 759 * Bluetooth name. 760 * <p>This is an asynchronous call, it will return immediately. Register 761 * for {@link #ACTION_DISCOVERY_STARTED} and {@link 762 * #ACTION_DISCOVERY_FINISHED} intents to determine exactly when the 763 * discovery starts and completes. Register for {@link 764 * BluetoothDevice#ACTION_FOUND} to be notified as remote Bluetooth devices 765 * are found. 766 * <p>Device discovery is a heavyweight procedure. New connections to 767 * remote Bluetooth devices should not be attempted while discovery is in 768 * progress, and existing connections will experience limited bandwidth 769 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 770 * discovery. Discovery is not managed by the Activity, 771 * but is run as a system service, so an application should always call 772 * {@link BluetoothAdapter#cancelDiscovery()} even if it 773 * did not directly request a discovery, just to be sure. 774 * <p>Device discovery will only find remote devices that are currently 775 * <i>discoverable</i> (inquiry scan enabled). Many Bluetooth devices are 776 * not discoverable by default, and need to be entered into a special mode. 777 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 778 * will return false. After turning on Bluetooth, 779 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 780 * to get the updated value. 781 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. 782 * 783 * @return true on success, false on error 784 */ 785 public boolean startDiscovery() { 786 if (getState() != STATE_ON) return false; 787 try { 788 synchronized(mManagerCallback) { 789 if (mService != null) return mService.startDiscovery(); 790 } 791 } catch (RemoteException e) {Log.e(TAG, "", e);} 792 return false; 793 } 794 795 /** 796 * Cancel the current device discovery process. 797 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. 798 * <p>Because discovery is a heavyweight procedure for the Bluetooth 799 * adapter, this method should always be called before attempting to connect 800 * to a remote device with {@link 801 * android.bluetooth.BluetoothSocket#connect()}. Discovery is not managed by 802 * the Activity, but is run as a system service, so an application should 803 * always call cancel discovery even if it did not directly request a 804 * discovery, just to be sure. 805 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 806 * will return false. After turning on Bluetooth, 807 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 808 * to get the updated value. 809 * 810 * @return true on success, false on error 811 */ 812 public boolean cancelDiscovery() { 813 if (getState() != STATE_ON) return false; 814 try { 815 synchronized(mManagerCallback) { 816 if (mService != null) return mService.cancelDiscovery(); 817 } 818 } catch (RemoteException e) {Log.e(TAG, "", e);} 819 return false; 820 } 821 822 /** 823 * Return true if the local Bluetooth adapter is currently in the device 824 * discovery process. 825 * <p>Device discovery is a heavyweight procedure. New connections to 826 * remote Bluetooth devices should not be attempted while discovery is in 827 * progress, and existing connections will experience limited bandwidth 828 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 829 * discovery. 830 * <p>Applications can also register for {@link #ACTION_DISCOVERY_STARTED} 831 * or {@link #ACTION_DISCOVERY_FINISHED} to be notified when discovery 832 * starts or completes. 833 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 834 * will return false. After turning on Bluetooth, 835 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 836 * to get the updated value. 837 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 838 * 839 * @return true if discovering 840 */ 841 public boolean isDiscovering() { 842 if (getState() != STATE_ON) return false; 843 try { 844 synchronized(mManagerCallback) { 845 if (mService != null ) return mService.isDiscovering(); 846 } 847 } catch (RemoteException e) {Log.e(TAG, "", e);} 848 return false; 849 } 850 851 /** 852 * Return the set of {@link BluetoothDevice} objects that are bonded 853 * (paired) to the local adapter. 854 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 855 * will return an empty set. After turning on Bluetooth, 856 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 857 * to get the updated value. 