BluetoothAdapter.java revision 903ac6f399dcd4f574bf388daa7b5f5907d448d3
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.ArrayList; 35import java.util.Arrays; 36import java.util.Collections; 37import java.util.HashSet; 38import java.util.LinkedList; 39import java.util.Random; 40import java.util.Set; 41import java.util.UUID; 42 43/** 44 * Represents the local device Bluetooth adapter. The {@link BluetoothAdapter} 45 * lets you perform fundamental Bluetooth tasks, such as initiate 46 * device discovery, query a list of bonded (paired) devices, 47 * instantiate a {@link BluetoothDevice} using a known MAC address, and create 48 * a {@link BluetoothServerSocket} to listen for connection requests from other 49 * devices. 50 * 51 * <p>To get a {@link BluetoothAdapter} representing the local Bluetooth 52 * adapter, call the static {@link #getDefaultAdapter} method. 53 * Fundamentally, this is your starting point for all 54 * Bluetooth actions. Once you have the local adapter, you can get a set of 55 * {@link BluetoothDevice} objects representing all paired devices with 56 * {@link #getBondedDevices()}; start device discovery with 57 * {@link #startDiscovery()}; or create a {@link BluetoothServerSocket} to 58 * listen for incoming connection requests with 59 * {@link #listenUsingRfcommWithServiceRecord(String,UUID)}. 60 * 61 * <p class="note"><strong>Note:</strong> 62 * Most methods require the {@link android.Manifest.permission#BLUETOOTH} 63 * permission and some also require the 64 * {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 65 * 66 * <div class="special reference"> 67 * <h3>Developer Guides</h3> 68 * <p>For more information about using Bluetooth, read the 69 * <a href="{@docRoot}guide/topics/wireless/bluetooth.html">Bluetooth</a> developer guide.</p> 70 * </div> 71 * 72 * {@see BluetoothDevice} 73 * {@see BluetoothServerSocket} 74 */ 75public final class BluetoothAdapter { 76 private static final String TAG = "BluetoothAdapter"; 77 private static final boolean DBG = true; 78 79 /** 80 * Sentinel error value for this class. Guaranteed to not equal any other 81 * integer constant in this class. Provided as a convenience for functions 82 * that require a sentinel error value, for example: 83 * <p><code>Intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, 84 * BluetoothAdapter.ERROR)</code> 85 */ 86 public static final int ERROR = Integer.MIN_VALUE; 87 88 /** 89 * Broadcast Action: The state of the local Bluetooth adapter has been 90 * changed. 91 * <p>For example, Bluetooth has been turned on or off. 92 * <p>Always contains the extra fields {@link #EXTRA_STATE} and {@link 93 * #EXTRA_PREVIOUS_STATE} containing the new and old states 94 * respectively. 95 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 96 */ 97 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 98 public static final String ACTION_STATE_CHANGED = 99 "android.bluetooth.adapter.action.STATE_CHANGED"; 100 101 /** 102 * Used as an int extra field in {@link #ACTION_STATE_CHANGED} 103 * intents to request the current power state. Possible values are: 104 * {@link #STATE_OFF}, 105 * {@link #STATE_TURNING_ON}, 106 * {@link #STATE_ON}, 107 * {@link #STATE_TURNING_OFF}, 108 */ 109 public static final String EXTRA_STATE = 110 "android.bluetooth.adapter.extra.STATE"; 111 /** 112 * Used as an int extra field in {@link #ACTION_STATE_CHANGED} 113 * intents to request the previous power state. Possible values are: 114 * {@link #STATE_OFF}, 115 * {@link #STATE_TURNING_ON}, 116 * {@link #STATE_ON}, 117 * {@link #STATE_TURNING_OFF}, 118 */ 119 public static final String EXTRA_PREVIOUS_STATE = 120 "android.bluetooth.adapter.extra.PREVIOUS_STATE"; 121 122 /** 123 * Indicates the local Bluetooth adapter is off. 124 */ 125 public static final int STATE_OFF = 10; 126 /** 127 * Indicates the local Bluetooth adapter is turning on. However local 128 * clients should wait for {@link #STATE_ON} before attempting to 129 * use the adapter. 130 */ 131 public static final int STATE_TURNING_ON = 11; 132 /** 133 * Indicates the local Bluetooth adapter is on, and ready for use. 134 */ 135 public static final int STATE_ON = 12; 136 /** 137 * Indicates the local Bluetooth adapter is turning off. Local clients 138 * should immediately attempt graceful disconnection of any remote links. 139 */ 140 public static final int STATE_TURNING_OFF = 13; 141 142 /** 143 * Activity Action: Show a system activity that requests discoverable mode. 144 * This activity will also request the user to turn on Bluetooth if it 145 * is not currently enabled. 146 * <p>Discoverable mode is equivalent to {@link 147 * #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. It allows remote devices to see 148 * this Bluetooth adapter when they perform a discovery. 149 * <p>For privacy, Android is not discoverable by default. 150 * <p>The sender of this Intent can optionally use extra field {@link 151 * #EXTRA_DISCOVERABLE_DURATION} to request the duration of 152 * discoverability. Currently the default duration is 120 seconds, and 153 * maximum duration is capped at 300 seconds for each request. 154 * <p>Notification of the result of this activity is posted using the 155 * {@link android.app.Activity#onActivityResult} callback. The 156 * <code>resultCode</code> 157 * will be the duration (in seconds) of discoverability or 158 * {@link android.app.Activity#RESULT_CANCELED} if the user rejected 159 * discoverability or an error has occurred. 160 * <p>Applications can also listen for {@link #ACTION_SCAN_MODE_CHANGED} 161 * for global notification whenever the scan mode changes. For example, an 162 * application can be notified when the device has ended discoverability. 163 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 164 */ 165 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 166 public static final String ACTION_REQUEST_DISCOVERABLE = 167 "android.bluetooth.adapter.action.REQUEST_DISCOVERABLE"; 168 169 /** 170 * Used as an optional int extra field in {@link 171 * #ACTION_REQUEST_DISCOVERABLE} intents to request a specific duration 172 * for discoverability in seconds. The current default is 120 seconds, and 173 * requests over 300 seconds will be capped. These values could change. 174 */ 175 public static final String EXTRA_DISCOVERABLE_DURATION = 176 "android.bluetooth.adapter.extra.DISCOVERABLE_DURATION"; 177 178 /** 179 * Activity Action: Show a system activity that allows the user to turn on 180 * Bluetooth. 181 * <p>This system activity will return once Bluetooth has completed turning 182 * on, or the user has decided not to turn Bluetooth on. 183 * <p>Notification of the result of this activity is posted using the 184 * {@link android.app.Activity#onActivityResult} callback. The 185 * <code>resultCode</code> 186 * will be {@link android.app.Activity#RESULT_OK} if Bluetooth has been 187 * turned on or {@link android.app.Activity#RESULT_CANCELED} if the user 188 * has rejected the request or an error has occurred. 