BluetoothAdapter.java revision 6d81118032b92caa0f5cfebe11af02a98f819d5e
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.bluetooth.le.BluetoothLeAdvertiser; 22import android.bluetooth.le.BluetoothLeScanner; 23import android.content.Context; 24import android.os.Handler; 25import android.os.IBinder; 26import android.os.Looper; 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.lang.ref.WeakReference; 35import java.util.ArrayList; 36import java.util.Arrays; 37import java.util.Collections; 38import java.util.HashMap; 39import java.util.HashSet; 40import java.util.Locale; 41import java.util.Map; 42import java.util.Set; 43import java.util.UUID; 44 45/** 46 * Represents the local device Bluetooth adapter. The {@link BluetoothAdapter} 47 * lets you perform fundamental Bluetooth tasks, such as initiate 48 * device discovery, query a list of bonded (paired) devices, 49 * instantiate a {@link BluetoothDevice} using a known MAC address, and create 50 * a {@link BluetoothServerSocket} to listen for connection requests from other 51 * devices, and start a scan for Bluetooth LE devices. 52 * 53 * <p>To get a {@link BluetoothAdapter} representing the local Bluetooth 54 * adapter, when running on JELLY_BEAN_MR1 and below, call the 55 * static {@link #getDefaultAdapter} method; when running on JELLY_BEAN_MR2 and 56 * higher, retrieve it through 57 * {@link android.content.Context#getSystemService} with 58 * {@link android.content.Context#BLUETOOTH_SERVICE}. 59 * Fundamentally, this is your starting point for all 60 * Bluetooth actions. Once you have the local adapter, you can get a set of 61 * {@link BluetoothDevice} objects representing all paired devices with 62 * {@link #getBondedDevices()}; start device discovery with 63 * {@link #startDiscovery()}; or create a {@link BluetoothServerSocket} to 64 * listen for incoming connection requests with 65 * {@link #listenUsingRfcommWithServiceRecord(String,UUID)}; or start a scan for 66 * Bluetooth LE devices with {@link #startLeScan(LeScanCallback callback)}. 67 * 68 * <p class="note"><strong>Note:</strong> 69 * Most methods require the {@link android.Manifest.permission#BLUETOOTH} 70 * permission and some also require the 71 * {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 72 * 73 * <div class="special reference"> 74 * <h3>Developer Guides</h3> 75 * <p>For more information about using Bluetooth, read the 76 * <a href="{@docRoot}guide/topics/wireless/bluetooth.html">Bluetooth</a> developer guide.</p> 77 * </div> 78 * 79 * {@see BluetoothDevice} 80 * {@see BluetoothServerSocket} 81 */ 82public final class BluetoothAdapter { 83 private static final String TAG = "BluetoothAdapter"; 84 private static final boolean DBG = true; 85 private static final boolean VDBG = false; 86 87 /** 88 * Sentinel error value for this class. Guaranteed to not equal any other 89 * integer constant in this class. Provided as a convenience for functions 90 * that require a sentinel error value, for example: 91 * <p><code>Intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, 92 * BluetoothAdapter.ERROR)</code> 93 */ 94 public static final int ERROR = Integer.MIN_VALUE; 95 96 /** 97 * Broadcast Action: The state of the local Bluetooth adapter has been 98 * changed. 99 * <p>For example, Bluetooth has been turned on or off. 100 * <p>Always contains the extra fields {@link #EXTRA_STATE} and {@link 101 * #EXTRA_PREVIOUS_STATE} containing the new and old states 102 * respectively. 103 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 104 */ 105 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 106 public static final String ACTION_STATE_CHANGED = 107 "android.bluetooth.adapter.action.STATE_CHANGED"; 108 109 /** 110 * Used as an int extra field in {@link #ACTION_STATE_CHANGED} 111 * intents to request the current power state. Possible values are: 112 * {@link #STATE_OFF}, 113 * {@link #STATE_TURNING_ON}, 114 * {@link #STATE_ON}, 115 * {@link #STATE_TURNING_OFF}, 116 */ 117 public static final String EXTRA_STATE = 118 "android.bluetooth.adapter.extra.STATE"; 119 /** 120 * Used as an int extra field in {@link #ACTION_STATE_CHANGED} 121 * intents to request the previous power state. Possible values are: 122 * {@link #STATE_OFF}, 123 * {@link #STATE_TURNING_ON}, 124 * {@link #STATE_ON}, 125 * {@link #STATE_TURNING_OFF}, 126 */ 127 public static final String EXTRA_PREVIOUS_STATE = 128 "android.bluetooth.adapter.extra.PREVIOUS_STATE"; 129 130 /** 131 * Indicates the local Bluetooth adapter is off. 132 */ 133 public static final int STATE_OFF = 10; 134 /** 135 * Indicates the local Bluetooth adapter is turning on. However local 136 * clients should wait for {@link #STATE_ON} before attempting to 137 * use the adapter. 138 */ 139 public static final int STATE_TURNING_ON = 11; 140 /** 141 * Indicates the local Bluetooth adapter is on, and ready for use. 142 */ 143 public static final int STATE_ON = 12; 144 /** 145 * Indicates the local Bluetooth adapter is turning off. Local clients 146 * should immediately attempt graceful disconnection of any remote links. 147 */ 148 public static final int STATE_TURNING_OFF = 13; 149 150 /** 151 * Activity Action: Show a system activity that requests discoverable mode. 152 * This activity will also request the user to turn on Bluetooth if it 153 * is not currently enabled. 154 * <p>Discoverable mode is equivalent to {@link 155 * #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. It allows remote devices to see 156 * this Bluetooth adapter when they perform a discovery. 157 * <p>For privacy, Android is not discoverable by default. 158 * <p>The sender of this Intent can optionally use extra field {@link 159 * #EXTRA_DISCOVERABLE_DURATION} to request the duration of 160 * discoverability. Currently the default duration is 120 seconds, and 161 * maximum duration is capped at 300 seconds for each request. 162 * <p>Notification of the result of this activity is posted using the 163 * {@link android.app.Activity#onActivityResult} callback. The 164 * <code>resultCode</code> 165 * will be the duration (in seconds) of discoverability or 166 * {@link android.app.Activity#RESULT_CANCELED} if the user rejected 167 * discoverability or an error has occurred. 168 * <p>Applications can also listen for {@link #ACTION_SCAN_MODE_CHANGED} 169 * for global notification whenever the scan mode changes. For example, an 170 * application can be notified when the device has ended discoverability. 171 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 172 */ 173 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 174 public static final String ACTION_REQUEST_DISCOVERABLE = 175 "android.bluetooth.adapter.action.REQUEST_DISCOVERABLE"; 176 177 /** 178 * Used as an optional int extra field in {@link 179 * #ACTION_REQUEST_DISCOVERABLE} intents to request a specific duration 180 * for discoverability in seconds. The current default is 120 seconds, and 181 * requests over 300 seconds will be capped. These values could change. 182 */ 183 public static final String EXTRA_DISCOVERABLE_DURATION = 184 "android.bluetooth.adapter.extra.DISCOVERABLE_DURATION"; 185 186 /** 187 * Activity Action: Show a system activity that allows the user to turn on 188 * Bluetooth. 189 * <p>This system activity will return once Bluetooth has completed turning 190 * on, or the user has decided not to turn Bluetooth on. 191 * <p>Notification of the result of this activity is posted using the 192 * {@link android.app.Activity#onActivityResult} callback. The 193 * <code>resultCode</code> 194 * will be {@link android.app.Activity#RESULT_OK} if Bluetooth has been 195 * turned on or {@link android.app.Activity#RESULT_CANCELED} if the user 196 * has rejected the request or an error has occurred. 197 * <p>Applications can also listen for {@link #ACTION_STATE_CHANGED} 198 * for global notification whenever Bluetooth is turned on or off. 199 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 200 */ 201 @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) 202 public static final String ACTION_REQUEST_ENABLE = 203 "android.bluetooth.adapter.action.REQUEST_ENABLE"; 204 205 /** 206 * Broadcast Action: Indicates the Bluetooth scan mode of the local Adapter 207 * has changed. 208 * <p>Always contains the extra fields {@link #EXTRA_SCAN_MODE} and {@link 209 * #EXTRA_PREVIOUS_SCAN_MODE} containing the new and old scan modes 210 * respectively. 211 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 212 */ 213 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 214 public static final String ACTION_SCAN_MODE_CHANGED = 215 "android.bluetooth.adapter.action.SCAN_MODE_CHANGED"; 216 217 /** 218 * Broadcast Action: Indicate BLE Advertising is started. 219 * @hide 220 */ 221 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 222 public static final String ACTION_BLUETOOTH_ADVERTISING_STARTED = 223 "android.bluetooth.adapter.action.ADVERTISING_STARTED"; 224 225 /** 226 * Broadcast Action: Indicated BLE Advertising is stopped. 227 * @hide 228 */ 229 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 230 public static final String ACTION_BLUETOOTH_ADVERTISING_STOPPED = 231 "android.bluetooth.adapter.action.ADVERTISING_STOPPED"; 232 233 /** 234 * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED} 235 * intents to request the current scan mode. Possible values are: 236 * {@link #SCAN_MODE_NONE}, 237 * {@link #SCAN_MODE_CONNECTABLE}, 238 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}, 239 */ 240 public static final String EXTRA_SCAN_MODE = "android.bluetooth.adapter.extra.SCAN_MODE"; 241 /** 242 * Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED} 243 * intents to request the previous scan mode. Possible values are: 244 * {@link #SCAN_MODE_NONE}, 245 * {@link #SCAN_MODE_CONNECTABLE}, 246 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}, 247 */ 248 public static final String EXTRA_PREVIOUS_SCAN_MODE = 249 "android.bluetooth.adapter.extra.PREVIOUS_SCAN_MODE"; 250 251 /** 252 * Indicates that both inquiry scan and page scan are disabled on the local 253 * Bluetooth adapter. Therefore this device is neither discoverable 254 * nor connectable from remote Bluetooth devices. 