258 lines
9.2 KiB
Java
258 lines
9.2 KiB
Java
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/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.bluetooth;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.Intent;
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import android.content.ServiceConnection;
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import android.os.RemoteException;
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import android.os.IBinder;
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import android.os.ServiceManager;
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import android.util.Log;
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/**
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* The Android Bluetooth API is not finalized, and *will* change. Use at your
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* own risk.
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*
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* Public API for controlling the Bluetooth Pbap Service. This includes
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* Bluetooth Phone book Access profile.
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* BluetoothPbap is a proxy object for controlling the Bluetooth Pbap
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* Service via IPC.
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*
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* Creating a BluetoothPbap object will create a binding with the
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* BluetoothPbap service. Users of this object should call close() when they
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* are finished with the BluetoothPbap, so that this proxy object can unbind
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* from the service.
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*
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* This BluetoothPbap object is not immediately bound to the
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* BluetoothPbap service. Use the ServiceListener interface to obtain a
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* notification when it is bound, this is especially important if you wish to
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* immediately call methods on BluetoothPbap after construction.
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*
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* Android only supports one connected Bluetooth Pce at a time.
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*
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* @hide
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*/
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public class BluetoothPbap {
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private static final String TAG = "BluetoothPbap";
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private static final boolean DBG = false;
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/** int extra for PBAP_STATE_CHANGED_ACTION */
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public static final String PBAP_STATE =
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"android.bluetooth.pbap.intent.PBAP_STATE";
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/** int extra for PBAP_STATE_CHANGED_ACTION */
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public static final String PBAP_PREVIOUS_STATE =
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"android.bluetooth.pbap.intent.PBAP_PREVIOUS_STATE";
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/** Indicates the state of an pbap connection state has changed.
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* This intent will always contain PBAP_STATE, PBAP_PREVIOUS_STATE and
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* BluetoothIntent.ADDRESS extras.
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*/
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public static final String PBAP_STATE_CHANGED_ACTION =
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"android.bluetooth.pbap.intent.action.PBAP_STATE_CHANGED";
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private IBluetoothPbap mService;
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private final Context mContext;
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private final ServiceListener mServiceListener;
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/** There was an error trying to obtain the state */
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public static final int STATE_ERROR = -1;
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/** No client currently connected */
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public static final int STATE_DISCONNECTED = 0;
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/** Connection attempt in progress */
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public static final int STATE_CONNECTING = 1;
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/** Client is currently connected */
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public static final int STATE_CONNECTED = 2;
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public static final int RESULT_FAILURE = 0;
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public static final int RESULT_SUCCESS = 1;
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/** Connection canceled before completion. */
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public static final int RESULT_CANCELED = 2;
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/**
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* An interface for notifying Bluetooth PCE IPC clients when they have
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* been connected to the BluetoothPbap service.
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*/
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public interface ServiceListener {
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/**
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* Called to notify the client when this proxy object has been
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* connected to the BluetoothPbap service. Clients must wait for
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* this callback before making IPC calls on the BluetoothPbap
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* service.
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*/
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public void onServiceConnected();
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/**
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* Called to notify the client that this proxy object has been
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* disconnected from the BluetoothPbap service. Clients must not
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* make IPC calls on the BluetoothPbap service after this callback.
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* This callback will currently only occur if the application hosting
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* the BluetoothPbap service, but may be called more often in future.
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*/
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public void onServiceDisconnected();
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}
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/**
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* Create a BluetoothPbap proxy object.
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*/
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public BluetoothPbap(Context context, ServiceListener l) {
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mContext = context;
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mServiceListener = l;
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if (!context.bindService(new Intent(IBluetoothPbap.class.getName()), mConnection, 0)) {
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Log.e(TAG, "Could not bind to Bluetooth Pbap Service");
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}
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}
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protected void finalize() throws Throwable {
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try {
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close();
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} finally {
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super.finalize();
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}
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}
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/**
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* Close the connection to the backing service.
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* Other public functions of BluetoothPbap will return default error
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* results once close() has been called. Multiple invocations of close()
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* are ok.
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*/
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public synchronized void close() {
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if (mConnection != null) {
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mContext.unbindService(mConnection);
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mConnection = null;
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}
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}
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/**
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* Get the current state of the BluetoothPbap service.
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* @return One of the STATE_ return codes, or STATE_ERROR if this proxy
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* object is currently not connected to the Pbap service.
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*/
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public int getState() {
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if (DBG) log("getState()");
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if (mService != null) {
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try {
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return mService.getState();
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} catch (RemoteException e) {Log.e(TAG, e.toString());}
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} else {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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}
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return BluetoothPbap.STATE_ERROR;
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}
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/**
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* Get the currently connected remote Bluetooth device (PCE).
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* @return The remote Bluetooth device, or null if not in connected or
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* connecting state, or if this proxy object is not connected to
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* the Pbap service.
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*/
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public BluetoothDevice getClient() {
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if (DBG) log("getClient()");
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if (mService != null) {
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try {
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return mService.getClient();
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} catch (RemoteException e) {Log.e(TAG, e.toString());}
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} else {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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}
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return null;
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}
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/**
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* Returns true if the specified Bluetooth device is connected (does not
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* include connecting). Returns false if not connected, or if this proxy
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* object is not currently connected to the Pbap service.
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*/
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public boolean isConnected(BluetoothDevice device) {
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if (DBG) log("isConnected(" + device + ")");
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if (mService != null) {
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try {
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return mService.isConnected(device);
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} catch (RemoteException e) {Log.e(TAG, e.toString());}
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} else {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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}
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return false;
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}
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/**
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* Disconnects the current Pbap client (PCE). Currently this call blocks,
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* it may soon be made asynchronous. Returns false if this proxy object is
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* not currently connected to the Pbap service.
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*/
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public boolean disconnect() {
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if (DBG) log("disconnect()");
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if (mService != null) {
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try {
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mService.disconnect();
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return true;
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} catch (RemoteException e) {Log.e(TAG, e.toString());}
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} else {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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}
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return false;
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}
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/**
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* Check class bits for possible PBAP support.
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* This is a simple heuristic that tries to guess if a device with the
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* given class bits might support PBAP. It is not accurate for all
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* devices. It tries to err on the side of false positives.
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* @return True if this device might support PBAP.
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*/
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public static boolean doesClassMatchSink(BluetoothClass btClass) {
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// TODO optimize the rule
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switch (btClass.getDeviceClass()) {
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case BluetoothClass.Device.COMPUTER_DESKTOP:
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case BluetoothClass.Device.COMPUTER_LAPTOP:
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case BluetoothClass.Device.COMPUTER_SERVER:
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case BluetoothClass.Device.COMPUTER_UNCATEGORIZED:
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return true;
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default:
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return false;
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}
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}
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private ServiceConnection mConnection = new ServiceConnection() {
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public void onServiceConnected(ComponentName className, IBinder service) {
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if (DBG) log("Proxy object connected");
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mService = IBluetoothPbap.Stub.asInterface(service);
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if (mServiceListener != null) {
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mServiceListener.onServiceConnected();
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}
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}
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public void onServiceDisconnected(ComponentName className) {
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if (DBG) log("Proxy object disconnected");
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mService = null;
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if (mServiceListener != null) {
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mServiceListener.onServiceDisconnected();
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}
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}
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};
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private static void log(String msg) {
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Log.d(TAG, msg);
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}
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}
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