189 * <p>Applications can also listen for {@link #ACTION_STATE_CHANGED} 190 * for global notification whenever Bluetooth is turned on or off. 191 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 192 */ 193 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 194 public static final String ACTION_REQUEST_ENABLE = 195 "android.bluetooth.adapter.action.REQUEST_ENABLE"; 196 197 /** 198 * Broadcast Action: Indicates the Bluetooth scan mode of the local Adapter 199 * has changed. 200 * <p>Always contains the extra fields {@link #EXTRA_SCAN_MODE} and {@link 201 * #EXTRA_PREVIOUS_SCAN_MODE} containing the new and old scan modes 202 * respectively. 203 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 204 */ 205 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 206 public static final String ACTION_SCAN_MODE_CHANGED = 207 "android.bluetooth.adapter.action.SCAN_MODE_CHANGED"; 208 209 /** 210 * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED} 211 * intents to request the current scan mode. Possible values are: 212 * {@link #SCAN_MODE_NONE}, 213 * {@link #SCAN_MODE_CONNECTABLE}, 214 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}, 215 */ 216 public static final String EXTRA_SCAN_MODE = "android.bluetooth.adapter.extra.SCAN_MODE"; 217 /** 218 * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED} 219 * intents to request the previous scan mode. Possible values are: 220 * {@link #SCAN_MODE_NONE}, 221 * {@link #SCAN_MODE_CONNECTABLE}, 222 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}, 223 */ 224 public static final String EXTRA_PREVIOUS_SCAN_MODE = 225 "android.bluetooth.adapter.extra.PREVIOUS_SCAN_MODE"; 226 227 /** 228 * Indicates that both inquiry scan and page scan are disabled on the local 229 * Bluetooth adapter. Therefore this device is neither discoverable 230 * nor connectable from remote Bluetooth devices. 231 */ 232 public static final int SCAN_MODE_NONE = 20; 233 /** 234 * Indicates that inquiry scan is disabled, but page scan is enabled on the 235 * local Bluetooth adapter. Therefore this device is not discoverable from 236 * remote Bluetooth devices, but is connectable from remote devices that 237 * have previously discovered this device. 238 */ 239 public static final int SCAN_MODE_CONNECTABLE = 21; 240 /** 241 * Indicates that both inquiry scan and page scan are enabled on the local 242 * Bluetooth adapter. Therefore this device is both discoverable and 243 * connectable from remote Bluetooth devices. 244 */ 245 public static final int SCAN_MODE_CONNECTABLE_DISCOVERABLE = 23; 246 247 248 /** 249 * Broadcast Action: The local Bluetooth adapter has started the remote 250 * device discovery process. 251 * <p>This usually involves an inquiry scan of about 12 seconds, followed 252 * by a page scan of each new device to retrieve its Bluetooth name. 253 * <p>Register for {@link BluetoothDevice#ACTION_FOUND} to be notified as 254 * remote Bluetooth devices are found. 255 * <p>Device discovery is a heavyweight procedure. New connections to 256 * remote Bluetooth devices should not be attempted while discovery is in 257 * progress, and existing connections will experience limited bandwidth 258 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 259 * discovery. 260 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 261 */ 262 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 263 public static final String ACTION_DISCOVERY_STARTED = 264 "android.bluetooth.adapter.action.DISCOVERY_STARTED"; 265 /** 266 * Broadcast Action: The local Bluetooth adapter has finished the device 267 * discovery process. 268 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 269 */ 270 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 271 public static final String ACTION_DISCOVERY_FINISHED = 272 "android.bluetooth.adapter.action.DISCOVERY_FINISHED"; 273 274 /** 275 * Broadcast Action: The local Bluetooth adapter has changed its friendly 276 * Bluetooth name. 277 * <p>This name is visible to remote Bluetooth devices. 278 * <p>Always contains the extra field {@link #EXTRA_LOCAL_NAME} containing 279 * the name. 280 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 281 */ 282 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 283 public static final String ACTION_LOCAL_NAME_CHANGED = 284 "android.bluetooth.adapter.action.LOCAL_NAME_CHANGED"; 285 /** 286 * Used as a String extra field in {@link #ACTION_LOCAL_NAME_CHANGED} 287 * intents to request the local Bluetooth name. 288 */ 289 public static final String EXTRA_LOCAL_NAME = "android.bluetooth.adapter.extra.LOCAL_NAME"; 290 291 /** 292 * Intent used to broadcast the change in connection state of the local 293 * Bluetooth adapter to a profile of the remote device. When the adapter is 294 * not connected to any profiles of any remote devices and it attempts a 295 * connection to a profile this intent will sent. Once connected, this intent 296 * will not be sent for any more connection attempts to any profiles of any 297 * remote device. When the adapter disconnects from the last profile its 298 * connected to of any remote device, this intent will be sent. 299 * 300 * <p> This intent is useful for applications that are only concerned about 301 * whether the local adapter is connected to any profile of any device and 302 * are not really concerned about which profile. For example, an application 303 * which displays an icon to display whether Bluetooth is connected or not 304 * can use this intent. 305 * 306 * <p>This intent will have 3 extras: 307 * {@link #EXTRA_CONNECTION_STATE} - The current connection state. 308 * {@link #EXTRA_PREVIOUS_CONNECTION_STATE}- The previous connection state. 309 * {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. 310 * 311 * {@link #EXTRA_CONNECTION_STATE} or {@link #EXTRA_PREVIOUS_CONNECTION_STATE} 312 * can be any of {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, 313 * {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}. 314 * 315 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 316 */ 317 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 318 public static final String ACTION_CONNECTION_STATE_CHANGED = 319 "android.bluetooth.adapter.action.CONNECTION_STATE_CHANGED"; 320 321 /** 322 * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED} 323 * 324 * This extra represents the current connection state. 325 */ 326 public static final String EXTRA_CONNECTION_STATE = 327 "android.bluetooth.adapter.extra.CONNECTION_STATE"; 328 329 /** 330 * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED} 331 * 332 * This extra represents the previous connection state. 