src.android.bluetooth.BluetoothHidDevice Maven / Gradle / Ivy
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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.bluetooth;
import android.Manifest;
import android.annotation.NonNull;
import android.annotation.RequiresPermission;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.annotation.SystemApi;
import android.bluetooth.annotations.RequiresBluetoothConnectPermission;
import android.bluetooth.annotations.RequiresLegacyBluetoothPermission;
import android.content.Attributable;
import android.content.AttributionSource;
import android.content.Context;
import android.os.Binder;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executor;
/**
* Provides the public APIs to control the Bluetooth HID Device profile.
*
* BluetoothHidDevice is a proxy object for controlling the Bluetooth HID Device Service via IPC.
* Use {@link BluetoothAdapter#getProfileProxy} to get the BluetoothHidDevice proxy object.
*/
public final class BluetoothHidDevice implements BluetoothProfile {
private static final String TAG = BluetoothHidDevice.class.getSimpleName();
private static final boolean DBG = false;
/**
* Intent used to broadcast the change in connection state of the Input Host profile.
*
*
This intent will have 3 extras:
*
*
* - {@link #EXTRA_STATE} - The current state of the profile.
*
- {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.
*
- {@link BluetoothDevice#EXTRA_DEVICE} - The remote device.
*
*
* {@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of {@link
* #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, {@link #STATE_CONNECTED}, {@link
* #STATE_DISCONNECTING}.
*/
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_CONNECTION_STATE_CHANGED =
"android.bluetooth.hiddevice.profile.action.CONNECTION_STATE_CHANGED";
/**
* Constant representing unspecified HID device subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS1_NONE = (byte) 0x00;
/**
* Constant representing keyboard subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS1_KEYBOARD = (byte) 0x40;
/**
* Constant representing mouse subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS1_MOUSE = (byte) 0x80;
/**
* Constant representing combo keyboard and mouse subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS1_COMBO = (byte) 0xC0;
/**
* Constant representing uncategorized HID device subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS2_UNCATEGORIZED = (byte) 0x00;
/**
* Constant representing joystick subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS2_JOYSTICK = (byte) 0x01;
/**
* Constant representing gamepad subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS2_GAMEPAD = (byte) 0x02;
/**
* Constant representing remote control subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS2_REMOTE_CONTROL = (byte) 0x03;
/**
* Constant representing sensing device subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS2_SENSING_DEVICE = (byte) 0x04;
/**
* Constant representing digitizer tablet subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS2_DIGITIZER_TABLET = (byte) 0x05;
/**
* Constant representing card reader subclass.
*
* @see #registerApp (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)
*/
public static final byte SUBCLASS2_CARD_READER = (byte) 0x06;
/**
* Constant representing HID Input Report type.
*
* @see Callback#onGetReport(BluetoothDevice, byte, byte, int)
* @see Callback#onSetReport(BluetoothDevice, byte, byte, byte[])
* @see Callback#onInterruptData(BluetoothDevice, byte, byte[])
*/
public static final byte REPORT_TYPE_INPUT = (byte) 1;
/**
* Constant representing HID Output Report type.
*
* @see Callback#onGetReport(BluetoothDevice, byte, byte, int)
* @see Callback#onSetReport(BluetoothDevice, byte, byte, byte[])
* @see Callback#onInterruptData(BluetoothDevice, byte, byte[])
*/
public static final byte REPORT_TYPE_OUTPUT = (byte) 2;
/**
* Constant representing HID Feature Report type.
*
* @see Callback#onGetReport(BluetoothDevice, byte, byte, int)
* @see Callback#onSetReport(BluetoothDevice, byte, byte, byte[])
* @see Callback#onInterruptData(BluetoothDevice, byte, byte[])
*/
public static final byte REPORT_TYPE_FEATURE = (byte) 3;
/**
* Constant representing success response for Set Report.
*
* @see Callback#onSetReport(BluetoothDevice, byte, byte, byte[])
*/
public static final byte ERROR_RSP_SUCCESS = (byte) 0;
/**
* Constant representing error response for Set Report due to "not ready".
