/* * Copyright (C) 2009 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.os.IBinder; import android.os.Parcel; import android.os.Parcelable; import android.os.ParcelUuid; import android.os.RemoteException; import android.os.ServiceManager; import android.util.Log; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.UUID; /** * Represents a remote Bluetooth device. A {@link BluetoothDevice} lets you * create a connection with the respective device or query information about * it, such as the name, address, class, and bonding state. * *

This class is really just a thin wrapper for a Bluetooth hardware * address. Objects of this class are immutable. Operations on this class * are performed on the remote Bluetooth hardware address, using the * {@link BluetoothAdapter} that was used to create this {@link * BluetoothDevice}. * *

To get a {@link BluetoothDevice}, use * {@link BluetoothAdapter#getRemoteDevice(String) * BluetoothAdapter.getRemoteDevice(String)} to create one representing a device * of a known MAC address (which you can get through device discovery with * {@link BluetoothAdapter}) or get one from the set of bonded devices * returned by {@link BluetoothAdapter#getBondedDevices() * BluetoothAdapter.getBondedDevices()}. You can then open a * {@link BluetoothSocket} for communication with the remote device, using * {@link #createRfcommSocketToServiceRecord(UUID)}. * *

Note: * Requires the {@link android.Manifest.permission#BLUETOOTH} permission. * *

*

Developer Guides

*

For more information about using Bluetooth, read the * Bluetooth developer guide.

*
* * {@see BluetoothAdapter} * {@see BluetoothSocket} */ public final class BluetoothDevice implements Parcelable { private static final String TAG = "BluetoothDevice"; private static final boolean DBG = false; /** * Sentinel error value for this class. Guaranteed to not equal any other * integer constant in this class. Provided as a convenience for functions * that require a sentinel error value, for example: *

Intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, * BluetoothDevice.ERROR) */ public static final int ERROR = Integer.MIN_VALUE; /** * Broadcast Action: Remote device discovered. *

Sent when a remote device is found during discovery. *

Always contains the extra fields {@link #EXTRA_DEVICE} and {@link * #EXTRA_CLASS}. Can contain the extra fields {@link #EXTRA_NAME} and/or * {@link #EXTRA_RSSI} if they are available. *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. */ // TODO: Change API to not broadcast RSSI if not available (incoming connection) @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_FOUND = "android.bluetooth.device.action.FOUND"; /** * Broadcast Action: Remote device disappeared. *

Sent when a remote device that was found in the last discovery is not * found in the current discovery. *

Always contains the extra field {@link #EXTRA_DEVICE}. *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. * @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_DISAPPEARED = "android.bluetooth.device.action.DISAPPEARED"; /** * Broadcast Action: Bluetooth class of a remote device has changed. *

Always contains the extra fields {@link #EXTRA_DEVICE} and {@link * #EXTRA_CLASS}. *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. * @see {@link BluetoothClass} */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_CLASS_CHANGED = "android.bluetooth.device.action.CLASS_CHANGED"; /** * Broadcast Action: Indicates a low level (ACL) connection has been * established with a remote device. *

Always contains the extra field {@link #EXTRA_DEVICE}. *

ACL connections are managed automatically by the Android Bluetooth * stack. *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_ACL_CONNECTED = "android.bluetooth.device.action.ACL_CONNECTED"; /** * Broadcast Action: Indicates that a low level (ACL) disconnection has * been requested for a remote device, and it will soon be disconnected. *

This is useful for graceful disconnection. Applications should use * this intent as a hint to immediately terminate higher level connections * (RFCOMM, L2CAP, or profile connections) to the remote device. *

Always contains the extra field {@link #EXTRA_DEVICE}. *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_ACL_DISCONNECT_REQUESTED = "android.bluetooth.device.action.ACL_DISCONNECT_REQUESTED"; /** * Broadcast Action: Indicates a low level (ACL) disconnection from a * remote device. *