255 */ 256 public static final int SCAN_MODE_NONE = 20; 257 /** 258 * Indicates that inquiry scan is disabled, but page scan is enabled on the 259 * local Bluetooth adapter. Therefore this device is not discoverable from 260 * remote Bluetooth devices, but is connectable from remote devices that 261 * have previously discovered this device. 262 */ 263 public static final int SCAN_MODE_CONNECTABLE = 21; 264 /** 265 * Indicates that both inquiry scan and page scan are enabled on the local 266 * Bluetooth adapter. Therefore this device is both discoverable and 267 * connectable from remote Bluetooth devices. 268 */ 269 public static final int SCAN_MODE_CONNECTABLE_DISCOVERABLE = 23; 270 271 /** 272 * Broadcast Action: The local Bluetooth adapter has started the remote 273 * device discovery process. 274 * <p>This usually involves an inquiry scan of about 12 seconds, followed 275 * by a page scan of each new device to retrieve its Bluetooth name. 276 * <p>Register for {@link BluetoothDevice#ACTION_FOUND} to be notified as 277 * remote Bluetooth devices are found. 278 * <p>Device discovery is a heavyweight procedure. New connections to 279 * remote Bluetooth devices should not be attempted while discovery is in 280 * progress, and existing connections will experience limited bandwidth 281 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 282 * discovery. 283 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 284 */ 285 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 286 public static final String ACTION_DISCOVERY_STARTED = 287 "android.bluetooth.adapter.action.DISCOVERY_STARTED"; 288 /** 289 * Broadcast Action: The local Bluetooth adapter has finished the device 290 * discovery process. 291 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 292 */ 293 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 294 public static final String ACTION_DISCOVERY_FINISHED = 295 "android.bluetooth.adapter.action.DISCOVERY_FINISHED"; 296 297 /** 298 * Broadcast Action: The local Bluetooth adapter has changed its friendly 299 * Bluetooth name. 300 * <p>This name is visible to remote Bluetooth devices. 301 * <p>Always contains the extra field {@link #EXTRA_LOCAL_NAME} containing 302 * the name. 303 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 304 */ 305 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 306 public static final String ACTION_LOCAL_NAME_CHANGED = 307 "android.bluetooth.adapter.action.LOCAL_NAME_CHANGED"; 308 /** 309 * Used as a String extra field in {@link #ACTION_LOCAL_NAME_CHANGED} 310 * intents to request the local Bluetooth name. 311 */ 312 public static final String EXTRA_LOCAL_NAME = "android.bluetooth.adapter.extra.LOCAL_NAME"; 313 314 /** 315 * Intent used to broadcast the change in connection state of the local 316 * Bluetooth adapter to a profile of the remote device. When the adapter is 317 * not connected to any profiles of any remote devices and it attempts a 318 * connection to a profile this intent will sent. Once connected, this intent 319 * will not be sent for any more connection attempts to any profiles of any 320 * remote device. When the adapter disconnects from the last profile its 321 * connected to of any remote device, this intent will be sent. 322 * 323 * <p> This intent is useful for applications that are only concerned about 324 * whether the local adapter is connected to any profile of any device and 325 * are not really concerned about which profile. For example, an application 326 * which displays an icon to display whether Bluetooth is connected or not 327 * can use this intent. 328 * 329 * <p>This intent will have 3 extras: 330 * {@link #EXTRA_CONNECTION_STATE} - The current connection state. 331 * {@link #EXTRA_PREVIOUS_CONNECTION_STATE}- The previous connection state. 332 * {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. 333 * 334 * {@link #EXTRA_CONNECTION_STATE} or {@link #EXTRA_PREVIOUS_CONNECTION_STATE} 335 * can be any of {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, 336 * {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}. 337 * 338 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive. 339 */ 340 @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) 341 public static final String ACTION_CONNECTION_STATE_CHANGED = 342 "android.bluetooth.adapter.action.CONNECTION_STATE_CHANGED"; 343 344 /** 345 * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED} 346 * 347 * This extra represents the current connection state. 348 */ 349 public static final String EXTRA_CONNECTION_STATE = 350 "android.bluetooth.adapter.extra.CONNECTION_STATE"; 351 352 /** 353 * Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED} 354 * 355 * This extra represents the previous connection state. 356 */ 357 public static final String EXTRA_PREVIOUS_CONNECTION_STATE = 358 "android.bluetooth.adapter.extra.PREVIOUS_CONNECTION_STATE"; 359 360 /** The profile is in disconnected state */ 361 public static final int STATE_DISCONNECTED = 0; 362 /** The profile is in connecting state */ 363 public static final int STATE_CONNECTING = 1; 364 /** The profile is in connected state */ 365 public static final int STATE_CONNECTED = 2; 366 /** The profile is in disconnecting state */ 367 public static final int STATE_DISCONNECTING = 3; 368 369 /** States for Bluetooth LE advertising */ 370 /** @hide */ 371 public static final int STATE_ADVERTISE_STARTING = 0; 372 /** @hide */ 373 public static final int STATE_ADVERTISE_STARTED = 1; 374 /** @hide */ 375 public static final int STATE_ADVERTISE_STOPPING = 2; 376 /** @hide */ 377 public static final int STATE_ADVERTISE_STOPPED = 3; 378 /** 379 * Force stopping advertising without callback in case the advertising app dies. 380 * @hide 381 */ 382 public static final int STATE_ADVERTISE_FORCE_STOPPING = 4; 383 384 /** @hide */ 385 public static final String BLUETOOTH_MANAGER_SERVICE = "bluetooth_manager"; 386 387 /** @hide */ 388 public static final int ADVERTISE_CALLBACK_SUCCESS = 0; 389 390 private static final int ADDRESS_LENGTH = 17; 391 392 /** 393 * Lazily initialized singleton. Guaranteed final after first object 394 * constructed. 395 */ 396 private static BluetoothAdapter sAdapter; 397 398 private final IBluetoothManager mManagerService; 399 private IBluetooth mService; 400 401 private final Map<LeScanCallback, GattCallbackWrapper> mLeScanClients; 402 private BluetoothAdvScanData mBluetoothAdvScanData = null; 403 private GattCallbackWrapper mAdvertisingGattCallback; 404 private final Handler mHandler; // Handler to post the advertise callback to run on main thread. 405 private final Object mLock = new Object(); 406 407 /** 408 * Get a handle to the default local Bluetooth adapter. 409 * <p>Currently Android only supports one Bluetooth adapter, but the API 410 * could be extended to support more. This will always return the default 411 * adapter. 412 * @return the default local adapter, or null if Bluetooth is not supported 413 * on this hardware platform 414 */ 415 public static synchronized BluetoothAdapter getDefaultAdapter() { 416 if (sAdapter == null) { 417 IBinder b = ServiceManager.getService(BLUETOOTH_MANAGER_SERVICE); 418 if (b != null) { 419 IBluetoothManager managerService = IBluetoothManager.Stub.asInterface(b); 420 sAdapter = new BluetoothAdapter(managerService); 421 } else { 422 Log.e(TAG, "Bluetooth binder is null"); 423 } 424 } 425 return sAdapter; 426 } 427 428 /** 429 * Use {@link #getDefaultAdapter} to get the BluetoothAdapter instance. 430 */ 431 BluetoothAdapter(IBluetoothManager managerService) { 432 433 if (managerService == null) { 434 throw new IllegalArgumentException("bluetooth manager service is null"); 435 } 436 try { 437 mService = managerService.registerAdapter(mManagerCallback); 438 } catch (RemoteException e) {Log.e(TAG, "", e);} 439 mManagerService = managerService; 440 mLeScanClients = new HashMap<LeScanCallback, GattCallbackWrapper>(); 441 mHandler = new Handler(Looper.getMainLooper()); 442 } 443 444 /** 445 * Get a {@link BluetoothDevice} object for the given Bluetooth hardware 446 * address. 447 * <p>Valid Bluetooth hardware addresses must be upper case, in a format 448 * such as "00:11:22:33:AA:BB". The helper {@link #checkBluetoothAddress} is 449 * available to validate a Bluetooth address. 450 * <p>A {@link BluetoothDevice} will always be returned for a valid 451 * hardware address, even if this adapter has never seen that device. 452 * 453 * @param address valid Bluetooth MAC address 454 * @throws IllegalArgumentException if address is invalid 455 */ 456 public BluetoothDevice getRemoteDevice(String address) { 457 return new BluetoothDevice(address); 458 } 459 460 /** 461 * Get a {@link BluetoothDevice} object for the given Bluetooth hardware 462 * address. 463 * <p>Valid Bluetooth hardware addresses must be 6 bytes. This method 464 * expects the address in network byte order (MSB first). 465 * <p>A {@link BluetoothDevice} will always be returned for a valid 466 * hardware address, even if this adapter has never seen that device. 