BluetoothAdapter.java revision 4bedba49fe6989387fd04499b175af56e068da28
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 17package android.bluetooth; 18 19import android.annotation.SdkConstant; 20import android.annotation.SdkConstant.SdkConstantType; 21import android.content.Context; 22import android.os.Binder; 23import android.os.Handler; 24import android.os.IBinder; 25import android.os.Looper; 26import android.os.Message; 27import android.os.ParcelUuid; 28import android.os.RemoteException; 29import android.os.ServiceManager; 30import android.util.Log; 31import android.util.Pair; 32 33import java.io.IOException; 34import java.util.Arrays; 35import java.util.Collections; 36import java.util.HashSet; 37import java.util.LinkedList; 38import java.util.Random; 39import java.util.Set; 40import java.util.UUID; 41 42/** 43 * Represents the local device Bluetooth adapter. The {@link BluetoothAdapter} 44 * lets you perform fundamental Bluetooth tasks, such as initiate 45 * device discovery, query a list of bonded (paired) devices, 46 * instantiate a {@link BluetoothDevice} using a known MAC address, and create 47 * a {@link BluetoothServerSocket} to listen for connection requests from other 48 * devices. 49 * 50 * <p>To get a {@link BluetoothAdapter} representing the local Bluetooth 51 * adapter, call the static {@link #getDefaultAdapter} method. 52 * Fundamentally, this is your starting point for all 53 * Bluetooth actions. Once you have the local adapter, you can get a set of 54 * {@link BluetoothDevice} objects representing all paired devices with 55 * {@link #getBondedDevices()}; start device discovery with 56 * {@link #startDiscovery()}; or create a {@link BluetoothServerSocket} to 57 * listen for incoming connection requests with 58 * {@link #listenUsingRfcommWithServiceRecord(String,UUID)}. 59 * 60 * <p class="note"><strong>Note:</strong> 61 * Most methods require the {@link android.Manifest.permission#BLUETOOTH} 62 * permission and some also require the 63 * {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 64 * 65 * <div class="special reference"> 66 * <h3>Developer Guides</h3> 67 * <p>For more information about using Bluetooth, read the 68 * <a href="{@docRoot}guide/topics/wireless/bluetooth.html">Bluetooth</a> developer guide.</p> 69 * </div> 70 * 71 * {@see BluetoothDevice} 72 * {@see BluetoothServerSocket} 73 */ 74public final class BluetoothAdapter { 75 private static final String TAG = "BluetoothAdapter"; 76 private static final boolean DBG = true; 77 78 /** 79 * Sentinel error value for this class. Guaranteed to not equal any other 80 * integer constant in this class. Provided as a convenience for functions 81 * that require a sentinel error value, for example: 82 * <p><code>Intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, 83 * BluetoothAdapter.ERROR)</code> 84 */ 85 public static final int ERROR = Integer.MIN_VALUE; 86 87 /** 88 * Broadcast Action: The state of the local Bluetooth adapter has been 89 * changed. 90 * <p>For example, Bluetooth has been turned on or off. 91 * <p>Always contains the extra fields {@link #EXTRA_STATE} and {@link 92 * #EXTRA_PREVIOUS_STATE} containing the new and old states 93 * respectively. 94 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 95 */ 96 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 97 public static final String ACTION_STATE_CHANGED = 98 "android.bluetooth.adapter.action.STATE_CHANGED"; 99 100 /** 101 * Used as an int extra field in {@link #ACTION_STATE_CHANGED} 102 * intents to request the current power state. Possible values are: 103 * {@link #STATE_OFF}, 104 * {@link #STATE_TURNING_ON}, 105 * {@link #STATE_ON}, 106 * {@link #STATE_TURNING_OFF}, 107 */ 108 public static final String EXTRA_STATE = 109 "android.bluetooth.adapter.extra.STATE"; 110 /** 111 * Used as an int extra field in {@link #ACTION_STATE_CHANGED} 112 * intents to request the previous power state. Possible values are: 113 * {@link #STATE_OFF}, 114 * {@link #STATE_TURNING_ON}, 115 * {@link #STATE_ON}, 116 * {@link #STATE_TURNING_OFF}, 117 */ 118 public static final String EXTRA_PREVIOUS_STATE = 119 "android.bluetooth.adapter.extra.PREVIOUS_STATE"; 120 121 /** 122 * Indicates the local Bluetooth adapter is off. 123 */ 124 public static final int STATE_OFF = 10; 125 /** 126 * Indicates the local Bluetooth adapter is turning on. However local 127 * clients should wait for {@link #STATE_ON} before attempting to 128 * use the adapter. 129 */ 130 public static final int STATE_TURNING_ON = 11; 131 /** 132 * Indicates the local Bluetooth adapter is on, and ready for use. 133 */ 134 public static final int STATE_ON = 12; 135 /** 136 * Indicates the local Bluetooth adapter is turning off. Local clients 137 * should immediately attempt graceful disconnection of any remote links. 138 */ 139 public static final int STATE_TURNING_OFF = 13; 140 141 /** 142 * Activity Action: Show a system activity that requests discoverable mode. 143 * This activity will also request the user to turn on Bluetooth if it 144 * is not currently enabled. 145 * <p>Discoverable mode is equivalent to {@link 146 * #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. It allows remote devices to see 147 * this Bluetooth adapter when they perform a discovery. 148 * <p>For privacy, Android is not discoverable by default. 149 * <p>The sender of this Intent can optionally use extra field {@link 150 * #EXTRA_DISCOVERABLE_DURATION} to request the duration of 151 * discoverability. Currently the default duration is 120 seconds, and 152 * maximum duration is capped at 300 seconds for each request. 153 * <p>Notification of the result of this activity is posted using the 154 * {@link android.app.Activity#onActivityResult} callback. The 155 * <code>resultCode</code> 156 * will be the duration (in seconds) of discoverability or 157 * {@link android.app.Activity#RESULT_CANCELED} if the user rejected 158 * discoverability or an error has occurred. 159 * <p>Applications can also listen for {@link #ACTION_SCAN_MODE_CHANGED} 160 * for global notification whenever the scan mode changes. For example, an 161 * application can be notified when the device has ended discoverability. 162 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 163 */ 164 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 165 public static final String ACTION_REQUEST_DISCOVERABLE = 166 "android.bluetooth.adapter.action.REQUEST_DISCOVERABLE"; 167 168 /** 169 * Used as an optional int extra field in {@link 170 * #ACTION_REQUEST_DISCOVERABLE} intents to request a specific duration 171 * for discoverability in seconds. The current default is 120 seconds, and 172 * requests over 300 seconds will be capped. These values could change. 