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android / platform / frameworks / base / a996b06b6f28878e29badb9c3f8ac132ec39f86b / . / core / java / android / bluetooth / BluetoothAdapter.java
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/*
* Copyright 2009-2016 The Android Open Source Project
* Copyright 2015 Samsung LSI
*
* 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.Manifest;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.RequiresPermission;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.annotation.SystemApi;
import android.app.ActivityThread;
import android.bluetooth.BluetoothProfile.ConnectionPolicy;
import android.bluetooth.le.BluetoothLeAdvertiser;
import android.bluetooth.le.BluetoothLeScanner;
import android.bluetooth.le.PeriodicAdvertisingManager;
import android.bluetooth.le.ScanCallback;
import android.bluetooth.le.ScanFilter;
import android.bluetooth.le.ScanRecord;
import android.bluetooth.le.ScanResult;
import android.bluetooth.le.ScanSettings;
import android.compat.annotation.UnsupportedAppUsage;
import android.content.Context;
import android.os.BatteryStats;
import android.os.Binder;
import android.os.IBinder;
import android.os.ParcelUuid;
import android.os.RemoteException;
import android.os.ResultReceiver;
import android.os.ServiceManager;
import android.os.SynchronousResultReceiver;
import android.os.SystemProperties;
import android.util.Log;
import android.util.Pair;
import java.io.IOException;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.locks.ReentrantReadWriteLock;
/**
* Represents the local device Bluetooth adapter. The {@link BluetoothAdapter}
* lets you perform fundamental Bluetooth tasks, such as initiate
* device discovery, query a list of bonded (paired) devices,
* instantiate a {@link BluetoothDevice} using a known MAC address, and create
* a {@link BluetoothServerSocket} to listen for connection requests from other
* devices, and start a scan for Bluetooth LE devices.
*
* <p>To get a {@link BluetoothAdapter} representing the local Bluetooth
* adapter, call the {@link BluetoothManager#getAdapter} function on {@link BluetoothManager}.
* On JELLY_BEAN_MR1 and below you will need to use the static {@link #getDefaultAdapter}
* method instead.
* </p><p>
* Fundamentally, this is your starting point for all
* Bluetooth actions. Once you have the local adapter, you can get a set of
* {@link BluetoothDevice} objects representing all paired devices with
* {@link #getBondedDevices()}; start device discovery with
* {@link #startDiscovery()}; or create a {@link BluetoothServerSocket} to
* listen for incoming RFComm connection requests with {@link
* #listenUsingRfcommWithServiceRecord(String, UUID)}; listen for incoming L2CAP Connection-oriented
* Channels (CoC) connection requests with {@link #listenUsingL2capChannel()}; or start a scan for
* Bluetooth LE devices with {@link #startLeScan(LeScanCallback callback)}.
* </p>
* <p>This class is thread safe.</p>
* <p class="note"><strong>Note:</strong>
* Most methods require the {@link android.Manifest.permission#BLUETOOTH}
* permission and some also require the
* {@link android.Manifest.permission#BLUETOOTH_ADMIN} permission.
* </p>
* <div class="special reference">
* <h3>Developer Guides</h3>
* <p>
* For more information about using Bluetooth, read the <a href=
* "{@docRoot}guide/topics/connectivity/bluetooth.html">Bluetooth</a> developer
* guide.
* </p>
* </div>
*
* {@see BluetoothDevice}
* {@see BluetoothServerSocket}
*/
public final class BluetoothAdapter {
private static final String TAG = "BluetoothAdapter";
private static final boolean DBG = true;
private static final boolean VDBG = false;
/**
* Default MAC address reported to a client that does not have the
* android.permission.LOCAL_MAC_ADDRESS permission.
*
* @hide
*/
public static final String DEFAULT_MAC_ADDRESS = "02:00:00:00:00:00";
/**
* 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:
* <p><code>Intent.getIntExtra(BluetoothAdapter.EXTRA_STATE,
* BluetoothAdapter.ERROR)</code>
*/
public static final int ERROR = Integer.MIN_VALUE;
/**
* Broadcast Action: The state of the local Bluetooth adapter has been
* changed.
* <p>For example, Bluetooth has been turned on or off.
* <p>Always contains the extra fields {@link #EXTRA_STATE} and {@link
* #EXTRA_PREVIOUS_STATE} containing the new and old states
* respectively.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
ACTION_STATE_CHANGED = "android.bluetooth.adapter.action.STATE_CHANGED";
/**
* Used as an int extra field in {@link #ACTION_STATE_CHANGED}
* intents to request the current power state. Possible values are:
* {@link #STATE_OFF},
* {@link #STATE_TURNING_ON},
* {@link #STATE_ON},
* {@link #STATE_TURNING_OFF},
*/
public static final String EXTRA_STATE = "android.bluetooth.adapter.extra.STATE";
/**
* Used as an int extra field in {@link #ACTION_STATE_CHANGED}
* intents to request the previous power state. Possible values are:
* {@link #STATE_OFF},
* {@link #STATE_TURNING_ON},
* {@link #STATE_ON},
* {@link #STATE_TURNING_OFF}
*/
public static final String EXTRA_PREVIOUS_STATE =
"android.bluetooth.adapter.extra.PREVIOUS_STATE";
/** @hide */
@IntDef(prefix = { "STATE_" }, value = {
STATE_OFF,
STATE_TURNING_ON,
STATE_ON,
STATE_TURNING_OFF,
STATE_BLE_TURNING_ON,
STATE_BLE_ON,
STATE_BLE_TURNING_OFF
})
@Retention(RetentionPolicy.SOURCE)
public @interface AdapterState {}
/**
* Indicates the local Bluetooth adapter is off.
*/
public static final int STATE_OFF = 10;
/**
* Indicates the local Bluetooth adapter is turning on. However local
* clients should wait for {@link #STATE_ON} before attempting to
* use the adapter.
*/
public static final int STATE_TURNING_ON = 11;
/**
* Indicates the local Bluetooth adapter is on, and ready for use.
*/
public static final int STATE_ON = 12;
/**
* Indicates the local Bluetooth adapter is turning off. Local clients
* should immediately attempt graceful disconnection of any remote links.
*/
public static final int STATE_TURNING_OFF = 13;
/**
* Indicates the local Bluetooth adapter is turning Bluetooth LE mode on.
*
* @hide
*/
public static final int STATE_BLE_TURNING_ON = 14;
/**
* Indicates the local Bluetooth adapter is in LE only mode.
*
* @hide
*/
public static final int STATE_BLE_ON = 15;
/**
* Indicates the local Bluetooth adapter is turning off LE only mode.
*
* @hide
*/
public static final int STATE_BLE_TURNING_OFF = 16;
/**
* UUID of the GATT Read Characteristics for LE_PSM value.
*
* @hide
*/
public static final UUID LE_PSM_CHARACTERISTIC_UUID =
UUID.fromString("2d410339-82b6-42aa-b34e-e2e01df8cc1a");
/**
* Human-readable string helper for AdapterState
*
* @hide
*/
public static String nameForState(@AdapterState int state) {
switch (state) {
case STATE_OFF:
return "OFF";
case STATE_TURNING_ON:
return "TURNING_ON";
case STATE_ON:
return "ON";
case STATE_TURNING_OFF:
return "TURNING_OFF";
case STATE_BLE_TURNING_ON:
return "BLE_TURNING_ON";
case STATE_BLE_ON:
return "BLE_ON";
case STATE_BLE_TURNING_OFF:
return "BLE_TURNING_OFF";
default:
return "?!?!? (" + state + ")";
}
}
/**
* Activity Action: Show a system activity that requests discoverable mode.
* This activity will also request the user to turn on Bluetooth if it
* is not currently enabled.
* <p>Discoverable mode is equivalent to {@link
* #SCAN_MODE_CONNECTABLE_DISCOVERABLE}. It allows remote devices to see
* this Bluetooth adapter when they perform a discovery.
* <p>For privacy, Android is not discoverable by default.
* <p>The sender of this Intent can optionally use extra field {@link
* #EXTRA_DISCOVERABLE_DURATION} to request the duration of
* discoverability. Currently the default duration is 120 seconds, and
* maximum duration is capped at 300 seconds for each request.
* <p>Notification of the result of this activity is posted using the
* {@link android.app.Activity#onActivityResult} callback. The
* <code>resultCode</code>
* will be the duration (in seconds) of discoverability or
* {@link android.app.Activity#RESULT_CANCELED} if the user rejected
* discoverability or an error has occurred.
* <p>Applications can also listen for {@link #ACTION_SCAN_MODE_CHANGED}
* for global notification whenever the scan mode changes. For example, an
* application can be notified when the device has ended discoverability.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
*/
@SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) public static final String
ACTION_REQUEST_DISCOVERABLE = "android.bluetooth.adapter.action.REQUEST_DISCOVERABLE";
/**
* Used as an optional int extra field in {@link
* #ACTION_REQUEST_DISCOVERABLE} intents to request a specific duration
* for discoverability in seconds. The current default is 120 seconds, and
* requests over 300 seconds will be capped. These values could change.
*/
public static final String EXTRA_DISCOVERABLE_DURATION =
"android.bluetooth.adapter.extra.DISCOVERABLE_DURATION";
/**
* Activity Action: Show a system activity that allows the user to turn on
* Bluetooth.
* <p>This system activity will return once Bluetooth has completed turning
* on, or the user has decided not to turn Bluetooth on.
* <p>Notification of the result of this activity is posted using the
* {@link android.app.Activity#onActivityResult} callback. The
* <code>resultCode</code>
* will be {@link android.app.Activity#RESULT_OK} if Bluetooth has been
* turned on or {@link android.app.Activity#RESULT_CANCELED} if the user
* has rejected the request or an error has occurred.
* <p>Applications can also listen for {@link #ACTION_STATE_CHANGED}
* for global notification whenever Bluetooth is turned on or off.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
*/
@SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) public static final String
ACTION_REQUEST_ENABLE = "android.bluetooth.adapter.action.REQUEST_ENABLE";
/**
* Activity Action: Show a system activity that allows the user to turn off
* Bluetooth. This is used only if permission review is enabled which is for
* apps targeting API less than 23 require a permission review before any of
* the app's components can run.
* <p>This system activity will return once Bluetooth has completed turning
* off, or the user has decided not to turn Bluetooth off.
* <p>Notification of the result of this activity is posted using the
* {@link android.app.Activity#onActivityResult} callback. The
* <code>resultCode</code>
* will be {@link android.app.Activity#RESULT_OK} if Bluetooth has been
* turned off or {@link android.app.Activity#RESULT_CANCELED} if the user
* has rejected the request or an error has occurred.
* <p>Applications can also listen for {@link #ACTION_STATE_CHANGED}
* for global notification whenever Bluetooth is turned on or off.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
*
* @hide
*/
@SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) public static final String
ACTION_REQUEST_DISABLE = "android.bluetooth.adapter.action.REQUEST_DISABLE";
/**
* Activity Action: Show a system activity that allows user to enable BLE scans even when
* Bluetooth is turned off.<p>
*
* Notification of result of this activity is posted using
* {@link android.app.Activity#onActivityResult}. The <code>resultCode</code> will be
* {@link android.app.Activity#RESULT_OK} if BLE scan always available setting is turned on or
* {@link android.app.Activity#RESULT_CANCELED} if the user has rejected the request or an
* error occurred.
*
* @hide
*/
@SystemApi
@SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
public static final String ACTION_REQUEST_BLE_SCAN_ALWAYS_AVAILABLE =
"android.bluetooth.adapter.action.REQUEST_BLE_SCAN_ALWAYS_AVAILABLE";
/**
* Broadcast Action: Indicates the Bluetooth scan mode of the local Adapter
* has changed.
* <p>Always contains the extra fields {@link #EXTRA_SCAN_MODE} and {@link
* #EXTRA_PREVIOUS_SCAN_MODE} containing the new and old scan modes
* respectively.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
ACTION_SCAN_MODE_CHANGED = "android.bluetooth.adapter.action.SCAN_MODE_CHANGED";
/**
* Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED}
* intents to request the current scan mode. Possible values are:
* {@link #SCAN_MODE_NONE},
* {@link #SCAN_MODE_CONNECTABLE},
* {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE},
*/
public static final String EXTRA_SCAN_MODE = "android.bluetooth.adapter.extra.SCAN_MODE";
/**
* Used as an int extra field in {@link #ACTION_SCAN_MODE_CHANGED}
* intents to request the previous scan mode. Possible values are:
* {@link #SCAN_MODE_NONE},
* {@link #SCAN_MODE_CONNECTABLE},
* {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE},
*/
public static final String EXTRA_PREVIOUS_SCAN_MODE =
"android.bluetooth.adapter.extra.PREVIOUS_SCAN_MODE";
/** @hide */
@IntDef(prefix = { "SCAN_" }, value = {
SCAN_MODE_NONE,
SCAN_MODE_CONNECTABLE,
SCAN_MODE_CONNECTABLE_DISCOVERABLE
})
@Retention(RetentionPolicy.SOURCE)
public @interface ScanMode {}
/**
* Indicates that both inquiry scan and page scan are disabled on the local
* Bluetooth adapter. Therefore this device is neither discoverable
* nor connectable from remote Bluetooth devices.