333 */ 334 public static final String EXTRA_PREVIOUS_CONNECTION_STATE = 335 "android.bluetooth.adapter.extra.PREVIOUS_CONNECTION_STATE"; 336 337 /** The profile is in disconnected state */ 338 public static final int STATE_DISCONNECTED = 0; 339 /** The profile is in connecting state */ 340 public static final int STATE_CONNECTING = 1; 341 /** The profile is in connected state */ 342 public static final int STATE_CONNECTED = 2; 343 /** The profile is in disconnecting state */ 344 public static final int STATE_DISCONNECTING = 3; 345 346 /** @hide */ 347 public static final String BLUETOOTH_MANAGER_SERVICE = "bluetooth_manager"; 348 349 private static final int ADDRESS_LENGTH = 17; 350 351 /** 352 * Lazily initialized singleton. Guaranteed final after first object 353 * constructed. 354 */ 355 private static BluetoothAdapter sAdapter; 356 357 private final IBluetoothManager mManagerService; 358 private IBluetooth mService; 359 360 private Handler mServiceRecordHandler; 361 362 /** 363 * Get a handle to the default local Bluetooth adapter. 364 * <p>Currently Android only supports one Bluetooth adapter, but the API 365 * could be extended to support more. This will always return the default 366 * adapter. 367 * @return the default local adapter, or null if Bluetooth is not supported 368 * on this hardware platform 369 */ 370 public static synchronized BluetoothAdapter getDefaultAdapter() { 371 if (sAdapter == null) { 372 IBinder b = ServiceManager.getService(BLUETOOTH_MANAGER_SERVICE); 373 if (b != null) { 374 IBluetoothManager managerService = IBluetoothManager.Stub.asInterface(b); 375 sAdapter = new BluetoothAdapter(managerService); 376 } else { 377 Log.e(TAG, "Bluetooth binder is null"); 378 } 379 } 380 return sAdapter; 381 } 382 383 /** 384 * Use {@link #getDefaultAdapter} to get the BluetoothAdapter instance. 385 */ 386 BluetoothAdapter(IBluetoothManager managerService) { 387 388 if (managerService == null) { 389 throw new IllegalArgumentException("bluetooth manager service is null"); 390 } 391 try { 392 mService = managerService.registerAdapter(mManagerCallback); 393 } catch (RemoteException e) {Log.e(TAG, "", e);} 394 mManagerService = managerService; 395 mServiceRecordHandler = null; 396 } 397 398 /** 399 * Get a {@link BluetoothDevice} object for the given Bluetooth hardware 400 * address. 401 * <p>Valid Bluetooth hardware addresses must be upper case, in a format 402 * such as "00:11:22:33:AA:BB". The helper {@link #checkBluetoothAddress} is 403 * available to validate a Bluetooth address. 404 * <p>A {@link BluetoothDevice} will always be returned for a valid 405 * hardware address, even if this adapter has never seen that device. 406 * 407 * @param address valid Bluetooth MAC address 408 * @throws IllegalArgumentException if address is invalid 409 */ 410 public BluetoothDevice getRemoteDevice(String address) { 411 return new BluetoothDevice(address); 412 } 413 414 /** 415 * Get a {@link BluetoothDevice} object for the given Bluetooth hardware 416 * address. 417 * <p>Valid Bluetooth hardware addresses must be 6 bytes. This method 418 * expects the address in network byte order (MSB first). 419 * <p>A {@link BluetoothDevice} will always be returned for a valid 420 * hardware address, even if this adapter has never seen that device. 421 * 422 * @param address Bluetooth MAC address (6 bytes) 423 * @throws IllegalArgumentException if address is invalid 424 */ 425 public BluetoothDevice getRemoteDevice(byte[] address) { 426 if (address == null || address.length != 6) { 427 throw new IllegalArgumentException("Bluetooth address must have 6 bytes"); 428 } 429 return new BluetoothDevice(String.format("%02X:%02X:%02X:%02X:%02X:%02X", 430 address[0], address[1], address[2], address[3], address[4], address[5])); 431 } 432 433 /** 434 * Return true if Bluetooth is currently enabled and ready for use. 435 * <p>Equivalent to: 436 * <code>getBluetoothState() == STATE_ON</code> 437 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 438 * 439 * @return true if the local adapter is turned on 440 */ 441 public boolean isEnabled() { 442 443 try { 444 synchronized(mManagerCallback) { 445 if (mService != null) return mService.isEnabled(); 446 } 447 } catch (RemoteException e) {Log.e(TAG, "", e);} 448 return false; 449 } 450 451 /** 452 * Get the current state of the local Bluetooth adapter. 453 * <p>Possible return values are 454 * {@link #STATE_OFF}, 455 * {@link #STATE_TURNING_ON}, 456 * {@link #STATE_ON}, 457 * {@link #STATE_TURNING_OFF}. 458 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 459 * 460 * @return current state of Bluetooth adapter 461 */ 462 public int getState() { 463 try { 464 synchronized(mManagerCallback) { 465 if (mService != null) 466 { 467 return mService.getState(); 468 } 469 // TODO(BT) there might be a small gap during STATE_TURNING_ON that 470 // mService is null, handle that case 471 } 472 } catch (RemoteException e) {Log.e(TAG, "", e);} 473 return STATE_OFF; 474 } 475 476 /** 477 * Turn on the local Bluetooth adapter—do not use without explicit 478 * user action to turn on Bluetooth. 479 * <p>This powers on the underlying Bluetooth hardware, and starts all 480 * Bluetooth system services. 481 * <p class="caution"><strong>Bluetooth should never be enabled without 482 * direct user consent</strong>. If you want to turn on Bluetooth in order 483 * to create a wireless connection, you should use the {@link 484 * #ACTION_REQUEST_ENABLE} Intent, which will raise a dialog that requests 485 * user permission to turn on Bluetooth. The {@link #enable()} method is 486 * provided only for applications that include a user interface for changing 487 * system settings, such as a "power manager" app.</p> 488 * <p>This is an asynchronous call: it will return immediately, and 489 * clients should listen for {@link #ACTION_STATE_CHANGED} 490 * to be notified of subsequent adapter state changes. If this call returns 491 * true, then the adapter state will immediately transition from {@link 492 * #STATE_OFF} to {@link #STATE_TURNING_ON}, and some time 493 * later transition to either {@link #STATE_OFF} or {@link 494 * #STATE_ON}. If this call returns false then there was an 495 * immediate problem that will prevent the adapter from being turned on - 496 * such as Airplane mode, or the adapter is already turned on. 497 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 498 * permission 499 * 500 * @return true to indicate adapter startup has begun, or false on 501 * immediate error 502 */ 503 public boolean enable() { 504 boolean enabled = false; 505 try { 506 return mManagerService.enable(); 507 } catch (RemoteException e) {Log.e(TAG, "", e);} 508 return false; 509 } 510 511 /** 512 * Turn off the local Bluetooth adapter—do not use without explicit 513 * user action to turn off Bluetooth. 