173 */ 174 public static final String EXTRA_DISCOVERABLE_DURATION = 175 "android.bluetooth.adapter.extra.DISCOVERABLE_DURATION"; 176 177 /** 178 * Activity Action: Show a system activity that allows the user to turn on 179 * Bluetooth. 180 * <p>This system activity will return once Bluetooth has completed turning 181 * on, or the user has decided not to turn Bluetooth on. 182 * <p>Notification of the result of this activity is posted using the 183 * {@link android.app.Activity#onActivityResult} callback. The 184 * <code>resultCode</code> 185 * will be {@link android.app.Activity#RESULT_OK} if Bluetooth has been 186 * turned on or {@link android.app.Activity#RESULT_CANCELED} if the user 187 * has rejected the request or an error has occurred. 188 * <p>Applications can also listen for {@link #ACTION_STATE_CHANGED} 189 * for global notification whenever Bluetooth is turned on or off. 190 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 191 */ 192 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 193 public static final String ACTION_REQUEST_ENABLE = 194 "android.bluetooth.adapter.action.REQUEST_ENABLE"; 195 196 /** 197 * Broadcast Action: Indicates the Bluetooth scan mode of the local Adapter 198 * has changed. 199 * <p>Always contains the extra fields {@link #EXTRA_SCAN_MODE} and {@link 200 * #EXTRA_PREVIOUS_SCAN_MODE} containing the new and old scan modes 201 * respectively. 202 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 203 */ 204 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 205 public static final String ACTION_SCAN_MODE_CHANGED = 206 "android.bluetooth.adapter.action.SCAN_MODE_CHANGED"; 207 208 /** 209 * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED} 210 * intents to request the current scan mode. Possible values are: 211 * {@link #SCAN_MODE_NONE}, 212 * {@link #SCAN_MODE_CONNECTABLE}, 213 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}, 214 */ 215 public static final String EXTRA_SCAN_MODE = "android.bluetooth.adapter.extra.SCAN_MODE"; 216 /** 217 * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED} 218 * intents to request the previous 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_PREVIOUS_SCAN_MODE = 224 "android.bluetooth.adapter.extra.PREVIOUS_SCAN_MODE"; 225 226 /** 227 * Indicates that both inquiry scan and page scan are disabled on the local 228 * Bluetooth adapter. Therefore this device is neither discoverable 229 * nor connectable from remote Bluetooth devices. 230 */ 231 public static final int SCAN_MODE_NONE = 20; 232 /** 233 * Indicates that inquiry scan is disabled, but page scan is enabled on the 234 * local Bluetooth adapter. Therefore this device is not discoverable from 235 * remote Bluetooth devices, but is connectable from remote devices that 236 * have previously discovered this device. 237 */ 238 public static final int SCAN_MODE_CONNECTABLE = 21; 239 /** 240 * Indicates that both inquiry scan and page scan are enabled on the local 241 * Bluetooth adapter. Therefore this device is both discoverable and 242 * connectable from remote Bluetooth devices. 243 */ 244 public static final int SCAN_MODE_CONNECTABLE_DISCOVERABLE = 23; 245 246 247 /** 248 * Broadcast Action: The local Bluetooth adapter has started the remote 249 * device discovery process. 250 * <p>This usually involves an inquiry scan of about 12 seconds, followed 251 * by a page scan of each new device to retrieve its Bluetooth name. 252 * <p>Register for {@link BluetoothDevice#ACTION_FOUND} to be notified as 253 * remote Bluetooth devices are found. 254 * <p>Device discovery is a heavyweight procedure. New connections to 255 * remote Bluetooth devices should not be attempted while discovery is in 256 * progress, and existing connections will experience limited bandwidth 257 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 258 * discovery. 259 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 260 */ 261 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 262 public static final String ACTION_DISCOVERY_STARTED = 263 "android.bluetooth.adapter.action.DISCOVERY_STARTED"; 264 /** 265 * Broadcast Action: The local Bluetooth adapter has finished the device 266 * discovery process. 267 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 268 */ 269 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 270 public static final String ACTION_DISCOVERY_FINISHED = 271 "android.bluetooth.adapter.action.DISCOVERY_FINISHED"; 272 273 /** 274 * Broadcast Action: The local Bluetooth adapter has changed its friendly 275 * Bluetooth name. 276 * <p>This name is visible to remote Bluetooth devices. 277 * <p>Always contains the extra field {@link #EXTRA_LOCAL_NAME} containing 278 * the name. 279 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 280 */ 281 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 282 public static final String ACTION_LOCAL_NAME_CHANGED = 283 "android.bluetooth.adapter.action.LOCAL_NAME_CHANGED"; 284 /** 285 * Used as a String extra field in {@link #ACTION_LOCAL_NAME_CHANGED} 286 * intents to request the local Bluetooth name. 287 */ 288 public static final String EXTRA_LOCAL_NAME = "android.bluetooth.adapter.extra.LOCAL_NAME"; 289 290 /** 291 * Intent used to broadcast the change in connection state of the local 292 * Bluetooth adapter to a profile of the remote device. When the adapter is 293 * not connected to any profiles of any remote devices and it attempts a 294 * connection to a profile this intent will sent. Once connected, this intent 295 * will not be sent for any more connection attempts to any profiles of any 296 * remote device. When the adapter disconnects from the last profile its 297 * connected to of any remote device, this intent will be sent. 298 * 299 * <p> This intent is useful for applications that are only concerned about 300 * whether the local adapter is connected to any profile of any device and 301 * are not really concerned about which profile. For example, an application 302 * which displays an icon to display whether Bluetooth is connected or not 303 * can use this intent. 304 * 305 * <p>This intent will have 3 extras: 306 * {@link #EXTRA_CONNECTION_STATE} - The current connection state. 307 * {@link #EXTRA_PREVIOUS_CONNECTION_STATE}- The previous connection state. 308 * {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. 309 * 310 * {@link #EXTRA_CONNECTION_STATE} or {@link #EXTRA_PREVIOUS_CONNECTION_STATE} 311 * can be any of {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, 312 * {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}. 