858 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 859 * 860 * @return unmodifiable set of {@link BluetoothDevice}, or null on error 861 */ 862 public Set<BluetoothDevice> getBondedDevices() { 863 if (getState() != STATE_ON) { 864 return toDeviceSet(new BluetoothDevice[0]); 865 } 866 try { 867 synchronized(mManagerCallback) { 868 if (mService != null) return toDeviceSet(mService.getBondedDevices()); 869 } 870 return toDeviceSet(new BluetoothDevice[0]); 871 } catch (RemoteException e) {Log.e(TAG, "", e);} 872 return null; 873 } 874 875 /** 876 * Get the current connection state of the local Bluetooth adapter. 877 * This can be used to check whether the local Bluetooth adapter is connected 878 * to any profile of any other remote Bluetooth Device. 879 * 880 * <p> Use this function along with {@link #ACTION_CONNECTION_STATE_CHANGED} 881 * intent to get the connection state of the adapter. 882 * 883 * @return One of {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTED}, 884 * {@link #STATE_CONNECTING} or {@link #STATE_DISCONNECTED} 885 * 886 * @hide 887 */ 888 public int getConnectionState() { 889 if (getState() != STATE_ON) return BluetoothAdapter.STATE_DISCONNECTED; 890 try { 891 synchronized(mManagerCallback) { 892 if (mService != null) return mService.getAdapterConnectionState(); 893 } 894 } catch (RemoteException e) {Log.e(TAG, "getConnectionState:", e);} 895 return BluetoothAdapter.STATE_DISCONNECTED; 896 } 897 898 /** 899 * Get the current connection state of a profile. 900 * This function can be used to check whether the local Bluetooth adapter 901 * is connected to any remote device for a specific profile. 902 * Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET}, 903 * {@link BluetoothProfile#A2DP}. 904 * 905 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 906 * 907 * <p> Return value can be one of 908 * {@link BluetoothProfile#STATE_DISCONNECTED}, 909 * {@link BluetoothProfile#STATE_CONNECTING}, 910 * {@link BluetoothProfile#STATE_CONNECTED}, 911 * {@link BluetoothProfile#STATE_DISCONNECTING} 912 */ 913 public int getProfileConnectionState(int profile) { 914 if (getState() != STATE_ON) return BluetoothProfile.STATE_DISCONNECTED; 915 try { 916 synchronized(mManagerCallback) { 917 if (mService != null) return mService.getProfileConnectionState(profile); 918 } 919 } catch (RemoteException e) { 920 Log.e(TAG, "getProfileConnectionState:", e); 921 } 922 return BluetoothProfile.STATE_DISCONNECTED; 923 } 924 925 /** 926 * Create a listening, secure RFCOMM Bluetooth socket. 927 * <p>A remote device connecting to this socket will be authenticated and 928 * communication on this socket will be encrypted. 929 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 930 * connections from a listening {@link BluetoothServerSocket}. 931 * <p>Valid RFCOMM channels are in range 1 to 30. 932 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} 933 * @param channel RFCOMM channel to listen on 934 * @return a listening RFCOMM BluetoothServerSocket 935 * @throws IOException on error, for example Bluetooth not available, or 936 * insufficient permissions, or channel in use. 937 * @hide 938 */ 939 public BluetoothServerSocket listenUsingRfcommOn(int channel) throws IOException { 940 BluetoothServerSocket socket = new BluetoothServerSocket( 941 BluetoothSocket.TYPE_RFCOMM, true, true, channel); 942 int errno = socket.mSocket.bindListen(); 943 if (errno != 0) { 944 //TODO(BT): Throw the same exception error code 945 // that the previous code was using. 946 //socket.mSocket.throwErrnoNative(errno); 947 throw new IOException("Error: " + errno); 948 } 949 return socket; 950 } 951 952 /** 953 * Create a listening, secure RFCOMM Bluetooth socket with Service Record. 954 * <p>A remote device connecting to this socket will be authenticated and 955 * communication on this socket will be encrypted. 956 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 957 * connections from a listening {@link BluetoothServerSocket}. 958 * <p>The system will assign an unused RFCOMM channel to listen on. 959 * <p>The system will also register a Service Discovery 960 * Protocol (SDP) record with the local SDP server containing the specified 961 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 962 * can use the same UUID to query our SDP server and discover which channel 963 * to connect to. This SDP record will be removed when this socket is 964 * closed, or if this application closes unexpectedly. 965 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 966 * connect to this socket from another device using the same {@link UUID}. 