Ganesh Ganapathi Batta | 9908112 | 2013-02-05 15:28:33 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.bluetooth; |
| 18 | |
| 19 | |
| 20 | import android.bluetooth.BluetoothAdapter; |
| 21 | import android.bluetooth.BluetoothDevice; |
| 22 | import android.bluetooth.BluetoothProfile; |
| 23 | import android.bluetooth.BluetoothProfile.ServiceListener; |
| 24 | import android.bluetooth.IBluetoothManager; |
| 25 | import android.bluetooth.IBluetoothStateChangeCallback; |
| 26 | |
| 27 | import android.content.ComponentName; |
| 28 | import android.content.Context; |
| 29 | import android.content.Intent; |
| 30 | import android.content.ServiceConnection; |
| 31 | import android.os.IBinder; |
| 32 | import android.os.ParcelUuid; |
| 33 | import android.os.RemoteException; |
| 34 | import android.os.ServiceManager; |
| 35 | import android.util.Log; |
| 36 | |
| 37 | import java.util.ArrayList; |
| 38 | import java.util.List; |
| 39 | import java.util.UUID; |
| 40 | |
| 41 | /** |
| 42 | * Public API for the Bluetooth Gatt Profile. |
| 43 | * |
| 44 | * <p>This class provides Bluetooth Gatt functionality to enable communication |
| 45 | * with Bluetooth Smart or Smart Ready devices. |
| 46 | * |
| 47 | * <p>BluetoothGatt is a proxy object for controlling the Bluetooth Service |
| 48 | * via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get the |
| 49 | * BluetoothGatt proxy object. |
| 50 | * |
| 51 | * <p>To connect to a remote peripheral device, create a {@link BluetoothGattCallback} |
| 52 | * and call {@link #registerApp} to register your application. Gatt capable |
| 53 | * devices can be discovered using the {@link #startScan} function or the |
| 54 | * regular Bluetooth device discovery process. |
| 55 | * @hide |
| 56 | */ |
| 57 | public final class BluetoothGatt implements BluetoothProfile { |
| 58 | private static final String TAG = "BluetoothGatt"; |
| 59 | private static final boolean DBG = true; |
| 60 | |
| 61 | private Context mContext; |
| 62 | private ServiceListener mServiceListener; |
| 63 | private BluetoothAdapter mAdapter; |
| 64 | private IBluetoothGatt mService; |
| 65 | private BluetoothGattCallback mCallback; |
| 66 | private int mClientIf; |
| 67 | private boolean mAuthRetry = false; |
| 68 | |
| 69 | private List<BluetoothGattService> mServices; |
| 70 | |
| 71 | /** A Gatt operation completed successfully */ |
| 72 | public static final int GATT_SUCCESS = 0; |
| 73 | |
| 74 | /** Gatt read operation is not permitted */ |
| 75 | public static final int GATT_READ_NOT_PERMITTED = 0x2; |
| 76 | |
| 77 | /** Gatt write operation is not permitted */ |
| 78 | public static final int GATT_WRITE_NOT_PERMITTED = 0x3; |
| 79 | |
| 80 | /** Insufficient authentication for a given operation */ |
| 81 | public static final int GATT_INSUFFICIENT_AUTHENTICATION = 0x5; |
| 82 | |
| 83 | /** The given request is not supported */ |
| 84 | public static final int GATT_REQUEST_NOT_SUPPORTED = 0x6; |
| 85 | |
| 86 | /** Insufficient encryption for a given operation */ |
| 87 | public static final int GATT_INSUFFICIENT_ENCRYPTION = 0xf; |
| 88 | |
| 89 | /** A read or write operation was requested with an invalid offset */ |
| 90 | public static final int GATT_INVALID_OFFSET = 0x7; |
| 91 | |
| 92 | /** A write operation exceeds the maximum length of the attribute */ |
| 93 | public static final int GATT_INVALID_ATTRIBUTE_LENGTH = 0xd; |
| 94 | |
| 95 | /** |
| 96 | * No authentication required. |
| 97 | * @hide |
| 98 | */ |
| 99 | /*package*/ static final int AUTHENTICATION_NONE = 0; |
| 100 | |
| 101 | /** |
| 102 | * Authentication requested; no man-in-the-middle protection required. |
| 103 | * @hide |
| 104 | */ |
| 105 | /*package*/ static final int AUTHENTICATION_NO_MITM = 1; |
| 106 | |
| 107 | /** |
| 108 | * Authentication with man-in-the-middle protection requested. |
| 109 | * @hide |
| 110 | */ |
| 111 | /*package*/ static final int AUTHENTICATION_MITM = 2; |
| 112 | |
| 113 | /** |
| 114 | * Bluetooth state change handlers |
| 115 | */ |
| 116 | private final IBluetoothStateChangeCallback mBluetoothStateChangeCallback = |
| 117 | new IBluetoothStateChangeCallback.Stub() { |
| 118 | public void onBluetoothStateChange(boolean up) { |
| 119 | if (DBG) Log.d(TAG, "onBluetoothStateChange: up=" + up); |
| 120 | if (!up) { |
| 121 | if (DBG) Log.d(TAG,"Unbinding service..."); |
| 122 | synchronized (mConnection) { |
| 123 | mService = null; |
| 124 | mContext.unbindService(mConnection); |
| 125 | } |
| 126 | } else { |
| 127 | synchronized (mConnection) { |
| 128 | if (mService == null) { |
| 129 | if (DBG) Log.d(TAG,"Binding service..."); |
| 130 | if (!mContext.bindService(new Intent(IBluetoothGatt.class.getName()), |
| 131 | mConnection, 0)) { |
| 132 | Log.e(TAG, "Could not bind to Bluetooth GATT Service"); |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | } |
| 137 | } |
| 138 | }; |
| 139 | |
| 140 | /** |
| 141 | * Service binder handling |
| 142 | */ |
| 143 | private ServiceConnection mConnection = new ServiceConnection() { |
| 144 | public void onServiceConnected(ComponentName className, IBinder service) { |
| 145 | if (DBG) Log.d(TAG, "Proxy object connected"); |
| 146 | mService = IBluetoothGatt.Stub.asInterface(service); |
| 147 | ServiceListener serviceListener = mServiceListener; |
| 148 | if (serviceListener != null) { |
| 149 | serviceListener.onServiceConnected(BluetoothProfile.GATT, BluetoothGatt.this); |
| 150 | } |
| 151 | } |
| 152 | public void onServiceDisconnected(ComponentName className) { |
| 153 | if (DBG) Log.d(TAG, "Proxy object disconnected"); |
| 154 | mService = null; |
| 155 | ServiceListener serviceListener = mServiceListener; |
| 156 | if (serviceListener != null) { |
| 157 | serviceListener.onServiceDisconnected(BluetoothProfile.GATT); |
| 158 | } |
| 159 | } |
| 160 | }; |
| 161 | |
| 162 | /** |
| 163 | * Bluetooth GATT interface callbacks |
| 164 | */ |
| 165 | private final IBluetoothGattCallback mBluetoothGattCallback = |
| 166 | new IBluetoothGattCallback.Stub() { |
| 167 | /** |
| 168 | * Application interface registered - app is ready to go |
| 169 | * @hide |
| 170 | */ |
| 171 | public void onClientRegistered(int status, int clientIf) { |
| 172 | if (DBG) Log.d(TAG, "onClientRegistered() - status=" + status |
| 173 | + " clientIf=" + clientIf); |
| 174 | mClientIf = clientIf; |
| 175 | try { |