*/
public static final int SCAN_MODE_NONE = 20;
/**
* Indicates that inquiry scan is disabled, but page scan is enabled on the
* local Bluetooth adapter. Therefore this device is not discoverable from
* remote Bluetooth devices, but is connectable from remote devices that
* have previously discovered this device.
*/
public static final int SCAN_MODE_CONNECTABLE = 21;
/**
* Indicates that both inquiry scan and page scan are enabled on the local
* Bluetooth adapter. Therefore this device is both discoverable and
* connectable from remote Bluetooth devices.
*/
public static final int SCAN_MODE_CONNECTABLE_DISCOVERABLE = 23;
/**
* Device only has a display.
*
* @hide
*/
public static final int IO_CAPABILITY_OUT = 0;
/**
* Device has a display and the ability to input Yes/No.
*
* @hide
*/
public static final int IO_CAPABILITY_IO = 1;
/**
* Device only has a keyboard for entry but no display.
*
* @hide
*/
public static final int IO_CAPABILITY_IN = 2;
/**
* Device has no Input or Output capability.
*
* @hide
*/
public static final int IO_CAPABILITY_NONE = 3;
/**
* Device has a display and a full keyboard.
*
* @hide
*/
public static final int IO_CAPABILITY_KBDISP = 4;
/**
* Maximum range value for Input/Output capabilities.
*
* <p>This should be updated when adding a new Input/Output capability. Other code
* like validation depends on this being accurate.
*
* @hide
*/
public static final int IO_CAPABILITY_MAX = 5;
/**
* The Input/Output capability of the device is unknown.
*
* @hide
*/
public static final int IO_CAPABILITY_UNKNOWN = 255;
/** @hide */
@IntDef({IO_CAPABILITY_OUT, IO_CAPABILITY_IO, IO_CAPABILITY_IN, IO_CAPABILITY_NONE,
IO_CAPABILITY_KBDISP})
@Retention(RetentionPolicy.SOURCE)
public @interface IoCapability {}
/** @hide */
@IntDef(prefix = "ACTIVE_DEVICE_", value = {ACTIVE_DEVICE_AUDIO,
ACTIVE_DEVICE_PHONE_CALL, ACTIVE_DEVICE_ALL})
@Retention(RetentionPolicy.SOURCE)
public @interface ActiveDeviceUse {}
/**
* Use the specified device for audio (a2dp and hearing aid profile)
*
* @hide
*/
@SystemApi
public static final int ACTIVE_DEVICE_AUDIO = 0;
/**
* Use the specified device for phone calls (headset profile and hearing
* aid profile)
*
* @hide
*/
@SystemApi
public static final int ACTIVE_DEVICE_PHONE_CALL = 1;
/**
* Use the specified device for a2dp, hearing aid profile, and headset profile
*
* @hide
*/
@SystemApi
public static final int ACTIVE_DEVICE_ALL = 2;
/**
* Broadcast Action: The local Bluetooth adapter has started the remote
* device discovery process.
* <p>This usually involves an inquiry scan of about 12 seconds, followed
* by a page scan of each new device to retrieve its Bluetooth name.
* <p>Register for {@link BluetoothDevice#ACTION_FOUND} to be notified as
* remote Bluetooth devices are found.
* <p>Device discovery is a heavyweight procedure. New connections to
* remote Bluetooth devices should not be attempted while discovery is in
* progress, and existing connections will experience limited bandwidth
* and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing
* discovery.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
ACTION_DISCOVERY_STARTED = "android.bluetooth.adapter.action.DISCOVERY_STARTED";
/**
* Broadcast Action: The local Bluetooth adapter has finished the device
* discovery process.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
ACTION_DISCOVERY_FINISHED = "android.bluetooth.adapter.action.DISCOVERY_FINISHED";
/**
* Broadcast Action: The local Bluetooth adapter has changed its friendly
* Bluetooth name.
* <p>This name is visible to remote Bluetooth devices.
* <p>Always contains the extra field {@link #EXTRA_LOCAL_NAME} containing
* the name.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
ACTION_LOCAL_NAME_CHANGED = "android.bluetooth.adapter.action.LOCAL_NAME_CHANGED";
/**
* Used as a String extra field in {@link #ACTION_LOCAL_NAME_CHANGED}
* intents to request the local Bluetooth name.
*/
public static final String EXTRA_LOCAL_NAME = "android.bluetooth.adapter.extra.LOCAL_NAME";
/**
* Intent used to broadcast the change in connection state of the local
* Bluetooth adapter to a profile of the remote device. When the adapter is
* not connected to any profiles of any remote devices and it attempts a
* connection to a profile this intent will be sent. Once connected, this intent
* will not be sent for any more connection attempts to any profiles of any
* remote device. When the adapter disconnects from the last profile its
* connected to of any remote device, this intent will be sent.
*
* <p> This intent is useful for applications that are only concerned about
* whether the local adapter is connected to any profile of any device and
* are not really concerned about which profile. For example, an application
* which displays an icon to display whether Bluetooth is connected or not
* can use this intent.
*
* <p>This intent will have 3 extras:
* {@link #EXTRA_CONNECTION_STATE} - The current connection state.
* {@link #EXTRA_PREVIOUS_CONNECTION_STATE}- The previous connection state.
* {@link BluetoothDevice#EXTRA_DEVICE} - The remote device.
*
* {@link #EXTRA_CONNECTION_STATE} or {@link #EXTRA_PREVIOUS_CONNECTION_STATE}
* can be any of {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING},
* {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} to receive.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) public static final String
ACTION_CONNECTION_STATE_CHANGED =
"android.bluetooth.adapter.action.CONNECTION_STATE_CHANGED";
/**
* Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED}
*
* This extra represents the current connection state.
*/
public static final String EXTRA_CONNECTION_STATE =
"android.bluetooth.adapter.extra.CONNECTION_STATE";
/**
* Extra used by {@link #ACTION_CONNECTION_STATE_CHANGED}
*
* This extra represents the previous connection state.
*/
public static final String EXTRA_PREVIOUS_CONNECTION_STATE =
"android.bluetooth.adapter.extra.PREVIOUS_CONNECTION_STATE";
/**
* Broadcast Action: The Bluetooth adapter state has changed in LE only mode.
*
* @hide
*/
@SystemApi public static final String ACTION_BLE_STATE_CHANGED =
"android.bluetooth.adapter.action.BLE_STATE_CHANGED";
/**
* Intent used to broadcast the change in the Bluetooth address
* of the local Bluetooth adapter.
* <p>Always contains the extra field {@link
* #EXTRA_BLUETOOTH_ADDRESS} containing the Bluetooth address.
*
* Note: only system level processes are allowed to send this
* defined broadcast.
*
* @hide
*/
public static final String ACTION_BLUETOOTH_ADDRESS_CHANGED =
"android.bluetooth.adapter.action.BLUETOOTH_ADDRESS_CHANGED";
/**
* Used as a String extra field in {@link
* #ACTION_BLUETOOTH_ADDRESS_CHANGED} intent to store the local
* Bluetooth address.
*
* @hide
*/
public static final String EXTRA_BLUETOOTH_ADDRESS =
"android.bluetooth.adapter.extra.BLUETOOTH_ADDRESS";
/**
* Broadcast Action: The notifys Bluetooth ACL connected event. This will be
* by BLE Always on enabled application to know the ACL_CONNECTED event
* when Bluetooth state in STATE_BLE_ON. This denotes GATT connection
* as Bluetooth LE is the only feature available in STATE_BLE_ON
*
* This is counterpart of {@link BluetoothDevice#ACTION_ACL_CONNECTED} which
* works in Bluetooth state STATE_ON
*
* @hide
*/
public static final String ACTION_BLE_ACL_CONNECTED =
"android.bluetooth.adapter.action.BLE_ACL_CONNECTED";
/**
* Broadcast Action: The notifys Bluetooth ACL connected event. This will be
* by BLE Always on enabled application to know the ACL_DISCONNECTED event
* when Bluetooth state in STATE_BLE_ON. This denotes GATT disconnection as Bluetooth
* LE is the only feature available in STATE_BLE_ON
*
* This is counterpart of {@link BluetoothDevice#ACTION_ACL_DISCONNECTED} which
* works in Bluetooth state STATE_ON
*
* @hide
*/
public static final String ACTION_BLE_ACL_DISCONNECTED =
"android.bluetooth.adapter.action.BLE_ACL_DISCONNECTED";
/** The profile is in disconnected state */
public static final int STATE_DISCONNECTED = BluetoothProtoEnums.CONNECTION_STATE_DISCONNECTED;
/** The profile is in connecting state */
public static final int STATE_CONNECTING = BluetoothProtoEnums.CONNECTION_STATE_CONNECTING;
/** The profile is in connected state */
public static final int STATE_CONNECTED = BluetoothProtoEnums.CONNECTION_STATE_CONNECTED;
/** The profile is in disconnecting state */
public static final int STATE_DISCONNECTING =
BluetoothProtoEnums.CONNECTION_STATE_DISCONNECTING;
/** @hide */
public static final String BLUETOOTH_MANAGER_SERVICE = "bluetooth_manager";
private final IBinder mToken;
/**
* When creating a ServerSocket using listenUsingRfcommOn() or
* listenUsingL2capOn() use SOCKET_CHANNEL_AUTO_STATIC to create
* a ServerSocket that auto assigns a channel number to the first
* bluetooth socket.
* The channel number assigned to this first Bluetooth Socket will
* be stored in the ServerSocket, and reused for subsequent Bluetooth
* sockets.
*
* @hide
*/
public static final int SOCKET_CHANNEL_AUTO_STATIC_NO_SDP = -2;
private static final int ADDRESS_LENGTH = 17;
/**
* Lazily initialized singleton. Guaranteed final after first object
* constructed.
*/
private static BluetoothAdapter sAdapter;
private static BluetoothLeScanner sBluetoothLeScanner;
private static BluetoothLeAdvertiser sBluetoothLeAdvertiser;
private static PeriodicAdvertisingManager sPeriodicAdvertisingManager;
private final IBluetoothManager mManagerService;
@UnsupportedAppUsage
private IBluetooth mService;
private Context mContext;
private final ReentrantReadWriteLock mServiceLock = new ReentrantReadWriteLock();
private final Object mLock = new Object();
private final Map<LeScanCallback, ScanCallback> mLeScanClients;
private static final Map<BluetoothDevice, List<Pair<OnMetadataChangedListener, Executor>>>
sMetadataListeners = new HashMap<>();
/**
* Bluetooth metadata listener. Overrides the default BluetoothMetadataListener
* implementation.
*/
private static final IBluetoothMetadataListener sBluetoothMetadataListener =
new IBluetoothMetadataListener.Stub() {
@Override
public void onMetadataChanged(BluetoothDevice device, int key, byte[] value) {
synchronized (sMetadataListeners) {
if (sMetadataListeners.containsKey(device)) {
List<Pair<OnMetadataChangedListener, Executor>> list =
sMetadataListeners.get(device);
for (Pair<OnMetadataChangedListener, Executor> pair : list) {
OnMetadataChangedListener listener = pair.first;
Executor executor = pair.second;
executor.execute(() -> {
listener.onMetadataChanged(device, key, value);
});
}
}
}
return;
}
};
/**
* Get a handle to the default local Bluetooth adapter.
* <p>Currently Android only supports one Bluetooth adapter, but the API
* could be extended to support more. This will always return the default
* adapter.
* </p>
*
* @return the default local adapter, or null if Bluetooth is not supported on this hardware
* platform
*/
public static synchronized BluetoothAdapter getDefaultAdapter() {
if (sAdapter == null) {
IBinder b = ServiceManager.getService(BLUETOOTH_MANAGER_SERVICE);
if (b != null) {
IBluetoothManager managerService = IBluetoothManager.Stub.asInterface(b);
sAdapter = new BluetoothAdapter(managerService);
} else {
Log.e(TAG, "Bluetooth binder is null");
}
}
return sAdapter;
}
/**
* Use {@link #getDefaultAdapter} to get the BluetoothAdapter instance.
*/
BluetoothAdapter(IBluetoothManager managerService) {
if (managerService == null) {
throw new IllegalArgumentException("bluetooth manager service is null");
}
try {
mServiceLock.writeLock().lock();
mService = managerService.registerAdapter(mManagerCallback);
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.writeLock().unlock();
}
mManagerService = managerService;
mLeScanClients = new HashMap<LeScanCallback, ScanCallback>();
mToken = new Binder();
}
/**
* Get a {@link BluetoothDevice} object for the given Bluetooth hardware
* address.
* <p>Valid Bluetooth hardware addresses must be upper case, in a format
* such as "00:11:22:33:AA:BB". The helper {@link #checkBluetoothAddress} is
* available to validate a Bluetooth address.
* <p>A {@link BluetoothDevice} will always be returned for a valid
* hardware address, even if this adapter has never seen that device.
*
* @param address valid Bluetooth MAC address
* @throws IllegalArgumentException if address is invalid
*/
public BluetoothDevice getRemoteDevice(String address) {
return new BluetoothDevice(address);
}
/**
* Get a {@link BluetoothDevice} object for the given Bluetooth hardware
* address.
* <p>Valid Bluetooth hardware addresses must be 6 bytes. This method
* expects the address in network byte order (MSB first).
* <p>A {@link BluetoothDevice} will always be returned for a valid
* hardware address, even if this adapter has never seen that device.