514 * <p>This gracefully shuts down all Bluetooth connections, stops Bluetooth 515 * system services, and powers down the underlying Bluetooth hardware. 516 * <p class="caution"><strong>Bluetooth should never be disabled without 517 * direct user consent</strong>. The {@link #disable()} method is 518 * provided only for applications that include a user interface for changing 519 * system settings, such as a "power manager" app.</p> 520 * <p>This is an asynchronous call: it will return immediately, and 521 * clients should listen for {@link #ACTION_STATE_CHANGED} 522 * to be notified of subsequent adapter state changes. If this call returns 523 * true, then the adapter state will immediately transition from {@link 524 * #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time 525 * later transition to either {@link #STATE_OFF} or {@link 526 * #STATE_ON}. If this call returns false then there was an 527 * immediate problem that will prevent the adapter from being turned off - 528 * such as the adapter already being turned off. 529 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 530 * permission 531 * 532 * @return true to indicate adapter shutdown has begun, or false on 533 * immediate error 534 */ 535 public boolean disable() { 536 try { 537 return mManagerService.disable(true); 538 } catch (RemoteException e) {Log.e(TAG, "", e);} 539 return false; 540 } 541 542 /** 543 * Turn off the local Bluetooth adapter and don't persist the setting. 544 * 545 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 546 * permission 547 * 548 * @return true to indicate adapter shutdown has begun, or false on 549 * immediate error 550 * @hide 551 */ 552 public boolean disable(boolean persist) { 553 554 try { 555 return mManagerService.disable(persist); 556 } catch (RemoteException e) {Log.e(TAG, "", e);} 557 return false; 558 } 559 560 /** 561 * Returns the hardware address of the local Bluetooth adapter. 562 * <p>For example, "00:11:22:AA:BB:CC". 563 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 564 * 565 * @return Bluetooth hardware address as string 566 */ 567 public String getAddress() { 568 try { 569 return mManagerService.getAddress(); 570 } catch (RemoteException e) {Log.e(TAG, "", e);} 571 return null; 572 } 573 574 /** 575 * Get the friendly Bluetooth name of the local Bluetooth adapter. 576 * <p>This name is visible to remote Bluetooth devices. 577 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 578 * 579 * @return the Bluetooth name, or null on error 580 */ 581 public String getName() { 582 try { 583 return mManagerService.getName(); 584 } catch (RemoteException e) {Log.e(TAG, "", e);} 585 return null; 586 } 587 588 /** 589 * Get the UUIDs supported by the local Bluetooth adapter. 590 * 591 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 592 * 593 * @return the UUIDs supported by the local Bluetooth Adapter. 594 * @hide 595 */ 596 public ParcelUuid[] getUuids() { 597 if (getState() != STATE_ON) return null; 598 try { 599 synchronized(mManagerCallback) { 600 if (mService != null) return mService.getUuids(); 601 } 602 } catch (RemoteException e) {Log.e(TAG, "", e);} 603 return null; 604 } 605 606 /** 607 * Set the friendly Bluetooth name of the local Bluetooth adapter. 608 * <p>This name is visible to remote Bluetooth devices. 609 * <p>Valid Bluetooth names are a maximum of 248 bytes using UTF-8 610 * encoding, although many remote devices can only display the first 611 * 40 characters, and some may be limited to just 20. 612 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 613 * will return false. After turning on Bluetooth, 614 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 615 * to get the updated value. 616 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} 617 * 618 * @param name a valid Bluetooth name 619 * @return true if the name was set, false otherwise 620 */ 621 public boolean setName(String name) { 622 if (getState() != STATE_ON) return false; 623 try { 624 synchronized(mManagerCallback) { 625 if (mService != null) return mService.setName(name); 626 } 627 } catch (RemoteException e) {Log.e(TAG, "", e);} 628 return false; 629 } 630 631 /** 632 * Get the current Bluetooth scan mode of the local Bluetooth adapter. 633 * <p>The Bluetooth scan mode determines if the local adapter is 634 * connectable and/or discoverable from remote Bluetooth devices. 635 * <p>Possible values are: 636 * {@link #SCAN_MODE_NONE}, 637 * {@link #SCAN_MODE_CONNECTABLE}, 638 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. 639 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 640 * will return {@link #SCAN_MODE_NONE}. After turning on Bluetooth, 641 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 642 * to get the updated value. 643 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 644 * 645 * @return scan mode 646 */ 647 public int getScanMode() { 648 if (getState() != STATE_ON) return SCAN_MODE_NONE; 649 try { 650 synchronized(mManagerCallback) { 651 if (mService != null) return mService.getScanMode(); 652 } 653 } catch (RemoteException e) {Log.e(TAG, "", e);} 654 return SCAN_MODE_NONE; 655 } 656 657 /** 658 * Set the Bluetooth scan mode of the local Bluetooth adapter. 659 * <p>The Bluetooth scan mode determines if the local adapter is 660 * connectable and/or discoverable from remote Bluetooth devices. 661 * <p>For privacy reasons, discoverable mode is automatically turned off 662 * after <code>duration</code> seconds. For example, 120 seconds should be 663 * enough for a remote device to initiate and complete its discovery 664 * process. 665 * <p>Valid scan mode values are: 666 * {@link #SCAN_MODE_NONE}, 667 * {@link #SCAN_MODE_CONNECTABLE}, 668 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. 669 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 670 * will return false. After turning on Bluetooth, 671 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 672 * to get the updated value. 673 * <p>Requires {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} 674 * <p>Applications cannot set the scan mode. They should use 675 * <code>startActivityForResult( 676 * BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE}) 677 * </code>instead. 