| 176 | mCallback.onAppRegistered(status); |
| 177 | } catch (Exception ex) { |
| 178 | Log.w(TAG, "Unhandled exception: " + ex); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * Client connection state changed |
| 184 | * @hide |
| 185 | */ |
| 186 | public void onClientConnectionState(int status, int clientIf, |
| 187 | boolean connected, String address) { |
| 188 | if (DBG) Log.d(TAG, "onClientConnectionState() - status=" + status |
| 189 | + " clientIf=" + clientIf + " device=" + address); |
| 190 | try { |
| 191 | mCallback.onConnectionStateChange(mAdapter.getRemoteDevice(address), status, |
| 192 | connected ? BluetoothProfile.STATE_CONNECTED |
| 193 | : BluetoothProfile.STATE_DISCONNECTED); |
| 194 | } catch (Exception ex) { |
| 195 | Log.w(TAG, "Unhandled exception: " + ex); |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * Callback reporting an LE scan result. |
| 201 | * @hide |
| 202 | */ |
| 203 | public void onScanResult(String address, int rssi, byte[] advData) { |
| 204 | if (DBG) Log.d(TAG, "onScanResult() - Device=" + address + " RSSI=" +rssi); |
| 205 | |
| 206 | try { |
| 207 | mCallback.onScanResult(mAdapter.getRemoteDevice(address), rssi, advData); |
| 208 | } catch (Exception ex) { |
| 209 | Log.w(TAG, "Unhandled exception: " + ex); |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * A new GATT service has been discovered. |
| 215 | * The service is added to the internal list and the search |
| 216 | * continues. |
| 217 | * @hide |
| 218 | */ |
| 219 | public void onGetService(String address, int srvcType, |
| 220 | int srvcInstId, ParcelUuid srvcUuid) { |
| 221 | if (DBG) Log.d(TAG, "onGetService() - Device=" + address + " UUID=" + srvcUuid); |
| 222 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 223 | mServices.add(new BluetoothGattService(device, srvcUuid.getUuid(), |
| 224 | srvcInstId, srvcType)); |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * An included service has been found durig GATT discovery. |
| 229 | * The included service is added to the respective parent. |
| 230 | * @hide |
| 231 | */ |
| 232 | public void onGetIncludedService(String address, int srvcType, |
| 233 | int srvcInstId, ParcelUuid srvcUuid, |
| 234 | int inclSrvcType, int inclSrvcInstId, |
| 235 | ParcelUuid inclSrvcUuid) { |
| 236 | if (DBG) Log.d(TAG, "onGetIncludedService() - Device=" + address |
| 237 | + " UUID=" + srvcUuid + " Included=" + inclSrvcUuid); |
| 238 | |
| 239 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 240 | BluetoothGattService service = getService(device, |
| 241 | srvcUuid.getUuid(), srvcInstId, srvcType); |
| 242 | BluetoothGattService includedService = getService(device, |
| 243 | inclSrvcUuid.getUuid(), inclSrvcInstId, inclSrvcType); |
| 244 | |
| 245 | if (service != null && includedService != null) { |
| 246 | service.addIncludedService(includedService); |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * A new GATT characteristic has been discovered. |
| 252 | * Add the new characteristic to the relevant service and continue |
| 253 | * the remote device inspection. |
| 254 | * @hide |
| 255 | */ |
| 256 | public void onGetCharacteristic(String address, int srvcType, |
| 257 | int srvcInstId, ParcelUuid srvcUuid, |
| 258 | int charInstId, ParcelUuid charUuid, |
| 259 | int charProps) { |
| 260 | if (DBG) Log.d(TAG, "onGetCharacteristic() - Device=" + address + " UUID=" + |
| 261 | charUuid); |
| 262 | |
| 263 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 264 | BluetoothGattService service = getService(device, srvcUuid.getUuid(), |
| 265 | srvcInstId, srvcType); |
| 266 | if (service != null) { |
| 267 | service.addCharacteristic(new BluetoothGattCharacteristic( |
| 268 | service, charUuid.getUuid(), charInstId, charProps, 0)); |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * A new GATT descriptor has been discovered. |
| 274 | * Finally, add the descriptor to the related characteristic. |
| 275 | * This should conclude the remote device update. |
| 276 | * @hide |
| 277 | */ |
| 278 | public void onGetDescriptor(String address, int srvcType, |
| 279 | int srvcInstId, ParcelUuid srvcUuid, |
| 280 | int charInstId, ParcelUuid charUuid, |
| 281 | ParcelUuid descUuid) { |
| 282 | if (DBG) Log.d(TAG, "onGetDescriptor() - Device=" + address + " UUID=" + descUuid); |
| 283 | |
| 284 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 285 | BluetoothGattService service = getService(device, srvcUuid.getUuid(), |
| 286 | srvcInstId, srvcType); |
| 287 | if (service == null) return; |
| 288 | |
| 289 | BluetoothGattCharacteristic characteristic = service.getCharacteristic( |
| 290 | charUuid.getUuid()); |
| 291 | if (characteristic == null) return; |
| 292 | |
| 293 | characteristic.addDescriptor(new BluetoothGattDescriptor( |
| 294 | characteristic, descUuid.getUuid(), 0)); |
| 295 | } |
| 296 | |
| 297 | /** |
| 298 | * Remote search has been completed. |
| 299 | * The internal object structure should now reflect the state |
| 300 | * of the remote device database. Let the application know that |
| 301 | * we are done at this point. |
| 302 | * @hide |
| 303 | */ |
| 304 | public void onSearchComplete(String address, int status) { |
| 305 | if (DBG) Log.d(TAG, "onSearchComplete() = Device=" + address + " Status=" + status); |
| 306 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 307 | try { |
| 308 | mCallback.onServicesDiscovered(device, status); |
| 309 | } catch (Exception ex) { |
| 310 | Log.w(TAG, "Unhandled exception: " + ex); |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Remote characteristic has been read. |
| 316 | * Updates the internal value. |
| 317 | * @hide |
| 318 | */ |
| 319 | public void onCharacteristicRead(String address, int status, int srvcType, |
| 320 | int srvcInstId, ParcelUuid srvcUuid, |
| 321 | int charInstId, ParcelUuid charUuid, byte[] value) { |
| 322 | if (DBG) Log.d(TAG, "onCharacteristicRead() - Device=" + address |
| 323 | + " UUID=" + charUuid + " Status=" + status); |
| 324 | |
| 325 | if ((status == GATT_INSUFFICIENT_AUTHENTICATION |
| 326 | || status == GATT_INSUFFICIENT_ENCRYPTION) |
| 327 | && mAuthRetry == false) { |
| 328 | try { |
| 329 | mAuthRetry = true; |
| 330 | mService.readCharacteristic(mClientIf, address, |
| 331 | srvcType, srvcInstId, srvcUuid, |
| 332 | charInstId, charUuid, AUTHENTICATION_MITM); |
| 333 | return; |