*
* @param address Bluetooth MAC address (6 bytes)
* @throws IllegalArgumentException if address is invalid
*/
public BluetoothDevice getRemoteDevice(byte[] address) {
if (address == null || address.length != 6) {
throw new IllegalArgumentException("Bluetooth address must have 6 bytes");
}
return new BluetoothDevice(
String.format(Locale.US, "%02X:%02X:%02X:%02X:%02X:%02X", address[0], address[1],
address[2], address[3], address[4], address[5]));
}
/**
* Returns a {@link BluetoothLeAdvertiser} object for Bluetooth LE Advertising operations.
* Will return null if Bluetooth is turned off or if Bluetooth LE Advertising is not
* supported on this device.
* <p>
* Use {@link #isMultipleAdvertisementSupported()} to check whether LE Advertising is supported
* on this device before calling this method.
*/
public BluetoothLeAdvertiser getBluetoothLeAdvertiser() {
if (!getLeAccess()) {
return null;
}
synchronized (mLock) {
if (sBluetoothLeAdvertiser == null) {
sBluetoothLeAdvertiser = new BluetoothLeAdvertiser(mManagerService);
}
}
return sBluetoothLeAdvertiser;
}
/**
* Returns a {@link PeriodicAdvertisingManager} object for Bluetooth LE Periodic Advertising
* operations. Will return null if Bluetooth is turned off or if Bluetooth LE Periodic
* Advertising is not supported on this device.
* <p>
* Use {@link #isLePeriodicAdvertisingSupported()} to check whether LE Periodic Advertising is
* supported on this device before calling this method.
*
* @hide
*/
public PeriodicAdvertisingManager getPeriodicAdvertisingManager() {
if (!getLeAccess()) {
return null;
}
if (!isLePeriodicAdvertisingSupported()) {
return null;
}
synchronized (mLock) {
if (sPeriodicAdvertisingManager == null) {
sPeriodicAdvertisingManager = new PeriodicAdvertisingManager(mManagerService);
}
}
return sPeriodicAdvertisingManager;
}
/**
* Returns a {@link BluetoothLeScanner} object for Bluetooth LE scan operations.
*/
public BluetoothLeScanner getBluetoothLeScanner() {
if (!getLeAccess()) {
return null;
}
synchronized (mLock) {
if (sBluetoothLeScanner == null) {
sBluetoothLeScanner = new BluetoothLeScanner(mManagerService, getOpPackageName(),
getFeatureId());
}
}
return sBluetoothLeScanner;
}
/**
* Return true if Bluetooth is currently enabled and ready for use.
* <p>Equivalent to:
* <code>getBluetoothState() == STATE_ON</code>
*
* @return true if the local adapter is turned on
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
public boolean isEnabled() {
return getState() == BluetoothAdapter.STATE_ON;
}
/**
* Return true if Bluetooth LE(Always BLE On feature) is currently
* enabled and ready for use
* <p>This returns true if current state is either STATE_ON or STATE_BLE_ON
*
* @return true if the local Bluetooth LE adapter is turned on
* @hide
*/
@SystemApi
public boolean isLeEnabled() {
final int state = getLeState();
if (DBG) {
Log.d(TAG, "isLeEnabled(): " + BluetoothAdapter.nameForState(state));
}
return (state == BluetoothAdapter.STATE_ON
|| state == BluetoothAdapter.STATE_BLE_ON
|| state == BluetoothAdapter.STATE_TURNING_ON
|| state == BluetoothAdapter.STATE_TURNING_OFF);
}
/**
* Turns off Bluetooth LE which was earlier turned on by calling enableBLE().
*
* <p> If the internal Adapter state is STATE_BLE_ON, this would trigger the transition
* to STATE_OFF and completely shut-down Bluetooth
*
* <p> If the Adapter state is STATE_ON, This would unregister the existance of
* special Bluetooth LE application and hence the further turning off of Bluetooth
* from UI would ensure the complete turn-off of Bluetooth rather than staying back
* BLE only state
*
* <p>This is an asynchronous call: it will return immediately, and
* clients should listen for {@link #ACTION_BLE_STATE_CHANGED}
* to be notified of subsequent adapter state changes If this call returns
* true, then the adapter state will immediately transition from {@link
* #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time
* later transition to either {@link #STATE_BLE_ON} or {@link
* #STATE_OFF} based on the existance of the further Always BLE ON enabled applications
* If this call returns false then there was an
* immediate problem that will prevent the QAdapter from being turned off -
* such as the QAadapter already being turned off.
*
* @return true to indicate success, or false on immediate error
* @hide
*/
@SystemApi
public boolean disableBLE() {
if (!isBleScanAlwaysAvailable()) {
return false;
}
int state = getLeState();
if (state == BluetoothAdapter.STATE_ON || state == BluetoothAdapter.STATE_BLE_ON) {
String packageName = ActivityThread.currentPackageName();
if (DBG) {
Log.d(TAG, "disableBLE(): de-registering " + packageName);
}
try {
mManagerService.updateBleAppCount(mToken, false, packageName);
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
return true;
}
if (DBG) {
Log.d(TAG, "disableBLE(): Already disabled");
}
return false;
}
/**
* Applications who want to only use Bluetooth Low Energy (BLE) can call enableBLE.
*
* enableBLE registers the existence of an app using only LE functions.
*
* enableBLE may enable Bluetooth to an LE only mode so that an app can use
* LE related features (BluetoothGatt or BluetoothGattServer classes)
*
* If the user disables Bluetooth while an app is registered to use LE only features,
* Bluetooth will remain on in LE only mode for the app.
*
* When Bluetooth is in LE only mode, it is not shown as ON to the UI.
*
* <p>This is an asynchronous call: it returns immediately, and
* clients should listen for {@link #ACTION_BLE_STATE_CHANGED}
* to be notified of adapter state changes.
*
* If this call returns * true, then the adapter state is either in a mode where
* LE is available, or will transition from {@link #STATE_OFF} to {@link #STATE_BLE_TURNING_ON},
* and some time later transition to either {@link #STATE_OFF} or {@link #STATE_BLE_ON}.
*
* If this call returns false then there was an immediate problem that prevents the
* adapter from being turned on - such as Airplane mode.
*
* {@link #ACTION_BLE_STATE_CHANGED} returns the Bluetooth Adapter's various
* states, It includes all the classic Bluetooth Adapter states along with
* internal BLE only states
*
* @return true to indicate Bluetooth LE will be available, or false on immediate error
* @hide
*/
@SystemApi
public boolean enableBLE() {
if (!isBleScanAlwaysAvailable()) {
return false;
}
try {
String packageName = ActivityThread.currentPackageName();
mManagerService.updateBleAppCount(mToken, true, packageName);
if (isLeEnabled()) {
if (DBG) {
Log.d(TAG, "enableBLE(): Bluetooth already enabled");
}
return true;
}
if (DBG) {
Log.d(TAG, "enableBLE(): Calling enable");
}
return mManagerService.enable(packageName);
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
return false;
}
/**
* Get the current state of the local Bluetooth adapter.
* <p>Possible return values are
* {@link #STATE_OFF},
* {@link #STATE_TURNING_ON},
* {@link #STATE_ON},
* {@link #STATE_TURNING_OFF}.
*
* @return current state of Bluetooth adapter
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
@AdapterState
public int getState() {
int state = BluetoothAdapter.STATE_OFF;
try {
mServiceLock.readLock().lock();
if (mService != null) {
state = mService.getState();
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
// Consider all internal states as OFF
if (state == BluetoothAdapter.STATE_BLE_ON || state == BluetoothAdapter.STATE_BLE_TURNING_ON
|| state == BluetoothAdapter.STATE_BLE_TURNING_OFF) {
if (VDBG) {
Log.d(TAG, "Consider " + BluetoothAdapter.nameForState(state) + " state as OFF");
}
state = BluetoothAdapter.STATE_OFF;
}
if (VDBG) {
Log.d(TAG, "" + hashCode() + ": getState(). Returning " + BluetoothAdapter.nameForState(
state));
}
return state;
}
/**
* Get the current state of the local Bluetooth adapter
* <p>This returns current internal state of Adapter including LE ON/OFF
*
* <p>Possible return values are
* {@link #STATE_OFF},
* {@link #STATE_BLE_TURNING_ON},
* {@link #STATE_BLE_ON},
* {@link #STATE_TURNING_ON},
* {@link #STATE_ON},
* {@link #STATE_TURNING_OFF},
* {@link #STATE_BLE_TURNING_OFF}.
*
* @return current state of Bluetooth adapter
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
@AdapterState
@UnsupportedAppUsage(publicAlternatives = "Use {@link #getState()} instead to determine "
+ "whether you can use BLE & BT classic.")
public int getLeState() {
int state = BluetoothAdapter.STATE_OFF;
try {
mServiceLock.readLock().lock();
if (mService != null) {
state = mService.getState();
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
if (VDBG) {
Log.d(TAG, "getLeState() returning " + BluetoothAdapter.nameForState(state));
}
return state;
}
boolean getLeAccess() {
if (getLeState() == STATE_ON) {
return true;
} else if (getLeState() == STATE_BLE_ON) {
return true; // TODO: FILTER SYSTEM APPS HERE <--
}
return false;
}
/**
* Turn on the local Bluetooth adapter&mdash;do not use without explicit
* user action to turn on Bluetooth.
* <p>This powers on the underlying Bluetooth hardware, and starts all
* Bluetooth system services.
* <p class="caution"><strong>Bluetooth should never be enabled without
* direct user consent</strong>. If you want to turn on Bluetooth in order
* to create a wireless connection, you should use the {@link
* #ACTION_REQUEST_ENABLE} Intent, which will raise a dialog that requests
* user permission to turn on Bluetooth. The {@link #enable()} method is
* provided only for applications that include a user interface for changing
* system settings, such as a "power manager" app.</p>
* <p>This is an asynchronous call: it will return immediately, and
* clients should listen for {@link #ACTION_STATE_CHANGED}
* to be notified of subsequent adapter state changes. If this call returns
* true, then the adapter state will immediately transition from {@link
* #STATE_OFF} to {@link #STATE_TURNING_ON}, and some time
* later transition to either {@link #STATE_OFF} or {@link
* #STATE_ON}. If this call returns false then there was an
* immediate problem that will prevent the adapter from being turned on -
* such as Airplane mode, or the adapter is already turned on.
*
* @return true to indicate adapter startup has begun, or false on immediate error
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean enable() {
if (isEnabled()) {
if (DBG) {
Log.d(TAG, "enable(): BT already enabled!");
}
return true;
}
try {
return mManagerService.enable(ActivityThread.currentPackageName());
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
return false;
}
/**
* Turn off the local Bluetooth adapter&mdash;do not use without explicit
* user action to turn off Bluetooth.
* <p>This gracefully shuts down all Bluetooth connections, stops Bluetooth
* system services, and powers down the underlying Bluetooth hardware.
* <p class="caution"><strong>Bluetooth should never be disabled without
* direct user consent</strong>. The {@link #disable()} method is
* provided only for applications that include a user interface for changing
* system settings, such as a "power manager" app.</p>
* <p>This is an asynchronous call: it will return immediately, and
* clients should listen for {@link #ACTION_STATE_CHANGED}
* to be notified of subsequent adapter state changes. If this call returns
* true, then the adapter state will immediately transition from {@link
* #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time
* later transition to either {@link #STATE_OFF} or {@link
* #STATE_ON}. If this call returns false then there was an
* immediate problem that will prevent the adapter from being turned off -
* such as the adapter already being turned off.
*
* @return true to indicate adapter shutdown has begun, or false on immediate error
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean disable() {
try {
return mManagerService.disable(ActivityThread.currentPackageName(), true);
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
return false;
}
/**
* Turn off the local Bluetooth adapter and don't persist the setting.
*
* <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN}
* permission
*
* @return true to indicate adapter shutdown has begun, or false on immediate error
* @hide
*/
@UnsupportedAppUsage
public boolean disable(boolean persist) {
try {
return mManagerService.disable(ActivityThread.currentPackageName(), persist);
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
return false;
}
/**
* Returns the hardware address of the local Bluetooth adapter.
* <p>For example, "00:11:22:AA:BB:CC".
*
* @return Bluetooth hardware address as string
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
public String getAddress() {
try {
return mManagerService.getAddress();
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
return null;
}
/**
* Get the friendly Bluetooth name of the local Bluetooth adapter.
* <p>This name is visible to remote Bluetooth devices.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
*
* @return the Bluetooth name, or null on error
*/
public String getName() {
try {
return mManagerService.getName();
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
return null;
}
/**
* Factory reset bluetooth settings.
*
* @return true to indicate that the config file was successfully cleared
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
public boolean factoryReset() {
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.factoryReset();
}
Log.e(TAG, "factoryReset(): IBluetooth Service is null");
SystemProperties.set("persist.bluetooth.factoryreset", "true");
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Get the UUIDs supported by the local Bluetooth adapter.
*
* @return the UUIDs supported by the local Bluetooth Adapter.
* @hide
*/
@UnsupportedAppUsage
@RequiresPermission(Manifest.permission.BLUETOOTH)
public @Nullable ParcelUuid[] getUuids() {
if (getState() != STATE_ON) {
return null;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.getUuids();
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return null;
}
/**
* Set the friendly Bluetooth name of the local Bluetooth adapter.
* <p>This name is visible to remote Bluetooth devices.