Always contains the extra field {@link #EXTRA_DEVICE}. *

ACL connections are managed automatically by the Android Bluetooth * stack. *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_ACL_DISCONNECTED = "android.bluetooth.device.action.ACL_DISCONNECTED"; /** * Broadcast Action: Indicates the friendly name of a remote device has * been retrieved for the first time, or changed since the last retrieval. *

Always contains the extra fields {@link #EXTRA_DEVICE} and {@link * #EXTRA_NAME}. *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_NAME_CHANGED = "android.bluetooth.device.action.NAME_CHANGED"; /** * Broadcast Action: Indicates the alias of a remote device has been * changed. *

Always contains the extra field {@link #EXTRA_DEVICE}. *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. * * @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_ALIAS_CHANGED = "android.bluetooth.device.action.ALIAS_CHANGED"; /** * Broadcast Action: Indicates a change in the bond state of a remote * device. For example, if a device is bonded (paired). *

Always contains the extra fields {@link #EXTRA_DEVICE}, {@link * #EXTRA_BOND_STATE} and {@link #EXTRA_PREVIOUS_BOND_STATE}. *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. */ // Note: When EXTRA_BOND_STATE is BOND_NONE then this will also // contain a hidden extra field EXTRA_REASON with the result code. @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_BOND_STATE_CHANGED = "android.bluetooth.device.action.BOND_STATE_CHANGED"; /** * Used as a Parcelable {@link BluetoothDevice} extra field in every intent * broadcast by this class. It contains the {@link BluetoothDevice} that * the intent applies to. */ public static final String EXTRA_DEVICE = "android.bluetooth.device.extra.DEVICE"; /** * Used as a String extra field in {@link #ACTION_NAME_CHANGED} and {@link * #ACTION_FOUND} intents. It contains the friendly Bluetooth name. */ public static final String EXTRA_NAME = "android.bluetooth.device.extra.NAME"; /** * Used as an optional short extra field in {@link #ACTION_FOUND} intents. * Contains the RSSI value of the remote device as reported by the * Bluetooth hardware. */ public static final String EXTRA_RSSI = "android.bluetooth.device.extra.RSSI"; /** * Used as a Parcelable {@link BluetoothClass} extra field in {@link * #ACTION_FOUND} and {@link #ACTION_CLASS_CHANGED} intents. */ public static final String EXTRA_CLASS = "android.bluetooth.device.extra.CLASS"; /** * Used as an int extra field in {@link #ACTION_BOND_STATE_CHANGED} intents. * Contains the bond state of the remote device. *

Possible values are: * {@link #BOND_NONE}, * {@link #BOND_BONDING}, * {@link #BOND_BONDED}. */ public static final String EXTRA_BOND_STATE = "android.bluetooth.device.extra.BOND_STATE"; /** * Used as an int extra field in {@link #ACTION_BOND_STATE_CHANGED} intents. * Contains the previous bond state of the remote device. *

Possible values are: * {@link #BOND_NONE}, * {@link #BOND_BONDING}, * {@link #BOND_BONDED}. */ public static final String EXTRA_PREVIOUS_BOND_STATE = "android.bluetooth.device.extra.PREVIOUS_BOND_STATE"; /** * Indicates the remote device is not bonded (paired). *

There is no shared link key with the remote device, so communication * (if it is allowed at all) will be unauthenticated and unencrypted. */ public static final int BOND_NONE = 10; /** * Indicates bonding (pairing) is in progress with the remote device. */ public static final int BOND_BONDING = 11; /** * Indicates the remote device is bonded (paired). *

A shared link keys exists locally for the remote device, so * communication can be authenticated and encrypted. *

Being bonded (paired) with a remote device does not necessarily * mean the device is currently connected. It just means that the pending * procedure was completed at some earlier time, and the link key is still * stored locally, ready to use on the next connection. * */ public static final int BOND_BONDED = 12; /** @hide */ public static final String EXTRA_REASON = "android.bluetooth.device.extra.REASON"; /** @hide */ public static final String EXTRA_PAIRING_VARIANT = "android.bluetooth.device.extra.PAIRING_VARIANT"; /** @hide */ public static final String EXTRA_PAIRING_KEY = "android.bluetooth.device.extra.PAIRING_KEY"; /** * Broadcast Action: This intent is used to broadcast the {@link UUID} * wrapped as a {@link android.os.ParcelUuid} of the remote device after it * has been fetched. This intent is sent only when the UUIDs of the remote * device are requested to be fetched using Service Discovery Protocol *