| 334 | } catch (RemoteException e) { |
| 335 | Log.e(TAG,"",e); |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | mAuthRetry = false; |
| 340 | |
| 341 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 342 | BluetoothGattService service = getService(device, srvcUuid.getUuid(), |
| 343 | srvcInstId, srvcType); |
| 344 | if (service == null) return; |
| 345 | |
| 346 | BluetoothGattCharacteristic characteristic = service.getCharacteristic( |
| 347 | charUuid.getUuid(), charInstId); |
| 348 | if (characteristic == null) return; |
| 349 | |
| 350 | if (status == 0) characteristic.setValue(value); |
| 351 | |
| 352 | try { |
| 353 | mCallback.onCharacteristicRead(characteristic, status); |
| 354 | } catch (Exception ex) { |
| 355 | Log.w(TAG, "Unhandled exception: " + ex); |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | /** |
| 360 | * Characteristic has been written to the remote device. |
| 361 | * Let the app know how we did... |
| 362 | * @hide |
| 363 | */ |
| 364 | public void onCharacteristicWrite(String address, int status, int srvcType, |
| 365 | int srvcInstId, ParcelUuid srvcUuid, |
| 366 | int charInstId, ParcelUuid charUuid) { |
| 367 | if (DBG) Log.d(TAG, "onCharacteristicWrite() - Device=" + address |
| 368 | + " UUID=" + charUuid + " Status=" + status); |
| 369 | |
| 370 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 371 | BluetoothGattService service = getService(device, srvcUuid.getUuid(), |
| 372 | srvcInstId, srvcType); |
| 373 | if (service == null) return; |
| 374 | |
| 375 | BluetoothGattCharacteristic characteristic = service.getCharacteristic( |
| 376 | charUuid.getUuid(), charInstId); |
| 377 | if (characteristic == null) return; |
| 378 | |
| 379 | if ((status == GATT_INSUFFICIENT_AUTHENTICATION |
| 380 | || status == GATT_INSUFFICIENT_ENCRYPTION) |
| 381 | && mAuthRetry == false) { |
| 382 | try { |
| 383 | mAuthRetry = true; |
| 384 | mService.writeCharacteristic(mClientIf, address, |
| 385 | srvcType, srvcInstId, srvcUuid, charInstId, charUuid, |
| 386 | characteristic.getWriteType(), AUTHENTICATION_MITM, |
| 387 | characteristic.getValue()); |
| 388 | return; |
| 389 | } catch (RemoteException e) { |
| 390 | Log.e(TAG,"",e); |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | mAuthRetry = false; |
| 395 | |
| 396 | try { |
| 397 | mCallback.onCharacteristicWrite(characteristic, status); |
| 398 | } catch (Exception ex) { |
| 399 | Log.w(TAG, "Unhandled exception: " + ex); |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | /** |
| 404 | * Remote characteristic has been updated. |
| 405 | * Updates the internal value. |
| 406 | * @hide |
| 407 | */ |
| 408 | public void onNotify(String address, int srvcType, |
| 409 | int srvcInstId, ParcelUuid srvcUuid, |
| 410 | int charInstId, ParcelUuid charUuid, |
| 411 | byte[] value) { |
| 412 | if (DBG) Log.d(TAG, "onNotify() - Device=" + address + " UUID=" + charUuid); |
| 413 | |
| 414 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 415 | BluetoothGattService service = getService(device, srvcUuid.getUuid(), |
| 416 | srvcInstId, srvcType); |
| 417 | if (service == null) return; |
| 418 | |
| 419 | BluetoothGattCharacteristic characteristic = service.getCharacteristic( |
| 420 | charUuid.getUuid(), charInstId); |
| 421 | if (characteristic == null) return; |
| 422 | |
| 423 | characteristic.setValue(value); |
| 424 | |
| 425 | try { |
| 426 | mCallback.onCharacteristicChanged(characteristic); |
| 427 | } catch (Exception ex) { |
| 428 | Log.w(TAG, "Unhandled exception: " + ex); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | /** |
| 433 | * Descriptor has been read. |
| 434 | * @hide |
| 435 | */ |
| 436 | public void onDescriptorRead(String address, int status, int srvcType, |
| 437 | int srvcInstId, ParcelUuid srvcUuid, |
| 438 | int charInstId, ParcelUuid charUuid, |
| 439 | ParcelUuid descrUuid, byte[] value) { |
| 440 | if (DBG) Log.d(TAG, "onDescriptorRead() - Device=" + address + " UUID=" + charUuid); |
| 441 | |
| 442 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 443 | BluetoothGattService service = getService(device, srvcUuid.getUuid(), |
| 444 | srvcInstId, srvcType); |
| 445 | if (service == null) return; |
| 446 | |
| 447 | BluetoothGattCharacteristic characteristic = service.getCharacteristic( |
| 448 | charUuid.getUuid(), charInstId); |
| 449 | if (characteristic == null) return; |
| 450 | |
| 451 | BluetoothGattDescriptor descriptor = characteristic.getDescriptor( |
| 452 | descrUuid.getUuid()); |
| 453 | if (descriptor == null) return; |
| 454 | |
| 455 | if (status == 0) descriptor.setValue(value); |
| 456 | |
| 457 | if ((status == GATT_INSUFFICIENT_AUTHENTICATION |
| 458 | || status == GATT_INSUFFICIENT_ENCRYPTION) |
| 459 | && mAuthRetry == false) { |
| 460 | try { |
| 461 | mAuthRetry = true; |
| 462 | mService.readDescriptor(mClientIf, address, |
| 463 | srvcType, srvcInstId, srvcUuid, charInstId, charUuid, |
| 464 | descrUuid, AUTHENTICATION_MITM); |
| 465 | } catch (RemoteException e) { |
| 466 | Log.e(TAG,"",e); |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | mAuthRetry = true; |
| 471 | |
| 472 | try { |
| 473 | mCallback.onDescriptorRead(descriptor, status); |
| 474 | } catch (Exception ex) { |
| 475 | Log.w(TAG, "Unhandled exception: " + ex); |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | /** |
| 480 | * Descriptor write operation complete. |
| 481 | * @hide |
| 482 | */ |
| 483 | public void onDescriptorWrite(String address, int status, int srvcType, |
| 484 | int srvcInstId, ParcelUuid srvcUuid, |
| 485 | int charInstId, ParcelUuid charUuid, |
| 486 | ParcelUuid descrUuid) { |
| 487 | if (DBG) Log.d(TAG, "onDescriptorWrite() - Device=" + address + " UUID=" + charUuid); |
| 488 | |
| 489 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 490 | BluetoothGattService service = getService(device, srvcUuid.getUuid(), |
| 491 | srvcInstId, srvcType); |
| 492 | if (service == null) return; |
| 493 | |
| 494 | BluetoothGattCharacteristic characteristic = service.getCharacteristic( |
| 495 | charUuid.getUuid(), charInstId); |
| 496 | if (characteristic == null) return; |
| 497 | |
| 498 | BluetoothGattDescriptor descriptor = characteristic.getDescriptor( |
| 499 | descrUuid.getUuid()); |
| 500 | if (descriptor == null) return; |
| 501 | |
| 502 | if ((status == GATT_INSUFFICIENT_AUTHENTICATION |
| 503 | || status == GATT_INSUFFICIENT_ENCRYPTION) |