* <p>Valid Bluetooth names are a maximum of 248 bytes using UTF-8
* encoding, although many remote devices can only display the first
* 40 characters, and some may be limited to just 20.
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
* will return false. After turning on Bluetooth,
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
* to get the updated value.
*
* @param name a valid Bluetooth name
* @return true if the name was set, false otherwise
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean setName(String name) {
if (getState() != STATE_ON) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.setName(name);
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Returns the {@link BluetoothClass} Bluetooth Class of Device (CoD) of the local Bluetooth
* adapter.
*
* @return {@link BluetoothClass} Bluetooth CoD of local Bluetooth device.
*
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public BluetoothClass getBluetoothClass() {
if (getState() != STATE_ON) {
return null;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.getBluetoothClass();
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return null;
}
/**
* Sets the {@link BluetoothClass} Bluetooth Class of Device (CoD) of the local Bluetooth
* adapter.
*
* <p>Note: This value persists across system reboot.
*
* @param bluetoothClass {@link BluetoothClass} to set the local Bluetooth adapter to.
* @return true if successful, false if unsuccessful.
*
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
public boolean setBluetoothClass(BluetoothClass bluetoothClass) {
if (getState() != STATE_ON) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.setBluetoothClass(bluetoothClass);
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Returns the Input/Output capability of the device for classic Bluetooth.
*
* @return Input/Output capability of the device. One of {@link #IO_CAPABILITY_OUT},
* {@link #IO_CAPABILITY_IO}, {@link #IO_CAPABILITY_IN}, {@link #IO_CAPABILITY_NONE},
* {@link #IO_CAPABILITY_KBDISP} or {@link #IO_CAPABILITY_UNKNOWN}.
*
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
@IoCapability
public int getIoCapability() {
if (getState() != STATE_ON) return BluetoothAdapter.IO_CAPABILITY_UNKNOWN;
try {
mServiceLock.readLock().lock();
if (mService != null) return mService.getIoCapability();
} catch (RemoteException e) {
Log.e(TAG, e.getMessage(), e);
} finally {
mServiceLock.readLock().unlock();
}
return BluetoothAdapter.IO_CAPABILITY_UNKNOWN;
}
/**
* Sets the Input/Output capability of the device for classic Bluetooth.
*
* <p>Changing the Input/Output capability of a device only takes effect on restarting the
* Bluetooth stack. You would need to restart the stack using {@link BluetoothAdapter#disable()}
* and {@link BluetoothAdapter#enable()} to see the changes.
*
* @param capability Input/Output capability of the device. One of {@link #IO_CAPABILITY_OUT},
* {@link #IO_CAPABILITY_IO}, {@link #IO_CAPABILITY_IN},
* {@link #IO_CAPABILITY_NONE} or {@link #IO_CAPABILITY_KBDISP}.
*
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
public boolean setIoCapability(@IoCapability int capability) {
if (getState() != STATE_ON) return false;
try {
mServiceLock.readLock().lock();
if (mService != null) return mService.setIoCapability(capability);
} catch (RemoteException e) {
Log.e(TAG, e.getMessage(), e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Returns the Input/Output capability of the device for BLE operations.
*
* @return Input/Output capability of the device. One of {@link #IO_CAPABILITY_OUT},
* {@link #IO_CAPABILITY_IO}, {@link #IO_CAPABILITY_IN}, {@link #IO_CAPABILITY_NONE},
* {@link #IO_CAPABILITY_KBDISP} or {@link #IO_CAPABILITY_UNKNOWN}.
*
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
@IoCapability
public int getLeIoCapability() {
if (getState() != STATE_ON) return BluetoothAdapter.IO_CAPABILITY_UNKNOWN;
try {
mServiceLock.readLock().lock();
if (mService != null) return mService.getLeIoCapability();
} catch (RemoteException e) {
Log.e(TAG, e.getMessage(), e);
} finally {
mServiceLock.readLock().unlock();
}
return BluetoothAdapter.IO_CAPABILITY_UNKNOWN;
}
/**
* Sets the Input/Output capability of the device for BLE operations.
*
* <p>Changing the Input/Output capability of a device only takes effect on restarting the
* Bluetooth stack. You would need to restart the stack using {@link BluetoothAdapter#disable()}
* and {@link BluetoothAdapter#enable()} to see the changes.
*
* @param capability Input/Output capability of the device. One of {@link #IO_CAPABILITY_OUT},
* {@link #IO_CAPABILITY_IO}, {@link #IO_CAPABILITY_IN},
* {@link #IO_CAPABILITY_NONE} or {@link #IO_CAPABILITY_KBDISP}.
*
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
public boolean setLeIoCapability(@IoCapability int capability) {
if (getState() != STATE_ON) return false;
try {
mServiceLock.readLock().lock();
if (mService != null) return mService.setLeIoCapability(capability);
} catch (RemoteException e) {
Log.e(TAG, e.getMessage(), e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Get the current Bluetooth scan mode of the local Bluetooth adapter.
* <p>The Bluetooth scan mode determines if the local adapter is
* connectable and/or discoverable from remote Bluetooth devices.
* <p>Possible values are:
* {@link #SCAN_MODE_NONE},
* {@link #SCAN_MODE_CONNECTABLE},
* {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}.
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
* will return {@link #SCAN_MODE_NONE}. After turning on Bluetooth,
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
* to get the updated value.
*
* @return scan mode
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
@ScanMode
public int getScanMode() {
if (getState() != STATE_ON) {
return SCAN_MODE_NONE;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.getScanMode();
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return SCAN_MODE_NONE;
}
/**
* Set the Bluetooth scan mode of the local Bluetooth adapter.
* <p>The Bluetooth scan mode determines if the local adapter is
* connectable and/or discoverable from remote Bluetooth devices.
* <p>For privacy reasons, discoverable mode is automatically turned off
* after <code>duration</code> seconds. For example, 120 seconds should be
* enough for a remote device to initiate and complete its discovery
* process.
* <p>Valid scan mode values are:
* {@link #SCAN_MODE_NONE},
* {@link #SCAN_MODE_CONNECTABLE},
* {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}.
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
* will return false. After turning on Bluetooth,
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
* to get the updated value.
* <p>Applications cannot set the scan mode. They should use
* <code>startActivityForResult(
* BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE})
* </code>instead.
*
* @param mode valid scan mode
* @param duration time in seconds to apply scan mode, only used for {@link
* #SCAN_MODE_CONNECTABLE_DISCOVERABLE}
* @return true if the scan mode was set, false otherwise
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.BLUETOOTH)
public boolean setScanMode(@ScanMode int mode, int duration) {
if (getState() != STATE_ON) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.setScanMode(mode, duration);
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Set the Bluetooth scan mode of the local Bluetooth adapter.
* <p>The Bluetooth scan mode determines if the local adapter is
* connectable and/or discoverable from remote Bluetooth devices.
* <p>For privacy reasons, discoverable mode is automatically turned off
* after <code>duration</code> seconds. For example, 120 seconds should be
* enough for a remote device to initiate and complete its discovery
* process.
* <p>Valid scan mode values are:
* {@link #SCAN_MODE_NONE},
* {@link #SCAN_MODE_CONNECTABLE},
* {@link #SCAN_MODE_CONNECTABLE_DISCOVERABLE}.
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
* will return false. After turning on Bluetooth,
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
* to get the updated value.
* <p>Applications cannot set the scan mode. They should use
* <code>startActivityForResult(
* BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE})
* </code>instead.
*
* @param mode valid scan mode
* @return true if the scan mode was set, false otherwise
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.BLUETOOTH)
public boolean setScanMode(@ScanMode int mode) {
if (getState() != STATE_ON) {
return false;
}
/* getDiscoverableTimeout() to use the latest from NV than use 0 */
return setScanMode(mode, getDiscoverableTimeout());
}
/** @hide */
@UnsupportedAppUsage
public int getDiscoverableTimeout() {
if (getState() != STATE_ON) {
return -1;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.getDiscoverableTimeout();
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return -1;
}
/** @hide */
@UnsupportedAppUsage
public void setDiscoverableTimeout(int timeout) {
if (getState() != STATE_ON) {
return;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
mService.setDiscoverableTimeout(timeout);
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
}
/**
* Get the end time of the latest remote device discovery process.
*
* @return the latest time that the bluetooth adapter was/will be in discovery mode, in
* milliseconds since the epoch. This time can be in the future if {@link #startDiscovery()} has
* been called recently.
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.BLUETOOTH)
public long getDiscoveryEndMillis() {
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.getDiscoveryEndMillis();
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return -1;
}
/**
* Set the context for this BluetoothAdapter (only called from BluetoothManager)
* @hide
*/
public void setContext(Context context) {
mContext = context;
}
private String getOpPackageName() {
// Workaround for legacy API for getting a BluetoothAdapter not
// passing a context
if (mContext != null) {
return mContext.getOpPackageName();
}
return ActivityThread.currentOpPackageName();
}
private String getFeatureId() {
// Workaround for legacy API for getting a BluetoothAdapter not
// passing a context
if (mContext != null) {
return null;
}
return null;
}
/**
* Start the remote device discovery process.
* <p>The discovery process usually involves an inquiry scan of about 12
* seconds, followed by a page scan of each new device to retrieve its
* Bluetooth name.
* <p>This is an asynchronous call, it will return immediately. Register
* for {@link #ACTION_DISCOVERY_STARTED} and {@link
* #ACTION_DISCOVERY_FINISHED} intents to determine exactly when the
* discovery starts and completes. Register for {@link
* BluetoothDevice#ACTION_FOUND} to be notified as remote Bluetooth devices
* are found.
* <p>Device discovery is a heavyweight procedure. New connections to
* remote Bluetooth devices should not be attempted while discovery is in
* progress, and existing connections will experience limited bandwidth
* and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing
* discovery. Discovery is not managed by the Activity,
* but is run as a system service, so an application should always call
* {@link BluetoothAdapter#cancelDiscovery()} even if it
* did not directly request a discovery, just to be sure.
* <p>Device discovery will only find remote devices that are currently
* <i>discoverable</i> (inquiry scan enabled). Many Bluetooth devices are
* not discoverable by default, and need to be entered into a special mode.
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
* will return false. After turning on Bluetooth,
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
* to get the updated value.
*
* @return true on success, false on error
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean startDiscovery() {
if (getState() != STATE_ON) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.startDiscovery(getOpPackageName(), getFeatureId());
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Cancel the current device discovery process.
* <p>Because discovery is a heavyweight procedure for the Bluetooth
* adapter, this method should always be called before attempting to connect
* to a remote device with {@link
* android.bluetooth.BluetoothSocket#connect()}. Discovery is not managed by
* the Activity, but is run as a system service, so an application should
* always call cancel discovery even if it did not directly request a
* discovery, just to be sure.
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
* will return false. After turning on Bluetooth,
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
* to get the updated value.
*
* @return true on success, false on error
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean cancelDiscovery() {
if (getState() != STATE_ON) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.cancelDiscovery();
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Return true if the local Bluetooth adapter is currently in the device
* discovery process.
* <p>Device discovery is a heavyweight procedure. New connections to
* remote Bluetooth devices should not be attempted while discovery is in
* progress, and existing connections will experience limited bandwidth
* and high latency. Use {@link #cancelDiscovery()} to cancel an ongoing
* discovery.
* <p>Applications can also register for {@link #ACTION_DISCOVERY_STARTED}
* or {@link #ACTION_DISCOVERY_FINISHED} to be notified when discovery
* starts or completes.
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
* will return false. After turning on Bluetooth,
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
* to get the updated value.
*
* @return true if discovering
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
public boolean isDiscovering() {
if (getState() != STATE_ON) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.isDiscovering();
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Removes the active device for the grouping of @ActiveDeviceUse specified
*
* @param profiles represents the purpose for which we are setting this as the active device.
* Possible values are:
* {@link BluetoothAdapter#ACTIVE_DEVICE_AUDIO},
* {@link BluetoothAdapter#ACTIVE_DEVICE_PHONE_CALL},
* {@link BluetoothAdapter#ACTIVE_DEVICE_ALL}
* @return false on immediate error, true otherwise
* @throws IllegalArgumentException if device is null or profiles is not one of
* {@link ActiveDeviceUse}
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
public boolean removeActiveDevice(@ActiveDeviceUse int profiles) {
if (profiles != ACTIVE_DEVICE_AUDIO && profiles != ACTIVE_DEVICE_PHONE_CALL
&& profiles != ACTIVE_DEVICE_ALL) {
Log.e(TAG, "Invalid profiles param value in removeActiveDevice");
throw new IllegalArgumentException("Profiles must be one of "
+ "BluetoothAdapter.ACTIVE_DEVICE_AUDIO, "
+ "BluetoothAdapter.ACTIVE_DEVICE_PHONE_CALL, or "
+ "BluetoothAdapter.ACTIVE_DEVICE_ALL");
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.removeActiveDevice(profiles);
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Sets device as the active devices for the profiles passed into the function
*
* @param device is the remote bluetooth device
* @param profiles represents the purpose for which we are setting this as the active device.