313 * 314 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 315 */ 316 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 317 public static final String ACTION_CONNECTION_STATE_CHANGED = 318 "android.bluetooth.adapter.action.CONNECTION_STATE_CHANGED"; 319 320 /** 321 * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED} 322 * 323 * This extra represents the current connection state. 324 */ 325 public static final String EXTRA_CONNECTION_STATE = 326 "android.bluetooth.adapter.extra.CONNECTION_STATE"; 327 328 /** 329 * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED} 330 * 331 * This extra represents the previous connection state. 332 */ 333 public static final String EXTRA_PREVIOUS_CONNECTION_STATE = 334 "android.bluetooth.adapter.extra.PREVIOUS_CONNECTION_STATE"; 335 336 /** The profile is in disconnected state */ 337 public static final int STATE_DISCONNECTED = 0; 338 /** The profile is in connecting state */ 339 public static final int STATE_CONNECTING = 1; 340 /** The profile is in connected state */ 341 public static final int STATE_CONNECTED = 2; 342 /** The profile is in disconnecting state */ 343 public static final int STATE_DISCONNECTING = 3; 344 345 /** @hide */ 346 public static final String BLUETOOTH_MANAGER_SERVICE = "bluetooth_manager"; 347 348 private static final int ADDRESS_LENGTH = 17; 349 350 /** 351 * Lazily initialized singleton. Guaranteed final after first object 352 * constructed. 353 */ 354 private static BluetoothAdapter sAdapter; 355 356 private final IBluetoothManager mManagerService; 357 private IBluetooth mService; 358 359 private Handler mServiceRecordHandler; 360 361 /** 362 * Get a handle to the default local Bluetooth adapter. 363 * <p>Currently Android only supports one Bluetooth adapter, but the API 364 * could be extended to support more. This will always return the default 365 * adapter. 366 * @return the default local adapter, or null if Bluetooth is not supported 367 * on this hardware platform 368 */ 369 public static synchronized BluetoothAdapter getDefaultAdapter() { 370 if (sAdapter == null) { 371 IBinder b = ServiceManager.getService(BLUETOOTH_MANAGER_SERVICE); 372 if (b != null) { 373 IBluetoothManager managerService = IBluetoothManager.Stub.asInterface(b); 374 sAdapter = new BluetoothAdapter(managerService); 375 } else { 376 Log.e(TAG, "Bluetooth binder is null"); 377 } 378 } 379 return sAdapter; 380 } 381 382 /** 383 * Use {@link #getDefaultAdapter} to get the BluetoothAdapter instance. 384 */ 385 BluetoothAdapter(IBluetoothManager managerService) { 386 387 if (managerService == null) { 388 throw new IllegalArgumentException("bluetooth manager service is null"); 389 } 390 try { 391 mService = managerService.registerAdapter(mManagerCallback); 392 } catch (RemoteException e) {Log.e(TAG, "", e);} 393 mManagerService = managerService; 394 mServiceRecordHandler = null; 395 } 396 397 /** 398 * Get a {@link BluetoothDevice} object for the given Bluetooth hardware 399 * address. 400 * <p>Valid Bluetooth hardware addresses must be upper case, in a format 401 * such as "00:11:22:33:AA:BB". The helper {@link #checkBluetoothAddress} is 402 * available to validate a Bluetooth address. 403 * <p>A {@link BluetoothDevice} will always be returned for a valid 404 * hardware address, even if this adapter has never seen that device. 405 * 406 * @param address valid Bluetooth MAC address 407 * @throws IllegalArgumentException if address is invalid 408 */ 409 public BluetoothDevice getRemoteDevice(String address) { 410 if (mService == null) { 411 Log.e(TAG, "BT not enabled. Cannot create Remote Device"); 412 return null; 413 } 414 return new BluetoothDevice(address); 415 } 416 417 /** 418 * Get a {@link BluetoothDevice} object for the given Bluetooth hardware 419 * address. 420 * <p>Valid Bluetooth hardware addresses must be 6 bytes. This method 421 * expects the address in network byte order (MSB first). 422 * <p>A {@link BluetoothDevice} will always be returned for a valid 423 * hardware address, even if this adapter has never seen that device. 424 * 425 * @param address Bluetooth MAC address (6 bytes) 426 * @throws IllegalArgumentException if address is invalid 427 */ 428 public BluetoothDevice getRemoteDevice(byte[] address) { 429 if (address == null || address.length != 6) { 430 throw new IllegalArgumentException("Bluetooth address must have 6 bytes"); 431 } 432 return new BluetoothDevice(String.format("%02X:%02X:%02X:%02X:%02X:%02X", 433 address[0], address[1], address[2], address[3], address[4], address[5])); 434 } 435 436 /** 437 * Return true if Bluetooth is currently enabled and ready for use. 438 * <p>Equivalent to: 439 * <code>getBluetoothState() == STATE_ON</code> 440 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 441 * 442 * @return true if the local adapter is turned on 443 */ 444 public boolean isEnabled() { 445 446 try { 447 synchronized(mManagerCallback) { 448 if (mService != null) return mService.isEnabled(); 449 } 450 } catch (RemoteException e) {Log.e(TAG, "", e);} 451 return false; 452 } 453 454 /** 455 * Get the current state of the local Bluetooth adapter. 456 * <p>Possible return values are 457 * {@link #STATE_OFF}, 458 * {@link #STATE_TURNING_ON}, 459 * {@link #STATE_ON}, 460 * {@link #STATE_TURNING_OFF}. 461 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 462 * 463 * @return current state of Bluetooth adapter 464 */ 465 public int getState() { 466 try { 467 synchronized(mManagerCallback) { 468 if (mService != null) 469 { 470 return mService.getState(); 471 } 472 // TODO(BT) there might be a small gap during STATE_TURNING_ON that 473 // mService is null, handle that case 474 } 475 } catch (RemoteException e) {Log.e(TAG, "", e);} 476 return STATE_OFF; 477 } 478 479 /** 480 * Turn on the local Bluetooth adapter—do not use without explicit 481 * user action to turn on Bluetooth. 482 * <p>This powers on the underlying Bluetooth hardware, and starts all 483 * Bluetooth system services. 484 * <p class="caution"><strong>Bluetooth should never be enabled without 485 * direct user consent</strong>. If you want to turn on Bluetooth in order 486 * to create a wireless connection, you should use the {@link 487 * #ACTION_REQUEST_ENABLE} Intent, which will raise a dialog that requests 488 * user permission to turn on Bluetooth. The {@link #enable()} method is 489 * provided only for applications that include a user interface for changing 490 * system settings, such as a "power manager" app.