Always contains the extra field {@link #EXTRA_DEVICE} *

Always contains the extra field {@link #EXTRA_UUID} *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_UUID = "android.bluetooth.device.action.UUID"; /** * Broadcast Action: Indicates a failure to retrieve the name of a remote * device. *

Always contains the extra field {@link #EXTRA_DEVICE}. *

Requires {@link android.Manifest.permission#BLUETOOTH} to receive. * @hide */ //TODO: is this actually useful? @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_NAME_FAILED = "android.bluetooth.device.action.NAME_FAILED"; /** @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_PAIRING_REQUEST = "android.bluetooth.device.action.PAIRING_REQUEST"; /** @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_PAIRING_CANCEL = "android.bluetooth.device.action.PAIRING_CANCEL"; /** @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_CONNECTION_ACCESS_REQUEST = "android.bluetooth.device.action.CONNECTION_ACCESS_REQUEST"; /** @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_CONNECTION_ACCESS_REPLY = "android.bluetooth.device.action.CONNECTION_ACCESS_REPLY"; /** @hide */ @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String ACTION_CONNECTION_ACCESS_CANCEL = "android.bluetooth.device.action.CONNECTION_ACCESS_CANCEL"; /** * Used as an extra field in {@link #ACTION_CONNECTION_ACCESS_REQUEST} intent. * @hide */ public static final String EXTRA_ACCESS_REQUEST_TYPE = "android.bluetooth.device.extra.ACCESS_REQUEST_TYPE"; /**@hide*/ public static final int REQUEST_TYPE_PROFILE_CONNECTION = 1; /**@hide*/ public static final int REQUEST_TYPE_PHONEBOOK_ACCESS = 2; /** * Used as an extra field in {@link #ACTION_CONNECTION_ACCESS_REQUEST} intents, * Contains package name to return reply intent to. * @hide */ public static final String EXTRA_PACKAGE_NAME = "android.bluetooth.device.extra.PACKAGE_NAME"; /** * Used as an extra field in {@link #ACTION_CONNECTION_ACCESS_REQUEST} intents, * Contains class name to return reply intent to. * @hide */ public static final String EXTRA_CLASS_NAME = "android.bluetooth.device.extra.CLASS_NAME"; /** * Used as an extra field in {@link #ACTION_CONNECTION_ACCESS_REPLY} intent. * @hide */ public static final String EXTRA_CONNECTION_ACCESS_RESULT = "android.bluetooth.device.extra.CONNECTION_ACCESS_RESULT"; /**@hide*/ public static final int CONNECTION_ACCESS_YES = 1; /**@hide*/ public static final int CONNECTION_ACCESS_NO = 2; /** * Used as an extra field in {@link #ACTION_CONNECTION_ACCESS_REPLY} intents, * Contains boolean to indicate if the allowed response is once-for-all so that * next request will be granted without asking user again. * @hide */ public static final String EXTRA_ALWAYS_ALLOWED = "android.bluetooth.device.extra.ALWAYS_ALLOWED"; /** * A bond attempt succeeded * @hide */ public static final int BOND_SUCCESS = 0; /** * A bond attempt failed because pins did not match, or remote device did * not respond to pin request in time * @hide */ public static final int UNBOND_REASON_AUTH_FAILED = 1; /** * A bond attempt failed because the other side explicitly rejected * bonding * @hide */ public static final int UNBOND_REASON_AUTH_REJECTED = 2; /** * A bond attempt failed because we canceled the bonding process * @hide */ public static final int UNBOND_REASON_AUTH_CANCELED = 3; /** * A bond attempt failed because we could not contact the remote device * @hide */ public static final int UNBOND_REASON_REMOTE_DEVICE_DOWN = 4; /** * A bond attempt failed because a discovery is in progress * @hide */ public static final int UNBOND_REASON_DISCOVERY_IN_PROGRESS = 5; /** * A bond attempt failed because of authentication timeout * @hide */ public static final int UNBOND_REASON_AUTH_TIMEOUT = 6; /** * A bond attempt failed because of repeated attempts * @hide */ public static final int UNBOND_REASON_REPEATED_ATTEMPTS = 7; /** * A bond attempt failed because we received an Authentication Cancel * by remote end * @hide */ public static final int UNBOND_REASON_REMOTE_AUTH_CANCELED = 8; /** * An existing bond was explicitly revoked * @hide */ public static final int UNBOND_REASON_REMOVED = 9; /** * The user will be prompted to enter a pin * @hide */ public static final int PAIRING_VARIANT_PIN = 0; /** * The user will be prompted to enter a passkey * @hide */ public static final int PAIRING_VARIANT_PASSKEY = 1; /** * The user will be prompted to confirm the passkey displayed on the screen * @hide */ public static final int PAIRING_VARIANT_PASSKEY_CONFIRMATION = 2; /** * The user will be prompted to accept or deny the incoming pairing request * @hide */ public static final int PAIRING_VARIANT_CONSENT = 3; /** * The user will be prompted to enter the passkey displayed on remote device * This is used for Bluetooth 2.1 pairing. * @hide */ public static final int PAIRING_VARIANT_DISPLAY_PASSKEY = 4; /** * The user will be prompted to enter the PIN displayed on remote device. * This is used for Bluetooth 2.0 pairing. * @hide */ public static final int PAIRING_VARIANT_DISPLAY_PIN = 5; /** * The user will be prompted to accept or deny the OOB pairing request * @hide */ public static final int PAIRING_VARIANT_OOB_CONSENT = 6; /** * Used as an extra field in {@link #ACTION_UUID} intents, * Contains the {@link android.os.ParcelUuid}s of the remote device which * is a parcelable version of {@link UUID}. */ public static final String EXTRA_UUID = "android.bluetooth.device.extra.UUID"; /** * Lazy initialization. Guaranteed final after first object constructed, or * getService() called. * TODO: Unify implementation of sService amongst BluetoothFoo API's */ private static IBluetooth sService; private final String mAddress; /*package*/ static IBluetooth getService() { synchronized (BluetoothDevice.class) { if (sService == null) { BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); sService = adapter.getBluetoothService(mStateChangeCallback); } } return sService; } static IBluetoothManagerCallback mStateChangeCallback = new IBluetoothManagerCallback.Stub() { public void onBluetoothServiceUp(IBluetooth bluetoothService) throws RemoteException { synchronized (BluetoothDevice.class) { sService = bluetoothService; } } public void onBluetoothServiceDown() throws RemoteException { synchronized (BluetoothDevice.class) { sService = null; } } }; /** * Create a new BluetoothDevice * Bluetooth MAC address must be upper case, such as "00:11:22:33:AA:BB", * and is validated in this constructor. * @param address valid Bluetooth MAC address * @throws RuntimeException Bluetooth is not available on this platform * @throws IllegalArgumentException address is invalid * @hide */ /*package*/ BluetoothDevice(String address) { getService(); // ensures sService is initialized if (!BluetoothAdapter.checkBluetoothAddress(address)) { throw new IllegalArgumentException(address + " is not a valid Bluetooth address"); } mAddress = address; } @Override public boolean equals(Object o) { if (o instanceof BluetoothDevice) { return mAddress.equals(((BluetoothDevice)o).getAddress()); } return false; } @Override public int hashCode() { return mAddress.hashCode(); } /** * Returns a string representation of this BluetoothDevice. *