467 * 468 * @param address Bluetooth MAC address (6 bytes) 469 * @throws IllegalArgumentException if address is invalid 470 */ 471 public BluetoothDevice getRemoteDevice(byte[] address) { 472 if (address == null || address.length != 6) { 473 throw new IllegalArgumentException("Bluetooth address must have 6 bytes"); 474 } 475 return new BluetoothDevice(String.format(Locale.US, "%02X:%02X:%02X:%02X:%02X:%02X", 476 address[0], address[1], address[2], address[3], address[4], address[5])); 477 } 478 479 /** 480 * Returns a {@link BluetoothAdvScanData} object representing advertising data. 481 * Data will be reset when bluetooth service is turned off. 482 * @hide 483 */ 484 public BluetoothAdvScanData getAdvScanData() { 485 try { 486 IBluetoothGatt iGatt = mManagerService.getBluetoothGatt(); 487 if (iGatt == null) { 488 // BLE is not supported 489 Log.e(TAG, "failed to start, iGatt null"); 490 return null; 491 } 492 if (mBluetoothAdvScanData == null) { 493 mBluetoothAdvScanData = new BluetoothAdvScanData(iGatt, BluetoothAdvScanData.AD); 494 } 495 return mBluetoothAdvScanData; 496 } catch (RemoteException e) { 497 Log.e(TAG, "failed to get advScanData, error: " + e); 498 return null; 499 } 500 } 501 502 /** 503 * Returns a {@link BluetoothLeAdvertiser} object for Bluetooth LE Advertising operations. 504 */ 505 public BluetoothLeAdvertiser getBluetoothLeAdvertiser() { 506 // TODO: Return null if this feature is not supported by hardware. 507 try { 508 IBluetoothGatt iGatt = mManagerService.getBluetoothGatt(); 509 return new BluetoothLeAdvertiser(iGatt); 510 } catch (RemoteException e) { 511 Log.e(TAG, "failed to get BluetoothLeAdvertiser, error: " + e); 512 return null; 513 } 514 } 515 516 /** 517 * Returns a {@link BluetoothLeScanner} object for Bluetooth LE scan operations. 518 */ 519 public BluetoothLeScanner getBluetoothLeScanner() { 520 // TODO: Return null if BLE scan is not supported by hardware. 521 try { 522 IBluetoothGatt iGatt = mManagerService.getBluetoothGatt(); 523 return new BluetoothLeScanner(iGatt); 524 } catch (RemoteException e) { 525 Log.e(TAG, "failed to get BluetoothLeScanner, error: " + e); 526 return null; 527 } 528 } 529 530 /** 531 * Interface for BLE advertising callback. 532 * 533 * @hide 534 */ 535 public interface AdvertiseCallback { 536 /** 537 * Callback when advertise starts. 538 * @param status - {@link #ADVERTISE_CALLBACK_SUCCESS} for success, others for failure. 539 */ 540 void onAdvertiseStart(int status); 541 /** 542 * Callback when advertise stops. 543 * @param status - {@link #ADVERTISE_CALLBACK_SUCCESS} for success, others for failure. 544 */ 545 void onAdvertiseStop(int status); 546 } 547 548 /** 549 * Start BLE advertising using current {@link BluetoothAdvScanData}. 550 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_PRIVILEGED} 551 * 552 * @param callback - {@link AdvertiseCallback} 553 * @return true if BLE advertising succeeds, false otherwise. 554 * @hide 555 */ 556 public boolean startAdvertising(final AdvertiseCallback callback) { 557 if (getState() != STATE_ON) return false; 558 try { 559 IBluetoothGatt iGatt = mManagerService.getBluetoothGatt(); 560 if (iGatt == null) { 561 // BLE is not supported. 562 return false; 563 } 564 // Restart/reset advertising packets if advertising is in progress. 565 if (isAdvertising()) { 566 // Invalid advertising callback. 567 if (mAdvertisingGattCallback == null || mAdvertisingGattCallback.mLeHandle == -1) { 568 Log.e(TAG, "failed to restart advertising, invalid callback"); 569 return false; 570 } 571 iGatt.startAdvertising(mAdvertisingGattCallback.mLeHandle); 572 // Run the callback from main thread. 573 mHandler.post(new Runnable() { 574 @Override 575 public void run() { 576 // callback with status success. 577 callback.onAdvertiseStart(ADVERTISE_CALLBACK_SUCCESS); 578 } 579 }); 580 return true; 581 } 582 UUID uuid = UUID.randomUUID(); 583 GattCallbackWrapper wrapper = 584 new GattCallbackWrapper(this, null, null, callback); 585 iGatt.registerClient(new ParcelUuid(uuid), wrapper); 586 if (!wrapper.advertiseStarted()) { 587 return false; 588 } 589 synchronized (mLock) { 590 mAdvertisingGattCallback = wrapper; 591 } 592 return true; 593 } catch (RemoteException e) { 594 Log.e(TAG, "", e); 595 return false; 596 } 597 } 598 599 /** 600 * Stop BLE advertising. The callback has to be the same one used for start advertising. 601 * 602 * @param callback - {@link AdvertiseCallback} 603 * @return true if BLE advertising stops, false otherwise. 604 * @hide 605 */ 606 public boolean stopAdvertising(AdvertiseCallback callback) { 607 try { 608 IBluetoothGatt iGatt = mManagerService.getBluetoothGatt(); 609 if (iGatt == null) { 610 // BLE is not supported 611 return false; 612 } 613 if (mAdvertisingGattCallback == null) { 614 // no callback. 615 return false; 616 } 617 // Make sure same callback is used for start and stop advertising. 618 if (callback != mAdvertisingGattCallback.mAdvertiseCallback) { 619 Log.e(TAG, "must use the same callback for star/stop advertising"); 620 return false; 621 } 622 mAdvertisingGattCallback.stopAdvertising(); 623 return true; 624 } catch (RemoteException e) { 625 Log.e(TAG, "", e); 626 return false; 627 } 628 } 629 630 /** 631 * Return true if Bluetooth is currently enabled and ready for use. 632 * <p>Equivalent to: 633 * <code>getBluetoothState() == STATE_ON</code> 634 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 635 * 636 * @return true if the local adapter is turned on 637 */ 638 public boolean isEnabled() { 639 640 try { 641 synchronized(mManagerCallback) { 642 if (mService != null) return mService.isEnabled(); 643 } 644 } catch (RemoteException e) {Log.e(TAG, "", e);} 645 return false; 646 } 647 648 /** 649 * Get the current state of the local Bluetooth adapter. 650 * <p>Possible return values are 651 * {@link #STATE_OFF}, 652 * {@link #STATE_TURNING_ON}, 653 * {@link #STATE_ON}, 654 * {@link #STATE_TURNING_OFF}. 655 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 656 * 657 * @return current state of Bluetooth adapter 658 */ 659 public int getState() { 660 try { 661 synchronized(mManagerCallback) { 662 if (mService != null) 663 { 664 int state= mService.getState(); 665 if (VDBG) Log.d(TAG, "" + hashCode() + ": getState(). Returning " + state); 666 return state; 667 } 668 // TODO(BT) there might be a small gap during STATE_TURNING_ON that 669 // mService is null, handle that case 670 } 671 } catch (RemoteException e) {Log.e(TAG, "", e);} 672 if (DBG) Log.d(TAG, "" + hashCode() + ": getState() : mService = null. Returning STATE_OFF"); 673 return STATE_OFF; 674 } 675 676 /** 677 * Turn on the local Bluetooth adapter—do not use without explicit 678 * user action to turn on Bluetooth. 679 * <p>This powers on the underlying Bluetooth hardware, and starts all 680 * Bluetooth system services. 681 * <p class="caution"><strong>Bluetooth should never be enabled without 682 * direct user consent</strong>. If you want to turn on Bluetooth in order 683 * to create a wireless connection, you should use the {@link 684 * #ACTION_REQUEST_ENABLE} Intent, which will raise a dialog that requests 685 * user permission to turn on Bluetooth. The {@link #enable()} method is 686 * provided only for applications that include a user interface for changing 687 * system settings, such as a "power manager" app.</p> 688 * <p>This is an asynchronous call: it will return immediately, and 689 * clients should listen for {@link #ACTION_STATE_CHANGED} 690 * to be notified of subsequent adapter state changes. If this call returns 691 * true, then the adapter state will immediately transition from {@link 692 * #STATE_OFF} to {@link #STATE_TURNING_ON}, and some time 693 * later transition to either {@link #STATE_OFF} or {@link 694 * #STATE_ON}. If this call returns false then there was an 695 * immediate problem that will prevent the adapter from being turned on - 696 * such as Airplane mode, or the adapter is already turned on. 697 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 698 * permission 699 * 700 * @return true to indicate adapter startup has begun, or false on 701 * immediate error 702 */ 703 public boolean enable() { 704 if (isEnabled() == true){ 705 if (DBG) Log.d(TAG, "enable(): BT is already enabled..!"); 706 return true; 707 } 708 try { 709 return mManagerService.enable(); 710 } catch (RemoteException e) {Log.e(TAG, "", e);} 711 return false; 712 } 713 714 /** 715 * Turn off the local Bluetooth adapter—do not use without explicit 716 * user action to turn off Bluetooth. 717 * <p>This gracefully shuts down all Bluetooth connections, stops Bluetooth 718 * system services, and powers down the underlying Bluetooth hardware. 719 * <p class="caution"><strong>Bluetooth should never be disabled without 720 * direct user consent</strong>. The {@link #disable()} method is 721 * provided only for applications that include a user interface for changing 722 * system settings, such as a "power manager" app.</p> 723 * <p>This is an asynchronous call: it will return immediately, and 724 * clients should listen for {@link #ACTION_STATE_CHANGED} 725 * to be notified of subsequent adapter state changes. If this call returns 726 * true, then the adapter state will immediately transition from {@link 727 * #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time 728 * later transition to either {@link #STATE_OFF} or {@link 729 * #STATE_ON}. If this call returns false then there was an 730 * immediate problem that will prevent the adapter from being turned off - 731 * such as the adapter already being turned off. 732 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 733 * permission 734 * 735 * @return true to indicate adapter shutdown has begun, or false on 736 * immediate error 737 */ 738 public boolean disable() { 739 try { 740 return mManagerService.disable(true); 741 } catch (RemoteException e) {Log.e(TAG, "", e);} 742 return false; 743 } 744 745 /** 746 * Turn off the local Bluetooth adapter and don't persist the setting. 