| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.bluetooth; |
| |
| import android.annotation.Nullable; |
| import android.annotation.SdkConstant; |
| import android.annotation.SuppressLint; |
| import android.annotation.SystemApi; |
| import android.compat.annotation.UnsupportedAppUsage; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.ServiceConnection; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.os.UserHandle; |
| import android.util.Log; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * The Android Bluetooth API is not finalized, and *will* change. Use at your |
| * own risk. |
| * |
| * Public API for controlling the Bluetooth Pbap Service. This includes |
| * Bluetooth Phone book Access profile. |
| * BluetoothPbap is a proxy object for controlling the Bluetooth Pbap |
| * Service via IPC. |
| * |
| * Creating a BluetoothPbap object will create a binding with the |
| * BluetoothPbap service. Users of this object should call close() when they |
| * are finished with the BluetoothPbap, so that this proxy object can unbind |
| * from the service. |
| * |
| * This BluetoothPbap object is not immediately bound to the |
| * BluetoothPbap service. Use the ServiceListener interface to obtain a |
| * notification when it is bound, this is especially important if you wish to |
| * immediately call methods on BluetoothPbap after construction. |
| * |
| * Android only supports one connected Bluetooth Pce at a time. |
| * |
| * @hide |
| */ |
| @SystemApi |
| public class BluetoothPbap implements BluetoothProfile { |
| |
| private static final String TAG = "BluetoothPbap"; |
| private static final boolean DBG = false; |
| |
| /** |
| * Intent used to broadcast the change in connection state of the PBAP |
| * profile. |
| * |
| * <p>This intent will have 3 extras: |
| * <ul> |
| * <li> {@link BluetoothProfile#EXTRA_STATE} - The current state of the profile. </li> |
| * <li> {@link BluetoothProfile#EXTRA_PREVIOUS_STATE}- The previous state of the profile. </li> |
| * <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. </li> |
| * </ul> |
| * <p>{@link BluetoothProfile#EXTRA_STATE} or {@link BluetoothProfile#EXTRA_PREVIOUS_STATE} |
| * can be any of {@link BluetoothProfile#STATE_DISCONNECTED}, |
| * {@link BluetoothProfile#STATE_CONNECTING}, {@link BluetoothProfile#STATE_CONNECTED}, |
| * {@link BluetoothProfile#STATE_DISCONNECTING}. |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission to |
| * receive. |
| * |
| * @hide |
| */ |
| @SuppressLint("ActionValue") |
| @SystemApi |
| @SdkConstant(SdkConstant.SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String ACTION_CONNECTION_STATE_CHANGED = |
| "android.bluetooth.pbap.profile.action.CONNECTION_STATE_CHANGED"; |
| |
| private volatile IBluetoothPbap mService; |
| private final Context mContext; |
| private ServiceListener mServiceListener; |
| private BluetoothAdapter mAdapter; |
| |
| /** @hide */ |
| public static final int RESULT_FAILURE = 0; |
| /** @hide */ |
| public static final int RESULT_SUCCESS = 1; |
| /** |
| * Connection canceled before completion. |
| * |
| * @hide |
| */ |
| public static final int RESULT_CANCELED = 2; |
| |
| private final IBluetoothStateChangeCallback mBluetoothStateChangeCallback = |
| new IBluetoothStateChangeCallback.Stub() { |
| public void onBluetoothStateChange(boolean up) { |
| log("onBluetoothStateChange: up=" + up); |
| if (!up) { |
| doUnbind(); |
| } else { |
| doBind(); |
| } |
| } |
| }; |
| |
| /** |
| * Create a BluetoothPbap proxy object. |
| * |
| * @hide |
| */ |
| public BluetoothPbap(Context context, ServiceListener l) { |
| mContext = context; |
| mServiceListener = l; |
| mAdapter = BluetoothAdapter.getDefaultAdapter(); |
| IBluetoothManager mgr = mAdapter.getBluetoothManager(); |
| if (mgr != null) { |
| try { |
| mgr.registerStateChangeCallback(mBluetoothStateChangeCallback); |
| } catch (RemoteException re) { |
| Log.e(TAG, "", re); |
| } |
| } |
| doBind(); |
| } |
| |
| boolean doBind() { |
| synchronized (mConnection) { |
| try { |
| if (mService == null) { |
| log("Binding service..."); |
| Intent intent = new Intent(IBluetoothPbap.class.getName()); |
| ComponentName comp = intent.resolveSystemService( |
| mContext.getPackageManager(), 0); |
| intent.setComponent(comp); |
| if (comp == null || !mContext.bindServiceAsUser(intent, mConnection, 0, |
| UserHandle.CURRENT_OR_SELF)) { |