Currently this is the Bluetooth hardware address, for example * "00:11:22:AA:BB:CC". However, you should always use {@link #getAddress} * if you explicitly require the Bluetooth hardware address in case the * {@link #toString} representation changes in the future. * @return string representation of this BluetoothDevice */ @Override public String toString() { return mAddress; } public int describeContents() { return 0; } public static final Parcelable.Creator CREATOR = new Parcelable.Creator() { public BluetoothDevice createFromParcel(Parcel in) { return new BluetoothDevice(in.readString()); } public BluetoothDevice[] newArray(int size) { return new BluetoothDevice[size]; } }; public void writeToParcel(Parcel out, int flags) { out.writeString(mAddress); } /** * Returns the hardware address of this BluetoothDevice. *

For example, "00:11:22:AA:BB:CC". * @return Bluetooth hardware address as string */ public String getAddress() { if (DBG) Log.d(TAG, "mAddress: " + mAddress); return mAddress; } /** * Get the friendly Bluetooth name of the remote device. * *

The local adapter will automatically retrieve remote names when * performing a device scan, and will cache them. This method just returns * the name for this device from the cache. *

Requires {@link android.Manifest.permission#BLUETOOTH} * * @return the Bluetooth name, or null if there was a problem. */ public String getName() { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot get Remote Device name"); return null; } try { return sService.getRemoteName(this); } catch (RemoteException e) {Log.e(TAG, "", e);} return null; } /** * Get the Bluetooth alias of the remote device. *

Alias is the locally modified name of a remote device. * * @return the Bluetooth alias, or null if no alias or there was a problem * @hide */ public String getAlias() { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot get Remote Device Alias"); return null; } try { return sService.getRemoteAlias(this); } catch (RemoteException e) {Log.e(TAG, "", e);} return null; } /** * Set the Bluetooth alias of the remote device. *

Alias is the locally modified name of a remote device. *

This methoid overwrites the alias. The changed * alias is saved in the local storage so that the change * is preserved over power cycle. * * @return true on success, false on error * @hide */ public boolean setAlias(String alias) { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot set Remote Device name"); return false; } try { return sService.setRemoteAlias(this, alias); } catch (RemoteException e) {Log.e(TAG, "", e);} return false; } /** * Get the Bluetooth alias of the remote device. * If Alias is null, get the Bluetooth name instead. * @see #getAlias() * @see #getName() * * @return the Bluetooth alias, or null if no alias or there was a problem * @hide */ public String getAliasName() { String name = getAlias(); if (name == null) { name = getName(); } return name; } /** * Start the bonding (pairing) process with the remote device. *

This is an asynchronous call, it will return immediately. Register * for {@link #ACTION_BOND_STATE_CHANGED} intents to be notified when * the bonding process completes, and its result. *

Android system services will handle the necessary user interactions * to confirm and complete the bonding process. *

Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. * * @return false on immediate error, true if bonding will begin * @hide */ public boolean createBond() { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot create bond to Remote Device"); return false; } try { return sService.createBond(this); } catch (RemoteException e) {Log.e(TAG, "", e);} return false; } /** * Start the bonding (pairing) process with the remote device using the * Out Of Band mechanism. * *

This is an asynchronous call, it will return immediately. Register * for {@link #ACTION_BOND_STATE_CHANGED} intents to be notified when * the bonding process completes, and its result. * *

Android system services will handle the necessary user interactions * to confirm and complete the bonding process. * *

Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. * * @param hash - Simple Secure pairing hash * @param randomizer - The random key obtained using OOB * @return false on immediate error, true if bonding will begin * * @hide */ public boolean createBondOutOfBand(byte[] hash, byte[] randomizer) { //TODO(BT) /* try { return sService.createBondOutOfBand(this, hash, randomizer); } catch (RemoteException e) {Log.e(TAG, "", e);}*/ return false; } /** * Set the Out Of Band data for a remote device to be used later * in the pairing mechanism. Users can obtain this data through other * trusted channels * *

Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. * * @param hash Simple Secure pairing hash * @param randomizer The random key obtained using OOB * @return false on error; true otherwise * * @hide */ public boolean setDeviceOutOfBandData(byte[] hash, byte[] randomizer) { //TODO(BT) /* try { return sService.setDeviceOutOfBandData(this, hash, randomizer); } catch (RemoteException e) {Log.e(TAG, "", e);} */ return false; } /** * Cancel an in-progress bonding request started with {@link #createBond}. *

Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. * * @return true on success, false on error * @hide */ public boolean cancelBondProcess() { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot cancel Remote Device bond"); return false; } try { return sService.cancelBondProcess(this); } catch (RemoteException e) {Log.e(TAG, "", e);} return false; } /** * Remove bond (pairing) with the remote device. *

Delete the link key associated with the remote device, and * immediately terminate connections to that device that require * authentication and encryption. *

Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. * * @return true on success, false on error * @hide */ public boolean removeBond() { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot remove Remote Device bond"); return false; } try { return sService.removeBond(this); } catch (RemoteException e) {Log.e(TAG, "", e);} return false; } /** * Get the bond state of the remote device. *

Possible values for the bond state are: * {@link #BOND_NONE}, * {@link #BOND_BONDING}, * {@link #BOND_BONDED}. *

Requires {@link android.Manifest.permission#BLUETOOTH}. * * @return the bond state */ public int getBondState() { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot get bond state"); return BOND_NONE; } try { return sService.getBondState(this); } catch (RemoteException e) {Log.e(TAG, "", e);} catch (NullPointerException npe) { // Handle case where bluetooth service proxy // is already null. Log.e(TAG, "NullPointerException for getBondState() of device ("+ getAddress()+")", npe); } return BOND_NONE; } /** * Get the Bluetooth class of the remote device. *

Requires {@link android.Manifest.permission#BLUETOOTH}. * * @return Bluetooth class object, or null on error */ public BluetoothClass getBluetoothClass() { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot get Bluetooth Class"); return null; } try { int classInt = sService.getRemoteClass(this); if (classInt == BluetoothClass.ERROR) return null; return new BluetoothClass(classInt); } catch (RemoteException e) {Log.e(TAG, "", e);} return null; } /** * Get trust state of a remote device. *

Requires {@link android.Manifest.permission#BLUETOOTH}. * @hide */ public boolean getTrustState() { //TODO(BT) /* try { return sService.getTrustState(this); } catch (RemoteException e) { Log.e(TAG, "", e); }*/ return false; } /** * Set trust state for a remote device. *

Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}. * @param value the trust state value (true or false) * @hide */ public boolean setTrust(boolean value) { //TODO(BT) /* try { return sService.setTrust(this, value); } catch (RemoteException e) { Log.e(TAG, "", e); }*/ return false; } /** * Returns the supported features (UUIDs) of the remote device. * *

This method does not start a service discovery procedure to retrieve the UUIDs * from the remote device. Instead, the local cached copy of the service * UUIDs are returned. *

Use {@link #fetchUuidsWithSdp} if fresh UUIDs are desired. *

Requires {@link android.Manifest.permission#BLUETOOTH}. * * @return the supported features (UUIDs) of the remote device, * or null on error */ public ParcelUuid[] getUuids() { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot get remote device Uuids"); return null; } try { return sService.getRemoteUuids(this); } catch (RemoteException e) {Log.e(TAG, "", e);} return null; } /** * Perform a service discovery on the remote device to get the UUIDs supported. * *

This API is asynchronous and {@link #ACTION_UUID} intent is sent, * with the UUIDs supported by the remote end. If there is an error * in getting the SDP records or if the process takes a long time, * {@link #ACTION_UUID} intent is sent with the UUIDs that is currently * present in the cache. Clients should use the {@link #getUuids} to get UUIDs * if service discovery is not to be performed. *

