| /* |
| * 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.SdkConstant; |
| import android.annotation.SdkConstant.SdkConstantType; |
| 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.util.Log; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * This class provides the APIs to control the Bluetooth Pan |
| * Profile. |
| * |
| *<p>BluetoothPan is a proxy object for controlling the Bluetooth |
| * Service via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get |
| * the BluetoothPan proxy object. |
| * |
| *<p>Each method is protected with its appropriate permission. |
| *@hide |
| */ |
| public final class BluetoothPan implements BluetoothProfile { |
| private static final String TAG = "BluetoothPan"; |
| private static final boolean DBG = true; |
| private static final boolean VDBG = false; |
| |
| /** |
| * Intent used to broadcast the change in connection state of the Pan |
| * profile. |
| * |
| * <p>This intent will have 4 extras: |
| * <ul> |
| * <li> {@link #EXTRA_STATE} - The current state of the profile. </li> |
| * <li> {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.</li> |
| * <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. </li> |
| * <li> {@link #EXTRA_LOCAL_ROLE} - Which local role the remote device is |
| * bound to. </li> |
| * </ul> |
| * |
| * <p>{@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of |
| * {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, |
| * {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}. |
| * |
| * <p> {@link #EXTRA_LOCAL_ROLE} can be one of {@link #LOCAL_NAP_ROLE} or |
| * {@link #LOCAL_PANU_ROLE} |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission to |
| * receive. |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String ACTION_CONNECTION_STATE_CHANGED = |
| "android.bluetooth.pan.profile.action.CONNECTION_STATE_CHANGED"; |
| |
| /** |
| * Extra for {@link #ACTION_CONNECTION_STATE_CHANGED} intent |
| * The local role of the PAN profile that the remote device is bound to. |
| * It can be one of {@link #LOCAL_NAP_ROLE} or {@link #LOCAL_PANU_ROLE}. |
| */ |
| public static final String EXTRA_LOCAL_ROLE = "android.bluetooth.pan.extra.LOCAL_ROLE"; |
| |
| public static final int PAN_ROLE_NONE = 0; |
| /** |
| * The local device is acting as a Network Access Point. |
| */ |
| public static final int LOCAL_NAP_ROLE = 1; |
| public static final int REMOTE_NAP_ROLE = 1; |
| |
| /** |
| * The local device is acting as a PAN User. |
| */ |
| public static final int LOCAL_PANU_ROLE = 2; |
| public static final int REMOTE_PANU_ROLE = 2; |
| |
| /** |
| * Return codes for the connect and disconnect Bluez / Dbus calls. |
| * @hide |
| */ |
| public static final int PAN_DISCONNECT_FAILED_NOT_CONNECTED = 1000; |
| |
| /** |
| * @hide |
| */ |
| public static final int PAN_CONNECT_FAILED_ALREADY_CONNECTED = 1001; |
| |
| /** |
| * @hide |
| */ |
| public static final int PAN_CONNECT_FAILED_ATTEMPT_FAILED = 1002; |
| |
| /** |
| * @hide |
| */ |
| public static final int PAN_OPERATION_GENERIC_FAILURE = 1003; |
| |
| /** |
| * @hide |
| */ |
| public static final int PAN_OPERATION_SUCCESS = 1004; |
| |
| private Context mContext; |
| private ServiceListener mServiceListener; |
| private BluetoothAdapter mAdapter; |
| private IBluetoothPan mPanService; |
| |
| /** |
| * Create a BluetoothPan proxy object for interacting with the local |
| * Bluetooth Service which handles the Pan profile |
| * |
| */ |
| /*package*/ BluetoothPan(Context context, ServiceListener l) { |
| mContext = context; |
| mServiceListener = l; |
| mAdapter = BluetoothAdapter.getDefaultAdapter(); |
| try { |
| mAdapter.getBluetoothManager().registerStateChangeCallback(mStateChangeCallback); |
| } catch (RemoteException re) { |
| Log.w(TAG,"Unable to register BluetoothStateChangeCallback",re); |
| } |
| if (VDBG) Log.d(TAG, "BluetoothPan() call bindService"); |
| doBind(); |
| } |
| |
| boolean doBind() { |
| Intent intent = new Intent(IBluetoothPan.class.getName()); |
| ComponentName comp = intent.resolveSystemService(mContext.getPackageManager(), 0); |
| intent.setComponent(comp); |
| if (comp == null || !mContext.bindServiceAsUser(intent, mConnection, 0, |
| android.os.Process.myUserHandle())) { |
| Log.e(TAG, "Could not bind to Bluetooth Pan Service with " + intent); |
| return false; |
| } |
| return true; |
| } |
| |
| /*package*/ void close() { |
| if (VDBG) log("close()"); |
| |
| IBluetoothManager mgr = mAdapter.getBluetoothManager(); |
| if (mgr != null) { |
| try { |
| mgr.unregisterStateChangeCallback(mStateChangeCallback); |
| } catch (RemoteException re) { |
| Log.w(TAG,"Unable to unregister BluetoothStateChangeCallback",re); |
| } |
| } |
| |
| synchronized (mConnection) { |
| if (mPanService != null) { |
| try { |
| mPanService = null; |
| mContext.unbindService(mConnection); |
| } catch (Exception re) { |
| Log.e(TAG,"",re); |
| } |
| } |
| } |
| mServiceListener = null; |
| } |
| |
| protected void finalize() { |
| close(); |
| } |
| |
| final private IBluetoothStateChangeCallback mStateChangeCallback = new IBluetoothStateChangeCallback.Stub() { |
| |
| @Override |
| public void onBluetoothStateChange(boolean on) { |
| // Handle enable request to bind again. |
| Log.d(TAG, "onBluetoothStateChange on: " + on); |
| if (on) { |
| try { |
| if (mPanService == null) { |
| if (VDBG) Log.d(TAG, "onBluetoothStateChange calling doBind()"); |
| doBind(); |
| } |
| |
| } catch (IllegalStateException e) { |
| Log.e(TAG,"onBluetoothStateChange: could not bind to PAN service: ", e); |
| |
| } catch (SecurityException e) { |
