Joseph Pirozzo | cfa8a64 | 2016-03-04 13:02:54 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.bluetooth; |
| 18 | |
| 19 | import java.util.List; |
| 20 | import java.util.ArrayList; |
| 21 | import android.content.ComponentName; |
| 22 | import android.content.Context; |
| 23 | import android.content.Intent; |
| 24 | import android.content.ServiceConnection; |
| 25 | import android.os.RemoteException; |
| 26 | import android.os.IBinder; |
| 27 | import android.util.Log; |
| 28 | |
| 29 | /** |
| 30 | * This class provides the APIs to control the Bluetooth PBAP Client Profile. |
| 31 | *@hide |
| 32 | */ |
| 33 | public final class BluetoothPbapClient implements BluetoothProfile { |
| 34 | |
| 35 | private static final String TAG = "BluetoothPbapClient"; |
| 36 | private static final boolean DBG = false; |
| 37 | private static final boolean VDBG = false; |
| 38 | |
| 39 | public static final String ACTION_CONNECTION_STATE_CHANGED = |
| 40 | "android.bluetooth.pbap.profile.action.CONNECTION_STATE_CHANGED"; |
| 41 | |
| 42 | private IBluetoothPbapClient mService; |
Joseph Pirozzo | cfa8a64 | 2016-03-04 13:02:54 -0800 | [diff] [blame] | 43 | private final Context mContext; |
| 44 | private ServiceListener mServiceListener; |
| 45 | private BluetoothAdapter mAdapter; |
| 46 | |
| 47 | /** There was an error trying to obtain the state */ |
| 48 | public static final int STATE_ERROR = -1; |
| 49 | |
| 50 | public static final int RESULT_FAILURE = 0; |
| 51 | public static final int RESULT_SUCCESS = 1; |
| 52 | /** Connection canceled before completion. */ |
| 53 | public static final int RESULT_CANCELED = 2; |
| 54 | |
| 55 | final private IBluetoothStateChangeCallback mBluetoothStateChangeCallback = |
| 56 | new IBluetoothStateChangeCallback.Stub() { |
| 57 | public void onBluetoothStateChange(boolean up) { |
| 58 | if (DBG) { |
| 59 | Log.d(TAG, "onBluetoothStateChange: PBAP CLIENT up=" + up); |
| 60 | } |
| 61 | if (!up) { |
| 62 | if (VDBG) { |
| 63 | Log.d(TAG,"Unbinding service..."); |
| 64 | } |
| 65 | synchronized (mConnection) { |
| 66 | try { |
| 67 | mService = null; |
| 68 | mContext.unbindService(mConnection); |
| 69 | } catch (Exception re) { |
| 70 | Log.e(TAG,"",re); |
| 71 | } |
| 72 | } |
| 73 | } else { |
| 74 | synchronized (mConnection) { |
| 75 | try { |
| 76 | if (mService == null) { |
| 77 | if (VDBG) { |
| 78 | Log.d(TAG,"Binding service..."); |
| 79 | } |
| 80 | doBind(); |
| 81 | } |
| 82 | } catch (Exception re) { |
| 83 | Log.e(TAG,"",re); |
| 84 | } |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | }; |
| 89 | |
| 90 | /** |
| 91 | * Create a BluetoothPbapClient proxy object. |
| 92 | */ |
| 93 | BluetoothPbapClient(Context context, ServiceListener l) { |
| 94 | if (DBG) { |
| 95 | Log.d(TAG, "Create BluetoothPbapClient proxy object"); |
| 96 | } |
| 97 | mContext = context; |
| 98 | mServiceListener = l; |
| 99 | mAdapter = BluetoothAdapter.getDefaultAdapter(); |
| 100 | IBluetoothManager mgr = mAdapter.getBluetoothManager(); |
| 101 | if (mgr != null) { |
| 102 | try { |
| 103 | mgr.registerStateChangeCallback(mBluetoothStateChangeCallback); |
| 104 | } catch (RemoteException e) { |
| 105 | Log.e(TAG,"",e); |
| 106 | } |
| 107 | } |
| 108 | doBind(); |
| 109 | } |
| 110 | |
| 111 | private boolean doBind() { |
| 112 | Intent intent = new Intent(IBluetoothPbapClient.class.getName()); |