967 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 968 * @param name service name for SDP record 969 * @param uuid uuid for SDP record 970 * @return a listening RFCOMM BluetoothServerSocket 971 * @throws IOException on error, for example Bluetooth not available, or 972 * insufficient permissions, or channel in use. 973 */ 974 public BluetoothServerSocket listenUsingRfcommWithServiceRecord(String name, UUID uuid) 975 throws IOException { 976 return createNewRfcommSocketAndRecord(name, uuid, true, true); 977 } 978 979 /** 980 * Create a listening, insecure RFCOMM Bluetooth socket with Service Record. 981 * <p>The link key is not required to be authenticated, i.e the communication may be 982 * vulnerable to Man In the Middle attacks. For Bluetooth 2.1 devices, 983 * the link will be encrypted, as encryption is mandartory. 984 * For legacy devices (pre Bluetooth 2.1 devices) the link will not 985 * be encrypted. Use {@link #listenUsingRfcommWithServiceRecord}, if an 986 * encrypted and authenticated communication channel is desired. 987 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 988 * connections from a listening {@link BluetoothServerSocket}. 989 * <p>The system will assign an unused RFCOMM channel to listen on. 990 * <p>The system will also register a Service Discovery 991 * Protocol (SDP) record with the local SDP server containing the specified 992 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 993 * can use the same UUID to query our SDP server and discover which channel 994 * to connect to. This SDP record will be removed when this socket is 995 * closed, or if this application closes unexpectedly. 996 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 997 * connect to this socket from another device using the same {@link UUID}. 998 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 999 * @param name service name for SDP record 1000 * @param uuid uuid for SDP record 1001 * @return a listening RFCOMM BluetoothServerSocket 1002 * @throws IOException on error, for example Bluetooth not available, or 1003 * insufficient permissions, or channel in use. 1004 */ 1005 public BluetoothServerSocket listenUsingInsecureRfcommWithServiceRecord(String name, UUID uuid) 1006 throws IOException { 1007 return createNewRfcommSocketAndRecord(name, uuid, false, false); 1008 } 1009 1010 /** 1011 * Create a listening, encrypted, 1012 * RFCOMM Bluetooth socket with Service Record. 1013 * <p>The link will be encrypted, but the link key is not required to be authenticated 1014 * i.e the communication is vulnerable to Man In the Middle attacks. Use 1015 * {@link #listenUsingRfcommWithServiceRecord}, to ensure an authenticated link key. 1016 * <p> Use this socket if authentication of link key is not possible. 1017 * For example, for Bluetooth 2.1 devices, if any of the devices does not have 1018 * an input and output capability or just has the ability to display a numeric key, 1019 * a secure socket connection is not possible and this socket can be used. 1020 * Use {@link #listenUsingInsecureRfcommWithServiceRecord}, if encryption is not required. 1021 * For Bluetooth 2.1 devices, the link will be encrypted, as encryption is mandartory. 1022 * For more details, refer to the Security Model section 5.2 (vol 3) of 1023 * Bluetooth Core Specification version 2.1 + EDR. 1024 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 1025 * connections from a listening {@link BluetoothServerSocket}. 1026 * <p>The system will assign an unused RFCOMM channel to listen on. 1027 * <p>The system will also register a Service Discovery 1028 * Protocol (SDP) record with the local SDP server containing the specified 1029 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 1030 * can use the same UUID to query our SDP server and discover which channel 1031 * to connect to. This SDP record will be removed when this socket is 1032 * closed, or if this application closes unexpectedly. 1033 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 1034 * connect to this socket from another device using the same {@link UUID}. 1035 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1036 * @param name service name for SDP record 1037 * @param uuid uuid for SDP record 1038 * @return a listening RFCOMM BluetoothServerSocket 1039 * @throws IOException on error, for example Bluetooth not available, or 1040 * insufficient permissions, or channel in use. 1041 * @hide 1042 */ 1043 public BluetoothServerSocket listenUsingEncryptedRfcommWithServiceRecord( 1044 String name, UUID uuid) throws IOException { 1045 return createNewRfcommSocketAndRecord(name, uuid, false, true); 1046 } 1047 1048 1049 private BluetoothServerSocket createNewRfcommSocketAndRecord(String name, UUID uuid, 1050 boolean auth, boolean encrypt) throws IOException { 1051 BluetoothServerSocket socket; 1052 socket = new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, auth, 1053 encrypt, new ParcelUuid(uuid)); 1054 socket.setServiceName(name); 1055 int errno = socket.mSocket.bindListen(); 1056 if (errno != 0) { 1057 //TODO(BT): Throw the same exception error code 1058 // that the previous code was using. 