*
* @see Callback#onSetReport(BluetoothDevice, byte, byte, byte[])
*/
public static final byte ERROR_RSP_NOT_READY = (byte) 1;
/**
* Constant representing error response for Set Report due to "invalid report ID".
*
* @see Callback#onSetReport(BluetoothDevice, byte, byte, byte[])
*/
public static final byte ERROR_RSP_INVALID_RPT_ID = (byte) 2;
/**
* Constant representing error response for Set Report due to "unsupported request".
*
* @see Callback#onSetReport(BluetoothDevice, byte, byte, byte[])
*/
public static final byte ERROR_RSP_UNSUPPORTED_REQ = (byte) 3;
/**
* Constant representing error response for Set Report due to "invalid parameter".
*
* @see Callback#onSetReport(BluetoothDevice, byte, byte, byte[])
*/
public static final byte ERROR_RSP_INVALID_PARAM = (byte) 4;
/**
* Constant representing error response for Set Report with unknown reason.
*
* @see Callback#onSetReport(BluetoothDevice, byte, byte, byte[])
*/
public static final byte ERROR_RSP_UNKNOWN = (byte) 14;
/**
* Constant representing boot protocol mode used set by host. Default is always {@link
* #PROTOCOL_REPORT_MODE} unless notified otherwise.
*
* @see Callback#onSetProtocol(BluetoothDevice, byte)
*/
public static final byte PROTOCOL_BOOT_MODE = (byte) 0;
/**
* Constant representing report protocol mode used set by host. Default is always {@link
* #PROTOCOL_REPORT_MODE} unless notified otherwise.
*
* @see Callback#onSetProtocol(BluetoothDevice, byte)
*/
public static final byte PROTOCOL_REPORT_MODE = (byte) 1;
/**
* The template class that applications use to call callback functions on events from the HID
* host. Callback functions are wrapped in this class and registered to the Android system
* during app registration.
*/
public abstract static class Callback {
private static final String TAG = "BluetoothHidDevCallback";
/**
* Callback called when application registration state changes. Usually it's called due to
* either {@link BluetoothHidDevice#registerApp (String, String, String, byte, byte[],
* Executor, Callback)} or {@link BluetoothHidDevice#unregisterApp()} , but can be also
* unsolicited in case e.g. Bluetooth was turned off in which case application is
* unregistered automatically.
*
* @param pluggedDevice {@link BluetoothDevice} object which represents host that currently
* has Virtual Cable established with device. Only valid when application is registered,
* can be null.
* @param registered true if application is registered, false
* otherwise.
*/
public void onAppStatusChanged(BluetoothDevice pluggedDevice, boolean registered) {
Log.d(
TAG,
"onAppStatusChanged: pluggedDevice="
+ pluggedDevice
+ " registered="
+ registered);
}
/**
* Callback called when connection state with remote host was changed. Application can
* assume than Virtual Cable is established when called with {@link
* BluetoothProfile#STATE_CONNECTED} state.
*
* @param device {@link BluetoothDevice} object representing host device which connection
* state was changed.
* @param state Connection state as defined in {@link BluetoothProfile}.
*/
public void onConnectionStateChanged(BluetoothDevice device, int state) {
Log.d(TAG, "onConnectionStateChanged: device=" + device + " state=" + state);
}
/**
* Callback called when GET_REPORT is received from remote host. Should be replied by
* application using {@link BluetoothHidDevice#replyReport(BluetoothDevice, byte, byte,
* byte[])}.
*
* @param type Requested Report Type.
* @param id Requested Report Id, can be 0 if no Report Id are defined in descriptor.
* @param bufferSize Requested buffer size, application shall respond with at least given
* number of bytes.
*/
public void onGetReport(BluetoothDevice device, byte type, byte id, int bufferSize) {
Log.d(
TAG,
"onGetReport: device="
+ device
+ " type="
+ type
+ " id="
+ id
+ " bufferSize="
+ bufferSize);
}
/**
* Callback called when SET_REPORT is received from remote host. In case received data are
* invalid, application shall respond with {@link
* BluetoothHidDevice#reportError(BluetoothDevice, byte)}.