| 113 | ComponentName comp = intent.resolveSystemService(mContext.getPackageManager(), 0); |
| 114 | intent.setComponent(comp); |
| 115 | if (comp == null || !mContext.bindServiceAsUser(intent, mConnection, 0, |
| 116 | android.os.Process.myUserHandle())) { |
| 117 | Log.e(TAG, "Could not bind to Bluetooth PBAP Client Service with " + intent); |
| 118 | return false; |
| 119 | } |
| 120 | return true; |
| 121 | } |
| 122 | |
| 123 | protected void finalize() throws Throwable { |
| 124 | try { |
| 125 | close(); |
| 126 | } finally { |
| 127 | super.finalize(); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Close the connection to the backing service. |
| 133 | * Other public functions of BluetoothPbapClient will return default error |
| 134 | * results once close() has been called. Multiple invocations of close() |
| 135 | * are ok. |
| 136 | */ |
| 137 | public synchronized void close() { |
| 138 | IBluetoothManager mgr = mAdapter.getBluetoothManager(); |
| 139 | if (mgr != null) { |
| 140 | try { |
| 141 | mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback); |
| 142 | } catch (Exception e) { |
| 143 | Log.e(TAG,"",e); |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | synchronized (mConnection) { |
| 148 | if (mService != null) { |
| 149 | try { |
| 150 | mService = null; |
| 151 | mContext.unbindService(mConnection); |
| 152 | } catch (Exception re) { |
| 153 | Log.e(TAG,"",re); |
| 154 | } |
| 155 | } |
| 156 | } |
| 157 | mServiceListener = null; |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * Initiate connection. |
| 162 | * Upon successful connection to remote PBAP server the Client will |
| 163 | * attempt to automatically download the users phonebook and call log. |
| 164 | * |
| 165 | * @param device a remote device we want connect to |
| 166 | * @return <code>true</code> if command has been issued successfully; |
| 167 | * <code>false</code> otherwise; |
| 168 | */ |
| 169 | public boolean connect(BluetoothDevice device) { |
| 170 | if (DBG) { |
| 171 | log("connect(" + device + ") for PBAP Client."); |
| 172 | } |
| 173 | if (mService != null && isEnabled() && isValidDevice(device)) { |
| 174 | try { |
Joseph Pirozzo | cfa8a64 | 2016-03-04 13:02:54 -0800 | [diff] [blame] | 175 | return mService.connect(device); |
| 176 | } catch (RemoteException e) { |
| 177 | Log.e(TAG, Log.getStackTraceString(new Throwable())); |
| 178 | return false; |
| 179 | } |
| 180 | } |
| 181 | if (mService == null) { |
| 182 | Log.w(TAG, "Proxy not attached to service"); |
| 183 | } |
| 184 | return false; |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Initiate disconnect. |
| 189 | * |
| 190 | * @param device Remote Bluetooth Device |
| 191 | * @return false on error, |
| 192 | * true otherwise |
| 193 | */ |
Joseph Pirozzo | 563c700 | 2016-03-21 15:49:48 -0700 | [diff] [blame] | 194 | public boolean disconnect(BluetoothDevice device) { |
Joseph Pirozzo | cfa8a64 | 2016-03-04 13:02:54 -0800 | [diff] [blame] | 195 | if (DBG) { |
Joseph Pirozzo | 563c700 | 2016-03-21 15:49:48 -0700 | [diff] [blame] | 196 | log("disconnect(" + device + ")" + new Exception() ); |
Joseph Pirozzo | cfa8a64 | 2016-03-04 13:02:54 -0800 | [diff] [blame] | 197 | } |
Joseph Pirozzo | 563c700 | 2016-03-21 15:49:48 -0700 | [diff] [blame] | 198 | if (mService != null && isEnabled() && isValidDevice(device)) { |