678 * 679 * @param mode valid scan mode 680 * @param duration time in seconds to apply scan mode, only used for 681 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE} 682 * @return true if the scan mode was set, false otherwise 683 * @hide 684 */ 685 public boolean setScanMode(int mode, int duration) { 686 if (getState() != STATE_ON) return false; 687 try { 688 synchronized(mManagerCallback) { 689 if (mService != null) return mService.setScanMode(mode, duration); 690 } 691 } catch (RemoteException e) {Log.e(TAG, "", e);} 692 return false; 693 } 694 695 /** @hide */ 696 public boolean setScanMode(int mode) { 697 if (getState() != STATE_ON) return false; 698 /* getDiscoverableTimeout() to use the latest from NV than use 0 */ 699 return setScanMode(mode, getDiscoverableTimeout()); 700 } 701 702 /** @hide */ 703 public int getDiscoverableTimeout() { 704 if (getState() != STATE_ON) return -1; 705 try { 706 synchronized(mManagerCallback) { 707 if (mService != null) return mService.getDiscoverableTimeout(); 708 } 709 } catch (RemoteException e) {Log.e(TAG, "", e);} 710 return -1; 711 } 712 713 /** @hide */ 714 public void setDiscoverableTimeout(int timeout) { 715 if (getState() != STATE_ON) return; 716 try { 717 synchronized(mManagerCallback) { 718 if (mService != null) mService.setDiscoverableTimeout(timeout); 719 } 720 } catch (RemoteException e) {Log.e(TAG, "", e);} 721 } 722 723 /** 724 * Start the remote device discovery process. 725 * <p>The discovery process usually involves an inquiry scan of about 12 726 * seconds, followed by a page scan of each new device to retrieve its 727 * Bluetooth name. 728 * <p>This is an asynchronous call, it will return immediately. Register 729 * for {@link #ACTION_DISCOVERY_STARTED} and {@link 730 * #ACTION_DISCOVERY_FINISHED} intents to determine exactly when the 731 * discovery starts and completes. Register for {@link 732 * BluetoothDevice#ACTION_FOUND} to be notified as remote Bluetooth devices 733 * are found. 734 * <p>Device discovery is a heavyweight procedure. New connections to 735 * remote Bluetooth devices should not be attempted while discovery is in 736 * progress, and existing connections will experience limited bandwidth 737 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 738 * discovery. Discovery is not managed by the Activity, 739 * but is run as a system service, so an application should always call 740 * {@link BluetoothAdapter#cancelDiscovery()} even if it 741 * did not directly request a discovery, just to be sure. 742 * <p>Device discovery will only find remote devices that are currently 743 * <i>discoverable</i> (inquiry scan enabled). Many Bluetooth devices are 744 * not discoverable by default, and need to be entered into a special mode. 745 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 746 * will return false. After turning on Bluetooth, 747 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 748 * to get the updated value. 749 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. 750 * 751 * @return true on success, false on error 752 */ 753 public boolean startDiscovery() { 754 if (getState() != STATE_ON) return false; 755 try { 756 synchronized(mManagerCallback) { 757 if (mService != null) return mService.startDiscovery(); 758 } 759 } catch (RemoteException e) {Log.e(TAG, "", e);} 760 return false; 761 } 762 763 /** 764 * Cancel the current device discovery process. 765 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. 766 * <p>Because discovery is a heavyweight procedure for the Bluetooth 767 * adapter, this method should always be called before attempting to connect 768 * to a remote device with {@link 769 * android.bluetooth.BluetoothSocket#connect()}. Discovery is not managed by 770 * the Activity, but is run as a system service, so an application should 771 * always call cancel discovery even if it did not directly request a 772 * discovery, just to be sure. 773 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 774 * will return false. After turning on Bluetooth, 775 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 776 * to get the updated value. 777 * 778 * @return true on success, false on error 779 */ 780 public boolean cancelDiscovery() { 781 if (getState() != STATE_ON) return false; 782 try { 783 synchronized(mManagerCallback) { 784 if (mService != null) return mService.cancelDiscovery(); 785 } 786 } catch (RemoteException e) {Log.e(TAG, "", e);} 787 return false; 788 } 789 790 /** 791 * Return true if the local Bluetooth adapter is currently in the device 792 * discovery process. 793 * <p>Device discovery is a heavyweight procedure. New connections to 794 * remote Bluetooth devices should not be attempted while discovery is in 795 * progress, and existing connections will experience limited bandwidth 796 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 797 * discovery. 798 * <p>Applications can also register for {@link #ACTION_DISCOVERY_STARTED} 799 * or {@link #ACTION_DISCOVERY_FINISHED} to be notified when discovery 800 * starts or completes. 801 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 802 * will return false. After turning on Bluetooth, 803 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 804 * to get the updated value. 805 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 806 * 807 * @return true if discovering 808 */ 809 public boolean isDiscovering() { 810 if (getState() != STATE_ON) return false; 811 try { 812 synchronized(mManagerCallback) { 813 if (mService != null ) return mService.isDiscovering(); 814 } 815 } catch (RemoteException e) {Log.e(TAG, "", e);} 816 return false; 817 } 818 819 /** 820 * Return the set of {@link BluetoothDevice} objects that are bonded 821 * (paired) to the local adapter. 822 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 823 * will return an empty set. After turning on Bluetooth, 824 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 825 * to get the updated value. 826 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 827 * 828 * @return unmodifiable set of {@link BluetoothDevice}, or null on error 829 */ 830 public Set<BluetoothDevice> getBondedDevices() { 831 if (getState() != STATE_ON) { 832 return toDeviceSet(new BluetoothDevice[0]); 833 } 834 try { 835 synchronized(mManagerCallback) { 836 if (mService != null) return toDeviceSet(mService.getBondedDevices()); 837 } 838 return toDeviceSet(new BluetoothDevice[0]); 839 } catch (RemoteException e) {Log.e(TAG, "", e);} 840 return null; 841 } 842 843 /** 844 * Get the current connection state of the local Bluetooth adapter. 845 * This can be used to check whether the local Bluetooth adapter is connected 846 * to any profile of any other remote Bluetooth Device. 847 * 848 * <p> Use this function along with {@link #ACTION_CONNECTION_STATE_CHANGED} 849 * intent to get the connection state of the adapter. 850 * 851 * @return One of {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTED}, 852 * {@link #STATE_CONNECTING} or {@link #STATE_DISCONNECTED} 853 * 854 * @hide 855 */ 856 public int getConnectionState() { 857 if (getState() != STATE_ON) return BluetoothAdapter.STATE_DISCONNECTED; 858 try { 859 synchronized(mManagerCallback) { 860 if (mService != null) return mService.getAdapterConnectionState(); 861 } 862 } catch (RemoteException e) {Log.e(TAG, "getConnectionState:", e);} 863 return BluetoothAdapter.STATE_DISCONNECTED; 864 } 865 866 /** 867 * Get the current connection state of a profile. 