/*
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* Copyright (C) 2016 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.Context;
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import android.os.Binder;
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import android.os.IBinder;
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import android.os.RemoteException;
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import android.util.Log;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* This class provides the APIs to control the Bluetooth PBAP Client Profile.
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*
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* @hide
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*/
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public final class BluetoothPbapClient implements BluetoothProfile {
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private static final String TAG = "BluetoothPbapClient";
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private static final boolean DBG = false;
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private static final boolean VDBG = false;
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public static final String ACTION_CONNECTION_STATE_CHANGED =
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"android.bluetooth.pbapclient.profile.action.CONNECTION_STATE_CHANGED";
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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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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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private BluetoothAdapter mAdapter;
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private final BluetoothProfileConnector<IBluetoothPbapClient> mProfileConnector =
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new BluetoothProfileConnector(this, BluetoothProfile.PBAP_CLIENT,
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"BluetoothPbapClient", IBluetoothPbapClient.class.getName()) {
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@Override
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public IBluetoothPbapClient getServiceInterface(IBinder service) {
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return IBluetoothPbapClient.Stub.asInterface(Binder.allowBlocking(service));
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}
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};
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/**
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* Create a BluetoothPbapClient proxy object.
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*/
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BluetoothPbapClient(Context context, ServiceListener listener) {
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if (DBG) {
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Log.d(TAG, "Create BluetoothPbapClient proxy object");
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}
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mAdapter = BluetoothAdapter.getDefaultAdapter();
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mProfileConnector.connect(context, listener);
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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 BluetoothPbapClient 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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mProfileConnector.disconnect();
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}
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private IBluetoothPbapClient getService() {
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return mProfileConnector.getService();
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}
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/**
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* Initiate connection.
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* Upon successful connection to remote PBAP server the Client will
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* attempt to automatically download the users phonebook and call log.
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*
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* @param device a remote device we want connect to
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* @return <code>true</code> if command has been issued successfully; <code>false</code>
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* otherwise;
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*/
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public boolean connect(BluetoothDevice device) {
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if (DBG) {
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log("connect(" + device + ") for PBAP Client.");
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}
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final IBluetoothPbapClient service = getService();
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if (service != null && isEnabled() && isValidDevice(device)) {
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try {
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return service.connect(device);
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return false;
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}
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}
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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}
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return false;
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}
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/**
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* Initiate disconnect.
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*
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* @param device Remote Bluetooth Device
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* @return false on error, true otherwise
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*/
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public boolean disconnect(BluetoothDevice device) {
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if (DBG) {
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log("disconnect(" + device + ")" + new Exception());
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}
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final IBluetoothPbapClient service = getService();
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if (service != null && isEnabled() && isValidDevice(device)) {
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try {
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service.disconnect(device);
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return true;
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return false;
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}
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}
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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}
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return false;
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}
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/**
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* Get the list of connected devices.
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* Currently at most one.
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*
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* @return list of connected devices
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*/
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@Override
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public List<BluetoothDevice> getConnectedDevices() {
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if (DBG) {
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log("getConnectedDevices()");
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}
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final IBluetoothPbapClient service = getService();
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if (service != null && isEnabled()) {
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try {
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return service.getConnectedDevices();
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return new ArrayList<BluetoothDevice>();
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}
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}
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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}
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return new ArrayList<BluetoothDevice>();
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}
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/**
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* Get the list of devices matching specified states. Currently at most one.
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*
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* @return list of matching devices
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*/
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@Override
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public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
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if (DBG) {
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log("getDevicesMatchingStates()");
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}
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final IBluetoothPbapClient service = getService();
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if (service != null && isEnabled()) {
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try {
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return service.getDevicesMatchingConnectionStates(states);
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return new ArrayList<BluetoothDevice>();
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}
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}
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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}
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return new ArrayList<BluetoothDevice>();
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}
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/**
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* Get connection state of device
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*
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* @return device connection state
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*/
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@Override
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public int getConnectionState(BluetoothDevice device) {
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if (DBG) {
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log("getConnectionState(" + device + ")");
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}
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final IBluetoothPbapClient service = getService();
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if (service != null && isEnabled() && isValidDevice(device)) {
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try {
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return service.getConnectionState(device);
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return BluetoothProfile.STATE_DISCONNECTED;
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}
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}
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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}
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return BluetoothProfile.STATE_DISCONNECTED;
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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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private boolean isEnabled() {
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BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
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if (adapter != null && adapter.getState() == BluetoothAdapter.STATE_ON) {
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return true;
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}
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log("Bluetooth is Not enabled");
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return false;
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}
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private static boolean isValidDevice(BluetoothDevice device) {
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return device != null && BluetoothAdapter.checkBluetoothAddress(device.getAddress());
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}
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/**
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* Set priority of the profile
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*
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* <p> The device should already be paired.
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* Priority can be one of {@link #PRIORITY_ON} or
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* {@link #PRIORITY_OFF},
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*
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* @param device Paired bluetooth device
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* @param priority Priority of this profile
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* @return true if priority is set, false on error
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*/
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public boolean setPriority(BluetoothDevice device, int priority) {
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if (DBG) {
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log("setPriority(" + device + ", " + priority + ")");
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}
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final IBluetoothPbapClient service = getService();
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if (service != null && isEnabled() && isValidDevice(device)) {
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if (priority != BluetoothProfile.PRIORITY_OFF
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&& priority != BluetoothProfile.PRIORITY_ON) {
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return false;
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}
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try {
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return service.setPriority(device, priority);
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return false;
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}
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}
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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}
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return false;
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}
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/**
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* Get the priority of the profile.
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*
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* <p> The priority can be any of:
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* {@link #PRIORITY_AUTO_CONNECT}, {@link #PRIORITY_OFF},
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* {@link #PRIORITY_ON}, {@link #PRIORITY_UNDEFINED}
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*
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* @param device Bluetooth device
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* @return priority of the device
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*/
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public int getPriority(BluetoothDevice device) {
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if (VDBG) {
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log("getPriority(" + device + ")");
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}
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final IBluetoothPbapClient service = getService();
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if (service != null && isEnabled() && isValidDevice(device)) {
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try {
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return service.getPriority(device);
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return PRIORITY_OFF;
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}
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}
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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}
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return PRIORITY_OFF;
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}
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}
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