| Log.e(TAG,"onBluetoothStateChange: could not bind to PAN service: ", e); |
| } |
| } else { |
| if (VDBG) Log.d(TAG,"Unbinding service..."); |
| synchronized (mConnection) { |
| try { |
| mPanService = null; |
| mContext.unbindService(mConnection); |
| } catch (Exception re) { |
| Log.e(TAG,"",re); |
| } |
| } |
| } |
| } |
| }; |
| |
| /** |
| * Initiate connection to a profile of the remote bluetooth device. |
| * |
| * <p> This API returns false in scenarios like the profile on the |
| * device is already connected or Bluetooth is not turned on. |
| * When this API returns true, it is guaranteed that |
| * connection state intent for the profile will be broadcasted with |
| * the state. Users can get the connection state of the profile |
| * from this intent. |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} |
| * permission. |
| * |
| * @param device Remote Bluetooth Device |
| * @return false on immediate error, |
| * true otherwise |
| * @hide |
| */ |
| public boolean connect(BluetoothDevice device) { |
| if (DBG) log("connect(" + device + ")"); |
| if (mPanService != null && isEnabled() && |
| isValidDevice(device)) { |
| try { |
| return mPanService.connect(device); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| if (mPanService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| |
| /** |
| * Initiate disconnection from a profile |
| * |
| * <p> This API will return false in scenarios like the profile on the |
| * Bluetooth device is not in connected state etc. When this API returns, |
| * true, it is guaranteed that the connection state change |
| * intent will be broadcasted with the state. Users can get the |
| * disconnection state of the profile from this intent. |
| * |
| * <p> If the disconnection is initiated by a remote device, the state |
| * will transition from {@link #STATE_CONNECTED} to |
| * {@link #STATE_DISCONNECTED}. If the disconnect is initiated by the |
| * host (local) device the state will transition from |
| * {@link #STATE_CONNECTED} to state {@link #STATE_DISCONNECTING} to |
| * state {@link #STATE_DISCONNECTED}. The transition to |
| * {@link #STATE_DISCONNECTING} can be used to distinguish between the |
| * two scenarios. |
| * |
| * <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} |
| * permission. |
| * |
| * @param device Remote Bluetooth Device |
| * @return false on immediate error, |
| * true otherwise |
| * @hide |
| */ |
| public boolean disconnect(BluetoothDevice device) { |
| if (DBG) log("disconnect(" + device + ")"); |
| if (mPanService != null && isEnabled() && |
| isValidDevice(device)) { |
| try { |
| return mPanService.disconnect(device); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return false; |
| } |
| } |
| if (mPanService == null) Log.w(TAG, "Proxy not attached to service"); |
| return false; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public List<BluetoothDevice> getConnectedDevices() { |
| if (VDBG) log("getConnectedDevices()"); |
| if (mPanService != null && isEnabled()) { |
| try { |
| return mPanService.getConnectedDevices(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return new ArrayList<BluetoothDevice>(); |
| } |
| } |
| if (mPanService == null) Log.w(TAG, "Proxy not attached to service"); |
| return new ArrayList<BluetoothDevice>(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| if (VDBG) log("getDevicesMatchingStates()"); |
| if (mPanService != null && isEnabled()) { |
| try { |
| return mPanService.getDevicesMatchingConnectionStates(states); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return new ArrayList<BluetoothDevice>(); |
| } |
| } |
| if (mPanService == null) Log.w(TAG, "Proxy not attached to service"); |
| return new ArrayList<BluetoothDevice>(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public int getConnectionState(BluetoothDevice device) { |
| if (VDBG) log("getState(" + device + ")"); |
| if (mPanService != null && isEnabled() |
| && isValidDevice(device)) { |
| try { |
| return mPanService.getConnectionState(device); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| } |
| if (mPanService == null) Log.w(TAG, "Proxy not attached to service"); |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| |
| public void setBluetoothTethering(boolean value) { |
| if (DBG) log("setBluetoothTethering(" + value + ")"); |
| |
| if (mPanService != null && isEnabled()) { |
| try { |
| mPanService.setBluetoothTethering(value); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| } |
| } |
| } |
| |
| public boolean isTetheringOn() { |
| if (VDBG) log("isTetheringOn()"); |
| |
| if (mPanService != null && isEnabled()) { |
| try { |
| return mPanService.isTetheringOn(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); |
| } |
| } |
| return false; |
| } |
| |
| private final ServiceConnection mConnection = new ServiceConnection() { |
| public void onServiceConnected(ComponentName className, IBinder service) { |
| if (DBG) Log.d(TAG, "BluetoothPAN Proxy object connected"); |
| mPanService = IBluetoothPan.Stub.asInterface(service); |
| |
| if (mServiceListener != null) { |
| mServiceListener.onServiceConnected(BluetoothProfile.PAN, |
| BluetoothPan.this); |
| } |
| } |
| public void onServiceDisconnected(ComponentName className) { |
| if (DBG) Log.d(TAG, "BluetoothPAN Proxy object disconnected"); |
| mPanService = null; |
| if (mServiceListener != null) { |
| mServiceListener.onServiceDisconnected(BluetoothProfile.PAN); |
| } |
| } |
| }; |
| |
| 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) { |
| Log.d(TAG, msg); |
| } |
| } |