* Possible values are:
* {@link BluetoothAdapter#ACTIVE_DEVICE_AUDIO},
* {@link BluetoothAdapter#ACTIVE_DEVICE_PHONE_CALL},
* {@link BluetoothAdapter#ACTIVE_DEVICE_ALL}
* @return false on immediate error, true otherwise
* @throws IllegalArgumentException if device is null or profiles is not one of
* {@link ActiveDeviceUse}
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
public boolean setActiveDevice(@NonNull BluetoothDevice device,
@ActiveDeviceUse int profiles) {
if (device == null) {
Log.e(TAG, "setActiveDevice: Null device passed as parameter");
throw new IllegalArgumentException("device cannot be null");
}
if (profiles != ACTIVE_DEVICE_AUDIO && profiles != ACTIVE_DEVICE_PHONE_CALL
&& profiles != ACTIVE_DEVICE_ALL) {
Log.e(TAG, "Invalid profiles param value in setActiveDevice");
throw new IllegalArgumentException("Profiles must be one of "
+ "BluetoothAdapter.ACTIVE_DEVICE_AUDIO, "
+ "BluetoothAdapter.ACTIVE_DEVICE_PHONE_CALL, or "
+ "BluetoothAdapter.ACTIVE_DEVICE_ALL");
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.setActiveDevice(device, profiles);
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Connects all enabled and supported bluetooth profiles between the local and remote device
*
* @param device is the remote device with which to connect these profiles
* @return true if all profiles successfully connected, false if an error occurred
*
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean connectAllEnabledProfiles(@NonNull BluetoothDevice device) {
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.connectAllEnabledProfiles(device);
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Disconnects all enabled and supported bluetooth profiles between the local and remote device
*
* @param device is the remote device with which to disconnect these profiles
* @return true if all profiles successfully disconnected, false if an error occurred
*
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean disconnectAllEnabledProfiles(@NonNull BluetoothDevice device) {
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.disconnectAllEnabledProfiles(device);
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Return true if the multi advertisement is supported by the chipset
*
* @return true if Multiple Advertisement feature is supported
*/
public boolean isMultipleAdvertisementSupported() {
if (getState() != STATE_ON) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.isMultiAdvertisementSupported();
}
} catch (RemoteException e) {
Log.e(TAG, "failed to get isMultipleAdvertisementSupported, error: ", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Returns {@code true} if BLE scan is always available, {@code false} otherwise. <p>
*
* If this returns {@code true}, application can issue {@link BluetoothLeScanner#startScan} and
* fetch scan results even when Bluetooth is turned off.<p>
*
* To change this setting, use {@link #ACTION_REQUEST_BLE_SCAN_ALWAYS_AVAILABLE}.
*
* @hide
*/
@SystemApi
public boolean isBleScanAlwaysAvailable() {
try {
return mManagerService.isBleScanAlwaysAvailable();
} catch (RemoteException e) {
Log.e(TAG, "remote expection when calling isBleScanAlwaysAvailable", e);
return false;
}
}
/**
* Return true if offloaded filters are supported
*
* @return true if chipset supports on-chip filtering
*/
public boolean isOffloadedFilteringSupported() {
if (!getLeAccess()) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.isOffloadedFilteringSupported();
}
} catch (RemoteException e) {
Log.e(TAG, "failed to get isOffloadedFilteringSupported, error: ", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Return true if offloaded scan batching is supported
*
* @return true if chipset supports on-chip scan batching
*/
public boolean isOffloadedScanBatchingSupported() {
if (!getLeAccess()) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.isOffloadedScanBatchingSupported();
}
} catch (RemoteException e) {
Log.e(TAG, "failed to get isOffloadedScanBatchingSupported, error: ", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Return true if LE 2M PHY feature is supported.
*
* @return true if chipset supports LE 2M PHY feature
*/
public boolean isLe2MPhySupported() {
if (!getLeAccess()) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.isLe2MPhySupported();
}
} catch (RemoteException e) {
Log.e(TAG, "failed to get isExtendedAdvertisingSupported, error: ", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Return true if LE Coded PHY feature is supported.
*
* @return true if chipset supports LE Coded PHY feature
*/
public boolean isLeCodedPhySupported() {
if (!getLeAccess()) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.isLeCodedPhySupported();
}
} catch (RemoteException e) {
Log.e(TAG, "failed to get isLeCodedPhySupported, error: ", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Return true if LE Extended Advertising feature is supported.
*
* @return true if chipset supports LE Extended Advertising feature
*/
public boolean isLeExtendedAdvertisingSupported() {
if (!getLeAccess()) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.isLeExtendedAdvertisingSupported();
}
} catch (RemoteException e) {
Log.e(TAG, "failed to get isLeExtendedAdvertisingSupported, error: ", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Return true if LE Periodic Advertising feature is supported.
*
* @return true if chipset supports LE Periodic Advertising feature
*/
public boolean isLePeriodicAdvertisingSupported() {
if (!getLeAccess()) {
return false;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.isLePeriodicAdvertisingSupported();
}
} catch (RemoteException e) {
Log.e(TAG, "failed to get isLePeriodicAdvertisingSupported, error: ", e);
} finally {
mServiceLock.readLock().unlock();
}
return false;
}
/**
* Return the maximum LE advertising data length in bytes,
* if LE Extended Advertising feature is supported, 0 otherwise.
*
* @return the maximum LE advertising data length.
*/
public int getLeMaximumAdvertisingDataLength() {
if (!getLeAccess()) {
return 0;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.getLeMaximumAdvertisingDataLength();
}
} catch (RemoteException e) {
Log.e(TAG, "failed to get getLeMaximumAdvertisingDataLength, error: ", e);
} finally {
mServiceLock.readLock().unlock();
}
return 0;
}
/**
* Return true if Hearing Aid Profile is supported.
*
* @return true if phone supports Hearing Aid Profile
*/
private boolean isHearingAidProfileSupported() {
try {
return mManagerService.isHearingAidProfileSupported();
} catch (RemoteException e) {
Log.e(TAG, "remote expection when calling isHearingAidProfileSupported", e);
return false;
}
}
/**
* Get the maximum number of connected audio devices.
*
* @return the maximum number of connected audio devices
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
public int getMaxConnectedAudioDevices() {
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.getMaxConnectedAudioDevices();
}
} catch (RemoteException e) {
Log.e(TAG, "failed to get getMaxConnectedAudioDevices, error: ", e);
} finally {
mServiceLock.readLock().unlock();
}
return 1;
}
/**
* Return true if hardware has entries available for matching beacons
*
* @return true if there are hw entries available for matching beacons
* @hide
*/
public boolean isHardwareTrackingFiltersAvailable() {
if (!getLeAccess()) {
return false;
}
try {
IBluetoothGatt iGatt = mManagerService.getBluetoothGatt();
if (iGatt == null) {
// BLE is not supported
return false;
}
return (iGatt.numHwTrackFiltersAvailable() != 0);
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
return false;
}
/**
* Return the record of {@link BluetoothActivityEnergyInfo} object that
* has the activity and energy info. This can be used to ascertain what
* the controller has been up to, since the last sample.
*
* @param updateType Type of info, cached vs refreshed.
* @return a record with {@link BluetoothActivityEnergyInfo} or null if report is unavailable or
* unsupported
* @hide
* @deprecated use the asynchronous {@link #requestControllerActivityEnergyInfo(ResultReceiver)}
* instead.
*/
@Deprecated
public BluetoothActivityEnergyInfo getControllerActivityEnergyInfo(int updateType) {
SynchronousResultReceiver receiver = new SynchronousResultReceiver();
requestControllerActivityEnergyInfo(receiver);
try {
SynchronousResultReceiver.Result result = receiver.awaitResult(1000);
if (result.bundle != null) {
return result.bundle.getParcelable(BatteryStats.RESULT_RECEIVER_CONTROLLER_KEY);
}
} catch (TimeoutException e) {
Log.e(TAG, "getControllerActivityEnergyInfo timed out");
}
return null;
}
/**
* Request the record of {@link BluetoothActivityEnergyInfo} object that
* has the activity and energy info. This can be used to ascertain what
* the controller has been up to, since the last sample.
*
* A null value for the activity info object may be sent if the bluetooth service is
* unreachable or the device does not support reporting such information.
*
* @param result The callback to which to send the activity info.
* @hide
*/
public void requestControllerActivityEnergyInfo(ResultReceiver result) {
try {
mServiceLock.readLock().lock();
if (mService != null) {
mService.requestActivityInfo(result);
result = null;
}
} catch (RemoteException e) {
Log.e(TAG, "getControllerActivityEnergyInfoCallback: " + e);
} finally {
mServiceLock.readLock().unlock();
if (result != null) {
// Only send an immediate result if we failed.
result.send(0, null);
}
}
}
/**
* Fetches a list of the most recently connected bluetooth devices ordered by how recently they
* were connected with most recently first and least recently last
*
* @return {@link List} of bonded {@link BluetoothDevice} ordered by how recently they were
* connected
*
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public @NonNull List<BluetoothDevice> getMostRecentlyConnectedDevices() {
if (getState() != STATE_ON) {
return new ArrayList<>();
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.getMostRecentlyConnectedDevices();
}
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return new ArrayList<>();
}
/**
* Return the set of {@link BluetoothDevice} objects that are bonded
* (paired) to the local adapter.
* <p>If Bluetooth state is not {@link #STATE_ON}, this API
* will return an empty set. After turning on Bluetooth,
* wait for {@link #ACTION_STATE_CHANGED} with {@link #STATE_ON}
* to get the updated value.
*
* @return unmodifiable set of {@link BluetoothDevice}, or null on error
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
public Set<BluetoothDevice> getBondedDevices() {
if (getState() != STATE_ON) {
return toDeviceSet(new BluetoothDevice[0]);
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return toDeviceSet(mService.getBondedDevices());
}
return toDeviceSet(new BluetoothDevice[0]);
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
mServiceLock.readLock().unlock();
}
return null;
}
/**
* Gets the currently supported profiles by the adapter.
*
* <p> This can be used to check whether a profile is supported before attempting
* to connect to its respective proxy.
*
* @return a list of integers indicating the ids of supported profiles as defined in {@link
* BluetoothProfile}.
* @hide
*/
public @NonNull List<Integer> getSupportedProfiles() {
final ArrayList<Integer> supportedProfiles = new ArrayList<Integer>();
try {
synchronized (mManagerCallback) {
if (mService != null) {
final long supportedProfilesBitMask = mService.getSupportedProfiles();
for (int i = 0; i <= BluetoothProfile.MAX_PROFILE_ID; i++) {
if ((supportedProfilesBitMask & (1 << i)) != 0) {
supportedProfiles.add(i);
}
}
} else {
// Bluetooth is disabled. Just fill in known supported Profiles
if (isHearingAidProfileSupported()) {
supportedProfiles.add(BluetoothProfile.HEARING_AID);
}
}
}
} catch (RemoteException e) {
Log.e(TAG, "getSupportedProfiles:", e);
}
return supportedProfiles;
}
/**
* Get the current connection state of the local Bluetooth adapter.
* This can be used to check whether the local Bluetooth adapter is connected
* to any profile of any other remote Bluetooth Device.
*
* <p> Use this function along with {@link #ACTION_CONNECTION_STATE_CHANGED}
* intent to get the connection state of the adapter.
*
* @return One of {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTED}, {@link
* #STATE_CONNECTING} or {@link #STATE_DISCONNECTED}
* @hide
*/
@UnsupportedAppUsage
public int getConnectionState() {
if (getState() != STATE_ON) {
return BluetoothAdapter.STATE_DISCONNECTED;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.getAdapterConnectionState();
}
} catch (RemoteException e) {
Log.e(TAG, "getConnectionState:", e);
} finally {
mServiceLock.readLock().unlock();
}
return BluetoothAdapter.STATE_DISCONNECTED;
}
/**
* Get the current connection state of a profile.
* This function can be used to check whether the local Bluetooth adapter
* is connected to any remote device for a specific profile.
* Profile can be one of {@link BluetoothProfile#HEADSET}, {@link BluetoothProfile#A2DP}.
*
* <p> Return value can be one of
* {@link BluetoothProfile#STATE_DISCONNECTED},
* {@link BluetoothProfile#STATE_CONNECTING},
* {@link BluetoothProfile#STATE_CONNECTED},
* {@link BluetoothProfile#STATE_DISCONNECTING}
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
public int getProfileConnectionState(int profile) {
if (getState() != STATE_ON) {
return BluetoothProfile.STATE_DISCONNECTED;
}
try {
mServiceLock.readLock().lock();
if (mService != null) {
return mService.getProfileConnectionState(profile);
}
} catch (RemoteException e) {
Log.e(TAG, "getProfileConnectionState:", e);
} finally {
mServiceLock.readLock().unlock();
}
return BluetoothProfile.STATE_DISCONNECTED;
}
/**
* Create a listening, secure RFCOMM Bluetooth socket.
* <p>A remote device connecting to this socket will be authenticated and
* communication on this socket will be encrypted.
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
* connections from a listening {@link BluetoothServerSocket}.
* <p>Valid RFCOMM channels are in range 1 to 30.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
*
* @param channel RFCOMM channel to listen on
* @return a listening RFCOMM BluetoothServerSocket
* @throws IOException on error, for example Bluetooth not available, or insufficient
* permissions, or channel in use.
* @hide
*/
public BluetoothServerSocket listenUsingRfcommOn(int channel) throws IOException {
return listenUsingRfcommOn(channel, false, false);
}
/**
* Create a listening, secure RFCOMM Bluetooth socket.