747 * 748 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 749 * permission 750 * 751 * @return true to indicate adapter shutdown has begun, or false on 752 * immediate error 753 * @hide 754 */ 755 public boolean disable(boolean persist) { 756 757 try { 758 return mManagerService.disable(persist); 759 } catch (RemoteException e) {Log.e(TAG, "", e);} 760 return false; 761 } 762 763 /** 764 * Returns the hardware address of the local Bluetooth adapter. 765 * <p>For example, "00:11:22:AA:BB:CC". 766 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 767 * 768 * @return Bluetooth hardware address as string 769 */ 770 public String getAddress() { 771 try { 772 return mManagerService.getAddress(); 773 } catch (RemoteException e) {Log.e(TAG, "", e);} 774 return null; 775 } 776 777 /** 778 * Get the friendly Bluetooth name of the local Bluetooth adapter. 779 * <p>This name is visible to remote Bluetooth devices. 780 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 781 * 782 * @return the Bluetooth name, or null on error 783 */ 784 public String getName() { 785 try { 786 return mManagerService.getName(); 787 } catch (RemoteException e) {Log.e(TAG, "", e);} 788 return null; 789 } 790 791 /** 792 * enable or disable Bluetooth HCI snoop log. 793 * 794 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN} 795 * permission 796 * 797 * @return true to indicate configure HCI log successfully, or false on 798 * immediate error 799 * @hide 800 */ 801 public boolean configHciSnoopLog(boolean enable) { 802 try { 803 synchronized(mManagerCallback) { 804 if (mService != null) return mService.configHciSnoopLog(enable); 805 } 806 } catch (RemoteException e) {Log.e(TAG, "", e);} 807 return false; 808 } 809 810 /** 811 * Get the UUIDs supported by the local Bluetooth adapter. 812 * 813 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 814 * 815 * @return the UUIDs supported by the local Bluetooth Adapter. 816 * @hide 817 */ 818 public ParcelUuid[] getUuids() { 819 if (getState() != STATE_ON) return null; 820 try { 821 synchronized(mManagerCallback) { 822 if (mService != null) return mService.getUuids(); 823 } 824 } catch (RemoteException e) {Log.e(TAG, "", e);} 825 return null; 826 } 827 828 /** 829 * Set the friendly Bluetooth name of the local Bluetooth adapter. 830 * <p>This name is visible to remote Bluetooth devices. 831 * <p>Valid Bluetooth names are a maximum of 248 bytes using UTF-8 832 * encoding, although many remote devices can only display the first 833 * 40 characters, and some may be limited to just 20. 834 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 835 * will return false. After turning on Bluetooth, 836 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 837 * to get the updated value. 838 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} 839 * 840 * @param name a valid Bluetooth name 841 * @return true if the name was set, false otherwise 842 */ 843 public boolean setName(String name) { 844 if (getState() != STATE_ON) return false; 845 try { 846 synchronized(mManagerCallback) { 847 if (mService != null) return mService.setName(name); 848 } 849 } catch (RemoteException e) {Log.e(TAG, "", e);} 850 return false; 851 } 852 853 /** 854 * Get the current Bluetooth scan mode of the local Bluetooth adapter. 855 * <p>The Bluetooth scan mode determines if the local adapter is 856 * connectable and/or discoverable from remote Bluetooth devices. 857 * <p>Possible values are: 858 * {@link #SCAN_MODE_NONE}, 859 * {@link #SCAN_MODE_CONNECTABLE}, 860 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. 861 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 862 * will return {@link #SCAN_MODE_NONE}. After turning on Bluetooth, 863 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 864 * to get the updated value. 865 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 866 * 867 * @return scan mode 868 */ 869 public int getScanMode() { 870 if (getState() != STATE_ON) return SCAN_MODE_NONE; 871 try { 872 synchronized(mManagerCallback) { 873 if (mService != null) return mService.getScanMode(); 874 } 875 } catch (RemoteException e) {Log.e(TAG, "", e);} 876 return SCAN_MODE_NONE; 877 } 878 879 /** 880 * Set the Bluetooth scan mode of the local Bluetooth adapter. 881 * <p>The Bluetooth scan mode determines if the local adapter is 882 * connectable and/or discoverable from remote Bluetooth devices. 883 * <p>For privacy reasons, discoverable mode is automatically turned off 884 * after <code>duration</code> seconds. For example, 120 seconds should be 885 * enough for a remote device to initiate and complete its discovery 886 * process. 887 * <p>Valid scan mode values are: 888 * {@link #SCAN_MODE_NONE}, 889 * {@link #SCAN_MODE_CONNECTABLE}, 890 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. 891 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 892 * will return false. After turning on Bluetooth, 893 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 894 * to get the updated value. 895 * <p>Requires {@link android.Manifest.permission#WRITE_SECURE_SETTINGS} 896 * <p>Applications cannot set the scan mode. They should use 897 * <code>startActivityForResult( 898 * BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE}) 899 * </code>instead. 900 * 901 * @param mode valid scan mode 902 * @param duration time in seconds to apply scan mode, only used for 903 * {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE} 904 * @return true if the scan mode was set, false otherwise 905 * @hide 906 */ 907 public boolean setScanMode(int mode, int duration) { 908 if (getState() != STATE_ON) return false; 909 try { 910 synchronized(mManagerCallback) { 911 if (mService != null) return mService.setScanMode(mode, duration); 912 } 913 } catch (RemoteException e) {Log.e(TAG, "", e);} 914 return false; 915 } 916 917 /** @hide */ 918 public boolean setScanMode(int mode) { 919 if (getState() != STATE_ON) return false; 920 /* getDiscoverableTimeout() to use the latest from NV than use 0 */ 921 return setScanMode(mode, getDiscoverableTimeout()); 922 } 923 924 /** @hide */ 925 public int getDiscoverableTimeout() { 926 if (getState() != STATE_ON) return -1; 927 try { 928 synchronized(mManagerCallback) { 929 if (mService != null) return mService.getDiscoverableTimeout(); 930 } 931 } catch (RemoteException e) {Log.e(TAG, "", e);} 932 return -1; 933 } 934 935 /** @hide */ 936 public void setDiscoverableTimeout(int timeout) { 937 if (getState() != STATE_ON) return; 938 try { 939 synchronized(mManagerCallback) { 940 if (mService != null) mService.setDiscoverableTimeout(timeout); 941 } 942 } catch (RemoteException e) {Log.e(TAG, "", e);} 943 } 944 945 /** 946 * Start the remote device discovery process. 947 * <p>The discovery process usually involves an inquiry scan of about 12 948 * seconds, followed by a page scan of each new device to retrieve its 949 * Bluetooth name. 950 * <p>This is an asynchronous call, it will return immediately. Register 951 * for {@link #ACTION_DISCOVERY_STARTED} and {@link 952 * #ACTION_DISCOVERY_FINISHED} intents to determine exactly when the 953 * discovery starts and completes. Register for {@link 954 * BluetoothDevice#ACTION_FOUND} to be notified as remote Bluetooth devices 955 * are found. 956 * <p>Device discovery is a heavyweight procedure. New connections to 957 * remote Bluetooth devices should not be attempted while discovery is in 958 * progress, and existing connections will experience limited bandwidth 959 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 960 * discovery. Discovery is not managed by the Activity, 961 * but is run as a system service, so an application should always call 962 * {@link BluetoothAdapter#cancelDiscovery()} even if it 963 * did not directly request a discovery, just to be sure. 964 * <p>Device discovery will only find remote devices that are currently 965 * <i>discoverable</i> (inquiry scan enabled). Many Bluetooth devices are 966 * not discoverable by default, and need to be entered into a special mode. 967 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 968 * will return false. After turning on Bluetooth, 969 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 970 * to get the updated value. 971 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. 972 * 973 * @return true on success, false on error 974 */ 975 public boolean startDiscovery() { 976 if (getState() != STATE_ON) return false; 977 try { 978 synchronized(mManagerCallback) { 979 if (mService != null) return mService.startDiscovery(); 980 } 981 } catch (RemoteException e) {Log.e(TAG, "", e);} 982 return false; 983 } 984 985 /** 986 * Cancel the current device discovery process. 987 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. 988 * <p>Because discovery is a heavyweight procedure for the Bluetooth 989 * adapter, this method should always be called before attempting to connect 990 * to a remote device with {@link 991 * android.bluetooth.BluetoothSocket#connect()}. Discovery is not managed by 992 * the Activity, but is run as a system service, so an application should 993 * always call cancel discovery even if it did not directly request a 994 * discovery, just to be sure. 995 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 996 * will return false. After turning on Bluetooth, 997 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 998 * to get the updated value. 