868 * This function can be used to check whether the local Bluetooth adapter 869 * is connected to any remote device for a specific profile. 870 * Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET}, 871 * {@link BluetoothProfile#A2DP}. 872 * 873 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 874 * 875 * <p> Return value can be one of 876 * {@link BluetoothProfile#STATE_DISCONNECTED}, 877 * {@link BluetoothProfile#STATE_CONNECTING}, 878 * {@link BluetoothProfile#STATE_CONNECTED}, 879 * {@link BluetoothProfile#STATE_DISCONNECTING} 880 */ 881 public int getProfileConnectionState(int profile) { 882 if (getState() != STATE_ON) return BluetoothProfile.STATE_DISCONNECTED; 883 try { 884 synchronized(mManagerCallback) { 885 if (mService != null) return mService.getProfileConnectionState(profile); 886 } 887 } catch (RemoteException e) { 888 Log.e(TAG, "getProfileConnectionState:", e); 889 } 890 return BluetoothProfile.STATE_DISCONNECTED; 891 } 892 893 /** 894 * Create a listening, secure RFCOMM Bluetooth socket. 895 * <p>A remote device connecting to this socket will be authenticated and 896 * communication on this socket will be encrypted. 897 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 898 * connections from a listening {@link BluetoothServerSocket}. 899 * <p>Valid RFCOMM channels are in range 1 to 30. 900 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} 901 * @param channel RFCOMM channel to listen on 902 * @return a listening RFCOMM BluetoothServerSocket 903 * @throws IOException on error, for example Bluetooth not available, or 904 * insufficient permissions, or channel in use. 905 * @hide 906 */ 907 public BluetoothServerSocket listenUsingRfcommOn(int channel) throws IOException { 908 BluetoothServerSocket socket = new BluetoothServerSocket( 909 BluetoothSocket.TYPE_RFCOMM, true, true, channel); 910 int errno = socket.mSocket.bindListen(); 911 if (errno != 0) { 912 //TODO(BT): Throw the same exception error code 913 // that the previous code was using. 914 //socket.mSocket.throwErrnoNative(errno); 915 throw new IOException("Error: " + errno); 916 } 917 return socket; 918 } 919 920 /** 921 * Create a listening, secure RFCOMM Bluetooth socket with Service Record. 922 * <p>A remote device connecting to this socket will be authenticated and 923 * communication on this socket will be encrypted. 924 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 925 * connections from a listening {@link BluetoothServerSocket}. 926 * <p>The system will assign an unused RFCOMM channel to listen on. 927 * <p>The system will also register a Service Discovery 928 * Protocol (SDP) record with the local SDP server containing the specified 929 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 930 * can use the same UUID to query our SDP server and discover which channel 931 * to connect to. This SDP record will be removed when this socket is 932 * closed, or if this application closes unexpectedly. 933 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 934 * connect to this socket from another device using the same {@link UUID}. 935 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 936 * @param name service name for SDP record 937 * @param uuid uuid for SDP record 938 * @return a listening RFCOMM BluetoothServerSocket 939 * @throws IOException on error, for example Bluetooth not available, or 940 * insufficient permissions, or channel in use. 941 */ 942 public BluetoothServerSocket listenUsingRfcommWithServiceRecord(String name, UUID uuid) 943 throws IOException { 944 return createNewRfcommSocketAndRecord(name, uuid, true, true); 945 } 946 947 /** 948 * Create a listening, insecure RFCOMM Bluetooth socket with Service Record. 949 * <p>The link key is not required to be authenticated, i.e the communication may be 950 * vulnerable to Man In the Middle attacks. For Bluetooth 2.1 devices, 951 * the link will be encrypted, as encryption is mandartory. 952 * For legacy devices (pre Bluetooth 2.1 devices) the link will not 953 * be encrypted. Use {@link #listenUsingRfcommWithServiceRecord}, if an 954 * encrypted and authenticated communication channel is desired. 955 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 956 * connections from a listening {@link BluetoothServerSocket}. 957 * <p>The system will assign an unused RFCOMM channel to listen on. 958 * <p>The system will also register a Service Discovery 959 * Protocol (SDP) record with the local SDP server containing the specified 960 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 961 * can use the same UUID to query our SDP server and discover which channel 962 * to connect to. This SDP record will be removed when this socket is 963 * closed, or if this application closes unexpectedly. 964 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 965 * connect to this socket from another device using the same {@link UUID}. 966 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 967 * @param name service name for SDP record 968 * @param uuid uuid for SDP record 969 * @return a listening RFCOMM BluetoothServerSocket 970 * @throws IOException on error, for example Bluetooth not available, or 971 * insufficient permissions, or channel in use. 972 */ 973 public BluetoothServerSocket listenUsingInsecureRfcommWithServiceRecord(String name, UUID uuid) 974 throws IOException { 975 return createNewRfcommSocketAndRecord(name, uuid, false, false); 976 } 977 978 /** 979 * Create a listening, encrypted, 980 * RFCOMM Bluetooth socket with Service Record. 981 * <p>The link will be encrypted, but the link key is not required to be authenticated 982 * i.e the communication is vulnerable to Man In the Middle attacks. Use 983 * {@link #listenUsingRfcommWithServiceRecord}, to ensure an authenticated link key. 984 * <p> Use this socket if authentication of link key is not possible. 985 * For example, for Bluetooth 2.1 devices, if any of the devices does not have 986 * an input and output capability or just has the ability to display a numeric key, 987 * a secure socket connection is not possible and this socket can be used. 988 * Use {@link #listenUsingInsecureRfcommWithServiceRecord}, if encryption is not required. 989 * For Bluetooth 2.1 devices, the link will be encrypted, as encryption is mandartory. 990 * For more details, refer to the Security Model section 5.2 (vol 3) of 991 * Bluetooth Core Specification version 2.1 + EDR. 992 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 993 * connections from a listening {@link BluetoothServerSocket}. 