* <p>A remote device connecting to this socket will be authenticated and
* communication on this socket will be encrypted.
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
* connections from a listening {@link BluetoothServerSocket}.
* <p>Valid RFCOMM channels are in range 1 to 30.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
* <p>To auto assign a channel without creating a SDP record use
* {@link #SOCKET_CHANNEL_AUTO_STATIC_NO_SDP} as channel number.
*
* @param channel RFCOMM channel to listen on
* @param mitm enforce man-in-the-middle protection for authentication.
* @param min16DigitPin enforce a pin key length og minimum 16 digit for sec mode 2
* connections.
* @return a listening RFCOMM BluetoothServerSocket
* @throws IOException on error, for example Bluetooth not available, or insufficient
* permissions, or channel in use.
* @hide
*/
@UnsupportedAppUsage
public BluetoothServerSocket listenUsingRfcommOn(int channel, boolean mitm,
boolean min16DigitPin) throws IOException {
BluetoothServerSocket socket =
new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, true, true, channel, mitm,
min16DigitPin);
int errno = socket.mSocket.bindListen();
if (channel == SOCKET_CHANNEL_AUTO_STATIC_NO_SDP) {
socket.setChannel(socket.mSocket.getPort());
}
if (errno != 0) {
//TODO(BT): Throw the same exception error code
// that the previous code was using.
//socket.mSocket.throwErrnoNative(errno);
throw new IOException("Error: " + errno);
}
return socket;
}
/**
* Create a listening, secure RFCOMM Bluetooth socket with Service Record.
* <p>A remote device connecting to this socket will be authenticated and
* communication on this socket will be encrypted.
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
* connections from a listening {@link BluetoothServerSocket}.
* <p>The system will assign an unused RFCOMM channel to listen on.
* <p>The system will also register a Service Discovery
* Protocol (SDP) record with the local SDP server containing the specified
* UUID, service name, and auto-assigned channel. Remote Bluetooth devices
* can use the same UUID to query our SDP server and discover which channel
* to connect to. This SDP record will be removed when this socket is
* closed, or if this application closes unexpectedly.
* <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to
* connect to this socket from another device using the same {@link UUID}.
*
* @param name service name for SDP record
* @param uuid uuid for SDP record
* @return a listening RFCOMM BluetoothServerSocket
* @throws IOException on error, for example Bluetooth not available, or insufficient
* permissions, or channel in use.
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
public BluetoothServerSocket listenUsingRfcommWithServiceRecord(String name, UUID uuid)
throws IOException {
return createNewRfcommSocketAndRecord(name, uuid, true, true);
}
/**
* Create a listening, insecure RFCOMM Bluetooth socket with Service Record.
* <p>The link key is not required to be authenticated, i.e the communication may be
* vulnerable to Man In the Middle attacks. For Bluetooth 2.1 devices,
* the link will be encrypted, as encryption is mandartory.
* For legacy devices (pre Bluetooth 2.1 devices) the link will not
* be encrypted. Use {@link #listenUsingRfcommWithServiceRecord}, if an
* encrypted and authenticated communication channel is desired.
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
* connections from a listening {@link BluetoothServerSocket}.
* <p>The system will assign an unused RFCOMM channel to listen on.
* <p>The system will also register a Service Discovery
* Protocol (SDP) record with the local SDP server containing the specified
* UUID, service name, and auto-assigned channel. Remote Bluetooth devices
* can use the same UUID to query our SDP server and discover which channel
* to connect to. This SDP record will be removed when this socket is
* closed, or if this application closes unexpectedly.
* <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to
* connect to this socket from another device using the same {@link UUID}.
*
* @param name service name for SDP record
* @param uuid uuid for SDP record
* @return a listening RFCOMM BluetoothServerSocket
* @throws IOException on error, for example Bluetooth not available, or insufficient
* permissions, or channel in use.
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
public BluetoothServerSocket listenUsingInsecureRfcommWithServiceRecord(String name, UUID uuid)
throws IOException {
return createNewRfcommSocketAndRecord(name, uuid, false, false);
}
/**
* Create a listening, encrypted,
* RFCOMM Bluetooth socket with Service Record.
* <p>The link will be encrypted, but the link key is not required to be authenticated
* i.e the communication is vulnerable to Man In the Middle attacks. Use
* {@link #listenUsingRfcommWithServiceRecord}, to ensure an authenticated link key.
* <p> Use this socket if authentication of link key is not possible.
* 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 and this socket can be used.
* Use {@link #listenUsingInsecureRfcommWithServiceRecord}, if encryption is not required.
* For Bluetooth 2.1 devices, the link will be encrypted, as encryption is mandartory.
* For more details, refer to the Security Model section 5.2 (vol 3) of
* Bluetooth Core Specification version 2.1 + EDR.
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming
* connections from a listening {@link BluetoothServerSocket}.
* <p>The system will assign an unused RFCOMM channel to listen on.
* <p>The system will also register a Service Discovery
* Protocol (SDP) record with the local SDP server containing the specified
* UUID, service name, and auto-assigned channel. Remote Bluetooth devices
* can use the same UUID to query our SDP server and discover which channel
* to connect to. This SDP record will be removed when this socket is
* closed, or if this application closes unexpectedly.
* <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to
* connect to this socket from another device using the same {@link UUID}.
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
*
* @param name service name for SDP record
* @param uuid uuid for SDP record
* @return a listening RFCOMM BluetoothServerSocket
* @throws IOException on error, for example Bluetooth not available, or insufficient
* permissions, or channel in use.
* @hide
*/
@UnsupportedAppUsage
public BluetoothServerSocket listenUsingEncryptedRfcommWithServiceRecord(String name, UUID uuid)
throws IOException {
return createNewRfcommSocketAndRecord(name, uuid, false, true);
}
private BluetoothServerSocket createNewRfcommSocketAndRecord(String name, UUID uuid,
boolean auth, boolean encrypt) throws IOException {
BluetoothServerSocket socket;
socket = new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, auth, encrypt,
new ParcelUuid(uuid));
socket.setServiceName(name);
int errno = socket.mSocket.bindListen();
if (errno != 0) {
//TODO(BT): Throw the same exception error code
// that the previous code was using.
//socket.mSocket.throwErrnoNative(errno);
throw new IOException("Error: " + errno);
}
return socket;
}
/**
* Construct an unencrypted, unauthenticated, RFCOMM server socket.
* Call #accept to retrieve connections to this socket.
*
* @return An RFCOMM BluetoothServerSocket
* @throws IOException On error, for example Bluetooth not available, or insufficient
* permissions.
* @hide
*/
public BluetoothServerSocket listenUsingInsecureRfcommOn(int port) throws IOException {
BluetoothServerSocket socket =
new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, false, false, port);
int errno = socket.mSocket.bindListen();
if (port == SOCKET_CHANNEL_AUTO_STATIC_NO_SDP) {
socket.setChannel(socket.mSocket.getPort());
}
if (errno != 0) {
//TODO(BT): Throw the same exception error code
// that the previous code was using.
//socket.mSocket.throwErrnoNative(errno);
throw new IOException("Error: " + errno);
}
return socket;
}
/**
* Construct an encrypted, RFCOMM server socket.
* Call #accept to retrieve connections to this socket.
*
* @return An RFCOMM BluetoothServerSocket
* @throws IOException On error, for example Bluetooth not available, or insufficient
* permissions.
* @hide
*/
public BluetoothServerSocket listenUsingEncryptedRfcommOn(int port) throws IOException {
BluetoothServerSocket socket =
new BluetoothServerSocket(BluetoothSocket.TYPE_RFCOMM, false, true, port);
int errno = socket.mSocket.bindListen();
if (port == SOCKET_CHANNEL_AUTO_STATIC_NO_SDP) {
socket.setChannel(socket.mSocket.getPort());
}
if (errno < 0) {
//TODO(BT): Throw the same exception error code
// that the previous code was using.
//socket.mSocket.throwErrnoNative(errno);
throw new IOException("Error: " + errno);
}
return socket;
}
/**
* Construct a SCO server socket.
* Call #accept to retrieve connections to this socket.
*
* @return A SCO BluetoothServerSocket
* @throws IOException On error, for example Bluetooth not available, or insufficient
* permissions.
* @hide
*/
public static BluetoothServerSocket listenUsingScoOn() throws IOException {
BluetoothServerSocket socket =
new BluetoothServerSocket(BluetoothSocket.TYPE_SCO, false, false, -1);
int errno = socket.mSocket.bindListen();
if (errno < 0) {
//TODO(BT): Throw the same exception error code
// that the previous code was using.
//socket.mSocket.throwErrnoNative(errno);
}
return socket;
}
/**
* Construct an encrypted, authenticated, L2CAP server socket.
* Call #accept to retrieve connections to this socket.
* <p>To auto assign a port without creating a SDP record use
* {@link #SOCKET_CHANNEL_AUTO_STATIC_NO_SDP} as port number.
*
* @param port the PSM to listen on
* @param mitm enforce man-in-the-middle protection for authentication.
* @param min16DigitPin enforce a pin key length og minimum 16 digit for sec mode 2
* connections.
* @return An L2CAP BluetoothServerSocket
* @throws IOException On error, for example Bluetooth not available, or insufficient
* permissions.
* @hide
*/
public BluetoothServerSocket listenUsingL2capOn(int port, boolean mitm, boolean min16DigitPin)
throws IOException {
BluetoothServerSocket socket =
new BluetoothServerSocket(BluetoothSocket.TYPE_L2CAP, true, true, port, mitm,
min16DigitPin);
int errno = socket.mSocket.bindListen();
if (port == SOCKET_CHANNEL_AUTO_STATIC_NO_SDP) {
int assignedChannel = socket.mSocket.getPort();
if (DBG) Log.d(TAG, "listenUsingL2capOn: set assigned channel to " + assignedChannel);
socket.setChannel(assignedChannel);
}
if (errno != 0) {
//TODO(BT): Throw the same exception error code
// that the previous code was using.
//socket.mSocket.throwErrnoNative(errno);
throw new IOException("Error: " + errno);
}
return socket;
}
/**
* Construct an encrypted, authenticated, L2CAP server socket.
* Call #accept to retrieve connections to this socket.
* <p>To auto assign a port without creating a SDP record use
* {@link #SOCKET_CHANNEL_AUTO_STATIC_NO_SDP} as port number.
*
* @param port the PSM to listen on
* @return An L2CAP BluetoothServerSocket
* @throws IOException On error, for example Bluetooth not available, or insufficient
* permissions.
* @hide
*/
public BluetoothServerSocket listenUsingL2capOn(int port) throws IOException {
return listenUsingL2capOn(port, false, false);
}
/**
* Construct an insecure L2CAP server socket.
* Call #accept to retrieve connections to this socket.
* <p>To auto assign a port without creating a SDP record use
* {@link #SOCKET_CHANNEL_AUTO_STATIC_NO_SDP} as port number.
*
* @param port the PSM to listen on
* @return An L2CAP BluetoothServerSocket
* @throws IOException On error, for example Bluetooth not available, or insufficient
* permissions.
* @hide
*/
public BluetoothServerSocket listenUsingInsecureL2capOn(int port) throws IOException {
Log.d(TAG, "listenUsingInsecureL2capOn: port=" + port);
BluetoothServerSocket socket =
new BluetoothServerSocket(BluetoothSocket.TYPE_L2CAP, false, false, port, false,
false);
int errno = socket.mSocket.bindListen();
if (port == SOCKET_CHANNEL_AUTO_STATIC_NO_SDP) {
int assignedChannel = socket.mSocket.getPort();
if (DBG) {
Log.d(TAG, "listenUsingInsecureL2capOn: set assigned channel to "
+ assignedChannel);
}
socket.setChannel(assignedChannel);
}
if (errno != 0) {
//TODO(BT): Throw the same exception error code
// that the previous code was using.
//socket.mSocket.throwErrnoNative(errno);
throw new IOException("Error: " + errno);
}
return socket;
}
/**
* Read the local Out of Band Pairing Data
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
*
* @return Pair<byte[], byte[]> of Hash and Randomizer
* @hide
*/
public Pair<byte[], byte[]> readOutOfBandData() {
return null;
}
/**
* Get the profile proxy object associated with the profile.
*
* <p>Profile can be one of {@link BluetoothProfile#HEADSET}, {@link BluetoothProfile#A2DP},
* {@link BluetoothProfile#GATT}, {@link BluetoothProfile#HEARING_AID}, or {@link
* BluetoothProfile#GATT_SERVER}. Clients must implement {@link
* BluetoothProfile.ServiceListener} to get notified of the connection status and to get the
* proxy object.
*
* @param context Context of the application
* @param listener The service Listener for connection callbacks.
* @param profile The Bluetooth profile; either {@link BluetoothProfile#HEADSET},
* {@link BluetoothProfile#A2DP}, {@link BluetoothProfile#GATT}, {@link
* BluetoothProfile#HEARING_AID} or {@link BluetoothProfile#GATT_SERVER}.