999 * 1000 * @return true on success, false on error 1001 */ 1002 public boolean cancelDiscovery() { 1003 if (getState() != STATE_ON) return false; 1004 try { 1005 synchronized(mManagerCallback) { 1006 if (mService != null) return mService.cancelDiscovery(); 1007 } 1008 } catch (RemoteException e) {Log.e(TAG, "", e);} 1009 return false; 1010 } 1011 1012 /** 1013 * Return true if the local Bluetooth adapter is currently in the device 1014 * discovery process. 1015 * <p>Device discovery is a heavyweight procedure. New connections to 1016 * remote Bluetooth devices should not be attempted while discovery is in 1017 * progress, and existing connections will experience limited bandwidth 1018 * and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing 1019 * discovery. 1020 * <p>Applications can also register for {@link #ACTION_DISCOVERY_STARTED} 1021 * or {@link #ACTION_DISCOVERY_FINISHED} to be notified when discovery 1022 * starts or completes. 1023 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 1024 * will return false. After turning on Bluetooth, 1025 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 1026 * to get the updated value. 1027 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 1028 * 1029 * @return true if discovering 1030 */ 1031 public boolean isDiscovering() { 1032 if (getState() != STATE_ON) return false; 1033 try { 1034 synchronized(mManagerCallback) { 1035 if (mService != null ) return mService.isDiscovering(); 1036 } 1037 } catch (RemoteException e) {Log.e(TAG, "", e);} 1038 return false; 1039 } 1040 1041 /** 1042 * Returns whether BLE is currently advertising. 1043 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_PRIVILEGED}. 1044 * 1045 * @hide 1046 */ 1047 public boolean isAdvertising() { 1048 if (getState() != STATE_ON) return false; 1049 try { 1050 IBluetoothGatt iGatt = mManagerService.getBluetoothGatt(); 1051 return iGatt.isAdvertising(); 1052 } catch (RemoteException e) { 1053 Log.e(TAG, "", e); 1054 } 1055 return false; 1056 } 1057 1058 /** 1059 * Return the set of {@link BluetoothDevice} objects that are bonded 1060 * (paired) to the local adapter. 1061 * <p>If Bluetooth state is not {@link #STATE_ON}, this API 1062 * will return an empty set. After turning on Bluetooth, 1063 * wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON} 1064 * to get the updated value. 1065 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 1066 * 1067 * @return unmodifiable set of {@link BluetoothDevice}, or null on error 1068 */ 1069 public Set<BluetoothDevice> getBondedDevices() { 1070 if (getState() != STATE_ON) { 1071 return toDeviceSet(new BluetoothDevice[0]); 1072 } 1073 try { 1074 synchronized(mManagerCallback) { 1075 if (mService != null) return toDeviceSet(mService.getBondedDevices()); 1076 } 1077 return toDeviceSet(new BluetoothDevice[0]); 1078 } catch (RemoteException e) {Log.e(TAG, "", e);} 1079 return null; 1080 } 1081 1082 /** 1083 * Get the current connection state of the local Bluetooth adapter. 1084 * This can be used to check whether the local Bluetooth adapter is connected 1085 * to any profile of any other remote Bluetooth Device. 1086 * 1087 * <p> Use this function along with {@link #ACTION_CONNECTION_STATE_CHANGED} 1088 * intent to get the connection state of the adapter. 1089 * 1090 * @return One of {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTED}, 1091 * {@link #STATE_CONNECTING} or {@link #STATE_DISCONNECTED} 1092 * 1093 * @hide 1094 */ 1095 public int getConnectionState() { 1096 if (getState() != STATE_ON) return BluetoothAdapter.STATE_DISCONNECTED; 1097 try { 1098 synchronized(mManagerCallback) { 1099 if (mService != null) return mService.getAdapterConnectionState(); 1100 } 1101 } catch (RemoteException e) {Log.e(TAG, "getConnectionState:", e);} 1102 return BluetoothAdapter.STATE_DISCONNECTED; 1103 } 1104 1105 /** 1106 * Get the current connection state of a profile. 1107 * This function can be used to check whether the local Bluetooth adapter 1108 * is connected to any remote device for a specific profile. 1109 * Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET}, 1110 * {@link BluetoothProfile#A2DP}. 1111 * 1112 * <p>Requires {@link android.Manifest.permission#BLUETOOTH}. 1113 * 1114 * <p> Return value can be one of 1115 * {@link BluetoothProfile#STATE_DISCONNECTED}, 1116 * {@link BluetoothProfile#STATE_CONNECTING}, 1117 * {@link BluetoothProfile#STATE_CONNECTED}, 1118 * {@link BluetoothProfile#STATE_DISCONNECTING} 1119 */ 1120 public int getProfileConnectionState(int profile) { 1121 if (getState() != STATE_ON) return BluetoothProfile.STATE_DISCONNECTED; 1122 try { 1123 synchronized(mManagerCallback) { 1124 if (mService != null) return mService.getProfileConnectionState(profile); 1125 } 1126 } catch (RemoteException e) { 1127 Log.e(TAG, "getProfileConnectionState:", e); 1128 } 1129 return BluetoothProfile.STATE_DISCONNECTED; 1130 } 1131 1132 /** 1133 * Create a listening, secure RFCOMM Bluetooth socket. 1134 * <p>A remote device connecting to this socket will be authenticated and 1135 * communication on this socket will be encrypted. 1136 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 1137 * connections from a listening {@link BluetoothServerSocket}. 1138 * <p>Valid RFCOMM channels are in range 1 to 30. 1139 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} 1140 * @param channel RFCOMM channel to listen on 1141 * @return a listening RFCOMM BluetoothServerSocket 1142 * @throws IOException on error, for example Bluetooth not available, or 1143 * insufficient permissions, or channel in use. 1144 * @hide 1145 */ 1146 public BluetoothServerSocket listenUsingRfcommOn(int channel) throws IOException { 1147 BluetoothServerSocket socket = new BluetoothServerSocket( 1148 BluetoothSocket.TYPE_RFCOMM, true, true, channel); 1149 int errno = socket.mSocket.bindListen(); 1150 if (errno != 0) { 1151 //TODO(BT): Throw the same exception error code 1152 // that the previous code was using. 1153 //socket.mSocket.throwErrnoNative(errno); 1154 throw new IOException("Error: " + errno); 1155 } 1156 return socket; 1157 } 1158 1159 /** 1160 * Create a listening, secure RFCOMM Bluetooth socket with Service Record. 1161 * <p>A remote device connecting to this socket will be authenticated and 1162 * communication on this socket will be encrypted. 1163 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 1164 * connections from a listening {@link BluetoothServerSocket}. 1165 * <p>The system will assign an unused RFCOMM channel to listen on. 1166 * <p>The system will also register a Service Discovery 1167 * Protocol (SDP) record with the local SDP server containing the specified 1168 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 1169 * can use the same UUID to query our SDP server and discover which channel 1170 * to connect to. This SDP record will be removed when this socket is 1171 * closed, or if this application closes unexpectedly. 1172 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 1173 * connect to this socket from another device using the same {@link UUID}. 1174 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1175 * @param name service name for SDP record 1176 * @param uuid uuid for SDP record 1177 * @return a listening RFCOMM BluetoothServerSocket 1178 * @throws IOException on error, for example Bluetooth not available, or 1179 * insufficient permissions, or channel in use. 1180 */ 1181 public BluetoothServerSocket listenUsingRfcommWithServiceRecord(String name, UUID uuid) 1182 throws IOException { 1183 return createNewRfcommSocketAndRecord(name, uuid, true, true); 1184 } 1185 1186 /** 1187 * Create a listening, insecure RFCOMM Bluetooth socket with Service Record. 1188 * <p>The link key is not required to be authenticated, i.e the communication may be 1189 * vulnerable to Man In the Middle attacks. For Bluetooth 2.1 devices, 1190 * the link will be encrypted, as encryption is mandartory. 1191 * For legacy devices (pre Bluetooth 2.1 devices) the link will not 1192 * be encrypted. Use {@link #listenUsingRfcommWithServiceRecord}, if an 1193 * encrypted and authenticated communication channel is desired. 1194 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 1195 * connections from a listening {@link BluetoothServerSocket}. 1196 * <p>The system will assign an unused RFCOMM channel to listen on. 1197 * <p>The system will also register a Service Discovery 1198 * Protocol (SDP) record with the local SDP server containing the specified 1199 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 1200 * can use the same UUID to query our SDP server and discover which channel 1201 * to connect to. This SDP record will be removed when this socket is 1202 * closed, or if this application closes unexpectedly. 1203 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 1204 * connect to this socket from another device using the same {@link UUID}. 1205 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1206 * @param name service name for SDP record 1207 * @param uuid uuid for SDP record 1208 * @return a listening RFCOMM BluetoothServerSocket 1209 * @throws IOException on error, for example Bluetooth not available, or 1210 * insufficient permissions, or channel in use. 1211 */ 1212 public BluetoothServerSocket listenUsingInsecureRfcommWithServiceRecord(String name, UUID uuid) 1213 throws IOException { 1214 return createNewRfcommSocketAndRecord(name, uuid, false, false); 1215 } 1216 1217 /** 1218 * Create a listening, encrypted, 1219 * RFCOMM Bluetooth socket with Service Record. 