*
* @param type Report Type.
* @param id Report Id.
* @param data Report data.
*/
public void onSetReport(BluetoothDevice device, byte type, byte id, byte[] data) {
Log.d(TAG, "onSetReport: device=" + device + " type=" + type + " id=" + id);
}
/**
* Callback called when SET_PROTOCOL is received from remote host. Application shall use
* this information to send only reports valid for given protocol mode. By default, {@link
* BluetoothHidDevice#PROTOCOL_REPORT_MODE} shall be assumed.
*
* @param protocol Protocol Mode.
*/
public void onSetProtocol(BluetoothDevice device, byte protocol) {
Log.d(TAG, "onSetProtocol: device=" + device + " protocol=" + protocol);
}
/**
* Callback called when report data is received over interrupt channel. Report Type is
* assumed to be {@link BluetoothHidDevice#REPORT_TYPE_OUTPUT}.
*
* @param reportId Report Id.
* @param data Report data.
*/
public void onInterruptData(BluetoothDevice device, byte reportId, byte[] data) {
Log.d(TAG, "onInterruptData: device=" + device + " reportId=" + reportId);
}
/**
* Callback called when Virtual Cable is removed. After this callback is received connection
* will be disconnected automatically.
*/
public void onVirtualCableUnplug(BluetoothDevice device) {
Log.d(TAG, "onVirtualCableUnplug: device=" + device);
}
}
private static class CallbackWrapper extends IBluetoothHidDeviceCallback.Stub {
private final Executor mExecutor;
private final Callback mCallback;
private final AttributionSource mAttributionSource;
CallbackWrapper(Executor executor, Callback callback, AttributionSource attributionSource) {
mExecutor = executor;
mCallback = callback;
mAttributionSource = attributionSource;
}
@Override
public void onAppStatusChanged(BluetoothDevice pluggedDevice, boolean registered) {
Attributable.setAttributionSource(pluggedDevice, mAttributionSource);
final long token = clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onAppStatusChanged(pluggedDevice, registered));
} finally {
restoreCallingIdentity(token);
}
}
@Override
public void onConnectionStateChanged(BluetoothDevice device, int state) {
Attributable.setAttributionSource(device, mAttributionSource);
final long token = clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onConnectionStateChanged(device, state));
} finally {
restoreCallingIdentity(token);
}
}
@Override
public void onGetReport(BluetoothDevice device, byte type, byte id, int bufferSize) {
Attributable.setAttributionSource(device, mAttributionSource);
final long token = clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onGetReport(device, type, id, bufferSize));
} finally {
restoreCallingIdentity(token);
}
}
@Override
public void onSetReport(BluetoothDevice device, byte type, byte id, byte[] data) {
Attributable.setAttributionSource(device, mAttributionSource);
final long token = clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onSetReport(device, type, id, data));
} finally {
restoreCallingIdentity(token);
}
}
@Override
public void onSetProtocol(BluetoothDevice device, byte protocol) {
Attributable.setAttributionSource(device, mAttributionSource);
final long token = clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onSetProtocol(device, protocol));
} finally {
restoreCallingIdentity(token);
}
}
@Override
public void onInterruptData(BluetoothDevice device, byte reportId, byte[] data) {
Attributable.setAttributionSource(device, mAttributionSource);
final long token = clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onInterruptData(device, reportId, data));
} finally {
restoreCallingIdentity(token);
}
}
@Override
public void onVirtualCableUnplug(BluetoothDevice device) {
Attributable.setAttributionSource(device, mAttributionSource);
final long token = clearCallingIdentity();
try {
mExecutor.execute(() -> mCallback.onVirtualCableUnplug(device));
} finally {
restoreCallingIdentity(token);
}
}
}
private final BluetoothAdapter mAdapter;
private final AttributionSource mAttributionSource;
private final BluetoothProfileConnector mProfileConnector =
new BluetoothProfileConnector(this, BluetoothProfile.HID_DEVICE,
"BluetoothHidDevice", IBluetoothHidDevice.class.getName()) {
@Override
public IBluetoothHidDevice getServiceInterface(IBinder service) {
return IBluetoothHidDevice.Stub.asInterface(Binder.allowBlocking(service));
}
};
BluetoothHidDevice(Context context, ServiceListener listener, BluetoothAdapter adapter) {
mAdapter = adapter;
mAttributionSource = adapter.getAttributionSource();
mProfileConnector.connect(context, listener);
}
void close() {
mProfileConnector.disconnect();
}
private IBluetoothHidDevice getService() {