| 504 | && mAuthRetry == false) { |
| 505 | try { |
| 506 | mAuthRetry = true; |
| 507 | mService.writeDescriptor(mClientIf, address, |
| 508 | srvcType, srvcInstId, srvcUuid, charInstId, charUuid, |
| 509 | descrUuid, characteristic.getWriteType(), |
| 510 | AUTHENTICATION_MITM, descriptor.getValue()); |
| 511 | } catch (RemoteException e) { |
| 512 | Log.e(TAG,"",e); |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | mAuthRetry = false; |
| 517 | |
| 518 | try { |
| 519 | mCallback.onDescriptorWrite(descriptor, status); |
| 520 | } catch (Exception ex) { |
| 521 | Log.w(TAG, "Unhandled exception: " + ex); |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | /** |
| 526 | * Prepared write transaction completed (or aborted) |
| 527 | * @hide |
| 528 | */ |
| 529 | public void onExecuteWrite(String address, int status) { |
| 530 | if (DBG) Log.d(TAG, "onExecuteWrite() - Device=" + address |
| 531 | + " status=" + status); |
| 532 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 533 | try { |
| 534 | mCallback.onReliableWriteCompleted(device, status); |
| 535 | } catch (Exception ex) { |
| 536 | Log.w(TAG, "Unhandled exception: " + ex); |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | /** |
| 541 | * Remote device RSSI has been read |
| 542 | * @hide |
| 543 | */ |
| 544 | public void onReadRemoteRssi(String address, int rssi, int status) { |
| 545 | if (DBG) Log.d(TAG, "onReadRemoteRssi() - Device=" + address + |
| 546 | " rssi=" + rssi + " status=" + status); |
| 547 | BluetoothDevice device = mAdapter.getRemoteDevice(address); |
| 548 | try { |
| 549 | mCallback.onReadRemoteRssi(device, rssi, status); |
| 550 | } catch (Exception ex) { |
| 551 | Log.w(TAG, "Unhandled exception: " + ex); |
| 552 | } |
| 553 | } |
| 554 | }; |
| 555 | |
| 556 | /** |
| 557 | * Create a BluetoothGatt proxy object. |
| 558 | */ |
| 559 | /*package*/ BluetoothGatt(Context context, ServiceListener l) { |
| 560 | mContext = context; |
| 561 | mServiceListener = l; |
| 562 | mAdapter = BluetoothAdapter.getDefaultAdapter(); |
| 563 | mServices = new ArrayList<BluetoothGattService>(); |
| 564 | |
| 565 | IBinder b = ServiceManager.getService(BluetoothAdapter.BLUETOOTH_MANAGER_SERVICE); |
| 566 | if (b != null) { |
| 567 | IBluetoothManager mgr = IBluetoothManager.Stub.asInterface(b); |
| 568 | try { |
| 569 | mgr.registerStateChangeCallback(mBluetoothStateChangeCallback); |
| 570 | } catch (RemoteException re) { |
| 571 | Log.e(TAG, "Unable to register BluetoothStateChangeCallback", re); |
| 572 | } |
| 573 | } else { |
| 574 | Log.e(TAG, "Unable to get BluetoothManager interface."); |
| 575 | throw new RuntimeException("BluetoothManager inactive"); |
| 576 | } |
| 577 | |
| 578 | //Bind to the service only if the Bluetooth is ON |
| 579 | if(mAdapter.isEnabled()){ |
| 580 | if (!context.bindService(new Intent(IBluetoothGatt.class.getName()), mConnection, 0)) { |
| 581 | Log.e(TAG, "Could not bind to Bluetooth Gatt Service"); |
| 582 | } |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | /** |
| 587 | * Close the connection to the gatt service. |
| 588 | */ |
| 589 | /*package*/ void close() { |
| 590 | if (DBG) Log.d(TAG, "close()"); |
| 591 | |
| 592 | unregisterApp(); |
| 593 | mServiceListener = null; |
| 594 | |
| 595 | IBinder b = ServiceManager.getService(BluetoothAdapter.BLUETOOTH_MANAGER_SERVICE); |
| 596 | if (b != null) { |
| 597 | IBluetoothManager mgr = IBluetoothManager.Stub.asInterface(b); |
| 598 | try { |
| 599 | mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback); |
| 600 | } catch (RemoteException re) { |
| 601 | Log.e(TAG, "Unable to unregister BluetoothStateChangeCallback", re); |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | synchronized (mConnection) { |
| 606 | if (mService != null) { |
| 607 | mService = null; |
| 608 | mContext.unbindService(mConnection); |
| 609 | } |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | /** |
| 614 | * Returns a service by UUID, instance and type. |
| 615 | * @hide |
| 616 | */ |
| 617 | /*package*/ BluetoothGattService getService(BluetoothDevice device, UUID uuid, |
| 618 | int instanceId, int type) { |
| 619 | for(BluetoothGattService svc : mServices) { |
| 620 | if (svc.getDevice().equals(device) && |
| 621 | svc.getType() == type && |
| 622 | svc.getInstanceId() == instanceId && |
| 623 | svc.getUuid().equals(uuid)) { |
| 624 | return svc; |
| 625 | } |
| 626 | } |
| 627 | return null; |
| 628 | } |
| 629 | |
| 630 | |
| 631 | /** |
| 632 | * Register an application callback to start using Gatt. |
| 633 | * |
| 634 | * <p>This is an asynchronous call. The callback is used to notify |
| 635 | * success or failure if the function returns true. |
| 636 | * |
| 637 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 638 | * |
| 639 | * @param callback Gatt callback handler that will receive asynchronous |
| 640 | * callbacks. |
| 641 | * @return true, if application was successfully registered. |
| 642 | */ |
| 643 | public boolean registerApp(BluetoothGattCallback callback) { |
| 644 | if (DBG) Log.d(TAG, "registerApp()"); |
| 645 | if (mService == null) return false; |
| 646 | |
| 647 | mCallback = callback; |
| 648 | UUID uuid = UUID.randomUUID(); |
| 649 | if (DBG) Log.d(TAG, "registerApp() - UUID=" + uuid); |
| 650 | |
| 651 | try { |
| 652 | mService.registerClient(new ParcelUuid(uuid), mBluetoothGattCallback); |
| 653 | } catch (RemoteException e) { |
| 654 | Log.e(TAG,"",e); |
| 655 | return false; |
| 656 | } |
| 657 | |
| 658 | return true; |
| 659 | } |
| 660 | |
| 661 | /** |
| 662 | * Unregister the current application and callbacks. |
| 663 | */ |
| 664 | public void unregisterApp() { |
| 665 | if (DBG) Log.d(TAG, "unregisterApp() - mClientIf=" + mClientIf); |
| 666 | if (mService == null || mClientIf == 0) return; |
| 667 | |
| 668 | try { |
| 669 | mCallback = null; |
| 670 | mService.unregisterClient(mClientIf); |
| 671 | mClientIf = 0; |
| 672 | } catch (RemoteException e) { |
| 673 | Log.e(TAG,"",e); |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | /** |
| 678 | * Starts a scan for Bluetooth LE devices. |
| 679 | * |
| 680 | * <p>Results of the scan are reported using the |
| 681 | * {@link BluetoothGattCallback#onScanResult} callback. |
| 682 | * |
| 683 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 684 | * |