994 * <p>The system will assign an unused RFCOMM channel to listen on. 995 * <p>The system will also register a Service Discovery 996 * Protocol (SDP) record with the local SDP server containing the specified 997 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 998 * can use the same UUID to query our SDP server and discover which channel 999 * to connect to. This SDP record will be removed when this socket is 1000 * closed, or if this application closes unexpectedly. 1001 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 1002 * connect to this socket from another device using the same {@link UUID}. 1003 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1004 * @param name service name for SDP record 1005 * @param uuid uuid for SDP record 1006 * @return a listening RFCOMM BluetoothServerSocket 1007 * @throws IOException on error, for example Bluetooth not available, or 1008 * insufficient permissions, or channel in use. 1009 * @hide 1010 */ 1011 public BluetoothServerSocket listenUsingEncryptedRfcommWithServiceRecord( 1012 String name, UUID uuid) throws IOException { 1013 return createNewRfcommSocketAndRecord(name, uuid, false, true); 1014 } 1015 1016 1017 private BluetoothServerSocket createNewRfcommSocketAndRecord(String name, UUID uuid, 1018 boolean auth, boolean encrypt) throws IOException { 1019 BluetoothServerSocket socket; 1020 socket = new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, auth, 1021 encrypt, new ParcelUuid(uuid)); 1022 socket.setServiceName(name); 1023 int errno = socket.mSocket.bindListen(); 1024 if (errno != 0) { 1025 //TODO(BT): Throw the same exception error code 1026 // that the previous code was using. 1027 //socket.mSocket.throwErrnoNative(errno); 1028 throw new IOException("Error: " + errno); 1029 } 1030 return socket; 1031 } 1032 1033 /** 1034 * Construct an unencrypted, unauthenticated, RFCOMM server socket. 1035 * Call #accept to retrieve connections to this socket. 1036 * @return An RFCOMM BluetoothServerSocket 1037 * @throws IOException On error, for example Bluetooth not available, or 1038 * insufficient permissions. 1039 * @hide 1040 */ 1041 public BluetoothServerSocket listenUsingInsecureRfcommOn(int port) throws IOException { 1042 BluetoothServerSocket socket = new BluetoothServerSocket( 1043 BluetoothSocket.TYPE_RFCOMM, false, false, port); 1044 int errno = socket.mSocket.bindListen(); 1045 if (errno != 0) { 1046 //TODO(BT): Throw the same exception error code 1047 // that the previous code was using. 1048 //socket.mSocket.throwErrnoNative(errno); 1049 throw new IOException("Error: " + errno); 1050 } 1051 return socket; 1052 } 1053 1054 /** 1055 * Construct an encrypted, RFCOMM server socket. 1056 * Call #accept to retrieve connections to this socket. 1057 * @return An RFCOMM BluetoothServerSocket 1058 * @throws IOException On error, for example Bluetooth not available, or 1059 * insufficient permissions. 1060 * @hide 1061 */ 1062 public BluetoothServerSocket listenUsingEncryptedRfcommOn(int port) 1063 throws IOException { 1064 BluetoothServerSocket socket = new BluetoothServerSocket( 1065 BluetoothSocket.TYPE_RFCOMM, false, true, port); 1066 int errno = socket.mSocket.bindListen(); 1067 if (errno < 0) { 1068 //TODO(BT): Throw the same exception error code 1069 // that the previous code was using. 1070 //socket.mSocket.throwErrnoNative(errno); 1071 throw new IOException("Error: " + errno); 1072 } 1073 return socket; 1074 } 1075 1076 /** 1077 * Construct a SCO server socket. 1078 * Call #accept to retrieve connections to this socket. 1079 * @return A SCO BluetoothServerSocket 1080 * @throws IOException On error, for example Bluetooth not available, or 1081 * insufficient permissions. 1082 * @hide 1083 */ 1084 public static BluetoothServerSocket listenUsingScoOn() throws IOException { 1085 BluetoothServerSocket socket = new BluetoothServerSocket( 1086 BluetoothSocket.TYPE_SCO, false, false, -1); 1087 int errno = socket.mSocket.bindListen(); 1088 if (errno < 0) { 1089 //TODO(BT): Throw the same exception error code 1090 // that the previous code was using. 1091 //socket.mSocket.throwErrnoNative(errno); 1092 } 1093 return socket; 1094 } 1095 1096 /** 1097 * Read the local Out of Band Pairing Data 1098 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1099 * 1100 * @return Pair<byte[], byte[]> of Hash and Randomizer 1101 * 1102 * @hide 1103 */ 1104 public Pair<byte[], byte[]> readOutOfBandData() { 1105 if (getState() != STATE_ON) return null; 1106 //TODO(BT 1107 /* 1108 try { 1109 byte[] hash; 1110 byte[] randomizer; 1111 1112 byte[] ret = mService.readOutOfBandData(); 1113 1114 if (ret == null || ret.length != 32) return null; 1115 1116 hash = Arrays.copyOfRange(ret, 0, 16); 1117 randomizer = Arrays.copyOfRange(ret, 16, 32); 1118 1119 if (DBG) { 1120 Log.d(TAG, "readOutOfBandData:" + Arrays.toString(hash) + 1121 ":" + Arrays.toString(randomizer)); 1122 } 1123 return new Pair<byte[], byte[]>(hash, randomizer); 1124 1125 } catch (RemoteException e) {Log.e(TAG, "", e);}*/ 1126 return null; 1127 } 1128 1129 /** 1130 * Get the profile proxy object associated with the profile. 1131 * 1132 * <p>Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET} or 1133 * {@link BluetoothProfile#A2DP}. Clients must implements 1134 * {@link BluetoothProfile.ServiceListener} to get notified of 1135 * the connection status and to get the proxy object. 1136 * 1137 * @param context Context of the application 1138 * @param listener The service Listener for connection callbacks. 1139 * @param profile The Bluetooth profile; either {@link BluetoothProfile#HEALTH}, 1140 * {@link BluetoothProfile#HEADSET} or {@link BluetoothProfile#A2DP}. 1141 * @return true on success, false on error 1142 */ 1143 public boolean getProfileProxy(Context context, BluetoothProfile.ServiceListener listener, 1144 int profile) { 1145 if (context == null || listener == null) return false; 1146 1147 if (profile == BluetoothProfile.HEADSET) { 1148 BluetoothHeadset headset = new BluetoothHeadset(context, listener); 1149 return true; 1150 } else if (profile == BluetoothProfile.A2DP) { 1151 BluetoothA2dp a2dp = new BluetoothA2dp(context, listener); 1152 return true; 1153 } else if (profile == BluetoothProfile.INPUT_DEVICE) { 1154 BluetoothInputDevice iDev = new BluetoothInputDevice(context, listener); 1155 return true; 1156 } else if (profile == BluetoothProfile.PAN) { 1157 BluetoothPan pan = new BluetoothPan(context, listener); 1158 return true; 1159 } else if (profile == BluetoothProfile.HEALTH) { 1160 BluetoothHealth health = new BluetoothHealth(context, listener); 1161 return true; 1162 } else { 1163 return false; 1164 } 1165 } 1166 1167 /** 1168 * Close the connection of the profile proxy to the Service. 