* @return true on success, false on error
*/
public boolean getProfileProxy(Context context, BluetoothProfile.ServiceListener listener,
int profile) {
if (context == null || listener == null) {
return false;
}
if (profile == BluetoothProfile.HEADSET) {
BluetoothHeadset headset = new BluetoothHeadset(context, listener);
return true;
} else if (profile == BluetoothProfile.A2DP) {
BluetoothA2dp a2dp = new BluetoothA2dp(context, listener);
return true;
} else if (profile == BluetoothProfile.A2DP_SINK) {
BluetoothA2dpSink a2dpSink = new BluetoothA2dpSink(context, listener);
return true;
} else if (profile == BluetoothProfile.AVRCP_CONTROLLER) {
BluetoothAvrcpController avrcp = new BluetoothAvrcpController(context, listener);
return true;
} else if (profile == BluetoothProfile.HID_HOST) {
BluetoothHidHost iDev = new BluetoothHidHost(context, listener);
return true;
} else if (profile == BluetoothProfile.PAN) {
BluetoothPan pan = new BluetoothPan(context, listener);
return true;
} else if (profile == BluetoothProfile.PBAP) {
BluetoothPbap pbap = new BluetoothPbap(context, listener);
return true;
} else if (profile == BluetoothProfile.HEALTH) {
Log.e(TAG, "getProfileProxy(): BluetoothHealth is deprecated");
return false;
} else if (profile == BluetoothProfile.MAP) {
BluetoothMap map = new BluetoothMap(context, listener);
return true;
} else if (profile == BluetoothProfile.HEADSET_CLIENT) {
BluetoothHeadsetClient headsetClient = new BluetoothHeadsetClient(context, listener);
return true;
} else if (profile == BluetoothProfile.SAP) {
BluetoothSap sap = new BluetoothSap(context, listener);
return true;
} else if (profile == BluetoothProfile.PBAP_CLIENT) {
BluetoothPbapClient pbapClient = new BluetoothPbapClient(context, listener);
return true;
} else if (profile == BluetoothProfile.MAP_CLIENT) {
BluetoothMapClient mapClient = new BluetoothMapClient(context, listener);
return true;
} else if (profile == BluetoothProfile.HID_DEVICE) {
BluetoothHidDevice hidDevice = new BluetoothHidDevice(context, listener);
return true;
} else if (profile == BluetoothProfile.HEARING_AID) {
if (isHearingAidProfileSupported()) {
BluetoothHearingAid hearingAid = new BluetoothHearingAid(context, listener);
return true;
}
return false;
} else {
return false;
}
}
/**
* Close the connection of the profile proxy to the Service.
*
* <p> Clients should call this when they are no longer using
* the proxy obtained from {@link #getProfileProxy}.
* Profile can be one of {@link BluetoothProfile#HEADSET} or {@link BluetoothProfile#A2DP}
*
* @param profile
* @param proxy Profile proxy object
*/
public void closeProfileProxy(int profile, BluetoothProfile proxy) {
if (proxy == null) {
return;
}
switch (profile) {
case BluetoothProfile.HEADSET:
BluetoothHeadset headset = (BluetoothHeadset) proxy;
headset.close();
break;
case BluetoothProfile.A2DP:
BluetoothA2dp a2dp = (BluetoothA2dp) proxy;
a2dp.close();
break;
case BluetoothProfile.A2DP_SINK:
BluetoothA2dpSink a2dpSink = (BluetoothA2dpSink) proxy;
a2dpSink.close();
break;
case BluetoothProfile.AVRCP_CONTROLLER:
BluetoothAvrcpController avrcp = (BluetoothAvrcpController) proxy;
avrcp.close();
break;
case BluetoothProfile.HID_HOST:
BluetoothHidHost iDev = (BluetoothHidHost) proxy;
iDev.close();
break;
case BluetoothProfile.PAN:
BluetoothPan pan = (BluetoothPan) proxy;
pan.close();
break;
case BluetoothProfile.PBAP:
BluetoothPbap pbap = (BluetoothPbap) proxy;
pbap.close();
break;
case BluetoothProfile.GATT:
BluetoothGatt gatt = (BluetoothGatt) proxy;
gatt.close();
break;
case BluetoothProfile.GATT_SERVER:
BluetoothGattServer gattServer = (BluetoothGattServer) proxy;
gattServer.close();
break;
case BluetoothProfile.MAP:
BluetoothMap map = (BluetoothMap) proxy;
map.close();
break;
case BluetoothProfile.HEADSET_CLIENT:
BluetoothHeadsetClient headsetClient = (BluetoothHeadsetClient) proxy;
headsetClient.close();
break;
case BluetoothProfile.SAP:
BluetoothSap sap = (BluetoothSap) proxy;
sap.close();
break;
case BluetoothProfile.PBAP_CLIENT:
BluetoothPbapClient pbapClient = (BluetoothPbapClient) proxy;
pbapClient.close();
break;
case BluetoothProfile.MAP_CLIENT:
BluetoothMapClient mapClient = (BluetoothMapClient) proxy;
mapClient.close();
break;
case BluetoothProfile.HID_DEVICE:
BluetoothHidDevice hidDevice = (BluetoothHidDevice) proxy;
hidDevice.close();
break;
case BluetoothProfile.HEARING_AID:
BluetoothHearingAid hearingAid = (BluetoothHearingAid) proxy;
hearingAid.close();
}
}
private final IBluetoothManagerCallback mManagerCallback =
new IBluetoothManagerCallback.Stub() {
public void onBluetoothServiceUp(IBluetooth bluetoothService) {
if (DBG) {
Log.d(TAG, "onBluetoothServiceUp: " + bluetoothService);
}
mServiceLock.writeLock().lock();
mService = bluetoothService;
mServiceLock.writeLock().unlock();
synchronized (mProxyServiceStateCallbacks) {
for (IBluetoothManagerCallback cb : mProxyServiceStateCallbacks) {
try {
if (cb != null) {
cb.onBluetoothServiceUp(bluetoothService);
} else {
Log.d(TAG, "onBluetoothServiceUp: cb is null!");
}
} catch (Exception e) {
Log.e(TAG, "", e);
}
}
}
synchronized (sMetadataListeners) {
sMetadataListeners.forEach((device, pair) -> {
try {
mService.registerMetadataListener(sBluetoothMetadataListener,
device);
} catch (RemoteException e) {
Log.e(TAG, "Failed to register metadata listener", e);
}
});
}
}
public void onBluetoothServiceDown() {
if (DBG) {
Log.d(TAG, "onBluetoothServiceDown: " + mService);
}
try {
mServiceLock.writeLock().lock();
mService = null;
if (mLeScanClients != null) {
mLeScanClients.clear();
}
if (sBluetoothLeAdvertiser != null) {
sBluetoothLeAdvertiser.cleanup();
}
if (sBluetoothLeScanner != null) {
sBluetoothLeScanner.cleanup();
}
} finally {
mServiceLock.writeLock().unlock();
}
synchronized (mProxyServiceStateCallbacks) {
for (IBluetoothManagerCallback cb : mProxyServiceStateCallbacks) {
try {
if (cb != null) {
cb.onBluetoothServiceDown();
} else {
Log.d(TAG, "onBluetoothServiceDown: cb is null!");
}
} catch (Exception e) {
Log.e(TAG, "", e);
}
}
}
}
public void onBrEdrDown() {
if (VDBG) {
Log.i(TAG, "onBrEdrDown: " + mService);
}
}
};
/**
* Enable the Bluetooth Adapter, but don't auto-connect devices
* and don't persist state. Only for use by system applications.
*
* @hide
*/
@SystemApi
@RequiresPermission(android.Manifest.permission.BLUETOOTH_ADMIN)
public boolean enableNoAutoConnect() {
if (isEnabled()) {
if (DBG) {
Log.d(TAG, "enableNoAutoConnect(): BT already enabled!");
}
return true;
}
try {
return mManagerService.enableNoAutoConnect(ActivityThread.currentPackageName());
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
return false;
}
/**
* Enable control of the Bluetooth Adapter for a single application.
*
* <p>Some applications need to use Bluetooth for short periods of time to
* transfer data but don't want all the associated implications like
* automatic connection to headsets etc.
*
* <p> Multiple applications can call this. This is reference counted and
* Bluetooth disabled only when no one else is using it. There will be no UI
* shown to the user while bluetooth is being enabled. Any user action will
* override this call. For example, if user wants Bluetooth on and the last
* user of this API wanted to disable Bluetooth, Bluetooth will not be
* turned off.
*
* <p> This API is only meant to be used by internal applications. Third
* party applications but use {@link #enable} and {@link #disable} APIs.
*
* <p> If this API returns true, it means the callback will be called.
* The callback will be called with the current state of Bluetooth.
* If the state is not what was requested, an internal error would be the
* reason. If Bluetooth is already on and if this function is called to turn
* it on, the api will return true and a callback will be called.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
*
* @param on True for on, false for off.
* @param callback The callback to notify changes to the state.
* @hide
*/
public boolean changeApplicationBluetoothState(boolean on,
BluetoothStateChangeCallback callback) {
return false;
}
/**
* @hide
*/
public interface BluetoothStateChangeCallback {
/**
* @hide
*/
void onBluetoothStateChange(boolean on);
}
/**
* @hide
*/
public class StateChangeCallbackWrapper extends IBluetoothStateChangeCallback.Stub {
private BluetoothStateChangeCallback mCallback;
StateChangeCallbackWrapper(BluetoothStateChangeCallback callback) {
mCallback = callback;
}
@Override
public void onBluetoothStateChange(boolean on) {
mCallback.onBluetoothStateChange(on);
}
}
private Set<BluetoothDevice> toDeviceSet(BluetoothDevice[] devices) {
Set<BluetoothDevice> deviceSet = new HashSet<BluetoothDevice>(Arrays.asList(devices));
return Collections.unmodifiableSet(deviceSet);
}
protected void finalize() throws Throwable {
try {
mManagerService.unregisterAdapter(mManagerCallback);
} catch (RemoteException e) {
Log.e(TAG, "", e);
} finally {
super.finalize();
}
}
/**
* Validate a String Bluetooth address, such as "00:43:A8:23:10:F0"
* <p>Alphabetic characters must be uppercase to be valid.
*
* @param address Bluetooth address as string
* @return true if the address is valid, false otherwise
*/
public static boolean checkBluetoothAddress(String address) {
if (address == null || address.length() != ADDRESS_LENGTH) {
return false;
}
for (int i = 0; i < ADDRESS_LENGTH; i++) {
char c = address.charAt(i);
switch (i % 3) {
case 0:
case 1:
if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'F')) {
// hex character, OK
break;
}
return false;
case 2:
if (c == ':') {
break; // OK
}
return false;
}
}
return true;
}
@UnsupportedAppUsage
/*package*/ IBluetoothManager getBluetoothManager() {
return mManagerService;
}
private final ArrayList<IBluetoothManagerCallback> mProxyServiceStateCallbacks =
new ArrayList<IBluetoothManagerCallback>();
@UnsupportedAppUsage
/*package*/ IBluetooth getBluetoothService(IBluetoothManagerCallback cb) {
synchronized (mProxyServiceStateCallbacks) {
if (cb == null) {
Log.w(TAG, "getBluetoothService() called with no BluetoothManagerCallback");
} else if (!mProxyServiceStateCallbacks.contains(cb)) {
mProxyServiceStateCallbacks.add(cb);
}
}
return mService;
}
/*package*/ void removeServiceStateCallback(IBluetoothManagerCallback cb) {
synchronized (mProxyServiceStateCallbacks) {
mProxyServiceStateCallbacks.remove(cb);
}
}
/**
* Callback interface used to deliver LE scan results.
*
* @see #startLeScan(LeScanCallback)
* @see #startLeScan(UUID[], LeScanCallback)
*/
public interface LeScanCallback {
/**
* Callback reporting an LE device found during a device scan initiated
* by the {@link BluetoothAdapter#startLeScan} function.
*
* @param device Identifies the remote device
* @param rssi The RSSI value for the remote device as reported by the Bluetooth hardware. 0
* if no RSSI value is available.
* @param scanRecord The content of the advertisement record offered by the remote device.
*/
void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord);
}
/**
* Starts a scan for Bluetooth LE devices.
*
* <p>Results of the scan are reported using the
* {@link LeScanCallback#onLeScan} callback.
*
* @param callback the callback LE scan results are delivered
* @return true, if the scan was started successfully
* @deprecated use {@link BluetoothLeScanner#startScan(List, ScanSettings, ScanCallback)}
* instead.
*/
@Deprecated
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean startLeScan(LeScanCallback callback) {
return startLeScan(null, callback);
}
/**
* Starts a scan for Bluetooth LE devices, looking for devices that
* advertise given services.
*
* <p>Devices which advertise all specified services are reported using the
* {@link LeScanCallback#onLeScan} callback.
*
* @param serviceUuids Array of services to look for
* @param callback the callback LE scan results are delivered
* @return true, if the scan was started successfully
* @deprecated use {@link BluetoothLeScanner#startScan(List, ScanSettings, ScanCallback)}
* instead.
*/
@Deprecated
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean startLeScan(final UUID[] serviceUuids, final LeScanCallback callback) {
if (DBG) {
Log.d(TAG, "startLeScan(): " + Arrays.toString(serviceUuids));
}
if (callback == null) {
if (DBG) {
Log.e(TAG, "startLeScan: null callback");
}
return false;
}
BluetoothLeScanner scanner = getBluetoothLeScanner();
if (scanner == null) {
if (DBG) {
Log.e(TAG, "startLeScan: cannot get BluetoothLeScanner");
}
return false;
}
synchronized (mLeScanClients) {
if (mLeScanClients.containsKey(callback)) {
if (DBG) {
Log.e(TAG, "LE Scan has already started");
}
return false;
}
try {
IBluetoothGatt iGatt = mManagerService.getBluetoothGatt();
if (iGatt == null) {
// BLE is not supported
return false;
}
ScanCallback scanCallback = new ScanCallback() {
@Override
public void onScanResult(int callbackType, ScanResult result) {
if (callbackType != ScanSettings.CALLBACK_TYPE_ALL_MATCHES) {
// Should not happen.