| 685 | * @return true, if the scan was started successfully |
| 686 | */ |
| 687 | public boolean startScan() { |
| 688 | if (DBG) Log.d(TAG, "startScan()"); |
| 689 | if (mService == null || mClientIf == 0) return false; |
| 690 | |
| 691 | try { |
| 692 | mService.startScan(mClientIf, false); |
| 693 | } catch (RemoteException e) { |
| 694 | Log.e(TAG,"",e); |
| 695 | return false; |
| 696 | } |
| 697 | |
| 698 | return true; |
| 699 | } |
| 700 | |
| 701 | /** |
| 702 | * Starts a scan for Bluetooth LE devices, looking for devices that |
| 703 | * advertise given services. |
| 704 | * |
| 705 | * <p>Devices which advertise all specified services are reported using the |
| 706 | * {@link BluetoothGattCallback#onScanResult} callback. |
| 707 | * |
| 708 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 709 | * |
| 710 | * @param serviceUuids Array of services to look for |
| 711 | * @return true, if the scan was started successfully |
| 712 | */ |
| 713 | public boolean startScan(UUID[] serviceUuids) { |
| 714 | if (DBG) Log.d(TAG, "startScan() - with UUIDs"); |
| 715 | if (mService == null || mClientIf == 0) return false; |
| 716 | |
| 717 | try { |
| 718 | ParcelUuid[] uuids = new ParcelUuid[serviceUuids.length]; |
| 719 | for(int i = 0; i != uuids.length; ++i) { |
| 720 | uuids[i] = new ParcelUuid(serviceUuids[i]); |
| 721 | } |
| 722 | mService.startScanWithUuids(mClientIf, false, uuids); |
| 723 | } catch (RemoteException e) { |
| 724 | Log.e(TAG,"",e); |
| 725 | return false; |
| 726 | } |
| 727 | |
| 728 | return true; |
| 729 | } |
| 730 | |
| 731 | /** |
| 732 | * Stops an ongoing Bluetooth LE device scan. |
| 733 | * |
| 734 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 735 | */ |
| 736 | public void stopScan() { |
| 737 | if (DBG) Log.d(TAG, "stopScan()"); |
| 738 | if (mService == null || mClientIf == 0) return; |
| 739 | |
| 740 | try { |
| 741 | mService.stopScan(mClientIf, false); |
| 742 | } catch (RemoteException e) { |
| 743 | Log.e(TAG,"",e); |
| 744 | } |
| 745 | } |
| 746 | |
| 747 | /** |
| 748 | * Initiate a connection to a Bluetooth Gatt capable device. |
| 749 | * |
| 750 | * <p>The connection may not be established right away, but will be |
| 751 | * completed when the remote device is available. A |
| 752 | * {@link BluetoothGattCallback#onConnectionStateChange} callback will be |
| 753 | * invoked when the connection state changes as a result of this function. |
| 754 | * |
| 755 | * <p>The autoConnect paramter determines whether to actively connect to |
| 756 | * the remote device, or rather passively scan and finalize the connection |
| 757 | * when the remote device is in range/available. Generally, the first ever |
| 758 | * connection to a device should be direct (autoConnect set to false) and |
| 759 | * subsequent connections to known devices should be invoked with the |
| 760 | * autoConnect parameter set to false. |
| 761 | * |
| 762 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 763 | * |
| 764 | * @param device Remote device to connect to |
| 765 | * @param autoConnect Whether to directly connect to the remote device (false) |
| 766 | * or to automatically connect as soon as the remote |
| 767 | * device becomes available (true). |
| 768 | * @return true, if the connection attempt was initiated successfully |
| 769 | */ |
| 770 | public boolean connect(BluetoothDevice device, boolean autoConnect) { |
| 771 | if (DBG) Log.d(TAG, "connect() - device: " + device.getAddress() + ", auto: " + autoConnect); |
| 772 | if (mService == null || mClientIf == 0) return false; |
| 773 | |
| 774 | try { |
| 775 | mService.clientConnect(mClientIf, device.getAddress(), |
| 776 | autoConnect ? false : true); // autoConnect is inverse of "isDirect" |
| 777 | } catch (RemoteException e) { |
| 778 | Log.e(TAG,"",e); |
| 779 | return false; |
| 780 | } |
| 781 | |
| 782 | return true; |
| 783 | } |
| 784 | |
| 785 | /** |
| 786 | * Disconnects an established connection, or cancels a connection attempt |
| 787 | * currently in progress. |
| 788 | * |
| 789 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 790 | * |
| 791 | * @param device Remote device |
| 792 | */ |
| 793 | public void cancelConnection(BluetoothDevice device) { |
| 794 | if (DBG) Log.d(TAG, "cancelOpen() - device: " + device.getAddress()); |
| 795 | if (mService == null || mClientIf == 0) return; |
| 796 | |
| 797 | try { |
| 798 | mService.clientDisconnect(mClientIf, device.getAddress()); |
| 799 | } catch (RemoteException e) { |
| 800 | Log.e(TAG,"",e); |
| 801 | } |
| 802 | } |
| 803 | |
| 804 | /** |
| 805 | * Discovers services offered by a remote device as well as their |
| 806 | * characteristics and descriptors. |
| 807 | * |
| 808 | * <p>This is an asynchronous operation. Once service discovery is completed, |
| 809 | * the {@link BluetoothGattCallback#onServicesDiscovered} callback is |
| 810 | * triggered. If the discovery was successful, the remote services can be |
| 811 | * retrieved using the {@link #getServices} function. |
| 812 | * |
| 813 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 814 | * |
| 815 | * @param device Remote device to explore |
| 816 | * @return true, if the remote service discovery has been started |
| 817 | */ |
| 818 | public boolean discoverServices(BluetoothDevice device) { |
| 819 | if (DBG) Log.d(TAG, "discoverServices() - device: " + device.getAddress()); |
| 820 | if (mService == null || mClientIf == 0) return false; |
| 821 | |
| 822 | mServices.clear(); |
| 823 | |
| 824 | try { |
| 825 | mService.discoverServices(mClientIf, device.getAddress()); |
| 826 | } catch (RemoteException e) { |
| 827 | Log.e(TAG,"",e); |
| 828 | return false; |
| 829 | } |
| 830 | |
| 831 | return true; |
| 832 | } |
| 833 | |
| 834 | /** |
| 835 | * Returns a list of GATT services offered by the remote device. |
| 836 | * |
| 837 | * <p>This function requires that service discovery has been completed |
| 838 | * for the given device. |
| 839 | * |
| 840 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 841 | * |
| 842 | * @param device Remote device |
| 843 | * @return List of services on the remote device. Returns an empty list |
| 844 | * if service discovery has not yet been performed. |
| 845 | */ |
| 846 | public List<BluetoothGattService> getServices(BluetoothDevice device) { |
| 847 | List<BluetoothGattService> result = |
| 848 | new ArrayList<BluetoothGattService>(); |