</p> 491 * <p>This is an asynchronous call: it will return immediately, and 492 * clients should listen for {@link #ACTION_STATE_CHANGED} 493 * to be notified of subsequent adapter state changes. If this call returns 494 * true, then the adapter state will immediately transition from {@link 495 * #STATE_OFF} to {@link #STATE_TURNING_ON}, and some time 496 * later transition to either {@link #STATE_OFF} or {@link 497 * #STATE_ON}. If this call returns false then there was an 498 * immediate problem that will prevent the adapter from being turned on - 499 * such as Airplane mode, or the adapter is already turned on. 500 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 501 * permission 502 * 503 * @return true to indicate adapter startup has begun, or false on 504 * immediate error 505 */ 506 public boolean enable() { 507 508 boolean enabled = false; 509 try { 510 return mManagerService.enable(); 511 } catch (RemoteException e) {Log.e(TAG, "", e);} 512 return false; 513 } 514 515 /** 516 * Turn off the local Bluetooth adapter—do not use without explicit 517 * user action to turn off Bluetooth. 518 * <p>This gracefully shuts down all Bluetooth connections, stops Bluetooth 519 * system services, and powers down the underlying Bluetooth hardware. 520 * <p class="caution"><strong>Bluetooth should never be disabled without 521 * direct user consent</strong>. The {@link #disable()} method is 522 * provided only for applications that include a user interface for changing 523 * system settings, such as a "power manager" app.</p> 524 * <p>This is an asynchronous call: it will return immediately, and 525 * clients should listen for {@link #ACTION_STATE_CHANGED} 526 * to be notified of subsequent adapter state changes. If this call returns 527 * true, then the adapter state will immediately transition from {@link 528 * #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time 529 * later transition to either {@link #STATE_OFF} or {@link 530 * #STATE_ON}. If this call returns false then there was an 531 * immediate problem that will prevent the adapter from being turned off - 532 * such as the adapter already being turned off. 533 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 534 * permission 535 * 536 * @return true to indicate adapter shutdown has begun, or false on 537 * immediate error 538 */ 539 public boolean disable() { 540 try { 541 return mManagerService.disable(true); 542 } catch (RemoteException e) {Log.e(TAG, "", e);} 543 return false; 544 } 545 546 /** 547 * Turn off the local Bluetooth adapter and don't persist the setting. 548 * 549 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 550 * permission 551 * 552 * @return true to indicate adapter shutdown has begun, or false on 553 * immediate error 554 * @hide 555 */ 556 public boolean disable(boolean persist) { 557 558 try { 559 return mManagerService.disable(persist); 560 } catch (RemoteException e) {Log.e(TAG, "", e);} 561 return false; 562 } 563 564 /** 565 * Returns the hardware address of the local Bluetooth adapter. 566 * <p>For example, "00:11:22:AA:BB:CC". 567 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 568 * 569 * @return Bluetooth hardware address as string 570 */ 571 public String getAddress() { 572 try { 573 return mManagerService.getAddress(); 574 } catch (RemoteException e) {Log.e(TAG, "", e);} 575 return null; 576 } 577 578 /** 579 * Get the friendly Bluetooth name of the local Bluetooth adapter. 580 * <p>This name is visible to remote Bluetooth devices. 581 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 582 * 583 * @return the Bluetooth name, or null on error 584 */ 585 public String getName() { 586 try { 587 return mService.getName(); 588 } catch (RemoteException e) {Log.e(TAG, "", e);} 589 return null; 590 } 591 592 /** 593 * Get the UUIDs supported by the local Bluetooth adapter. 594 * 595 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 596 * 597 * @return the UUIDs supported by the local Bluetooth Adapter. 598 * @hide 599 */ 600 public ParcelUuid[] getUuids() { 601 if (getState() != STATE_ON) return null; 602 try { 603 synchronized(mManagerCallback) { 604 if (mService != null) return mService.getUuids(); 605 } 606 } catch (RemoteException e) {Log.e(TAG, "", e);} 607 return null; 608 } 609 610 /** 611 * Set the friendly Bluetooth name of the local Bluetooth adapter. 612 * <p>This name is visible to remote Bluetooth devices. 613 * <p>Valid Bluetooth names are a maximum of 248 bytes using UTF-8 614 * encoding, although many remote devices can only display the first 615 * 40 characters, and some may be limited to just 20. 616 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 617 * will return false. After turning on Bluetooth, 618 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 619 * to get the updated value. 620 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} 621 * 622 * @param name a valid Bluetooth name 623 * @return true if the name was set, false otherwise 624 */ 625 public boolean setName(String name) { 626 if (getState() != STATE_ON) return false; 627 try { 628 synchronized(mManagerCallback) { 629 if (mService != null) return mService.setName(name); 630 } 631 } catch (RemoteException e) {Log.e(TAG, "", e);} 632 return false; 633 } 634 635 /** 636 * Get the current Bluetooth scan mode of the local Bluetooth adapter. 637 * <p>The Bluetooth scan mode determines if the local adapter is 638 * connectable and/or discoverable from remote Bluetooth devices. 639 * <p>Possible values are: 640 * {@link #SCAN_MODE_NONE}, 641 * {@link #SCAN_MODE_CONNECTABLE}, 642 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. 643 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 644 * will return {@link #SCAN_MODE_NONE}. After turning on Bluetooth, 645 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 646 * to get the updated value. 647 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 648 * 649 * @return scan mode 650 */ 651 public int getScanMode() { 652 if (getState() != STATE_ON) return SCAN_MODE_NONE; 653 try { 654 synchronized(mManagerCallback) { 655 if (mService != null) return mService.getScanMode(); 656 } 657 } catch (RemoteException e) {Log.e(TAG, "", e);} 658 return SCAN_MODE_NONE; 659 } 660 661 /** 662 * Set the Bluetooth scan mode of the local Bluetooth adapter. 663 * <p>The Bluetooth scan mode determines if the local adapter is 664 * connectable and/or discoverable from remote Bluetooth devices. 665 * <p>For privacy reasons, discoverable mode is automatically turned off 666 * after <code>duration</code> seconds. For example, 120 seconds should be 667 * enough for a remote device to initiate and complete its discovery 668 * process. 669 * <p>Valid scan mode values are: 670 * {@link #SCAN_MODE_NONE}, 671 * {@link #SCAN_MODE_CONNECTABLE}, 672 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. 673 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 674 * will return false. After turning on Bluetooth, 675 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 676 * to get the updated value. 