Log.e(TAG, "LE Scan has already started");
return;
}
ScanRecord scanRecord = result.getScanRecord();
if (scanRecord == null) {
return;
}
if (serviceUuids != null) {
List<ParcelUuid> uuids = new ArrayList<ParcelUuid>();
for (UUID uuid : serviceUuids) {
uuids.add(new ParcelUuid(uuid));
}
List<ParcelUuid> scanServiceUuids = scanRecord.getServiceUuids();
if (scanServiceUuids == null || !scanServiceUuids.containsAll(uuids)) {
if (DBG) {
Log.d(TAG, "uuids does not match");
}
return;
}
}
callback.onLeScan(result.getDevice(), result.getRssi(),
scanRecord.getBytes());
}
};
ScanSettings settings = new ScanSettings.Builder().setCallbackType(
ScanSettings.CALLBACK_TYPE_ALL_MATCHES)
.setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY)
.build();
List<ScanFilter> filters = new ArrayList<ScanFilter>();
if (serviceUuids != null && serviceUuids.length > 0) {
// Note scan filter does not support matching an UUID array so we put one
// UUID to hardware and match the whole array in callback.
ScanFilter filter =
new ScanFilter.Builder().setServiceUuid(new ParcelUuid(serviceUuids[0]))
.build();
filters.add(filter);
}
scanner.startScan(filters, settings, scanCallback);
mLeScanClients.put(callback, scanCallback);
return true;
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
}
return false;
}
/**
* Stops an ongoing Bluetooth LE device scan.
*
* @param callback used to identify which scan to stop must be the same handle used to start the
* scan
* @deprecated Use {@link BluetoothLeScanner#stopScan(ScanCallback)} instead.
*/
@Deprecated
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public void stopLeScan(LeScanCallback callback) {
if (DBG) {
Log.d(TAG, "stopLeScan()");
}
BluetoothLeScanner scanner = getBluetoothLeScanner();
if (scanner == null) {
return;
}
synchronized (mLeScanClients) {
ScanCallback scanCallback = mLeScanClients.remove(callback);
if (scanCallback == null) {
if (DBG) {
Log.d(TAG, "scan not started yet");
}
return;
}
scanner.stopScan(scanCallback);
}
}
/**
* Create a secure L2CAP Connection-oriented Channel (CoC) {@link BluetoothServerSocket} and
* assign a dynamic protocol/service multiplexer (PSM) value. This socket can be used to listen
* for incoming connections. The supported Bluetooth transport is LE only.
* <p>A remote device connecting to this socket will be authenticated and communication on this
* socket will be encrypted.
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming connections from a listening
* {@link BluetoothServerSocket}.
* <p>The system will assign a dynamic PSM value. This PSM value can be read from the {@link
* BluetoothServerSocket#getPsm()} and this value will be released when this server socket is
* closed, Bluetooth is turned off, or the application exits unexpectedly.
* <p>The mechanism of disclosing the assigned dynamic PSM value to the initiating peer is
* defined and performed by the application.
* <p>Use {@link BluetoothDevice#createL2capChannel(int)} to connect to this server
* socket from another Android device that is given the PSM value.
*
* @return an L2CAP CoC BluetoothServerSocket
* @throws IOException on error, for example Bluetooth not available, or insufficient
* permissions, or unable to start this CoC
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
public @NonNull BluetoothServerSocket listenUsingL2capChannel()
throws IOException {
BluetoothServerSocket socket =
new BluetoothServerSocket(BluetoothSocket.TYPE_L2CAP_LE, true, true,
SOCKET_CHANNEL_AUTO_STATIC_NO_SDP, false, false);
int errno = socket.mSocket.bindListen();
if (errno != 0) {
throw new IOException("Error: " + errno);
}
int assignedPsm = socket.mSocket.getPort();
if (assignedPsm == 0) {
throw new IOException("Error: Unable to assign PSM value");
}
if (DBG) {
Log.d(TAG, "listenUsingL2capChannel: set assigned PSM to "
+ assignedPsm);
}
socket.setChannel(assignedPsm);
return socket;
}
/**
* Create an insecure L2CAP Connection-oriented Channel (CoC) {@link BluetoothServerSocket} and
* assign a dynamic PSM value. This socket can be used to listen for incoming connections. The
* supported Bluetooth transport is LE only.
* <p>The link key is not required to be authenticated, i.e the communication may be vulnerable
* to man-in-the-middle attacks. Use {@link #listenUsingL2capChannel}, if an encrypted and
* authenticated communication channel is desired.
* <p>Use {@link BluetoothServerSocket#accept} to retrieve incoming connections from a listening
* {@link BluetoothServerSocket}.
* <p>The system will assign a dynamic protocol/service multiplexer (PSM) value. This PSM value
* can be read from the {@link BluetoothServerSocket#getPsm()} and this value will be released
* when this server socket is closed, Bluetooth is turned off, or the application exits
* unexpectedly.
* <p>The mechanism of disclosing the assigned dynamic PSM value to the initiating peer is
* defined and performed by the application.
* <p>Use {@link BluetoothDevice#createInsecureL2capChannel(int)} to connect to this server
* socket from another Android device that is given the PSM value.
*
* @return an L2CAP CoC BluetoothServerSocket
* @throws IOException on error, for example Bluetooth not available, or insufficient
* permissions, or unable to start this CoC
*/
@RequiresPermission(Manifest.permission.BLUETOOTH)
public @NonNull BluetoothServerSocket listenUsingInsecureL2capChannel()
throws IOException {
BluetoothServerSocket socket =
new BluetoothServerSocket(BluetoothSocket.TYPE_L2CAP_LE, false, false,
SOCKET_CHANNEL_AUTO_STATIC_NO_SDP, false, false);
int errno = socket.mSocket.bindListen();
if (errno != 0) {
throw new IOException("Error: " + errno);
}
int assignedPsm = socket.mSocket.getPort();
if (assignedPsm == 0) {
throw new IOException("Error: Unable to assign PSM value");
}
if (DBG) {
Log.d(TAG, "listenUsingInsecureL2capChannel: set assigned PSM to "
+ assignedPsm);
}
socket.setChannel(assignedPsm);
return socket;
}
/**
* Register a {@link #OnMetadataChangedListener} to receive update about metadata
* changes for this {@link BluetoothDevice}.
* Registration must be done when Bluetooth is ON and will last until
* {@link #removeOnMetadataChangedListener(BluetoothDevice)} is called, even when Bluetooth
* restarted in the middle.
* All input parameters should not be null or {@link NullPointerException} will be triggered.
* The same {@link BluetoothDevice} and {@link #OnMetadataChangedListener} pair can only be
* registered once, double registration would cause {@link IllegalArgumentException}.
*
* @param device {@link BluetoothDevice} that will be registered
* @param executor the executor for listener callback
* @param listener {@link #OnMetadataChangedListener} that will receive asynchronous callbacks
* @return true on success, false on error
* @throws NullPointerException If one of {@code listener}, {@code device} or {@code executor}
* is null.
* @throws IllegalArgumentException The same {@link #OnMetadataChangedListener} and
* {@link BluetoothDevice} are registered twice.
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
public boolean addOnMetadataChangedListener(@NonNull BluetoothDevice device,
@NonNull Executor executor, @NonNull OnMetadataChangedListener listener) {
if (DBG) Log.d(TAG, "addOnMetadataChangedListener()");
final IBluetooth service = mService;
if (service == null) {
Log.e(TAG, "Bluetooth is not enabled. Cannot register metadata listener");
return false;
}
if (listener == null) {
throw new NullPointerException("listener is null");
}
if (device == null) {
throw new NullPointerException("device is null");
}
if (executor == null) {
throw new NullPointerException("executor is null");
}
synchronized (sMetadataListeners) {
List<Pair<OnMetadataChangedListener, Executor>> listenerList =
sMetadataListeners.get(device);
if (listenerList == null) {
// Create new listener/executor list for registeration
listenerList = new ArrayList<>();
sMetadataListeners.put(device, listenerList);
} else {
// Check whether this device was already registed by the lisenter
if (listenerList.stream().anyMatch((pair) -> (pair.first.equals(listener)))) {
throw new IllegalArgumentException("listener was already regestered"
+ " for the device");
}
}
Pair<OnMetadataChangedListener, Executor> listenerPair = new Pair(listener, executor);
listenerList.add(listenerPair);
boolean ret = false;
try {
ret = service.registerMetadataListener(sBluetoothMetadataListener, device);
} catch (RemoteException e) {
Log.e(TAG, "registerMetadataListener fail", e);
} finally {
if (!ret) {
// Remove listener registered earlier when fail.
listenerList.remove(listenerPair);
if (listenerList.isEmpty()) {
// Remove the device if its listener list is empty
sMetadataListeners.remove(device);
}
}
}
return ret;
}
}
/**
* Unregister a {@link #OnMetadataChangedListener} from a registered {@link BluetoothDevice}.
* Unregistration can be done when Bluetooth is either ON or OFF.
* {@link #addOnMetadataChangedListener(OnMetadataChangedListener, BluetoothDevice, Executor)}
* must be called before unregisteration.
*
* @param device {@link BluetoothDevice} that will be unregistered. It
* should not be null or {@link NullPointerException} will be triggered.
* @param listener {@link OnMetadataChangedListener} that will be unregistered. It
* should not be null or {@link NullPointerException} will be triggered.
* @return true on success, false on error
* @throws NullPointerException If {@code listener} or {@code device} is null.
* @throws IllegalArgumentException If {@code device} has not been registered before.
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
public boolean removeOnMetadataChangedListener(@NonNull BluetoothDevice device,
@NonNull OnMetadataChangedListener listener) {
if (DBG) Log.d(TAG, "removeOnMetadataChangedListener()");
if (device == null) {
throw new NullPointerException("device is null");
}
if (listener == null) {
throw new NullPointerException("listener is null");
}
synchronized (sMetadataListeners) {
if (!sMetadataListeners.containsKey(device)) {
throw new IllegalArgumentException("device was not registered");
}
// Remove issued listener from the registered device
sMetadataListeners.get(device).removeIf((pair) -> (pair.first.equals(listener)));
if (sMetadataListeners.get(device).isEmpty()) {
// Unregister to Bluetooth service if all listeners are removed from
// the registered device
sMetadataListeners.remove(device);
final IBluetooth service = mService;
if (service == null) {
// Bluetooth is OFF, do nothing to Bluetooth service.
return true;
}
try {
return service.unregisterMetadataListener(device);
} catch (RemoteException e) {
Log.e(TAG, "unregisterMetadataListener fail", e);
return false;
}
}
}
return true;
}
/**
* This interface is used to implement {@link BluetoothAdapter} metadata listener.
* @hide
*/
@SystemApi
public interface OnMetadataChangedListener {
/**
* Callback triggered if the metadata of {@link BluetoothDevice} registered in
* {@link #addOnMetadataChangedListener}.
*
* @param device changed {@link BluetoothDevice}.
* @param key changed metadata key, one of BluetoothDevice.METADATA_*.
* @param value the new value of metadata as byte array.
*/
void onMetadataChanged(@NonNull BluetoothDevice device, int key,
@Nullable byte[] value);
}
/**
* Converts old constant of priority to the new for connection policy
*
* @param priority is the priority to convert to connection policy
* @return the equivalent connection policy constant to the priority
*
* @hide
*/
public static @ConnectionPolicy int priorityToConnectionPolicy(int priority) {
switch(priority) {
case BluetoothProfile.PRIORITY_AUTO_CONNECT:
return BluetoothProfile.CONNECTION_POLICY_ALLOWED;
case BluetoothProfile.PRIORITY_ON:
return BluetoothProfile.CONNECTION_POLICY_ALLOWED;
case BluetoothProfile.PRIORITY_OFF:
return BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
case BluetoothProfile.PRIORITY_UNDEFINED:
return BluetoothProfile.CONNECTION_POLICY_UNKNOWN;
default:
Log.e(TAG, "setPriority: Invalid priority: " + priority);
return BluetoothProfile.CONNECTION_POLICY_UNKNOWN;
}
}
/**
* Converts new constant of connection policy to the old for priority
*
* @param connectionPolicy is the connection policy to convert to priority
* @return the equivalent priority constant to the connectionPolicy
*
* @hide
*/
public static int connectionPolicyToPriority(@ConnectionPolicy int connectionPolicy) {
switch(connectionPolicy) {
case BluetoothProfile.CONNECTION_POLICY_ALLOWED:
return BluetoothProfile.PRIORITY_ON;
case BluetoothProfile.CONNECTION_POLICY_FORBIDDEN:
return BluetoothProfile.PRIORITY_OFF;
case BluetoothProfile.CONNECTION_POLICY_UNKNOWN:
return BluetoothProfile.PRIORITY_UNDEFINED;
}
return BluetoothProfile.PRIORITY_UNDEFINED;
}
}