| 849 | |
| 850 | for (BluetoothGattService service : mServices) { |
| 851 | if (service.getDevice().equals(device)) { |
| 852 | result.add(service); |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | return result; |
| 857 | } |
| 858 | |
| 859 | /** |
| 860 | * Returns a {@link BluetoothGattService}, if the requested UUID is |
| 861 | * supported by the remote device. |
| 862 | * |
| 863 | * <p>This function requires that service discovery has been completed |
| 864 | * for the given device. |
| 865 | * |
| 866 | * <p>If multiple instances of the same service (as identified by UUID) |
| 867 | * exist, the first instance of the service is returned. |
| 868 | * |
| 869 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 870 | * |
| 871 | * @param device Remote device |
| 872 | * @param uuid UUID of the requested service |
| 873 | * @return BluetoothGattService if supported, or null if the requested |
| 874 | * service is not offered by the remote device. |
| 875 | */ |
| 876 | public BluetoothGattService getService(BluetoothDevice device, UUID uuid) { |
| 877 | for (BluetoothGattService service : mServices) { |
| 878 | if (service.getDevice().equals(device) && |
| 879 | service.getUuid().equals(uuid)) { |
| 880 | return service; |
| 881 | } |
| 882 | } |
| 883 | |
| 884 | return null; |
| 885 | } |
| 886 | |
| 887 | /** |
| 888 | * Reads the requested characteristic from the associated remote device. |
| 889 | * |
| 890 | * <p>This is an asynchronous operation. The result of the read operation |
| 891 | * is reported by the {@link BluetoothGattCallback#onCharacteristicRead} |
| 892 | * callback. |
| 893 | * |
| 894 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 895 | * |
| 896 | * @param characteristic Characteristic to read from the remote device |
| 897 | * @return true, if the read operation was initiated successfully |
| 898 | */ |
| 899 | public boolean readCharacteristic(BluetoothGattCharacteristic characteristic) { |
| 900 | if ((characteristic.getProperties() & |
| 901 | BluetoothGattCharacteristic.PROPERTY_READ) == 0) return false; |
| 902 | |
| 903 | if (DBG) Log.d(TAG, "readCharacteristic() - uuid: " + characteristic.getUuid()); |
| 904 | if (mService == null || mClientIf == 0) return false; |
| 905 | |
| 906 | BluetoothGattService service = characteristic.getService(); |
| 907 | if (service == null) return false; |
| 908 | |
| 909 | BluetoothDevice device = service.getDevice(); |
| 910 | if (device == null) return false; |
| 911 | |
| 912 | try { |
| 913 | mService.readCharacteristic(mClientIf, device.getAddress(), |
| 914 | service.getType(), service.getInstanceId(), |
| 915 | new ParcelUuid(service.getUuid()), characteristic.getInstanceId(), |
| 916 | new ParcelUuid(characteristic.getUuid()), AUTHENTICATION_NONE); |
| 917 | } catch (RemoteException e) { |
| 918 | Log.e(TAG,"",e); |
| 919 | return false; |
| 920 | } |
| 921 | |
| 922 | return true; |
| 923 | } |
| 924 | |
| 925 | /** |
| 926 | * Writes a given characteristic and it's values to the associated remote |
| 927 | * device. |
| 928 | * |
| 929 | * <p>Once the write operation has been completed, the |
| 930 | * {@link BluetoothGattCallback#onCharacteristicWrite} callback is invoked, |
| 931 | * reporting the result of the operation. |
| 932 | * |
| 933 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 934 | * |
| 935 | * @param characteristic Characteristic to write on the remote device |
| 936 | * @return true, if the write operation was initiated successfully |
| 937 | */ |
| 938 | public boolean writeCharacteristic(BluetoothGattCharacteristic characteristic) { |
| 939 | if ((characteristic.getProperties() & BluetoothGattCharacteristic.PROPERTY_WRITE) == 0 |
| 940 | && (characteristic.getProperties() & |
| 941 | BluetoothGattCharacteristic.PROPERTY_WRITE_NO_RESPONSE) == 0) return false; |
| 942 | |
| 943 | if (DBG) Log.d(TAG, "writeCharacteristic() - uuid: " + characteristic.getUuid()); |
| 944 | if (mService == null || mClientIf == 0) return false; |
| 945 | |
| 946 | BluetoothGattService service = characteristic.getService(); |
| 947 | if (service == null) return false; |
| 948 | |
| 949 | BluetoothDevice device = service.getDevice(); |
| 950 | if (device == null) return false; |
| 951 | |
| 952 | try { |
| 953 | mService.writeCharacteristic(mClientIf, device.getAddress(), |
| 954 | service.getType(), service.getInstanceId(), |
| 955 | new ParcelUuid(service.getUuid()), characteristic.getInstanceId(), |
| 956 | new ParcelUuid(characteristic.getUuid()), |
| 957 | characteristic.getWriteType(), AUTHENTICATION_NONE, |
| 958 | characteristic.getValue()); |
| 959 | } catch (RemoteException e) { |
| 960 | Log.e(TAG,"",e); |
| 961 | return false; |
| 962 | } |
| 963 | |
| 964 | return true; |
| 965 | } |
| 966 | |
| 967 | /** |
| 968 | * Reads the value for a given descriptor from the associated remote device. |
| 969 | * |
| 970 | * <p>Once the read operation has been completed, the |
| 971 | * {@link BluetoothGattCallback#onDescriptorRead} callback is |
| 972 | * triggered, signaling the result of the operation. |
| 973 | * |
| 974 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 975 | * |
| 976 | * @param descriptor Descriptor value to read from the remote device |
| 977 | * @return true, if the read operation was initiated successfully |
| 978 | */ |
| 979 | public boolean readDescriptor(BluetoothGattDescriptor descriptor) { |
| 980 | if (DBG) Log.d(TAG, "readDescriptor() - uuid: " + descriptor.getUuid()); |
| 981 | if (mService == null || mClientIf == 0) return false; |
| 982 | |
| 983 | BluetoothGattCharacteristic characteristic = descriptor.getCharacteristic(); |
| 984 | if (characteristic == null) return false; |
| 985 | |
| 986 | BluetoothGattService service = characteristic.getService(); |
| 987 | if (service == null) return false; |
| 988 | |
| 989 | BluetoothDevice device = service.getDevice(); |
| 990 | if (device == null) return false; |
| 991 | |
| 992 | try { |
| 993 | mService.readDescriptor(mClientIf, device.getAddress(), |
| 994 | service.getType(), service.getInstanceId(), |
| 995 | new ParcelUuid(service.getUuid()), characteristic.getInstanceId(), |
| 996 | new ParcelUuid(characteristic.getUuid()), |
| 997 | new ParcelUuid(descriptor.getUuid()), AUTHENTICATION_NONE); |
| 998 | } catch (RemoteException e) { |
| 999 | Log.e(TAG,"",e); |