1220 * <p>The link will be encrypted, but the link key is not required to be authenticated 1221 * i.e the communication is vulnerable to Man In the Middle attacks. Use 1222 * {@link #listenUsingRfcommWithServiceRecord}, to ensure an authenticated link key. 1223 * <p> Use this socket if authentication of link key is not possible. 1224 * For example, for Bluetooth 2.1 devices, if any of the devices does not have 1225 * an input and output capability or just has the ability to display a numeric key, 1226 * a secure socket connection is not possible and this socket can be used. 1227 * Use {@link #listenUsingInsecureRfcommWithServiceRecord}, if encryption is not required. 1228 * For Bluetooth 2.1 devices, the link will be encrypted, as encryption is mandartory. 1229 * For more details, refer to the Security Model section 5.2 (vol 3) of 1230 * Bluetooth Core Specification version 2.1 + EDR. 1231 * <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming 1232 * connections from a listening {@link BluetoothServerSocket}. 1233 * <p>The system will assign an unused RFCOMM channel to listen on. 1234 * <p>The system will also register a Service Discovery 1235 * Protocol (SDP) record with the local SDP server containing the specified 1236 * UUID, service name, and auto-assigned channel. Remote Bluetooth devices 1237 * can use the same UUID to query our SDP server and discover which channel 1238 * to connect to. This SDP record will be removed when this socket is 1239 * closed, or if this application closes unexpectedly. 1240 * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to 1241 * connect to this socket from another device using the same {@link UUID}. 1242 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1243 * @param name service name for SDP record 1244 * @param uuid uuid for SDP record 1245 * @return a listening RFCOMM BluetoothServerSocket 1246 * @throws IOException on error, for example Bluetooth not available, or 1247 * insufficient permissions, or channel in use. 1248 * @hide 1249 */ 1250 public BluetoothServerSocket listenUsingEncryptedRfcommWithServiceRecord( 1251 String name, UUID uuid) throws IOException { 1252 return createNewRfcommSocketAndRecord(name, uuid, false, true); 1253 } 1254 1255 1256 private BluetoothServerSocket createNewRfcommSocketAndRecord(String name, UUID uuid, 1257 boolean auth, boolean encrypt) throws IOException { 1258 BluetoothServerSocket socket; 1259 socket = new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, auth, 1260 encrypt, new ParcelUuid(uuid)); 1261 socket.setServiceName(name); 1262 int errno = socket.mSocket.bindListen(); 1263 if (errno != 0) { 1264 //TODO(BT): Throw the same exception error code 1265 // that the previous code was using. 1266 //socket.mSocket.throwErrnoNative(errno); 1267 throw new IOException("Error: " + errno); 1268 } 1269 return socket; 1270 } 1271 1272 /** 1273 * Construct an unencrypted, unauthenticated, RFCOMM server socket. 1274 * Call #accept to retrieve connections to this socket. 1275 * @return An RFCOMM BluetoothServerSocket 1276 * @throws IOException On error, for example Bluetooth not available, or 1277 * insufficient permissions. 1278 * @hide 1279 */ 1280 public BluetoothServerSocket listenUsingInsecureRfcommOn(int port) throws IOException { 1281 BluetoothServerSocket socket = new BluetoothServerSocket( 1282 BluetoothSocket.TYPE_RFCOMM, false, false, port); 1283 int errno = socket.mSocket.bindListen(); 1284 if (errno != 0) { 1285 //TODO(BT): Throw the same exception error code 1286 // that the previous code was using. 1287 //socket.mSocket.throwErrnoNative(errno); 1288 throw new IOException("Error: " + errno); 1289 } 1290 return socket; 1291 } 1292 1293 /** 1294 * Construct an encrypted, RFCOMM server socket. 1295 * Call #accept to retrieve connections to this socket. 1296 * @return An RFCOMM BluetoothServerSocket 1297 * @throws IOException On error, for example Bluetooth not available, or 1298 * insufficient permissions. 1299 * @hide 1300 */ 1301 public BluetoothServerSocket listenUsingEncryptedRfcommOn(int port) 1302 throws IOException { 1303 BluetoothServerSocket socket = new BluetoothServerSocket( 1304 BluetoothSocket.TYPE_RFCOMM, false, true, port); 1305 int errno = socket.mSocket.bindListen(); 1306 if (errno < 0) { 1307 //TODO(BT): Throw the same exception error code 1308 // that the previous code was using. 1309 //socket.mSocket.throwErrnoNative(errno); 1310 throw new IOException("Error: " + errno); 1311 } 1312 return socket; 1313 } 1314 1315 /** 1316 * Construct a SCO server socket. 1317 * Call #accept to retrieve connections to this socket. 1318 * @return A SCO BluetoothServerSocket 1319 * @throws IOException On error, for example Bluetooth not available, or 1320 * insufficient permissions. 1321 * @hide 1322 */ 1323 public static BluetoothServerSocket listenUsingScoOn() throws IOException { 1324 BluetoothServerSocket socket = new BluetoothServerSocket( 1325 BluetoothSocket.TYPE_SCO, false, false, -1); 1326 int errno = socket.mSocket.bindListen(); 1327 if (errno < 0) { 1328 //TODO(BT): Throw the same exception error code 1329 // that the previous code was using. 1330 //socket.mSocket.throwErrnoNative(errno); 1331 } 1332 return socket; 1333 } 1334 1335 /** 1336 * Read the local Out of Band Pairing Data 1337 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1338 * 1339 * @return Pair<byte[], byte[]> of Hash and Randomizer 1340 * 1341 * @hide 1342 */ 1343 public Pair<byte[], byte[]> readOutOfBandData() { 1344 if (getState() != STATE_ON) return null; 1345 //TODO(BT 1346 /* 1347 try { 1348 byte[] hash; 1349 byte[] randomizer; 1350 1351 byte[] ret = mService.readOutOfBandData(); 1352 1353 if (ret == null || ret.length != 32) return null; 1354 1355 hash = Arrays.copyOfRange(ret, 0, 16); 1356 randomizer = Arrays.copyOfRange(ret, 16, 32); 1357 1358 if (DBG) { 1359 Log.d(TAG, "readOutOfBandData:" + Arrays.toString(hash) + 1360 ":" + Arrays.toString(randomizer)); 1361 } 1362 return new Pair<byte[], byte[]>(hash, randomizer); 1363 1364 } catch (RemoteException e) {Log.e(TAG, "", e);}*/ 1365 return null; 1366 } 1367 1368 /** 1369 * Get the profile proxy object associated with the profile. 1370 * 1371 * <p>Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET}, 1372 * {@link BluetoothProfile#A2DP}, {@link BluetoothProfile#GATT}, or 1373 * {@link BluetoothProfile#GATT_SERVER}. Clients must implement 1374 * {@link BluetoothProfile.ServiceListener} to get notified of 1375 * the connection status and to get the proxy object. 1376 * 1377 * @param context Context of the application 1378 * @param listener The service Listener for connection callbacks. 1379 * @param profile The Bluetooth profile; either {@link BluetoothProfile#HEALTH}, 1380 * {@link BluetoothProfile#HEADSET} or {@link BluetoothProfile#A2DP}. 1381 * @return true on success, false on error 1382 */ 1383 public boolean getProfileProxy(Context context, BluetoothProfile.ServiceListener listener, 1384 int profile) { 1385 if (context == null || listener == null) return false; 1386 1387 if (profile == BluetoothProfile.HEADSET) { 1388 BluetoothHeadset headset = new BluetoothHeadset(context, listener); 1389 return true; 1390 } else if (profile == BluetoothProfile.A2DP) { 1391 BluetoothA2dp a2dp = new BluetoothA2dp(context, listener); 1392 return true; 1393 } else if (profile == BluetoothProfile.INPUT_DEVICE) { 1394 BluetoothInputDevice iDev = new BluetoothInputDevice(context, listener); 1395 return true; 1396 } else if (profile == BluetoothProfile.PAN) { 1397 BluetoothPan pan = new BluetoothPan(context, listener); 1398 return true; 1399 } else if (profile == BluetoothProfile.HEALTH) { 1400 BluetoothHealth health = new BluetoothHealth(context, listener); 1401 return true; 1402 } else if (profile == BluetoothProfile.MAP) { 1403 BluetoothMap map = new BluetoothMap(context, listener); 1404 return true; 1405 } else { 1406 return false; 1407 } 1408 } 1409 1410 /** 1411 * Close the connection of the profile proxy to the Service. 1412 * 1413 * <p> Clients should call this when they are no longer using 1414 * the proxy obtained from {@link #getProfileProxy}. 