677 * <p>Requires {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} 678 * <p>Applications cannot set the scan mode. They should use 679 * <code>startActivityForResult( 680 * BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE}) 681 * </code>instead. 682 * 683 * @param mode valid scan mode 684 * @param duration time in seconds to apply scan mode, only used for 685 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE} 686 * @return true if the scan mode was set, false otherwise 687 * @hide 688 */ 689 public boolean setScanMode(int mode, int duration) { 690 if (getState() != STATE_ON) return false; 691 try { 692 synchronized(mManagerCallback) { 693 if (mService != null) return mService.setScanMode(mode, duration); 694 } 695 } catch (RemoteException e) {Log.e(TAG, "", e);} 696 return false; 697 } 698 699 /** @hide */ 700 public boolean setScanMode(int mode) { 701 if (getState() != STATE_ON) return false; 702 /* getDiscoverableTimeout() to use the latest from NV than use 0 */ 703 return setScanMode(mode, getDiscoverableTimeout()); 704 } 705 706 /** @hide */ 707 public int getDiscoverableTimeout() { 708 if (getState() != STATE_ON) return -1; 709 try { 710 synchronized(mManagerCallback) { 711 if (mService != null) return mService.getDiscoverableTimeout(); 712 } 713 } catch (RemoteException e) {Log.e(TAG, "", e);} 714 return -1; 715 } 716 717 /** @hide */ 718 public void setDiscoverableTimeout(int timeout) { 719 if (getState() != STATE_ON) return; 720 try { 721 synchronized(mManagerCallback) { 722 if (mService != null) mService.setDiscoverableTimeout(timeout); 723 } 724 } catch (RemoteException e) {Log.e(TAG, "", e);} 725 } 726 727 /** 728 * Start the remote device discovery process. 729 * <p>The discovery process usually involves an inquiry scan of about 12 730 * seconds, followed by a page scan of each new device to retrieve its 731 * Bluetooth name. 732 * <p>This is an asynchronous call, it will return immediately. Register 733 * for {@link #ACTION_DISCOVERY_STARTED} and {@link 734 * #ACTION_DISCOVERY_FINISHED} intents to determine exactly when the 735 * discovery starts and completes. Register for {@link 736 * BluetoothDevice#ACTION_FOUND} to be notified as remote Bluetooth devices 737 * are found. 738 * <p>Device discovery is a heavyweight procedure. New connections to 739 * remote Bluetooth devices should not be attempted while discovery is in 740 * progress, and existing connections will experience limited bandwidth 741 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 742 * discovery. Discovery is not managed by the Activity, 743 * but is run as a system service, so an application should always call 744 * {@link BluetoothAdapter#cancelDiscovery()} even if it 745 * did not directly request a discovery, just to be sure. 746 * <p>Device discovery will only find remote devices that are currently 747 * <i>discoverable</i> (inquiry scan enabled). Many Bluetooth devices are 748 * not discoverable by default, and need to be entered into a special mode. 749 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 750 * will return false. After turning on Bluetooth, 751 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 752 * to get the updated value. 753 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. 754 * 755 * @return true on success, false on error 756 */ 757 public boolean startDiscovery() { 758 if (getState() != STATE_ON) return false; 759 try { 760 synchronized(mManagerCallback) { 761 if (mService != null) return mService.startDiscovery(); 762 } 763 } catch (RemoteException e) {Log.e(TAG, "", e);} 764 return false; 765 } 766 767 /** 768 * Cancel the current device discovery process. 769 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. 770 * <p>Because discovery is a heavyweight procedure for the Bluetooth 771 * adapter, this method should always be called before attempting to connect 772 * to a remote device with {@link 773 * android.bluetooth.BluetoothSocket#connect()}. Discovery is not managed by 774 * the Activity, but is run as a system service, so an application should 775 * always call cancel discovery even if it did not directly request a 776 * discovery, just to be sure. 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 * 782 * @return true on success, false on error 783 */ 784 public boolean cancelDiscovery() { 785 if (getState() != STATE_ON) return false; 786 try { 787 synchronized(mManagerCallback) { 788 if (mService != null) return mService.cancelDiscovery(); 789 } 790 } catch (RemoteException e) {Log.e(TAG, "", e);} 791 return false; 792 } 793 794 /** 795 * Return true if the local Bluetooth adapter is currently in the device 796 * discovery process. 797 * <p>Device discovery is a heavyweight procedure. New connections to 798 * remote Bluetooth devices should not be attempted while discovery is in 799 * progress, and existing connections will experience limited bandwidth 800 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 801 * discovery. 802 * <p>Applications can also register for {@link #ACTION_DISCOVERY_STARTED} 803 * or {@link #ACTION_DISCOVERY_FINISHED} to be notified when discovery 804 * starts or completes. 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 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 810 * 811 * @return true if discovering 812 */ 813 public boolean isDiscovering() { 814 if (getState() != STATE_ON) return false; 815 try { 816 synchronized(mManagerCallback) { 817 if (mService != null ) return mService.isDiscovering(); 818 } 819 } catch (RemoteException e) {Log.e(TAG, "", e);} 820 return false; 821 } 822 823 /** 824 * Return the set of {@link BluetoothDevice} objects that are bonded 825 * (paired) to the local adapter. 826 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 827 * will return an empty set. After turning on Bluetooth, 828 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 829 * to get the updated value. 830 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 831 * 832 * @return unmodifiable set of {@link BluetoothDevice}, or null on error 833 */ 834 public Set<BluetoothDevice> getBondedDevices() { 835 if (getState() != STATE_ON) { 836 return toDeviceSet(new BluetoothDevice[0]); 837 } 838 try { 839 synchronized(mManagerCallback) { 840 if (mService != null) return toDeviceSet(mService.getBondedDevices()); 841 } 842 return toDeviceSet(new BluetoothDevice[0]); 843 } catch (RemoteException e) {Log.e(TAG, "", e);} 844 return null; 845 } 846 847 /** 848 * Get the current connection state of the local Bluetooth adapter. 