| 1000 | return false; |
| 1001 | } |
| 1002 | |
| 1003 | return true; |
| 1004 | } |
| 1005 | |
| 1006 | /** |
| 1007 | * Write the value of a given descriptor to the associated remote device. |
| 1008 | * |
| 1009 | * <p>A {@link BluetoothGattCallback#onDescriptorWrite} callback is |
| 1010 | * triggered to report the result of the write operation. |
| 1011 | * |
| 1012 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 1013 | * |
| 1014 | * @param descriptor Descriptor to write to the associated remote device |
| 1015 | * @return true, if the write operation was initiated successfully |
| 1016 | */ |
| 1017 | public boolean writeDescriptor(BluetoothGattDescriptor descriptor) { |
| 1018 | if (DBG) Log.d(TAG, "writeDescriptor() - uuid: " + descriptor.getUuid()); |
| 1019 | if (mService == null || mClientIf == 0) return false; |
| 1020 | |
| 1021 | BluetoothGattCharacteristic characteristic = descriptor.getCharacteristic(); |
| 1022 | if (characteristic == null) return false; |
| 1023 | |
| 1024 | BluetoothGattService service = characteristic.getService(); |
| 1025 | if (service == null) return false; |
| 1026 | |
| 1027 | BluetoothDevice device = service.getDevice(); |
| 1028 | if (device == null) return false; |
| 1029 | |
| 1030 | try { |
| 1031 | mService.writeDescriptor(mClientIf, device.getAddress(), |
| 1032 | service.getType(), service.getInstanceId(), |
| 1033 | new ParcelUuid(service.getUuid()), characteristic.getInstanceId(), |
| 1034 | new ParcelUuid(characteristic.getUuid()), |
| 1035 | new ParcelUuid(descriptor.getUuid()), |
| 1036 | characteristic.getWriteType(), AUTHENTICATION_NONE, |
| 1037 | descriptor.getValue()); |
| 1038 | } catch (RemoteException e) { |
| 1039 | Log.e(TAG,"",e); |
| 1040 | return false; |
| 1041 | } |
| 1042 | |
| 1043 | return true; |
| 1044 | } |
| 1045 | |
| 1046 | /** |
| 1047 | * Initiates a reliable write transaction for a given remote device. |
| 1048 | * |
| 1049 | * <p>Once a reliable write transaction has been initiated, all calls |
| 1050 | * to {@link #writeCharacteristic} are sent to the remote device for |
| 1051 | * verification and queued up for atomic execution. The application will |
| 1052 | * receive an {@link BluetoothGattCallback#onCharacteristicWrite} callback |
| 1053 | * in response to every {@link #writeCharacteristic} call and is responsible |
| 1054 | * for verifying if the value has been transmitted accurately. |
| 1055 | * |
| 1056 | * <p>After all characteristics have been queued up and verified, |
| 1057 | * {@link #executeReliableWrite} will execute all writes. If a characteristic |
| 1058 | * was not written correctly, calling {@link #abortReliableWrite} will |
| 1059 | * cancel the current transaction without commiting any values on the |
| 1060 | * remote device. |
| 1061 | * |
| 1062 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 1063 | * |
| 1064 | * @param device Remote device |
| 1065 | * @return true, if the reliable write transaction has been initiated |
| 1066 | */ |
| 1067 | public boolean beginReliableWrite(BluetoothDevice device) { |
| 1068 | if (DBG) Log.d(TAG, "beginReliableWrite() - device: " + device.getAddress()); |
| 1069 | if (mService == null || mClientIf == 0) return false; |
| 1070 | |
| 1071 | try { |
| 1072 | mService.beginReliableWrite(mClientIf, device.getAddress()); |
| 1073 | } catch (RemoteException e) { |
| 1074 | Log.e(TAG,"",e); |
| 1075 | return false; |
| 1076 | } |
| 1077 | |
| 1078 | return true; |
| 1079 | } |
| 1080 | |
| 1081 | /** |
| 1082 | * Executes a reliable write transaction for a given remote device. |
| 1083 | * |
| 1084 | * <p>This function will commit all queued up characteristic write |
| 1085 | * operations for a given remote device. |
| 1086 | * |
| 1087 | * <p>A {@link BluetoothGattCallback#onReliableWriteCompleted} callback is |
| 1088 | * invoked to indicate whether the transaction has been executed correctly. |
| 1089 | * |
| 1090 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 1091 | * |
| 1092 | * @param device Remote device |
| 1093 | * @return true, if the request to execute the transaction has been sent |
| 1094 | */ |
| 1095 | public boolean executeReliableWrite(BluetoothDevice device) { |
| 1096 | if (DBG) Log.d(TAG, "executeReliableWrite() - device: " + device.getAddress()); |
| 1097 | if (mService == null || mClientIf == 0) return false; |
| 1098 | |
| 1099 | try { |
| 1100 | mService.endReliableWrite(mClientIf, device.getAddress(), true); |
| 1101 | } catch (RemoteException e) { |
| 1102 | Log.e(TAG,"",e); |
| 1103 | return false; |
| 1104 | } |
| 1105 | |
| 1106 | return true; |
| 1107 | } |
| 1108 | |
| 1109 | /** |
| 1110 | * Cancels a reliable write transaction for a given device. |
| 1111 | * |
| 1112 | * <p>Calling this function will discard all queued characteristic write |
| 1113 | * operations for a given remote device. |
| 1114 | * |
| 1115 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 1116 | * |
| 1117 | * @param device Remote device |
| 1118 | */ |
| 1119 | public void abortReliableWrite(BluetoothDevice device) { |
| 1120 | if (DBG) Log.d(TAG, "abortReliableWrite() - device: " + device.getAddress()); |
| 1121 | if (mService == null || mClientIf == 0) return; |
| 1122 | |
| 1123 | try { |
| 1124 | mService.endReliableWrite(mClientIf, device.getAddress(), false); |
| 1125 | } catch (RemoteException e) { |
| 1126 | Log.e(TAG,"",e); |
| 1127 | } |
| 1128 | } |
| 1129 | |
| 1130 | /** |
| 1131 | * Enable or disable notifications/indications for a given characteristic. |
| 1132 | * |
| 1133 | * <p>Once notifications are enabled for a characteristic, a |
| 1134 | * {@link BluetoothGattCallback#onCharacteristicChanged} callback will be |
| 1135 | * triggered if the remote device indicates that the given characteristic |
| 1136 | * has changed. |
| 1137 | * |
| 1138 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 1139 | * |
| 1140 | * @param characteristic The characteristic for which to enable notifications |
| 1141 | * @param enable Set to true to enable notifications/indications |
| 1142 | * @return true, if the requested notification status was set successfully |
| 1143 | */ |
| 1144 | public boolean setCharacteristicNotification(BluetoothGattCharacteristic characteristic, |
| 1145 | boolean enable) { |
| 1146 | if (DBG) Log.d(TAG, "setCharacteristicNotification() - uuid: " + characteristic.getUuid() |