return mProfileConnector.getService();
}
/** {@inheritDoc} */
@Override
@RequiresBluetoothConnectPermission
@RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
public List getConnectedDevices() {
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
return Attributable.setAttributionSource(
service.getConnectedDevices(mAttributionSource), mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return new ArrayList<>();
}
/** {@inheritDoc} */
@Override
@RequiresBluetoothConnectPermission
@RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
public List getDevicesMatchingConnectionStates(int[] states) {
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
return Attributable.setAttributionSource(
service.getDevicesMatchingConnectionStates(states, mAttributionSource),
mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return new ArrayList<>();
}
/** {@inheritDoc} */
@Override
@RequiresBluetoothConnectPermission
@RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
public int getConnectionState(BluetoothDevice device) {
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
return service.getConnectionState(device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return STATE_DISCONNECTED;
}
/**
* Registers application to be used for HID device. Connections to HID Device are only possible
* when application is registered. Only one application can be registered at one time. When an
* application is registered, the HID Host service will be disabled until it is unregistered.
* When no longer used, application should be unregistered using {@link #unregisterApp()}. The
* app will be automatically unregistered if it is not foreground. The registration status
* should be tracked by the application by handling callback from Callback#onAppStatusChanged.
* The app registration status is not related to the return value of this method.
*
* @param sdp {@link BluetoothHidDeviceAppSdpSettings} object of HID Device SDP record. The HID
* Device SDP record is required.
* @param inQos {@link BluetoothHidDeviceAppQosSettings} object of Incoming QoS Settings. The
* Incoming QoS Settings is not required. Use null or default
* BluetoothHidDeviceAppQosSettings.Builder for default values.
* @param outQos {@link BluetoothHidDeviceAppQosSettings} object of Outgoing QoS Settings. The
* Outgoing QoS Settings is not required. Use null or default
* BluetoothHidDeviceAppQosSettings.Builder for default values.
* @param executor {@link Executor} object on which callback will be executed. The Executor
* object is required.
* @param callback {@link Callback} object to which callback messages will be sent. The Callback
* object is required.
* @return true if the command is successfully sent; otherwise false.
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean registerApp(
BluetoothHidDeviceAppSdpSettings sdp,
BluetoothHidDeviceAppQosSettings inQos,
BluetoothHidDeviceAppQosSettings outQos,
Executor executor,
Callback callback) {
boolean result = false;
if (sdp == null) {
throw new IllegalArgumentException("sdp parameter cannot be null");
}
if (executor == null) {
throw new IllegalArgumentException("executor parameter cannot be null");
}
if (callback == null) {
throw new IllegalArgumentException("callback parameter cannot be null");
}
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
CallbackWrapper cbw = new CallbackWrapper(executor, callback, mAttributionSource);
result = service.registerApp(sdp, inQos, outQos, cbw, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return result;
}
/**
* Unregisters application. Active connection will be disconnected and no new connections will
* be allowed until registered again using {@link #registerApp
* (BluetoothHidDeviceAppQosSettings, BluetoothHidDeviceAppQosSettings,
* BluetoothHidDeviceAppQosSettings, Executor, Callback)}. The registration status should be
* tracked by the application by handling callback from Callback#onAppStatusChanged. The app
* registration status is not related to the return value of this method.
*
* @return true if the command is successfully sent; otherwise false.
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean unregisterApp() {
boolean result = false;
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
result = service.unregisterApp(mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return result;
}
/**
* Sends report to remote host using interrupt channel.
*
* @param id Report Id, as defined in descriptor. Can be 0 in case Report Id are not defined in
* descriptor.
* @param data Report data, not including Report Id.