Requires {@link android.Manifest.permission#BLUETOOTH}. * * @return False if the sanity check fails, True if the process * of initiating an ACL connection to the remote device * was started. */ public boolean fetchUuidsWithSdp() { try { return sService.fetchRemoteUuids(this); } catch (RemoteException e) {Log.e(TAG, "", e);} return false; } /** @hide */ public int getServiceChannel(ParcelUuid uuid) { //TODO(BT) /* try { return sService.getRemoteServiceChannel(this, uuid); } catch (RemoteException e) {Log.e(TAG, "", e);}*/ return BluetoothDevice.ERROR; } /** @hide */ public boolean setPin(byte[] pin) { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot set Remote Device pin"); return false; } try { return sService.setPin(this, true, pin.length, pin); } catch (RemoteException e) {Log.e(TAG, "", e);} return false; } /** @hide */ public boolean setPasskey(int passkey) { //TODO(BT) /* try { return sService.setPasskey(this, true, 4, passkey); } catch (RemoteException e) {Log.e(TAG, "", e);}*/ return false; } /** @hide */ public boolean setPairingConfirmation(boolean confirm) { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot set pairing confirmation"); return false; } try { return sService.setPairingConfirmation(this, confirm); } catch (RemoteException e) {Log.e(TAG, "", e);} return false; } /** @hide */ public boolean setRemoteOutOfBandData() { // TODO(BT) /* try { return sService.setRemoteOutOfBandData(this); } catch (RemoteException e) {Log.e(TAG, "", e);}*/ return false; } /** @hide */ public boolean cancelPairingUserInput() { if (sService == null) { Log.e(TAG, "BT not enabled. Cannot create pairing user input"); return false; } try { return sService.cancelBondProcess(this); } catch (RemoteException e) {Log.e(TAG, "", e);} return false; } /** @hide */ public boolean isBluetoothDock() { // TODO(BT) /* try { return sService.isBluetoothDock(this); } catch (RemoteException e) {Log.e(TAG, "", e);}*/ return false; } /** * Create an RFCOMM {@link BluetoothSocket} ready to start a secure * outgoing connection to this remote device on given channel. *

The remote device will be authenticated and communication on this * socket will be encrypted. *

Use this socket only if an authenticated socket link is possible. * Authentication refers to the authentication of the link key to * prevent man-in-the-middle type of attacks. * For example, for Bluetooth 2.1 devices, if any of the devices does not * have an input and output capability or just has the ability to * display a numeric key, a secure socket connection is not possible. * In such a case, use {#link createInsecureRfcommSocket}. * For more details, refer to the Security Model section 5.2 (vol 3) of * Bluetooth Core Specification version 2.1 + EDR. *

Use {@link BluetoothSocket#connect} to initiate the outgoing * connection. *

Valid RFCOMM channels are in range 1 to 30. *

Requires {@link android.Manifest.permission#BLUETOOTH} * * @param channel RFCOMM channel to connect to * @return a RFCOMM BluetoothServerSocket ready for an outgoing connection * @throws IOException on error, for example Bluetooth not available, or * insufficient permissions * @hide */ public BluetoothSocket createRfcommSocket(int channel) throws IOException { return new BluetoothSocket(BluetoothSocket.TYPE_RFCOMM, -1, true, true, this, channel, null); } /** * Create an RFCOMM {@link BluetoothSocket} ready to start a secure * outgoing connection to this remote device using SDP lookup of uuid. *

This is designed to be used with {@link * BluetoothAdapter#listenUsingRfcommWithServiceRecord} for peer-peer * Bluetooth applications. *

Use {@link BluetoothSocket#connect} to initiate the outgoing * connection. This will also perform an SDP lookup of the given uuid to * determine which channel to connect to. *

The remote device will be authenticated and communication on this * socket will be encrypted. *

Use this socket only if an authenticated socket link is possible. * Authentication refers to the authentication of the link key to * prevent man-in-the-middle type of attacks. * For example, for Bluetooth 2.1 devices, if any of the devices does not * have an input and output capability or just has the ability to * display a numeric key, a secure socket connection is not possible. * In such a case, use {#link createInsecureRfcommSocketToServiceRecord}. * For more details, refer to the Security Model section 5.2 (vol 3) of * Bluetooth Core Specification version 2.1 + EDR. *