Joseph Pirozzo | cfa8a64 | 2016-03-04 13:02:54 -0800 | [diff] [blame] | 199 | try { |
Joseph Pirozzo | 563c700 | 2016-03-21 15:49:48 -0700 | [diff] [blame] | 200 | mService.disconnect(device); |
Joseph Pirozzo | cfa8a64 | 2016-03-04 13:02:54 -0800 | [diff] [blame] | 201 | return true; |
| 202 | } catch (RemoteException e) { |
| 203 | Log.e(TAG, Log.getStackTraceString(new Throwable())); |
| 204 | return false; |
| 205 | } |
| 206 | } |
| 207 | if (mService == null) { |
| 208 | Log.w(TAG, "Proxy not attached to service"); |
| 209 | } |
| 210 | return false; |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * Get the list of connected devices. |
| 215 | * Currently at most one. |
| 216 | * |
| 217 | * @return list of connected devices |
| 218 | */ |
| 219 | @Override |
| 220 | public List<BluetoothDevice> getConnectedDevices() { |
| 221 | if (DBG) { |
| 222 | log("getConnectedDevices()"); |
| 223 | } |
| 224 | if (mService != null && isEnabled()) { |
| 225 | try { |
| 226 | return mService.getConnectedDevices(); |
| 227 | } catch (RemoteException e) { |
| 228 | Log.e(TAG, Log.getStackTraceString(new Throwable())); |
| 229 | return new ArrayList<BluetoothDevice>(); |
| 230 | } |
| 231 | } |
| 232 | if (mService == null) { |
| 233 | Log.w(TAG, "Proxy not attached to service"); |
| 234 | } |
| 235 | return new ArrayList<BluetoothDevice>(); |
| 236 | } |
| 237 | |
| 238 | /** |
| 239 | * Get the list of devices matching specified states. Currently at most one. |
| 240 | * |
| 241 | * @return list of matching devices |
| 242 | */ |
| 243 | @Override |
| 244 | public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| 245 | if (DBG) { |
| 246 | log("getDevicesMatchingStates()"); |
| 247 | } |
| 248 | if (mService != null && isEnabled()) { |
| 249 | try { |
| 250 | return mService.getDevicesMatchingConnectionStates(states); |
| 251 | } catch (RemoteException e) { |
| 252 | Log.e(TAG, Log.getStackTraceString(new Throwable())); |
| 253 | return new ArrayList<BluetoothDevice>(); |
| 254 | } |
| 255 | } |
| 256 | if (mService == null) { |
| 257 | Log.w(TAG, "Proxy not attached to service"); |
| 258 | } |
| 259 | return new ArrayList<BluetoothDevice>(); |
| 260 | } |
| 261 | |
| 262 | /** |
| 263 | * Get connection state of device |
| 264 | * |
| 265 | * @return device connection state |
| 266 | */ |
| 267 | @Override |
| 268 | public int getConnectionState(BluetoothDevice device) { |
| 269 | if (DBG) { |
| 270 | log("getConnectionState(" + device + ")"); |
| 271 | } |
| 272 | if (mService != null && isEnabled() && isValidDevice(device)) { |
| 273 | try { |
| 274 | return mService.getConnectionState(device); |
| 275 | } catch (RemoteException e) { |
| 276 | Log.e(TAG, Log.getStackTraceString(new Throwable())); |
| 277 | return BluetoothProfile.STATE_DISCONNECTED; |
| 278 | } |
| 279 | } |
| 280 | if (mService == null) { |
| 281 | Log.w(TAG, "Proxy not attached to service"); |
| 282 | } |
| 283 | return BluetoothProfile.STATE_DISCONNECTED; |
| 284 | } |
| 285 | |
| 286 | private final ServiceConnection mConnection = new ServiceConnection() { |
| 287 | public void onServiceConnected(ComponentName className, IBinder service) { |
| 288 | if (DBG) { |
| 289 | log("Proxy object connected"); |
| 290 | } |
| 291 | mService = IBluetoothPbapClient.Stub.asInterface(service); |
| 292 | if (mServiceListener != null) { |