| 1147 | + " enable: " + enable); |
| 1148 | if (mService == null || mClientIf == 0) return false; |
| 1149 | |
| 1150 | BluetoothGattService service = characteristic.getService(); |
| 1151 | if (service == null) return false; |
| 1152 | |
| 1153 | BluetoothDevice device = service.getDevice(); |
| 1154 | if (device == null) return false; |
| 1155 | |
| 1156 | try { |
| 1157 | mService.registerForNotification(mClientIf, device.getAddress(), |
| 1158 | service.getType(), service.getInstanceId(), |
| 1159 | new ParcelUuid(service.getUuid()), characteristic.getInstanceId(), |
| 1160 | new ParcelUuid(characteristic.getUuid()), |
| 1161 | enable); |
| 1162 | } catch (RemoteException e) { |
| 1163 | Log.e(TAG,"",e); |
| 1164 | return false; |
| 1165 | } |
| 1166 | |
| 1167 | return true; |
| 1168 | } |
| 1169 | |
| 1170 | /** |
| 1171 | * Clears the internal cache and forces a refresh of the services from the |
| 1172 | * remote device. |
| 1173 | * @hide |
| 1174 | */ |
| 1175 | public boolean refresh(BluetoothDevice device) { |
| 1176 | if (DBG) Log.d(TAG, "refresh() - device: " + device.getAddress()); |
| 1177 | if (mService == null || mClientIf == 0) return false; |
| 1178 | |
| 1179 | try { |
| 1180 | mService.refreshDevice(mClientIf, device.getAddress()); |
| 1181 | } catch (RemoteException e) { |
| 1182 | Log.e(TAG,"",e); |
| 1183 | return false; |
| 1184 | } |
| 1185 | |
| 1186 | return true; |
| 1187 | } |
| 1188 | |
| 1189 | /** |
| 1190 | * Read the RSSI for a connected remote device. |
| 1191 | * |
| 1192 | * <p>The {@link BluetoothGattCallback#onReadRemoteRssi} callback will be |
| 1193 | * invoked when the RSSI value has been read. |
| 1194 | * |
| 1195 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 1196 | * |
| 1197 | * @param device Remote device |
| 1198 | * @return true, if the RSSI value has been requested successfully |
| 1199 | */ |
| 1200 | public boolean readRemoteRssi(BluetoothDevice device) { |
| 1201 | if (DBG) Log.d(TAG, "readRssi() - device: " + device.getAddress()); |
| 1202 | if (mService == null || mClientIf == 0) return false; |
| 1203 | |
| 1204 | try { |
| 1205 | mService.readRemoteRssi(mClientIf, device.getAddress()); |
| 1206 | } catch (RemoteException e) { |
| 1207 | Log.e(TAG,"",e); |
| 1208 | return false; |
| 1209 | } |
| 1210 | |
| 1211 | return true; |
| 1212 | } |
| 1213 | |
| 1214 | /** |
| 1215 | * Get the current connection state of the profile. |
| 1216 | * |
| 1217 | * <p>This is not specific to any application configuration but represents |
| 1218 | * the connection state of the local Bluetooth adapter for this profile. |
| 1219 | * This can be used by applications like status bar which would just like |
| 1220 | * to know the state of the local adapter. |
| 1221 | * |
| 1222 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 1223 | * |
| 1224 | * @param device Remote bluetooth device. |
| 1225 | * @return State of the profile connection. One of |
| 1226 | * {@link #STATE_CONNECTED}, {@link #STATE_CONNECTING}, |
| 1227 | * {@link #STATE_DISCONNECTED}, {@link #STATE_DISCONNECTING} |
| 1228 | */ |
| 1229 | @Override |
| 1230 | public int getConnectionState(BluetoothDevice device) { |
| 1231 | if (DBG) Log.d(TAG,"getConnectionState()"); |
| 1232 | if (mService == null) return STATE_DISCONNECTED; |
| 1233 | |
| 1234 | List<BluetoothDevice> connectedDevices = getConnectedDevices(); |
| 1235 | for(BluetoothDevice connectedDevice : connectedDevices) { |
| 1236 | if (device.equals(connectedDevice)) { |
| 1237 | return STATE_CONNECTED; |
| 1238 | } |
| 1239 | } |
| 1240 | |
| 1241 | return STATE_DISCONNECTED; |
| 1242 | } |
| 1243 | |
| 1244 | /** |
| 1245 | * Get connected devices for the Gatt profile. |
| 1246 | * |
| 1247 | * <p> Return the set of devices which are in state {@link #STATE_CONNECTED} |
| 1248 | * |
| 1249 | * <p>This is not specific to any application configuration but represents |
| 1250 | * the connection state of the local Bluetooth adapter for this profile. |
| 1251 | * This can be used by applications like status bar which would just like |
| 1252 | * to know the state of the local adapter. |
| 1253 | * |
| 1254 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 1255 | * |
| 1256 | * @return List of devices. The list will be empty on error. |
| 1257 | */ |
| 1258 | @Override |
| 1259 | public List<BluetoothDevice> getConnectedDevices() { |
| 1260 | if (DBG) Log.d(TAG,"getConnectedDevices"); |
| 1261 | |
| 1262 | List<BluetoothDevice> connectedDevices = new ArrayList<BluetoothDevice>(); |
| 1263 | if (mService == null) return connectedDevices; |
| 1264 | |
| 1265 | try { |
| 1266 | connectedDevices = mService.getDevicesMatchingConnectionStates( |
| 1267 | new int[] { BluetoothProfile.STATE_CONNECTED }); |
| 1268 | } catch (RemoteException e) { |
| 1269 | Log.e(TAG,"",e); |
| 1270 | } |
| 1271 | |
| 1272 | return connectedDevices; |
| 1273 | } |
| 1274 | |
| 1275 | /** |
| 1276 | * Get a list of devices that match any of the given connection |
| 1277 | * states. |
| 1278 | * |
| 1279 | * <p> If none of the devices match any of the given states, |
| 1280 | * an empty list will be returned. |
| 1281 | * |
| 1282 | * <p>This is not specific to any application configuration but represents |
| 1283 | * the connection state of the local Bluetooth adapter for this profile. |
| 1284 | * This can be used by applications like status bar which would just like |
| 1285 | * to know the state of the local adapter. |
| 1286 | * |
| 1287 | * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. |
| 1288 | * |
| 1289 | * @param states Array of states. States can be one of |
| 1290 | * {@link #STATE_CONNECTED}, {@link #STATE_CONNECTING}, |
| 1291 | * {@link #STATE_DISCONNECTED}, {@link #STATE_DISCONNECTING}, |
| 1292 | * @return List of devices. The list will be empty on error. |
| 1293 | */ |
| 1294 | @Override |
| 1295 | public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| 1296 | if (DBG) Log.d(TAG,"getDevicesMatchingConnectionStates"); |
| 1297 | |
| 1298 | List<BluetoothDevice> devices = new ArrayList<BluetoothDevice>(); |
| 1299 | if (mService == null) return devices; |
| 1300 | |
| 1301 | try { |
| 1302 | devices = mService.getDevicesMatchingConnectionStates(states); |
| 1303 | } catch (RemoteException e) { |
| 1304 | Log.e(TAG,"",e); |
| 1305 | } |
| 1306 | |
| 1307 | return devices; |
| 1308 | } |
| 1309 | } |