Hint: If you are connecting to a Bluetooth serial board then try * using the well-known SPP UUID 00001101-0000-1000-8000-00805F9B34FB. * However if you are connecting to an Android peer then please generate * your own unique UUID. *

Requires {@link android.Manifest.permission#BLUETOOTH} * * @param uuid service record uuid to lookup RFCOMM channel * @return a RFCOMM BluetoothServerSocket ready for an outgoing connection * @throws IOException on error, for example Bluetooth not available, or * insufficient permissions */ public BluetoothSocket createRfcommSocketToServiceRecord(UUID uuid) throws IOException { return new BluetoothSocket(BluetoothSocket.TYPE_RFCOMM, -1, true, true, this, -1, new ParcelUuid(uuid)); } /** * Create an RFCOMM {@link BluetoothSocket} socket ready to start an insecure * outgoing connection to this remote device using SDP lookup of uuid. *

The communication channel will not have an authenticated link key * i.e it will be subject to man-in-the-middle attacks. For Bluetooth 2.1 * devices, the link key will be encrypted, as encryption is mandatory. * For legacy devices (pre Bluetooth 2.1 devices) the link key will * be not be encrypted. Use {@link #createRfcommSocketToServiceRecord} if an * encrypted and authenticated communication channel is desired. *

This is designed to be used with {@link * BluetoothAdapter#listenUsingInsecureRfcommWithServiceRecord} for peer-peer * Bluetooth applications. *

Use {@link BluetoothSocket#connect} to initiate the outgoing * connection. This will also perform an SDP lookup of the given uuid to * determine which channel to connect to. *

The remote device will be authenticated and communication on this * socket will be encrypted. *

Hint: If you are connecting to a Bluetooth serial board then try * using the well-known SPP UUID 00001101-0000-1000-8000-00805F9B34FB. * However if you are connecting to an Android peer then please generate * your own unique UUID. *

Requires {@link android.Manifest.permission#BLUETOOTH} * * @param uuid service record uuid to lookup RFCOMM channel * @return a RFCOMM BluetoothServerSocket ready for an outgoing connection * @throws IOException on error, for example Bluetooth not available, or * insufficient permissions */ public BluetoothSocket createInsecureRfcommSocketToServiceRecord(UUID uuid) throws IOException { return new BluetoothSocket(BluetoothSocket.TYPE_RFCOMM, -1, false, false, this, -1, new ParcelUuid(uuid)); } /** * Construct an insecure RFCOMM socket ready to start an outgoing * connection. * Call #connect on the returned #BluetoothSocket to begin the connection. * The remote device will not be authenticated and communication on this * socket will not be encrypted. *

Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} * * @param port remote port * @return An RFCOMM BluetoothSocket * @throws IOException On error, for example Bluetooth not available, or * insufficient permissions. * @hide */ public BluetoothSocket createInsecureRfcommSocket(int port) throws IOException { return new BluetoothSocket(BluetoothSocket.TYPE_RFCOMM, -1, false, false, this, port, null); } /** * Construct a SCO socket ready to start an outgoing connection. * Call #connect on the returned #BluetoothSocket to begin the connection. *

Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN} * * @return a SCO BluetoothSocket * @throws IOException on error, for example Bluetooth not available, or * insufficient permissions. * @hide */ public BluetoothSocket createScoSocket() throws IOException { return new BluetoothSocket(BluetoothSocket.TYPE_SCO, -1, true, true, this, -1, null); } /** * Check that a pin is valid and convert to byte array. * * Bluetooth pin's are 1 to 16 bytes of UTF-8 characters. * @param pin pin as java String * @return the pin code as a UTF-8 byte array, or null if it is an invalid * Bluetooth pin. * @hide */ public static byte[] convertPinToBytes(String pin) { if (pin == null) { return null; } byte[] pinBytes; try { pinBytes = pin.getBytes("UTF-8"); } catch (UnsupportedEncodingException uee) { Log.e(TAG, "UTF-8 not supported?!?"); // this should not happen return null; } if (pinBytes.length <= 0 || pinBytes.length > 16) { return null; } return pinBytes; } }