1059 //socket.mSocket.throwErrnoNative(errno); 1060 throw new IOException("Error: " + errno); 1061 } 1062 return socket; 1063 } 1064 1065 /** 1066 * Construct an unencrypted, unauthenticated, RFCOMM server socket. 1067 * Call #accept to retrieve connections to this socket. 1068 * @return An RFCOMM BluetoothServerSocket 1069 * @throws IOException On error, for example Bluetooth not available, or 1070 * insufficient permissions. 1071 * @hide 1072 */ 1073 public BluetoothServerSocket listenUsingInsecureRfcommOn(int port) throws IOException { 1074 BluetoothServerSocket socket = new BluetoothServerSocket( 1075 BluetoothSocket.TYPE_RFCOMM, false, false, port); 1076 int errno = socket.mSocket.bindListen(); 1077 if (errno != 0) { 1078 //TODO(BT): Throw the same exception error code 1079 // that the previous code was using. 1080 //socket.mSocket.throwErrnoNative(errno); 1081 throw new IOException("Error: " + errno); 1082 } 1083 return socket; 1084 } 1085 1086 /** 1087 * Construct an encrypted, RFCOMM server socket. 1088 * Call #accept to retrieve connections to this socket. 1089 * @return An RFCOMM BluetoothServerSocket 1090 * @throws IOException On error, for example Bluetooth not available, or 1091 * insufficient permissions. 1092 * @hide 1093 */ 1094 public BluetoothServerSocket listenUsingEncryptedRfcommOn(int port) 1095 throws IOException { 1096 BluetoothServerSocket socket = new BluetoothServerSocket( 1097 BluetoothSocket.TYPE_RFCOMM, false, true, port); 1098 int errno = socket.mSocket.bindListen(); 1099 if (errno < 0) { 1100 //TODO(BT): Throw the same exception error code 1101 // that the previous code was using. 1102 //socket.mSocket.throwErrnoNative(errno); 1103 throw new IOException("Error: " + errno); 1104 } 1105 return socket; 1106 } 1107 1108 /** 1109 * Construct a SCO server socket. 1110 * Call #accept to retrieve connections to this socket. 1111 * @return A SCO BluetoothServerSocket 1112 * @throws IOException On error, for example Bluetooth not available, or 1113 * insufficient permissions. 1114 * @hide 1115 */ 1116 public static BluetoothServerSocket listenUsingScoOn() throws IOException { 1117 BluetoothServerSocket socket = new BluetoothServerSocket( 1118 BluetoothSocket.TYPE_SCO, false, false, -1); 1119 int errno = socket.mSocket.bindListen(); 1120 if (errno < 0) { 1121 //TODO(BT): Throw the same exception error code 1122 // that the previous code was using. 1123 //socket.mSocket.throwErrnoNative(errno); 1124 } 1125 return socket; 1126 } 1127 1128 /** 1129 * Read the local Out of Band Pairing Data 1130 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1131 * 1132 * @return Pair<byte[], byte[]> of Hash and Randomizer 1133 * 1134 * @hide 1135 */ 1136 public Pair<byte[], byte[]> readOutOfBandData() { 1137 if (getState() != STATE_ON) return null; 1138 //TODO(BT 1139 /* 1140 try { 1141 byte[] hash; 1142 byte[] randomizer; 1143 1144 byte[] ret = mService.readOutOfBandData(); 1145 1146 if (ret == null || ret.length != 32) return null; 1147 1148 hash = Arrays.copyOfRange(ret, 0, 16); 1149 randomizer = Arrays.copyOfRange(ret, 16, 32); 1150 1151 if (DBG) { 1152 Log.d(TAG, "readOutOfBandData:" + Arrays.toString(hash) + 1153 ":" + Arrays.toString(randomizer)); 1154 } 1155 return new Pair<byte[], byte[]>(hash, randomizer); 1156 1157 } catch (RemoteException e) {Log.e(TAG, "", e);}*/ 1158 return null; 1159 } 1160 1161 /** 1162 * Get the profile proxy object associated with the profile. 1163 * 1164 * <p>Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET}, 1165 * {@link BluetoothProfile#A2DP}, {@link BluetoothProfile#GATT}, or 1166 * {@link BluetoothProfile#GATT_SERVER}. Clients must implement 1167 * {@link BluetoothProfile.ServiceListener} to get notified of 1168 * the connection status and to get the proxy object. 1169 * 1170 * @param context Context of the application 1171 * @param listener The service Listener for connection callbacks. 1172 * @param profile The Bluetooth profile; either {@link BluetoothProfile#HEALTH}, 1173 * {@link BluetoothProfile#HEADSET} or {@link BluetoothProfile#A2DP}. 