1415 * Profile can be one of {@link BluetoothProfile#HEALTH}, {@link BluetoothProfile#HEADSET} or 1416 * {@link BluetoothProfile#A2DP} 1417 * 1418 * @param profile 1419 * @param proxy Profile proxy object 1420 */ 1421 public void closeProfileProxy(int profile, BluetoothProfile proxy) { 1422 if (proxy == null) return; 1423 1424 switch (profile) { 1425 case BluetoothProfile.HEADSET: 1426 BluetoothHeadset headset = (BluetoothHeadset)proxy; 1427 headset.close(); 1428 break; 1429 case BluetoothProfile.A2DP: 1430 BluetoothA2dp a2dp = (BluetoothA2dp)proxy; 1431 a2dp.close(); 1432 break; 1433 case BluetoothProfile.INPUT_DEVICE: 1434 BluetoothInputDevice iDev = (BluetoothInputDevice)proxy; 1435 iDev.close(); 1436 break; 1437 case BluetoothProfile.PAN: 1438 BluetoothPan pan = (BluetoothPan)proxy; 1439 pan.close(); 1440 break; 1441 case BluetoothProfile.HEALTH: 1442 BluetoothHealth health = (BluetoothHealth)proxy; 1443 health.close(); 1444 break; 1445 case BluetoothProfile.GATT: 1446 BluetoothGatt gatt = (BluetoothGatt)proxy; 1447 gatt.close(); 1448 break; 1449 case BluetoothProfile.GATT_SERVER: 1450 BluetoothGattServer gattServer = (BluetoothGattServer)proxy; 1451 gattServer.close(); 1452 break; 1453 case BluetoothProfile.MAP: 1454 BluetoothMap map = (BluetoothMap)proxy; 1455 map.close(); 1456 break; 1457 } 1458 } 1459 1460 final private IBluetoothManagerCallback mManagerCallback = 1461 new IBluetoothManagerCallback.Stub() { 1462 public void onBluetoothServiceUp(IBluetooth bluetoothService) { 1463 if (VDBG) Log.d(TAG, "onBluetoothServiceUp: " + bluetoothService); 1464 synchronized (mManagerCallback) { 1465 mService = bluetoothService; 1466 for (IBluetoothManagerCallback cb : mProxyServiceStateCallbacks ){ 1467 try { 1468 if (cb != null) { 1469 cb.onBluetoothServiceUp(bluetoothService); 1470 } else { 1471 Log.d(TAG, "onBluetoothServiceUp: cb is null!!!"); 1472 } 1473 } catch (Exception e) { Log.e(TAG,"",e);} 1474 } 1475 } 1476 } 1477 1478 public void onBluetoothServiceDown() { 1479 if (VDBG) Log.d(TAG, "onBluetoothServiceDown: " + mService); 1480 synchronized (mManagerCallback) { 1481 mService = null; 1482 // Reset bluetooth adv scan data when Gatt service is down. 1483 mBluetoothAdvScanData = null; 1484 for (IBluetoothManagerCallback cb : mProxyServiceStateCallbacks ){ 1485 try { 1486 if (cb != null) { 1487 cb.onBluetoothServiceDown(); 1488 } else { 1489 Log.d(TAG, "onBluetoothServiceDown: cb is null!!!"); 1490 } 1491 } catch (Exception e) { Log.e(TAG,"",e);} 1492 } 1493 } 1494 } 1495 }; 1496 1497 /** 1498 * Enable the Bluetooth Adapter, but don't auto-connect devices 1499 * and don't persist state. Only for use by system applications. 1500 * @hide 1501 */ 1502 public boolean enableNoAutoConnect() { 1503 if (isEnabled() == true){ 1504 if (DBG) Log.d(TAG, "enableNoAutoConnect(): BT is already enabled..!"); 1505 return true; 1506 } 1507 try { 1508 return mManagerService.enableNoAutoConnect(); 1509 } catch (RemoteException e) {Log.e(TAG, "", e);} 1510 return false; 1511 } 1512 1513 /** 1514 * Enable control of the Bluetooth Adapter for a single application. 1515 * 1516 * <p>Some applications need to use Bluetooth for short periods of time to 1517 * transfer data but don't want all the associated implications like 1518 * automatic connection to headsets etc. 1519 * 1520 * <p> Multiple applications can call this. This is reference counted and 1521 * Bluetooth disabled only when no one else is using it. There will be no UI 1522 * shown to the user while bluetooth is being enabled. Any user action will 1523 * override this call. For example, if user wants Bluetooth on and the last 1524 * user of this API wanted to disable Bluetooth, Bluetooth will not be 1525 * turned off. 1526 * 1527 * <p> This API is only meant to be used by internal applications. Third 1528 * party applications but use {@link #enable} and {@link #disable} APIs. 1529 * 1530 * <p> If this API returns true, it means the callback will be called. 1531 * The callback will be called with the current state of Bluetooth. 1532 * If the state is not what was requested, an internal error would be the 1533 * reason. If Bluetooth is already on and if this function is called to turn 1534 * it on, the api will return true and a callback will be called. 1535 * 1536 * <p>Requires {@link android.Manifest.permission#BLUETOOTH} 1537 * 1538 * @param on True for on, false for off. 1539 * @param callback The callback to notify changes to the state. 1540 * @hide 1541 */ 1542 public boolean changeApplicationBluetoothState(boolean on, 1543 BluetoothStateChangeCallback callback) { 1544 if (callback == null) return false; 1545 1546 //TODO(BT) 1547 /* 1548 try { 1549 return mService.changeApplicationBluetoothState(on, new 1550 StateChangeCallbackWrapper(callback), new Binder()); 1551 } catch (RemoteException e) { 1552 Log.e(TAG, "changeBluetoothState", e); 1553 }*/ 1554 return false; 1555 } 1556 1557 /** 1558 * @hide 1559 */ 1560 public interface BluetoothStateChangeCallback { 1561 public void onBluetoothStateChange(boolean on); 1562 } 1563 1564 /** 1565 * @hide 1566 */ 1567 public class StateChangeCallbackWrapper extends IBluetoothStateChangeCallback.Stub { 1568 private BluetoothStateChangeCallback mCallback; 1569 1570 StateChangeCallbackWrapper(BluetoothStateChangeCallback 1571 callback) { 1572 mCallback = callback; 1573 } 1574 1575 @Override 1576 public void onBluetoothStateChange(boolean on) { 1577 mCallback.onBluetoothStateChange(on); 1578 } 1579 } 1580 1581 private Set<BluetoothDevice> toDeviceSet(BluetoothDevice[] devices) { 1582 Set<BluetoothDevice> deviceSet = new HashSet<BluetoothDevice>(Arrays.asList(devices)); 1583 return Collections.unmodifiableSet(deviceSet); 1584 } 1585 1586 protected void finalize() throws Throwable { 1587 try { 1588 mManagerService.unregisterAdapter(mManagerCallback); 1589 } catch (RemoteException e) { 1590 Log.e(TAG, "", e); 1591 } finally { 1592 super.finalize(); 1593 } 1594 } 1595 1596 1597 /** 1598 * Validate a String Bluetooth address, such as "00:43:A8:23:10:F0" 1599 * <p>Alphabetic characters must be uppercase to be valid. 1600 * 1601 * @param address Bluetooth address as string 1602 * @return true if the address is valid, false otherwise 1603 */ 1604 public static boolean checkBluetoothAddress(String address) { 1605 if (address == null || address.length() != ADDRESS_LENGTH) { 1606 return false; 1607 } 1608 for (int i = 0; i < ADDRESS_LENGTH; i++) { 1609 char c = address.charAt(i); 1610 switch (i % 3) { 1611 case 0: 1612 case 1: 1613 if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F')) { 1614 // hex character, OK 1615 break; 1616 } 1617 return false; 1618 case 2: 1619 if (c == ':') { 1620 break; // OK 1621 } 1622 return false; 1623 } 1624 } 1625 return true; 1626 } 1627 1628 /*package*/ IBluetoothManager getBluetoothManager() { 1629 return mManagerService; 1630 } 1631 1632 private ArrayList<IBluetoothManagerCallback> mProxyServiceStateCallbacks = new ArrayList<IBluetoothManagerCallback>(); 1633 1634 /*package*/ IBluetooth getBluetoothService(IBluetoothManagerCallback cb) { 1635 synchronized (mManagerCallback) { 1636 if (cb == null) { 1637 Log.w(TAG, "getBluetoothService() called with no BluetoothManagerCallback"); 1638 } else if (!mProxyServiceStateCallbacks.contains(cb)) { 1639 mProxyServiceStateCallbacks.add(cb); 1640 } 1641 } 1642 return mService; 1643 } 1644 1645 /*package*/ void removeServiceStateCallback(IBluetoothManagerCallback cb) { 1646 synchronized (mManagerCallback) { 1647 mProxyServiceStateCallbacks.remove(cb); 1648 } 1649 } 1650 1651 /** 1652 * Callback interface used to deliver LE scan results. 1653 * 1654 * @see #startLeScan(LeScanCallback) 1655 * @see #startLeScan(UUID[], LeScanCallback) 1656 */ 1657 public interface LeScanCallback { 1658 /** 1659 * Callback reporting an LE device found during a device scan initiated 1660 * by the {@link BluetoothAdapter#startLeScan} function. 1661 * 1662 * @param device Identifies the remote device 1663 * @param rssi The RSSI value for the remote device as reported by the 1664 * Bluetooth hardware. 0 if no RSSI value is available. 1665 * @param scanRecord The content of the advertisement record offered by 1666 * the remote device. 1667 */ 1668 public void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord); 1669 } 1670 1671 /** 1672 * Starts a scan for Bluetooth LE devices. 1673 * 1674 * <p>Results of the scan are reported using the 1675 * {@link LeScanCallback#onLeScan} callback. 1676 * 1677 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 1678 * 1679 * @param callback the callback LE scan results are delivered 1680 * @return true, if the scan was started successfully 1681 */ 1682 public boolean startLeScan(LeScanCallback callback) { 1683 return startLeScan(null, callback); 1684 } 1685 1686 /** 1687 * Starts a scan for Bluetooth LE devices, looking for devices that 1688 * advertise given services. 1689 * 1690 * <p>Devices which advertise all specified services are reported using the 1691 * {@link LeScanCallback#onLeScan} callback. 1692 * 1693 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 1694 * 1695 * @param serviceUuids Array of services to look for 1696 * @param callback the callback LE scan results are delivered 1697 * @return true, if the scan was started successfully 1698 */ 1699 public boolean startLeScan(UUID[] serviceUuids, LeScanCallback callback) { 1700 if (DBG) Log.d(TAG, "startLeScan(): " + serviceUuids); 1701 1702 if (callback == null) { 1703 if (DBG) Log.e(TAG, "startLeScan: null callback"); 1704 return false; 1705 } 1706 1707 synchronized(mLeScanClients) { 1708 if (mLeScanClients.containsKey(callback)) { 1709 if (DBG) Log.e(TAG, "LE Scan has already started"); 1710 return false; 1711 } 1712 1713 try { 1714 IBluetoothGatt iGatt = mManagerService.getBluetoothGatt(); 1715 if (iGatt == null) { 1716 // BLE is not supported 1717 return false; 1718 } 1719 1720 UUID uuid = UUID.randomUUID(); 1721 GattCallbackWrapper wrapper = new GattCallbackWrapper(this, callback, serviceUuids); 1722 iGatt.registerClient(new ParcelUuid(uuid), wrapper); 1723 if (wrapper.scanStarted()) { 1724 mLeScanClients.put(callback, wrapper); 1725 return true; 1726 } 1727 } catch (RemoteException e) { 1728 Log.e(TAG,"",e); 1729 } 1730 } 1731 return false; 1732 } 1733 1734 /** 1735 * Stops an ongoing Bluetooth LE device scan. 1736 * 1737 * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission. 