* @return true if the command is successfully sent; otherwise false.
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean sendReport(BluetoothDevice device, int id, byte[] data) {
boolean result = false;
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
result = service.sendReport(device, id, data, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return result;
}
/**
* Sends report to remote host as reply for GET_REPORT request from {@link
* Callback#onGetReport(BluetoothDevice, byte, byte, int)}.
*
* @param type Report Type, as in request.
* @param id Report Id, as in request.
* @param data Report data, not including Report Id.
* @return true if the command is successfully sent; otherwise false.
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean replyReport(BluetoothDevice device, byte type, byte id, byte[] data) {
boolean result = false;
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
result = service.replyReport(device, type, id, data, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return result;
}
/**
* Sends error handshake message as reply for invalid SET_REPORT request from {@link
* Callback#onSetReport(BluetoothDevice, byte, byte, byte[])}.
*
* @param error Error to be sent for SET_REPORT via HANDSHAKE.
* @return true if the command is successfully sent; otherwise false.
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean reportError(BluetoothDevice device, byte error) {
boolean result = false;
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
result = service.reportError(device, error, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return result;
}
/**
* Gets the application name of the current HidDeviceService user.
*
* @return the current user name, or empty string if cannot get the name
* {@hide}
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public String getUserAppName() {
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
return service.getUserAppName(mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return "";
}
/**
* Initiates connection to host which is currently paired with this device. If the application
* is not registered, #connect(BluetoothDevice) will fail. The connection state should be
* tracked by the application by handling callback from Callback#onConnectionStateChanged. The
* connection state is not related to the return value of this method.
*
* @return true if the command is successfully sent; otherwise false.
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean connect(BluetoothDevice device) {
boolean result = false;
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
result = service.connect(device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return result;
}
/**
* Disconnects from currently connected host. The connection state should be tracked by the
* application by handling callback from Callback#onConnectionStateChanged. The connection state
* is not related to the return value of this method.
*
* @return true if the command is successfully sent; otherwise false.
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean disconnect(BluetoothDevice device) {
boolean result = false;
final IBluetoothHidDevice service = getService();
if (service != null) {
try {
result = service.disconnect(device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
}
return result;
}
/**
* Connects Hid Device if connectionPolicy is {@link BluetoothProfile#CONNECTION_POLICY_ALLOWED}
* and disconnects Hid device if connectionPolicy is
* {@link BluetoothProfile#CONNECTION_POLICY_FORBIDDEN}.
*
* The device should already be paired.
* Connection policy can be one of:
* {@link BluetoothProfile#CONNECTION_POLICY_ALLOWED},
* {@link BluetoothProfile#CONNECTION_POLICY_FORBIDDEN},
* {@link BluetoothProfile#CONNECTION_POLICY_UNKNOWN}
*
* @param device Paired bluetooth device
* @param connectionPolicy determines whether hid device should be connected or disconnected
* @return true if hid device is connected or disconnected, false otherwise
*
* @hide
*/
@SystemApi
@RequiresBluetoothConnectPermission
@RequiresPermission(allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
})
public boolean setConnectionPolicy(@NonNull BluetoothDevice device,
@ConnectionPolicy int connectionPolicy) {
log("setConnectionPolicy(" + device + ", " + connectionPolicy + ")");
try {
final IBluetoothHidDevice service = getService();
if (service != null && isEnabled()
&& isValidDevice(device)) {
if (connectionPolicy != BluetoothProfile.CONNECTION_POLICY_FORBIDDEN
&& connectionPolicy != BluetoothProfile.CONNECTION_POLICY_ALLOWED) {
return false;
}
return service.setConnectionPolicy(device, connectionPolicy, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return false;
}
}
private boolean isEnabled() {
if (mAdapter.getState() == BluetoothAdapter.STATE_ON) return true;
return false;
}
private boolean isValidDevice(BluetoothDevice device) {
if (device == null) return false;
if (BluetoothAdapter.checkBluetoothAddress(device.getAddress())) return true;
return false;
}
private static void log(String msg) {
if (DBG) {
Log.d(TAG, msg);
}
}
}