1174 * @return true on success, false on error 1175 */ 1176 public boolean getProfileProxy(Context context, BluetoothProfile.ServiceListener listener, 1177 int profile) { 1178 if (context == null || listener == null) return false; 1179 1180 if (profile == BluetoothProfile.HEADSET) { 1181 BluetoothHeadset headset = new BluetoothHeadset(context, listener); 1182 return true; 1183 } else if (profile == BluetoothProfile.A2DP) { 1184 BluetoothA2dp a2dp = new BluetoothA2dp(context, listener); 1185 return true; 1186 } else if (profile == BluetoothProfile.INPUT_DEVICE) { 1187 BluetoothInputDevice iDev = new BluetoothInputDevice(context, listener); 1188 return true; 1189 } else if (profile == BluetoothProfile.PAN) { 1190 BluetoothPan pan = new BluetoothPan(context, listener); 1191 return true; 1192 } else if (profile == BluetoothProfile.HEALTH) { 1193 BluetoothHealth health = new BluetoothHealth(context, listener); 1194 return true; 1195 } else if (profile == BluetoothProfile.MAP) { 1196 BluetoothMap map = new BluetoothMap(context, listener); 1197 return true; 1198 } else { 1199 return false; 1200 } 1201 } 1202 1203 /** 1204 * Close the connection of the profile proxy to the Service. 1205 * 1206 * <p> Clients should call this when they are no longer using 1207 * the proxy obtained from {@link #getProfileProxy}. 1208 * Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET} or 1209 * {@link BluetoothProfile#A2DP} 1210 * 1211 * @param profile 1212 * @param proxy Profile proxy object 1213 */ 1214 public void closeProfileProxy(int profile, BluetoothProfile proxy) { 1215 if (proxy == null) return; 1216 1217 switch (profile) { 1218 case BluetoothProfile.HEADSET: 1219 BluetoothHeadset headset = (BluetoothHeadset)proxy; 1220 headset.close(); 1221 break; 1222 case BluetoothProfile.A2DP: 1223 BluetoothA2dp a2dp = (BluetoothA2dp)proxy; 1224 a2dp.close(); 1225 break; 1226 case BluetoothProfile.INPUT_DEVICE: 1227 BluetoothInputDevice iDev = (BluetoothInputDevice)proxy; 1228 iDev.close(); 1229 break; 1230 case BluetoothProfile.PAN: 1231 BluetoothPan pan = (BluetoothPan)proxy; 1232 pan.close(); 1233 break; 1234 case BluetoothProfile.HEALTH: 1235 BluetoothHealth health = (BluetoothHealth)proxy; 1236 health.close(); 1237 break; 1238 case BluetoothProfile.GATT: 1239 BluetoothGatt gatt = (BluetoothGatt)proxy; 1240 gatt.close(); 1241 break; 1242 case BluetoothProfile.GATT_SERVER: 1243 BluetoothGattServer gattServer = (BluetoothGattServer)proxy; 1244 gattServer.close(); 1245 break; 1246 case BluetoothProfile.MAP: 1247 BluetoothMap map = (BluetoothMap)proxy; 1248 map.close(); 1249 break; 1250 } 1251 } 1252 1253 final private IBluetoothManagerCallback mManagerCallback = 1254 new IBluetoothManagerCallback.Stub() { 1255 public void onBluetoothServiceUp(IBluetooth bluetoothService) { 1256 if (VDBG) Log.d(TAG, "onBluetoothServiceUp: " + bluetoothService); 1257 synchronized (mManagerCallback) { 1258 mService = bluetoothService; 1259 for (IBluetoothManagerCallback cb : mProxyServiceStateCallbacks ){ 1260 try { 1261 if (cb != null) { 1262 cb.onBluetoothServiceUp(bluetoothService); 1263 } else { 1264 Log.d(TAG, "onBluetoothServiceUp: cb is null!!!"); 1265 } 1266 } catch (Exception e) { Log.e(TAG,"",e);} 1267 } 1268 } 1269 } 1270 1271 public void onBluetoothServiceDown() { 1272 if (VDBG) Log.d(TAG, "onBluetoothServiceDown: " + mService); 1273 synchronized (mManagerCallback) { 1274 mService = null; 1275 for (IBluetoothManagerCallback cb : mProxyServiceStateCallbacks ){ 1276 try { 1277 if (cb != null) { 1278 cb.onBluetoothServiceDown(); 1279 } else { 1280 Log.d(TAG, "onBluetoothServiceDown: cb is null!!!"); 1281 } 1282 } catch (Exception e) { Log.e(TAG,"",e);} 1283 } 1284 } 1285 } 1286 }; 1287 1288 /** 1289 * Enable the Bluetooth Adapter, but don't auto-connect devices 1290 * and don't persist state. Only for use by system applications. 1291 * @hide 1292 */ 1293 public boolean enableNoAutoConnect() { 1294 if (isEnabled() == true){ 1295 if (DBG) Log.d(TAG, "enableNoAutoConnect(): BT is already enabled..!"); 1296 return true; 1297 } 1298 try { 1299 return mManagerService.enableNoAutoConnect(); 1300 } catch (RemoteException e) {Log.e(TAG, "", e);} 1301 return false; 1302 } 1303 1304 /** 1305 * Enable control of the Bluetooth Adapter for a single application. 1306 * 1307 * <p>Some applications need to use Bluetooth for short periods of time to 1308 * transfer data but don't want all the associated implications like 1309 * automatic connection to headsets etc. 1310 * 1311 * <p> Multiple applications can call this. This is reference counted and 1312 * Bluetooth disabled only when no one else is using it. There will be no UI 1313 * shown to the user while bluetooth is being enabled. Any user action will 1314 * override this call. For example, if user wants Bluetooth on and the last 1315 * user of this API wanted to disable Bluetooth, Bluetooth will not be 1316 * turned off. 1317 * 1318 * <p> This API is only meant to be used by internal applications. Third 1319 * party applications but use {@link #enable} and {@link #disable} APIs. 1320 * 1321 * <p> If this API returns true, it means the callback will be called. 