| Log.e(TAG, "Could not bind to Bluetooth Pbap Service with " + intent); |
| return false; |
| } |
| } |
| } catch (SecurityException se) { |
| Log.e(TAG, "", se); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private void doUnbind() { |
| synchronized (mConnection) { |
| if (mService != null) { |
| log("Unbinding service..."); |
| try { |
| mContext.unbindService(mConnection); |
| } catch (IllegalArgumentException ie) { |
| Log.e(TAG, "", ie); |
| } finally { |
| mService = null; |
| } |
| } |
| } |
| } |
| |
| /** @hide */ |
| protected void finalize() throws Throwable { |
| try { |
| close(); |
| } finally { |
| super.finalize(); |
| } |
| } |
| |
| /** |
| * Close the connection to the backing service. |
| * Other public functions of BluetoothPbap will return default error |
| * results once close() has been called. Multiple invocations of close() |
| * are ok. |
| * |
| * @hide |
| */ |
| public synchronized void close() { |
| IBluetoothManager mgr = mAdapter.getBluetoothManager(); |
| if (mgr != null) { |
| try { |
| mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback); |
| } catch (RemoteException re) { |
| Log.e(TAG, "", re); |
| } |
| } |
| doUnbind(); |
| mServiceListener = null; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @hide |
| */ |
| @Override |
| public List<BluetoothDevice> getConnectedDevices() { |
| log("getConnectedDevices()"); |
| final IBluetoothPbap service = mService; |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| return new ArrayList<BluetoothDevice>(); |
| } |
| try { |
| return service.getConnectedDevices(); |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString()); |
| } |
| return new ArrayList<BluetoothDevice>(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @hide |
| */ |
| @SystemApi |
| @Override |
| public int getConnectionState(@Nullable BluetoothDevice device) { |
| log("getConnectionState: device=" + device); |
| try { |
| final IBluetoothPbap service = mService; |
| if (service != null && isEnabled() && isValidDevice(device)) { |
| return service.getConnectionState(device); |
| } |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| } |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString()); |
| } |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @hide |
| */ |
| @Override |
| public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| log("getDevicesMatchingConnectionStates: states=" + Arrays.toString(states)); |
| final IBluetoothPbap service = mService; |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| return new ArrayList<BluetoothDevice>(); |
| } |
| try { |
| return service.getDevicesMatchingConnectionStates(states); |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString()); |
| } |
| return new ArrayList<BluetoothDevice>(); |
| } |
| |
| /** |
| * Disconnects the current Pbap client (PCE). Currently this call blocks, |
| * it may soon be made asynchronous. Returns false if this proxy object is |
| * not currently connected to the Pbap service. |
| * |
| * @hide |
| */ |
| @UnsupportedAppUsage |
| public boolean disconnect(BluetoothDevice device) { |
| log("disconnect()"); |
| final IBluetoothPbap service = mService; |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| try { |
| service.disconnect(device); |
| return true; |
| } catch (RemoteException e) { |
| Log.e(TAG, e.toString()); |
| } |
| return false; |
| } |
| |
| private final ServiceConnection mConnection = new ServiceConnection() { |
| public void onServiceConnected(ComponentName className, IBinder service) { |
| log("Proxy object connected"); |
| mService = IBluetoothPbap.Stub.asInterface(service); |
| if (mServiceListener != null) { |
| mServiceListener.onServiceConnected(BluetoothProfile.PBAP, BluetoothPbap.this); |
| } |
| } |
| |
| public void onServiceDisconnected(ComponentName className) { |
| log("Proxy object disconnected"); |
| doUnbind(); |
| if (mServiceListener != null) { |
| mServiceListener.onServiceDisconnected(BluetoothProfile.PBAP); |
| } |
| } |
| }; |
| |
| private boolean isEnabled() { |
| if (mAdapter.getState() == BluetoothAdapter.STATE_ON) return true; |
| return false; |
| } |
| |
| private boolean isValidDevice(BluetoothDevice device) { |
| if (device == null) return false; |
| |
| if (BluetoothAdapter.checkBluetoothAddress(device.getAddress())) return true; |
| return false; |
| } |
| |
| private static void log(String msg) { |
| if (DBG) { |
| Log.d(TAG, msg); |
| } |
| } |
| } |