849 * This can be used to check whether the local Bluetooth adapter is connected 850 * to any profile of any other remote Bluetooth Device. 851 * 852 * <p> Use this function along with {@link #ACTION_CONNECTION_STATE_CHANGED} 853 * intent to get the connection state of the adapter. 854 * 855 * @return One of {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTED}, 856 * {@link #STATE_CONNECTING} or {@link #STATE_DISCONNECTED} 857 * 858 * @hide 859 */ 860 public int getConnectionState() { 861 if (getState() != STATE_ON) return BluetoothAdapter.STATE_DISCONNECTED; 862 try { 863 synchronized(mManagerCallback) { 864 if (mService != null) return mService.getAdapterConnectionState(); 865 } 866 } catch (RemoteException e) {Log.e(TAG, "getConnectionState:", e);} 867 return BluetoothAdapter.STATE_DISCONNECTED; 868 } 869 870 /** 871 * Get the current connection state of a profile. 872 * This function can be used to check whether the local Bluetooth adapter 873 * is connected to any remote device for a specific profile. 874 * Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET}, 875 * {@link BluetoothProfile#A2DP}. 876 * 877 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 878 * 879 * <p> Return value can be one of 880 * {@link BluetoothProfile#STATE_DISCONNECTED}, 881 * {@link BluetoothProfile#STATE_CONNECTING}, 882 * {@link BluetoothProfile#STATE_CONNECTED}, 883 * {@link BluetoothProfile#STATE_DISCONNECTING} 884 */ 885 public int getProfileConnectionState(int profile) { 886 if (getState() != STATE_ON) return BluetoothProfile.STATE_DISCONNECTED; 887 try { 888 synchronized(mManagerCallback) { 889 if (mService != null) return mService.getProfileConnectionState(profile); 890 } 891 } catch (RemoteException e) { 892 Log.e(TAG, "getProfileConnectionState:", e); 893 } 894 return BluetoothProfile.STATE_DISCONNECTED; 895 } 896 897 /** 898 * Create a listening, secure RFCOMM Bluetooth socket. 899 * <p>A remote device connecting to this socket will be authenticated and 900 * communication on this socket will be encrypted. 901 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 902 * connections from a listening {@link BluetoothServerSocket}. 903 * <p>Valid RFCOMM channels are in range 1 to 30. 904 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} 905 * @param channel RFCOMM channel to listen on 906 * @return a listening RFCOMM BluetoothServerSocket 907 * @throws IOException on error, for example Bluetooth not available, or 908 * insufficient permissions, or channel in use. 909 * @hide 910 */ 911 public BluetoothServerSocket listenUsingRfcommOn(int channel) throws IOException { 912 BluetoothServerSocket socket = new BluetoothServerSocket( 913 BluetoothSocket.TYPE_RFCOMM, true, true, channel); 914 int errno = socket.mSocket.bindListen(); 915 if (errno != 0) { 916 //TODO(BT): Throw the same exception error code 917 // that the previous code was using. 918 //socket.mSocket.throwErrnoNative(errno); 919 throw new IOException("Error: " + errno); 920 } 921 return socket; 922 } 923 924 /** 925 * Create a listening, secure RFCOMM Bluetooth socket with Service Record. 926 * <p>A remote device connecting to this socket will be authenticated and 927 * communication on this socket will be encrypted. 928 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 929 * connections from a listening {@link BluetoothServerSocket}. 930 * <p>The system will assign an unused RFCOMM channel to listen on. 931 * <p>The system will also register a Service Discovery 932 * Protocol (SDP) record with the local SDP server containing the specified 933 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 934 * can use the same UUID to query our SDP server and discover which channel 935 * to connect to. This SDP record will be removed when this socket is 936 * closed, or if this application closes unexpectedly. 937 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 938 * connect to this socket from another device using the same {@link UUID}. 939 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 940 * @param name service name for SDP record 941 * @param uuid uuid for SDP record 942 * @return a listening RFCOMM BluetoothServerSocket 943 * @throws IOException on error, for example Bluetooth not available, or 944 * insufficient permissions, or channel in use. 945 */ 946 public BluetoothServerSocket listenUsingRfcommWithServiceRecord(String name, UUID uuid) 947 throws IOException { 948 return createNewRfcommSocketAndRecord(name, uuid, true, true); 949 } 950 951 /** 952 * Create a listening, insecure RFCOMM Bluetooth socket with Service Record. 953 * <p>The link key is not required to be authenticated, i.e the communication may be 954 * vulnerable to Man In the Middle attacks. For Bluetooth 2.1 devices, 955 * the link will be encrypted, as encryption is mandartory. 956 * For legacy devices (pre Bluetooth 2.1 devices) the link will not 957 * be encrypted. Use {@link #listenUsingRfcommWithServiceRecord}, if an 958 * encrypted and authenticated communication channel is desired. 959 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 960 * connections from a listening {@link BluetoothServerSocket}. 961 * <p>The system will assign an unused RFCOMM channel to listen on. 962 * <p>The system will also register a Service Discovery 963 * Protocol (SDP) record with the local SDP server containing the specified 964 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 965 * can use the same UUID to query our SDP server and discover which channel 966 * to connect to. This SDP record will be removed when this socket is 967 * closed, or if this application closes unexpectedly. 968 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 969 * connect to this socket from another device using the same {@link UUID}. 970 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 971 * @param name service name for SDP record 972 * @param uuid uuid for SDP record 973 * @return a listening RFCOMM BluetoothServerSocket 974 * @throws IOException on error, for example Bluetooth not available, or 975 * insufficient permissions, or channel in use. 976 */ 977 public BluetoothServerSocket listenUsingInsecureRfcommWithServiceRecord(String name, UUID uuid) 978 throws IOException { 979 return createNewRfcommSocketAndRecord(name, uuid, false, false); 980 } 981 982 /** 983 * Create a listening, encrypted, 984 * RFCOMM Bluetooth socket with Service Record. 985 * <p>The link will be encrypted, but the link key is not required to be authenticated 986 * i.e the communication is vulnerable to Man In the Middle attacks. Use 987 * {@link #listenUsingRfcommWithServiceRecord}, to ensure an authenticated link key. 988 * <p> Use this socket if authentication of link key is not possible. 