1322 * The callback will be called with the current state of Bluetooth. 1323 * If the state is not what was requested, an internal error would be the 1324 * reason. If Bluetooth is already on and if this function is called to turn 1325 * it on, the api will return true and a callback will be called. 1326 * 1327 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1328 * 1329 * @param on True for on, false for off. 1330 * @param callback The callback to notify changes to the state. 1331 * @hide 1332 */ 1333 public boolean changeApplicationBluetoothState(boolean on, 1334 BluetoothStateChangeCallback callback) { 1335 if (callback == null) return false; 1336 1337 //TODO(BT) 1338 /* 1339 try { 1340 return mService.changeApplicationBluetoothState(on, new 1341 StateChangeCallbackWrapper(callback), new Binder()); 1342 } catch (RemoteException e) { 1343 Log.e(TAG, "changeBluetoothState", e); 1344 }*/ 1345 return false; 1346 } 1347 1348 /** 1349 * @hide 1350 */ 1351 public interface BluetoothStateChangeCallback { 1352 public void onBluetoothStateChange(boolean on); 1353 } 1354 1355 /** 1356 * @hide 1357 */ 1358 public class StateChangeCallbackWrapper extends IBluetoothStateChangeCallback.Stub { 1359 private BluetoothStateChangeCallback mCallback; 1360 1361 StateChangeCallbackWrapper(BluetoothStateChangeCallback 1362 callback) { 1363 mCallback = callback; 1364 } 1365 1366 @Override 1367 public void onBluetoothStateChange(boolean on) { 1368 mCallback.onBluetoothStateChange(on); 1369 } 1370 } 1371 1372 private Set<BluetoothDevice> toDeviceSet(BluetoothDevice[] devices) { 1373 Set<BluetoothDevice> deviceSet = new HashSet<BluetoothDevice>(Arrays.asList(devices)); 1374 return Collections.unmodifiableSet(deviceSet); 1375 } 1376 1377 protected void finalize() throws Throwable { 1378 try { 1379 mManagerService.unregisterAdapter(mManagerCallback); 1380 } catch (RemoteException e) { 1381 Log.e(TAG, "", e); 1382 } finally { 1383 super.finalize(); 1384 } 1385 } 1386 1387 1388 /** 1389 * Validate a String Bluetooth address, such as "00:43:A8:23:10:F0" 1390 * <p>Alphabetic characters must be uppercase to be valid. 1391 * 1392 * @param address Bluetooth address as string 1393 * @return true if the address is valid, false otherwise 1394 */ 1395 public static boolean checkBluetoothAddress(String address) { 1396 if (address == null || address.length() != ADDRESS_LENGTH) { 1397 return false; 1398 } 1399 for (int i = 0; i < ADDRESS_LENGTH; i++) { 1400 char c = address.charAt(i); 1401 switch (i % 3) { 1402 case 0: 1403 case 1: 1404 if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F')) { 1405 // hex character, OK 1406 break; 1407 } 1408 return false; 1409 case 2: 1410 if (c == ':') { 1411 break; // OK 1412 } 1413 return false; 1414 } 1415 } 1416 return true; 1417 } 1418 1419 /*package*/ IBluetoothManager getBluetoothManager() { 1420 return mManagerService; 1421 } 1422 1423 private ArrayList<IBluetoothManagerCallback> mProxyServiceStateCallbacks = new ArrayList<IBluetoothManagerCallback>(); 1424 1425 /*package*/ IBluetooth getBluetoothService(IBluetoothManagerCallback cb) { 1426 synchronized (mManagerCallback) { 1427 if (cb == null) { 1428 Log.w(TAG, "getBluetoothService() called with no BluetoothManagerCallback"); 1429 } else if (!mProxyServiceStateCallbacks.contains(cb)) { 1430 mProxyServiceStateCallbacks.add(cb); 1431 } 1432 } 1433 return mService; 1434 } 1435 1436 /*package*/ void removeServiceStateCallback(IBluetoothManagerCallback cb) { 1437 synchronized (mManagerCallback) { 1438 mProxyServiceStateCallbacks.remove(cb); 1439 } 1440 } 1441 1442 /** 1443 * Callback interface used to deliver LE scan results. 1444 * 1445 * @see #startLeScan(LeScanCallback) 1446 * @see #startLeScan(UUID[], LeScanCallback) 1447 */ 1448 public interface LeScanCallback { 1449 /** 1450 * Callback reporting an LE device found during a device scan initiated 1451 * by the {@link BluetoothAdapter#startLeScan} function. 1452 * 1453 * @param device Identifies the remote device 1454 * @param rssi The RSSI value for the remote device as reported by the 1455 * Bluetooth hardware. 0 if no RSSI value is available. 1456 * @param scanRecord The content of the advertisement record offered by 1457 * the remote device. 