1738 * 1739 * @param callback used to identify which scan to stop 1740 * must be the same handle used to start the scan 1741 */ 1742 public void stopLeScan(LeScanCallback callback) { 1743 if (DBG) Log.d(TAG, "stopLeScan()"); 1744 GattCallbackWrapper wrapper; 1745 synchronized(mLeScanClients) { 1746 wrapper = mLeScanClients.remove(callback); 1747 if (wrapper == null) return; 1748 } 1749 wrapper.stopLeScan(); 1750 } 1751 1752 /** 1753 * Bluetooth GATT interface callbacks 1754 */ 1755 private static class GattCallbackWrapper extends IBluetoothGattCallback.Stub { 1756 private static final int LE_CALLBACK_REG_TIMEOUT = 2000; 1757 private static final int LE_CALLBACK_REG_WAIT_COUNT = 5; 1758 1759 private final AdvertiseCallback mAdvertiseCallback; 1760 private final LeScanCallback mLeScanCb; 1761 1762 // mLeHandle 0: not registered 1763 // -1: scan stopped 1764 // >0: registered and scan started 1765 private int mLeHandle; 1766 private final UUID[] mScanFilter; 1767 private WeakReference<BluetoothAdapter> mBluetoothAdapter; 1768 1769 public GattCallbackWrapper(BluetoothAdapter bluetoothAdapter, 1770 LeScanCallback leScanCb, UUID[] uuid) { 1771 mBluetoothAdapter = new WeakReference<BluetoothAdapter>(bluetoothAdapter); 1772 mLeScanCb = leScanCb; 1773 mScanFilter = uuid; 1774 mLeHandle = 0; 1775 mAdvertiseCallback = null; 1776 } 1777 1778 public GattCallbackWrapper(BluetoothAdapter bluetoothAdapter, LeScanCallback leScanCb, 1779 UUID[] uuid, AdvertiseCallback callback) { 1780 mBluetoothAdapter = new WeakReference<BluetoothAdapter>(bluetoothAdapter); 1781 mLeScanCb = leScanCb; 1782 mScanFilter = uuid; 1783 mLeHandle = 0; 1784 mAdvertiseCallback = callback; 1785 } 1786 1787 public boolean scanStarted() { 1788 return waitForRegisteration(LE_CALLBACK_REG_WAIT_COUNT); 1789 } 1790 1791 public boolean advertiseStarted() { 1792 // Wait for registeration callback. 1793 return waitForRegisteration(1); 1794 } 1795 1796 private boolean waitForRegisteration(int maxWaitCount) { 1797 boolean started = false; 1798 synchronized(this) { 1799 if (mLeHandle == -1) return false; 1800 int count = 0; 1801 // wait for callback registration and LE scan to start 1802 while (mLeHandle == 0 && count < maxWaitCount) { 1803 try { 1804 wait(LE_CALLBACK_REG_TIMEOUT); 1805 } catch (InterruptedException e) { 1806 Log.e(TAG, "Callback reg wait interrupted: " + e); 1807 } 1808 count++; 1809 } 1810 started = (mLeHandle > 0); 1811 } 1812 return started; 1813 } 1814 1815 public void stopAdvertising() { 1816 synchronized (this) { 1817 if (mLeHandle <= 0) { 1818 Log.e(TAG, "Error state, mLeHandle: " + mLeHandle); 1819 return; 1820 } 1821 BluetoothAdapter adapter = mBluetoothAdapter.get(); 1822 if (adapter != null) { 1823 try { 1824 IBluetoothGatt iGatt = adapter.getBluetoothManager().getBluetoothGatt(); 1825 iGatt.stopAdvertising(); 1826 } catch (RemoteException e) { 1827 Log.e(TAG, "Failed to stop advertising" + e); 1828 } 1829 } else { 1830 Log.e(TAG, "stopAdvertising, BluetoothAdapter is null"); 1831 } 1832 notifyAll(); 1833 } 1834 } 1835 1836 public void stopLeScan() { 1837 synchronized(this) { 1838 if (mLeHandle <= 0) { 1839 Log.e(TAG, "Error state, mLeHandle: " + mLeHandle); 1840 return; 1841 } 1842 BluetoothAdapter adapter = mBluetoothAdapter.get(); 1843 if (adapter != null) { 1844 try { 1845 IBluetoothGatt iGatt = adapter.getBluetoothManager().getBluetoothGatt(); 1846 iGatt.stopScan(mLeHandle, false); 1847 iGatt.unregisterClient(mLeHandle); 1848 } catch (RemoteException e) { 1849 Log.e(TAG, "Failed to stop scan and unregister" + e); 1850 } 1851 } else { 1852 Log.e(TAG, "stopLeScan, BluetoothAdapter is null"); 1853 } 1854 mLeHandle = -1; 1855 notifyAll(); 1856 } 1857 } 1858 1859 /** 1860 * Application interface registered - app is ready to go 1861 */ 1862 public void onClientRegistered(int status, int clientIf) { 1863 if (DBG) Log.d(TAG, "onClientRegistered() - status=" + status + 1864 " clientIf=" + clientIf); 1865 synchronized(this) { 1866 if (mLeHandle == -1) { 1867 if (DBG) Log.d(TAG, "onClientRegistered LE scan canceled"); 1868 } 1869 1870 if (status == BluetoothGatt.GATT_SUCCESS) { 1871 mLeHandle = clientIf; 1872 IBluetoothGatt iGatt = null; 1873 try { 1874 BluetoothAdapter adapter = mBluetoothAdapter.get(); 1875 if (adapter != null) { 1876 iGatt = adapter.getBluetoothManager().getBluetoothGatt(); 1877 if (mAdvertiseCallback != null) { 1878 iGatt.startAdvertising(mLeHandle); 1879 } else { 1880 if (mScanFilter == null) { 1881 iGatt.startScan(mLeHandle, false); 1882 } else { 1883 ParcelUuid[] uuids = new ParcelUuid[mScanFilter.length]; 1884 for(int i = 0; i != uuids.length; ++i) { 1885 uuids[i] = new ParcelUuid(mScanFilter[i]); 1886 } 1887 iGatt.startScanWithUuids(mLeHandle, false, uuids); 1888 } 1889 } 1890 } else { 1891 Log.e(TAG, "onClientRegistered, BluetoothAdapter null"); 1892 mLeHandle = -1; 1893 } 1894 } catch (RemoteException e) { 1895 Log.e(TAG, "fail to start le scan: " + e); 1896 mLeHandle = -1; 1897 } 1898 if (mLeHandle == -1) { 1899 // registration succeeded but start scan or advertise failed 1900 if (iGatt != null) { 1901 try { 1902 iGatt.unregisterClient(mLeHandle); 1903 } catch (RemoteException e) { 1904 Log.e(TAG, "fail to unregister callback: " + mLeHandle + 1905 " error: " + e); 1906 } 1907 } 1908 } 1909 } else { 1910 // registration failed 1911 mLeHandle = -1; 1912 } 1913 notifyAll(); 1914 } 1915 } 1916 1917 public void onClientConnectionState(int status, int clientIf, 1918 boolean connected, String address) { 1919 // no op 1920 } 1921 1922 /** 1923 * Callback reporting an LE scan result. 1924 * @hide 1925 */ 1926 public void onScanResult(String address, int rssi, byte[] advData) { 1927 if (VDBG) Log.d(TAG, "onScanResult() - Device=" + address + " RSSI=" +rssi); 1928 1929 // Check null in case the scan has been stopped 1930 synchronized(this) { 1931 if (mLeHandle <= 0) return; 1932 } 1933 try { 1934 BluetoothAdapter adapter = mBluetoothAdapter.get(); 1935 if (adapter == null) { 1936 Log.d(TAG, "onScanResult, BluetoothAdapter null"); 1937 return; 1938 } 1939 mLeScanCb.onLeScan(adapter.getRemoteDevice(address), rssi, advData); 1940 } catch (Exception ex) { 1941 Log.w(TAG, "Unhandled exception: " + ex); 1942 } 1943 } 1944 1945 public void onGetService(String address, int srvcType, 1946 int srvcInstId, ParcelUuid srvcUuid) { 1947 // no op 1948 } 1949 1950 public void onGetIncludedService(String address, int srvcType, 1951 int srvcInstId, ParcelUuid srvcUuid, 1952 int inclSrvcType, int inclSrvcInstId, 1953 ParcelUuid inclSrvcUuid) { 1954 // no op 1955 } 1956 1957 public void onGetCharacteristic(String address, int srvcType, 1958 int srvcInstId, ParcelUuid srvcUuid, 1959 int charInstId, ParcelUuid charUuid, 1960 int charProps) { 1961 // no op 1962 } 1963 1964 public void onGetDescriptor(String address, int srvcType, 1965 int srvcInstId, ParcelUuid srvcUuid, 1966 int charInstId, ParcelUuid charUuid, 1967 int descInstId, ParcelUuid descUuid) { 1968 // no op 1969 } 1970 1971 public void onSearchComplete(String address, int status) { 1972 // no op 1973 } 1974 1975 public void onCharacteristicRead(String address, int status, int srvcType, 1976 int srvcInstId, ParcelUuid srvcUuid, 1977 int charInstId, ParcelUuid charUuid, byte[] value) { 1978 // no op 1979 } 1980 1981 public void onCharacteristicWrite(String address, int status, int srvcType, 1982 int srvcInstId, ParcelUuid srvcUuid, 1983 int charInstId, ParcelUuid charUuid) { 1984 // no op 1985 } 1986 1987 public void onNotify(String address, int srvcType, 1988 int srvcInstId, ParcelUuid srvcUuid, 1989 int charInstId, ParcelUuid charUuid, 1990 byte[] value) { 1991 // no op 1992 } 1993 1994 public void onDescriptorRead(String address, int status, int srvcType, 1995 int srvcInstId, ParcelUuid srvcUuid, 1996 int charInstId, ParcelUuid charUuid, 1997 int descInstId, ParcelUuid descrUuid, byte[] value) { 1998 // no op 1999 } 2000 2001 public void onDescriptorWrite(String address, int status, int srvcType, 2002 int srvcInstId, ParcelUuid srvcUuid, 2003 int charInstId, ParcelUuid charUuid, 2004 int descInstId, ParcelUuid descrUuid) { 2005 // no op 2006 } 2007 2008 public void onExecuteWrite(String address, int status) { 2009 // no op 2010 } 2011 2012 public void onReadRemoteRssi(String address, int rssi, int status) { 2013 // no op 2014 } 2015 2016 public void onAdvertiseStateChange(int advertiseState, int status) { 2017 Log.d(TAG, "on advertise call back, state: " + advertiseState + " status: " + status); 2018 if (advertiseState == STATE_ADVERTISE_STARTED) { 2019 if (status == ADVERTISE_CALLBACK_SUCCESS) { 2020 mAdvertiseCallback.onAdvertiseStart(status); 2021 } else { 2022 // If status is unsuccessful and advertise state is started, it means stop 2023 // advertising fails. 2024 mAdvertiseCallback.onAdvertiseStop(status); 2025 } 2026 } else { 2027 synchronized (this) { 2028 if (status == ADVERTISE_CALLBACK_SUCCESS) { 2029 BluetoothAdapter adapter = mBluetoothAdapter.get(); 2030 if (adapter != null) { 2031 try { 2032 IBluetoothGatt iGatt = 2033 adapter.getBluetoothManager().getBluetoothGatt(); 2034 Log.d(TAG, "unregistering client " + mLeHandle); 2035 iGatt.unregisterClient(mLeHandle); 2036 // Reset advertise app handle. 2037 mLeHandle = -1; 2038 adapter.mAdvertisingGattCallback = null; 2039 } catch (RemoteException e) { 2040 Log.e(TAG, "Failed to unregister client" + e); 2041 } 2042 } else { 2043 Log.e(TAG, "cannot unregister client, BluetoothAdapter is null"); 2044 } 2045 } 2046 } 2047 if (status == ADVERTISE_CALLBACK_SUCCESS) { 2048 mAdvertiseCallback.onAdvertiseStop(status); 2049 } else{ 2050 // If status is unsuccesful and advertise state is stopped, it means start 2051 // advertising fails. 2052 mAdvertiseCallback.onAdvertiseStart(status); 2053 } 2054 } 2055 } 2056 2057 @Override 2058 public void onMultiAdvertiseCallback(int status) { 2059 // no op 2060 } 2061 /** 2062 * Callback reporting LE ATT MTU. 2063 * @hide 2064 */ 2065 public void onConfigureMTU(String address, int mtu, int status) { 2066 // no op 2067 } 2068 } 2069} 2070