1169 * 1170 * <p> Clients should call this when they are no longer using 1171 * the proxy obtained from {@link #getProfileProxy}. 1172 * Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET} or 1173 * {@link BluetoothProfile#A2DP} 1174 * 1175 * @param profile 1176 * @param proxy Profile proxy object 1177 */ 1178 public void closeProfileProxy(int profile, BluetoothProfile proxy) { 1179 if (proxy == null) return; 1180 1181 switch (profile) { 1182 case BluetoothProfile.HEADSET: 1183 BluetoothHeadset headset = (BluetoothHeadset)proxy; 1184 headset.close(); 1185 break; 1186 case BluetoothProfile.A2DP: 1187 BluetoothA2dp a2dp = (BluetoothA2dp)proxy; 1188 a2dp.close(); 1189 break; 1190 case BluetoothProfile.INPUT_DEVICE: 1191 BluetoothInputDevice iDev = (BluetoothInputDevice)proxy; 1192 iDev.close(); 1193 break; 1194 case BluetoothProfile.PAN: 1195 BluetoothPan pan = (BluetoothPan)proxy; 1196 pan.close(); 1197 break; 1198 case BluetoothProfile.HEALTH: 1199 BluetoothHealth health = (BluetoothHealth)proxy; 1200 health.close(); 1201 break; 1202 } 1203 } 1204 1205 final private IBluetoothManagerCallback mManagerCallback = 1206 new IBluetoothManagerCallback.Stub() { 1207 public void onBluetoothServiceUp(IBluetooth bluetoothService) { 1208 if (DBG) Log.d(TAG, "onBluetoothServiceUp: " + bluetoothService); 1209 synchronized (mManagerCallback) { 1210 mService = bluetoothService; 1211 for (IBluetoothManagerCallback cb : mBluetoothManagerCallbackList ){ 1212 try { 1213 cb.onBluetoothServiceUp(bluetoothService); 1214 } catch (Exception e) { Log.e(TAG,"",e);} 1215 } 1216 } 1217 } 1218 1219 public void onBluetoothServiceDown() { 1220 if (DBG) Log.d(TAG, "onBluetoothServiceDown: " + mService); 1221 synchronized (mManagerCallback) { 1222 mService = null; 1223 for (IBluetoothManagerCallback cb : mBluetoothManagerCallbackList ){ 1224 try { 1225 cb.onBluetoothServiceDown(); 1226 } catch (Exception e) { Log.e(TAG,"",e);} 1227 } 1228 } 1229 } 1230 }; 1231 1232 /** 1233 * Enable the Bluetooth Adapter, but don't auto-connect devices 1234 * and don't persist state. Only for use by system applications. 1235 * @hide 1236 */ 1237 public boolean enableNoAutoConnect() { 1238 try { 1239 return mService.enableNoAutoConnect(); 1240 } catch (RemoteException e) {Log.e(TAG, "", e);} 1241 return false; 1242 } 1243 1244 /** 1245 * Enable control of the Bluetooth Adapter for a single application. 1246 * 1247 * <p>Some applications need to use Bluetooth for short periods of time to 1248 * transfer data but don't want all the associated implications like 1249 * automatic connection to headsets etc. 1250 * 1251 * <p> Multiple applications can call this. This is reference counted and 1252 * Bluetooth disabled only when no one else is using it. There will be no UI 1253 * shown to the user while bluetooth is being enabled. Any user action will 1254 * override this call. For example, if user wants Bluetooth on and the last 1255 * user of this API wanted to disable Bluetooth, Bluetooth will not be 1256 * turned off. 1257 * 1258 * <p> This API is only meant to be used by internal applications. Third 1259 * party applications but use {@link #enable} and {@link #disable} APIs. 1260 * 1261 * <p> If this API returns true, it means the callback will be called. 1262 * The callback will be called with the current state of Bluetooth. 1263 * If the state is not what was requested, an internal error would be the 1264 * reason. If Bluetooth is already on and if this function is called to turn 1265 * it on, the api will return true and a callback will be called. 1266 * 1267 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1268 * 1269 * @param on True for on, false for off. 1270 * @param callback The callback to notify changes to the state. 1271 * @hide 1272 */ 1273 public boolean changeApplicationBluetoothState(boolean on, 1274 BluetoothStateChangeCallback callback) { 1275 if (callback == null) return false; 1276 1277 //TODO(BT) 1278 /* 1279 try { 1280 return mService.changeApplicationBluetoothState(on, new 1281 StateChangeCallbackWrapper(callback), new Binder()); 1282 } catch (RemoteException e) { 1283 Log.e(TAG, "changeBluetoothState", e); 1284 }*/ 1285 return false; 1286 } 1287 1288 /** 1289 * @hide 1290 */ 1291 public interface BluetoothStateChangeCallback { 1292 public void onBluetoothStateChange(boolean on); 1293 } 1294 1295 /** 1296 * @hide 1297 */ 1298 public class StateChangeCallbackWrapper extends IBluetoothStateChangeCallback.Stub { 1299 private BluetoothStateChangeCallback mCallback; 1300 1301 StateChangeCallbackWrapper(BluetoothStateChangeCallback 1302 callback) { 1303 mCallback = callback; 1304 } 1305 1306 @Override 1307 public void onBluetoothStateChange(boolean on) { 1308 mCallback.onBluetoothStateChange(on); 1309 } 1310 } 1311 1312 private Set<BluetoothDevice> toDeviceSet(BluetoothDevice[] devices) { 1313 Set<BluetoothDevice> deviceSet = new HashSet<BluetoothDevice>(Arrays.asList(devices)); 1314 return Collections.unmodifiableSet(deviceSet); 1315 } 1316 1317 protected void finalize() throws Throwable { 1318 try { 1319 mManagerService.unregisterAdapter(mManagerCallback); 1320 } catch (RemoteException e) { 1321 Log.e(TAG, "", e); 1322 } finally { 1323 super.finalize(); 1324 } 1325 } 1326 1327 1328 /** 1329 * Validate a String Bluetooth address, such as "00:43:A8:23:10:F0" 1330 * <p>Alphabetic characters must be uppercase to be valid. 1331 * 1332 * @param address Bluetooth address as string 1333 * @return true if the address is valid, false otherwise 1334 */ 1335 public static boolean checkBluetoothAddress(String address) { 1336 if (address == null || address.length() != ADDRESS_LENGTH) { 1337 return false; 1338 } 1339 for (int i = 0; i < ADDRESS_LENGTH; i++) { 1340 char c = address.charAt(i); 1341 switch (i % 3) { 1342 case 0: 1343 case 1: 1344 if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F')) { 1345 // hex character, OK 1346 break; 1347 } 1348 return false; 1349 case 2: 1350 if (c == ':') { 1351 break; // OK 1352 } 1353 return false; 1354 } 1355 } 1356 return true; 1357 } 1358 1359 /*package*/ IBluetoothManager getBluetoothManager() { 1360 return mManagerService; 1361 } 1362 1363 private ArrayList<IBluetoothManagerCallback> mBluetoothManagerCallbackList = new ArrayList<IBluetoothManagerCallback>(); 1364 //private IBluetoothStateChangeCallback mBluetoothStateChangeCallback; 1365 /*package*/ IBluetooth getBluetoothService(IBluetoothManagerCallback cb) { 1366 synchronized (mManagerCallback) { 1367 if (!mBluetoothManagerCallbackList.contains(cb)) { 1368 mBluetoothManagerCallbackList.add(cb); 1369 } 1370 } 1371 return mService; 1372 } 1373 1374 /*package*/ void removeServiceStateCallback(IBluetoothManagerCallback cb) { 1375 synchronized (mManagerCallback) { 1376 mBluetoothManagerCallbackList.remove(cb); 1377 } 1378 } 1379} 1380