1458 */ 1459 public void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord); 1460 } 1461 1462 /** 1463 * Starts a scan for Bluetooth LE devices. 1464 * 1465 * <p>Results of the scan are reported using the 1466 * {@link LeScanCallback#onLeScan} callback. 1467 * 1468 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 1469 * 1470 * @param callback the callback LE scan results are delivered 1471 * @return true, if the scan was started successfully 1472 */ 1473 public boolean startLeScan(LeScanCallback callback) { 1474 return startLeScan(null, callback); 1475 } 1476 1477 /** 1478 * Starts a scan for Bluetooth LE devices, looking for devices that 1479 * advertise given services. 1480 * 1481 * <p>Devices which advertise all specified services are reported using the 1482 * {@link LeScanCallback#onLeScan} callback. 1483 * 1484 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 1485 * 1486 * @param serviceUuids Array of services to look for 1487 * @param callback the callback LE scan results are delivered 1488 * @return true, if the scan was started successfully 1489 */ 1490 public boolean startLeScan(UUID[] serviceUuids, LeScanCallback callback) { 1491 if (DBG) Log.d(TAG, "startLeScan(): " + serviceUuids); 1492 1493 if (callback == null) { 1494 if (DBG) Log.e(TAG, "startLeScan: null callback"); 1495 return false; 1496 } 1497 1498 synchronized(mLeScanClients) { 1499 if (mLeScanClients.containsKey(callback)) { 1500 if (DBG) Log.e(TAG, "LE Scan has already started"); 1501 return false; 1502 } 1503 1504 try { 1505 IBluetoothGatt iGatt = mManagerService.getBluetoothGatt(); 1506 if (iGatt == null) { 1507 // BLE is not supported 1508 return false; 1509 } 1510 1511 UUID uuid = UUID.randomUUID(); 1512 GattCallbackWrapper wrapper = new GattCallbackWrapper(this, callback, serviceUuids); 1513 iGatt.registerClient(new ParcelUuid(uuid), wrapper); 1514 if (wrapper.scanStarted()) { 1515 mLeScanClients.put(callback, wrapper); 1516 return true; 1517 } 1518 } catch (RemoteException e) { 1519 Log.e(TAG,"",e); 1520 } 1521 } 1522 return false; 1523 } 1524 1525 /** 1526 * Stops an ongoing Bluetooth LE device scan. 1527 * 1528 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 1529 * 1530 * @param callback used to identify which scan to stop 1531 * must be the same handle used to start the scan 1532 */ 1533 public void stopLeScan(LeScanCallback callback) { 1534 if (DBG) Log.d(TAG, "stopLeScan()"); 1535 GattCallbackWrapper wrapper; 1536 synchronized(mLeScanClients) { 1537 wrapper = mLeScanClients.remove(callback); 1538 if (wrapper == null) return; 1539 } 1540 wrapper.stopLeScan(); 1541 } 1542 1543 /** 1544 * Bluetooth GATT interface callbacks 1545 */ 1546 private static class GattCallbackWrapper extends IBluetoothGattCallback.Stub { 1547 private static final int LE_CALLBACK_REG_TIMEOUT = 2000; 1548 private static final int LE_CALLBACK_REG_WAIT_COUNT = 5; 1549 1550 private final LeScanCallback mLeScanCb; 1551 // mLeHandle 0: not registered 1552 // -1: scan stopped 1553 // >0: registered and scan started 1554 private int mLeHandle; 1555 private final UUID[] mScanFilter; 1556 private WeakReference<BluetoothAdapter> mBluetoothAdapter; 1557 1558 public GattCallbackWrapper(BluetoothAdapter bluetoothAdapter, 1559 LeScanCallback leScanCb, UUID[] uuid) { 1560 mBluetoothAdapter = new WeakReference<BluetoothAdapter>(bluetoothAdapter); 1561 mLeScanCb = leScanCb; 1562 mScanFilter = uuid; 1563 mLeHandle = 0; 1564 } 1565 1566 public boolean scanStarted() { 1567 boolean started = false; 1568 synchronized(this) { 1569 if (mLeHandle == -1) return false; 1570 1571 int count = 0; 1572 // wait for callback registration and LE scan to start 1573 while (mLeHandle == 0 && count < LE_CALLBACK_REG_WAIT_COUNT) { 1574 try { 1575 wait(LE_CALLBACK_REG_TIMEOUT); 1576 } catch (InterruptedException e) { 1577 Log.e(TAG, "Callback reg wait interrupted: " + e); 1578 } 1579 count++; 1580 } 1581 started = (mLeHandle > 0); 1582 } 1583 return started; 1584 } 1585 1586 public void stopLeScan() { 1587 synchronized(this) { 1588 if (mLeHandle <= 0) { 1589 Log.e(TAG, "Error state, mLeHandle: " + mLeHandle); 1590 return; 1591 } 1592 BluetoothAdapter adapter = mBluetoothAdapter.get(); 1593 if (adapter != null) { 1594 try { 1595 IBluetoothGatt iGatt = adapter.getBluetoothManager().getBluetoothGatt(); 1596 iGatt.stopScan(mLeHandle, false); 1597 iGatt.unregisterClient(mLeHandle); 1598 } catch (RemoteException e) { 1599 Log.e(TAG, "Failed to stop scan and unregister" + e); 1600 } 1601 } else { 1602 Log.e(TAG, "stopLeScan, BluetoothAdapter is null"); 1603 } 1604 mLeHandle = -1; 1605 notifyAll(); 1606 } 1607 } 1608 1609 /** 1610 * Application interface registered - app is ready to go 1611 */ 1612 public void onClientRegistered(int status, int clientIf) { 1613 if (DBG) Log.d(TAG, "onClientRegistered() - status=" + status + 1614 " clientIf=" + clientIf); 1615 synchronized(this) { 1616 if (mLeHandle == -1) { 1617 if (DBG) Log.d(TAG, "onClientRegistered LE scan canceled"); 1618 } 1619 1620 if (status == BluetoothGatt.GATT_SUCCESS) { 1621 mLeHandle = clientIf; 1622 IBluetoothGatt iGatt = null; 1623 try { 1624 BluetoothAdapter adapter = mBluetoothAdapter.get(); 1625 if (adapter != null) { 1626 iGatt = adapter.getBluetoothManager().getBluetoothGatt(); 1627 if (mScanFilter == null) { 1628 iGatt.startScan(mLeHandle, false); 1629 } else { 1630 ParcelUuid[] uuids = new ParcelUuid[mScanFilter.length]; 1631 for(int i = 0; i != uuids.length; ++i) { 1632 uuids[i] = new ParcelUuid(mScanFilter[i]); 1633 } 1634 iGatt.startScanWithUuids(mLeHandle, false, uuids); 1635 } 1636 } else { 1637 Log.e(TAG, "onClientRegistered, BluetoothAdapter null"); 1638 mLeHandle = -1; 1639 } 1640 } catch (RemoteException e) { 1641 Log.e(TAG, "fail to start le scan: " + e); 1642 mLeHandle = -1; 1643 } 1644 if (mLeHandle == -1) { 1645 // registration succeeded but start scan failed 1646 if (iGatt != null) { 1647 try { 1648 iGatt.unregisterClient(mLeHandle); 1649 } catch (RemoteException e) { 1650 Log.e(TAG, "fail to unregister callback: " + mLeHandle + 1651 " error: " + e); 1652 } 1653 } 1654 } 1655 } else { 1656 // registration failed 1657 mLeHandle = -1; 1658 } 1659 notifyAll(); 1660 } 1661 } 1662 1663 public void onClientConnectionState(int status, int clientIf, 1664 boolean connected, String address) { 1665 // no op 1666 } 1667 1668 /** 1669 * Callback reporting an LE scan result. 1670 * @hide 1671 */ 1672 public void onScanResult(String address, int rssi, byte[] advData) { 1673 if (DBG) Log.d(TAG, "onScanResult() - Device=" + address + " RSSI=" +rssi); 1674 1675 // Check null in case the scan has been stopped 1676 synchronized(this) { 1677 if (mLeHandle <= 0) return; 1678 } 1679 try { 1680 BluetoothAdapter adapter = mBluetoothAdapter.get(); 1681 if (adapter == null) { 1682 Log.d(TAG, "onScanResult, BluetoothAdapter null"); 1683 return; 1684 } 1685 mLeScanCb.onLeScan(adapter.getRemoteDevice(address), rssi, advData); 1686 } catch (Exception ex) { 1687 Log.w(TAG, "Unhandled exception: " + ex); 1688 } 1689 } 1690 1691 public void onGetService(String address, int srvcType, 1692 int srvcInstId, ParcelUuid srvcUuid) { 1693 // no op 1694 } 1695 1696 public void onGetIncludedService(String address, int srvcType, 1697 int srvcInstId, ParcelUuid srvcUuid, 1698 int inclSrvcType, int inclSrvcInstId, 1699 ParcelUuid inclSrvcUuid) { 1700 // no op 1701 } 1702 1703 public void onGetCharacteristic(String address, int srvcType, 1704 int srvcInstId, ParcelUuid srvcUuid, 1705 int charInstId, ParcelUuid charUuid, 1706 int charProps) { 1707 // no op 1708 } 1709 1710 public void onGetDescriptor(String address, int srvcType, 1711 int srvcInstId, ParcelUuid srvcUuid, 1712 int charInstId, ParcelUuid charUuid, 1713 int descInstId, ParcelUuid descUuid) { 1714 // no op 1715 } 1716 1717 public void onSearchComplete(String address, int status) { 1718 // no op 1719 } 1720 1721 public void onCharacteristicRead(String address, int status, int srvcType, 1722 int srvcInstId, ParcelUuid srvcUuid, 1723 int charInstId, ParcelUuid charUuid, byte[] value) { 1724 // no op 1725 } 1726 1727 public void onCharacteristicWrite(String address, int status, int srvcType, 1728 int srvcInstId, ParcelUuid srvcUuid, 1729 int charInstId, ParcelUuid charUuid) { 1730 // no op 1731 } 1732 1733 public void onNotify(String address, int srvcType, 1734 int srvcInstId, ParcelUuid srvcUuid, 1735 int charInstId, ParcelUuid charUuid, 1736 byte[] value) { 1737 // no op 1738 } 1739 1740 public void onDescriptorRead(String address, int status, int srvcType, 1741 int srvcInstId, ParcelUuid srvcUuid, 1742 int charInstId, ParcelUuid charUuid, 1743 int descInstId, ParcelUuid descrUuid, byte[] value) { 1744 // no op 1745 } 1746 1747 public void onDescriptorWrite(String address, int status, int srvcType, 1748 int srvcInstId, ParcelUuid srvcUuid, 1749 int charInstId, ParcelUuid charUuid, 1750 int descInstId, ParcelUuid descrUuid) { 1751 // no op 1752 } 1753 1754 public void onExecuteWrite(String address, int status) { 1755 // no op 1756 } 1757 1758 public void onReadRemoteRssi(String address, int rssi, int status) { 1759 // no op 1760 } 1761 1762 public void onListen(int status) { 1763 // no op 1764 } 1765 } 1766 1767 } 1768