989 * For example, for Bluetooth 2.1 devices, if any of the devices does not have 990 * an input and output capability or just has the ability to display a numeric key, 991 * a secure socket connection is not possible and this socket can be used. 992 * Use {@link #listenUsingInsecureRfcommWithServiceRecord}, if encryption is not required. 993 * For Bluetooth 2.1 devices, the link will be encrypted, as encryption is mandartory. 994 * For more details, refer to the Security Model section 5.2 (vol 3) of 995 * Bluetooth Core Specification version 2.1 + EDR. 996 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 997 * connections from a listening {@link BluetoothServerSocket}. 998 * <p>The system will assign an unused RFCOMM channel to listen on. 999 * <p>The system will also register a Service Discovery 1000 * Protocol (SDP) record with the local SDP server containing the specified 1001 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 1002 * can use the same UUID to query our SDP server and discover which channel 1003 * to connect to. This SDP record will be removed when this socket is 1004 * closed, or if this application closes unexpectedly. 1005 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 1006 * connect to this socket from another device using the same {@link UUID}. 1007 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1008 * @param name service name for SDP record 1009 * @param uuid uuid for SDP record 1010 * @return a listening RFCOMM BluetoothServerSocket 1011 * @throws IOException on error, for example Bluetooth not available, or 1012 * insufficient permissions, or channel in use. 1013 * @hide 1014 */ 1015 public BluetoothServerSocket listenUsingEncryptedRfcommWithServiceRecord( 1016 String name, UUID uuid) throws IOException { 1017 return createNewRfcommSocketAndRecord(name, uuid, false, true); 1018 } 1019 1020 1021 private BluetoothServerSocket createNewRfcommSocketAndRecord(String name, UUID uuid, 1022 boolean auth, boolean encrypt) throws IOException { 1023 BluetoothServerSocket socket; 1024 socket = new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, auth, 1025 encrypt, new ParcelUuid(uuid)); 1026 socket.setServiceName(name); 1027 int errno = socket.mSocket.bindListen(); 1028 if (errno != 0) { 1029 //TODO(BT): Throw the same exception error code 1030 // that the previous code was using. 1031 //socket.mSocket.throwErrnoNative(errno); 1032 throw new IOException("Error: " + errno); 1033 } 1034 return socket; 1035 } 1036 1037 /** 1038 * Construct an unencrypted, unauthenticated, RFCOMM server socket. 1039 * Call #accept to retrieve connections to this socket. 1040 * @return An RFCOMM BluetoothServerSocket 1041 * @throws IOException On error, for example Bluetooth not available, or 1042 * insufficient permissions. 1043 * @hide 1044 */ 1045 public BluetoothServerSocket listenUsingInsecureRfcommOn(int port) throws IOException { 1046 BluetoothServerSocket socket = new BluetoothServerSocket( 1047 BluetoothSocket.TYPE_RFCOMM, false, false, port); 1048 int errno = socket.mSocket.bindListen(); 1049 if (errno != 0) { 1050 //TODO(BT): Throw the same exception error code 1051 // that the previous code was using. 1052 //socket.mSocket.throwErrnoNative(errno); 1053 throw new IOException("Error: " + errno); 1054 } 1055 return socket; 1056 } 1057 1058 /** 1059 * Construct an encrypted, RFCOMM server socket. 1060 * Call #accept to retrieve connections to this socket. 1061 * @return An RFCOMM BluetoothServerSocket 1062 * @throws IOException On error, for example Bluetooth not available, or 1063 * insufficient permissions. 1064 * @hide 1065 */ 1066 public BluetoothServerSocket listenUsingEncryptedRfcommOn(int port) 1067 throws IOException { 1068 BluetoothServerSocket socket = new BluetoothServerSocket( 1069 BluetoothSocket.TYPE_RFCOMM, false, true, port); 1070 int errno = socket.mSocket.bindListen(); 1071 if (errno < 0) { 1072 //TODO(BT): Throw the same exception error code 1073 // that the previous code was using. 1074 //socket.mSocket.throwErrnoNative(errno); 1075 throw new IOException("Error: " + errno); 1076 } 1077 return socket; 1078 } 1079 1080 /** 1081 * Construct a SCO server socket. 1082 * Call #accept to retrieve connections to this socket. 1083 * @return A SCO BluetoothServerSocket 1084 * @throws IOException On error, for example Bluetooth not available, or 1085 * insufficient permissions. 1086 * @hide 1087 */ 1088 public static BluetoothServerSocket listenUsingScoOn() throws IOException { 1089 BluetoothServerSocket socket = new BluetoothServerSocket( 1090 BluetoothSocket.TYPE_SCO, false, false, -1); 1091 int errno = socket.mSocket.bindListen(); 1092 if (errno < 0) { 1093 //TODO(BT): Throw the same exception error code 1094 // that the previous code was using. 1095 //socket.mSocket.throwErrnoNative(errno); 1096 } 1097 return socket; 1098 } 1099 1100 /** 1101 * Read the local Out of Band Pairing Data 1102 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1103 * 1104 * @return Pair<byte[], byte[]> of Hash and Randomizer 1105 * 1106 * @hide 1107 */ 1108 public Pair<byte[], byte[]> readOutOfBandData() { 1109 if (getState() != STATE_ON) return null; 1110 //TODO(BT 1111 /* 1112 try { 1113 byte[] hash; 1114 byte[] randomizer; 1115 1116 byte[] ret = mService.readOutOfBandData(); 1117 1118 if (ret == null || ret.length != 32) return null; 1119 1120 hash = Arrays.copyOfRange(ret, 0, 16); 1121 randomizer = Arrays.copyOfRange(ret, 16, 32); 1122 1123 if (DBG) { 1124 Log.d(TAG, "readOutOfBandData:" + Arrays.toString(hash) + 1125 ":" + Arrays.toString(randomizer)); 1126 } 1127 return new Pair<byte[], byte[]>(hash, randomizer); 1128 1129 } catch (RemoteException e) {Log.e(TAG, "", e);}*/ 1130 return null; 1131 } 1132 1133 /** 1134 * Get the profile proxy object associated with the profile. 1135 * 1136 * <p>Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET} or 1137 * {@link BluetoothProfile#A2DP}. Clients must implements 1138 * {@link BluetoothProfile.ServiceListener} to get notified of 1139 * the connection status and to get the proxy object. 1140 * 1141 * @param context Context of the application 1142 * @param listener The service Listener for connection callbacks. 1143 * @param profile The Bluetooth profile; either {@link BluetoothProfile#HEALTH}, 1144 * {@link BluetoothProfile#HEADSET} or {@link BluetoothProfile#A2DP}. 