| 293 | mServiceListener.onServiceConnected(BluetoothProfile.PBAP_CLIENT, BluetoothPbapClient.this); |
| 294 | } |
| 295 | } |
| 296 | public void onServiceDisconnected(ComponentName className) { |
| 297 | if (DBG) { |
| 298 | log("Proxy object disconnected"); |
| 299 | } |
| 300 | mService = null; |
| 301 | if (mServiceListener != null) { |
| 302 | mServiceListener.onServiceDisconnected(BluetoothProfile.PBAP_CLIENT); |
| 303 | } |
| 304 | } |
| 305 | }; |
| 306 | |
| 307 | private static void log(String msg) { |
| 308 | Log.d(TAG, msg); |
| 309 | } |
| 310 | |
| 311 | private boolean isEnabled() { |
| 312 | BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); |
| 313 | if (adapter != null && adapter.getState() == BluetoothAdapter.STATE_ON) { |
| 314 | return true; |
| 315 | } |
| 316 | log("Bluetooth is Not enabled"); |
| 317 | return false; |
| 318 | } |
| 319 | |
| 320 | private boolean isValidDevice(BluetoothDevice device) { |
| 321 | if (device == null) { |
| 322 | return false; |
| 323 | } |
| 324 | if (BluetoothAdapter.checkBluetoothAddress(device.getAddress())) { |
| 325 | return true; |
| 326 | } |
| 327 | return false; |
| 328 | } |
Joseph Pirozzo | 563c700 | 2016-03-21 15:49:48 -0700 | [diff] [blame] | 329 | |
| 330 | /** |
| 331 | * Set priority of the profile |
| 332 | * |
| 333 | * <p> The device should already be paired. |
| 334 | * Priority can be one of {@link #PRIORITY_ON} or |
| 335 | * {@link #PRIORITY_OFF}, |
| 336 | * |
| 337 | * @param device Paired bluetooth device |
| 338 | * @param priority |
| 339 | * @return true if priority is set, false on error |
| 340 | */ |
| 341 | public boolean setPriority(BluetoothDevice device, int priority) { |
| 342 | if (DBG) { |
| 343 | log("setPriority(" + device + ", " + priority + ")"); |
| 344 | } |
| 345 | if (mService != null && isEnabled() && |
| 346 | isValidDevice(device)) { |
| 347 | if (priority != BluetoothProfile.PRIORITY_OFF && |
| 348 | priority != BluetoothProfile.PRIORITY_ON) { |
| 349 | return false; |
| 350 | } |
| 351 | try { |
| 352 | return mService.setPriority(device, priority); |
| 353 | } catch (RemoteException e) { |
| 354 | Log.e(TAG, Log.getStackTraceString(new Throwable())); |
| 355 | return false; |
| 356 | } |
| 357 | } |
| 358 | if (mService == null) { |
| 359 | Log.w(TAG, "Proxy not attached to service"); |
| 360 | } |
| 361 | return false; |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Get the priority of the profile. |
| 366 | * |
| 367 | * <p> The priority can be any of: |
| 368 | * {@link #PRIORITY_AUTO_CONNECT}, {@link #PRIORITY_OFF}, |
| 369 | * {@link #PRIORITY_ON}, {@link #PRIORITY_UNDEFINED} |
| 370 | * |
| 371 | * @param device Bluetooth device |
| 372 | * @return priority of the device |
| 373 | */ |
| 374 | public int getPriority(BluetoothDevice device) { |
| 375 | if (VDBG) { |
| 376 | log("getPriority(" + device + ")"); |
| 377 | } |
| 378 | if (mService != null && isEnabled() && isValidDevice(device)) { |
| 379 | try { |
| 380 | return mService.getPriority(device); |
| 381 | } catch (RemoteException e) { |
| 382 | Log.e(TAG, Log.getStackTraceString(new Throwable())); |
| 383 | return PRIORITY_OFF; |
| 384 | } |
| 385 | } |
| 386 | if (mService == null) { |
| 387 | Log.w(TAG, "Proxy not attached to service"); |
| 388 | } |
| 389 | return PRIORITY_OFF; |
| 390 | } |
Joseph Pirozzo | cfa8a64 | 2016-03-04 13:02:54 -0800 | [diff] [blame] | 391 | } |