1145 * @return true on success, false on error 1146 */ 1147 public boolean getProfileProxy(Context context, BluetoothProfile.ServiceListener listener, 1148 int profile) { 1149 if (context == null || listener == null) return false; 1150 1151 if (profile == BluetoothProfile.HEADSET) { 1152 BluetoothHeadset headset = new BluetoothHeadset(context, listener); 1153 return true; 1154 } else if (profile == BluetoothProfile.A2DP) { 1155 BluetoothA2dp a2dp = new BluetoothA2dp(context, listener); 1156 return true; 1157 } else if (profile == BluetoothProfile.INPUT_DEVICE) { 1158 BluetoothInputDevice iDev = new BluetoothInputDevice(context, listener); 1159 return true; 1160 } else if (profile == BluetoothProfile.PAN) { 1161 BluetoothPan pan = new BluetoothPan(context, listener); 1162 return true; 1163 } else if (profile == BluetoothProfile.HEALTH) { 1164 BluetoothHealth health = new BluetoothHealth(context, listener); 1165 return true; 1166 } else { 1167 return false; 1168 } 1169 } 1170 1171 /** 1172 * Close the connection of the profile proxy to the Service. 1173 * 1174 * <p> Clients should call this when they are no longer using 1175 * the proxy obtained from {@link #getProfileProxy}. 1176 * Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET} or 1177 * {@link BluetoothProfile#A2DP} 1178 * 1179 * @param profile 1180 * @param proxy Profile proxy object 1181 */ 1182 public void closeProfileProxy(int profile, BluetoothProfile proxy) { 1183 if (proxy == null) return; 1184 1185 switch (profile) { 1186 case BluetoothProfile.HEADSET: 1187 BluetoothHeadset headset = (BluetoothHeadset)proxy; 1188 headset.close(); 1189 break; 1190 case BluetoothProfile.A2DP: 1191 BluetoothA2dp a2dp = (BluetoothA2dp)proxy; 1192 a2dp.close(); 1193 break; 1194 case BluetoothProfile.INPUT_DEVICE: 1195 BluetoothInputDevice iDev = (BluetoothInputDevice)proxy; 1196 iDev.close(); 1197 break; 1198 case BluetoothProfile.PAN: 1199 BluetoothPan pan = (BluetoothPan)proxy; 1200 pan.close(); 1201 break; 1202 case BluetoothProfile.HEALTH: 1203 BluetoothHealth health = (BluetoothHealth)proxy; 1204 health.close(); 1205 break; 1206 } 1207 } 1208 1209 final private IBluetoothManagerCallback mManagerCallback = 1210 new IBluetoothManagerCallback.Stub() { 1211 public void onBluetoothServiceUp(IBluetooth bluetoothService) { 1212 if (DBG) Log.d(TAG, "onBluetoothServiceUp: " + bluetoothService); 1213 synchronized (mManagerCallback) { 1214 mService = bluetoothService; 1215 } 1216 } 1217 1218 public void onBluetoothServiceDown() { 1219 if (DBG) Log.d(TAG, "onBluetoothServiceDown: " + mService); 1220 synchronized (mManagerCallback) { 1221 mService = null; 1222 } 1223 } 1224 }; 1225 1226 /** 1227 * Enable the Bluetooth Adapter, but don't auto-connect devices 1228 * and don't persist state. Only for use by system applications. 1229 * @hide 1230 */ 1231 public boolean enableNoAutoConnect() { 1232 try { 1233 return mService.enableNoAutoConnect(); 1234 } catch (RemoteException e) {Log.e(TAG, "", e);} 1235 return false; 1236 } 1237 1238 /** 1239 * Enable control of the Bluetooth Adapter for a single application. 1240 * 1241 * <p>Some applications need to use Bluetooth for short periods of time to 1242 * transfer data but don't want all the associated implications like 1243 * automatic connection to headsets etc. 1244 * 1245 * <p> Multiple applications can call this. This is reference counted and 1246 * Bluetooth disabled only when no one else is using it. There will be no UI 1247 * shown to the user while bluetooth is being enabled. Any user action will 1248 * override this call. For example, if user wants Bluetooth on and the last 1249 * user of this API wanted to disable Bluetooth, Bluetooth will not be 1250 * turned off. 1251 * 1252 * <p> This API is only meant to be used by internal applications. Third 1253 * party applications but use {@link #enable} and {@link #disable} APIs. 1254 * 1255 * <p> If this API returns true, it means the callback will be called. 1256 * The callback will be called with the current state of Bluetooth. 1257 * If the state is not what was requested, an internal error would be the 1258 * reason. If Bluetooth is already on and if this function is called to turn 1259 * it on, the api will return true and a callback will be called. 1260 * 1261 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1262 * 1263 * @param on True for on, false for off. 1264 * @param callback The callback to notify changes to the state. 1265 * @hide 1266 */ 1267 public boolean changeApplicationBluetoothState(boolean on, 1268 BluetoothStateChangeCallback callback) { 1269 if (callback == null) return false; 1270 1271 //TODO(BT) 1272 /* 1273 try { 1274 return mService.changeApplicationBluetoothState(on, new 1275 StateChangeCallbackWrapper(callback), new Binder()); 1276 } catch (RemoteException e) { 1277 Log.e(TAG, "changeBluetoothState", e); 1278 }*/ 1279 return false; 1280 } 1281 1282 /** 1283 * @hide 1284 */ 1285 public interface BluetoothStateChangeCallback { 1286 public void onBluetoothStateChange(boolean on); 1287 } 1288 1289 /** 1290 * @hide 1291 */ 1292 public class StateChangeCallbackWrapper extends IBluetoothStateChangeCallback.Stub { 1293 private BluetoothStateChangeCallback mCallback; 1294 1295 StateChangeCallbackWrapper(BluetoothStateChangeCallback 1296 callback) { 1297 mCallback = callback; 1298 } 1299 1300 @Override 1301 public void onBluetoothStateChange(boolean on) { 1302 mCallback.onBluetoothStateChange(on); 1303 } 1304 } 1305 1306 private Set<BluetoothDevice> toDeviceSet(BluetoothDevice[] devices) { 1307 Set<BluetoothDevice> deviceSet = new HashSet<BluetoothDevice>(Arrays.asList(devices)); 1308 return Collections.unmodifiableSet(deviceSet); 1309 } 1310 1311 protected void finalize() throws Throwable { 1312 try { 1313 mManagerService.unregisterAdapter(mManagerCallback); 1314 } catch (RemoteException e) { 1315 Log.e(TAG, "", e); 1316 } finally { 1317 super.finalize(); 1318 } 1319 } 1320 1321 1322 /** 1323 * Validate a String Bluetooth address, such as "00:43:A8:23:10:F0" 1324 * <p>Alphabetic characters must be uppercase to be valid. 1325 * 1326 * @param address Bluetooth address as string 1327 * @return true if the address is valid, false otherwise 1328 */ 1329 public static boolean checkBluetoothAddress(String address) { 1330 if (address == null || address.length() != ADDRESS_LENGTH) { 1331 return false; 1332 } 1333 for (int i = 0; i < ADDRESS_LENGTH; i++) { 1334 char c = address.charAt(i); 1335 switch (i % 3) { 1336 case 0: 1337 case 1: 1338 if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F')) { 1339 // hex character, OK 1340 break; 1341 } 1342 return false; 1343 case 2: 1344 if (c == ':') { 1345 break; // OK 1346 } 1347 return false; 1348 } 1349 } 1350 return true; 1351 } 1352 1353 /*package*/ IBluetoothManager getBluetoothManager() { 1354 return mManagerService; 1355 } 1356 1357 /*package*/ IBluetooth getBluetoothService() { 1358 synchronized (mManagerCallback) { 1359 return mService; 1360 } 1361 } 1362} 1363