android/android-9.0.0_r35 : android/bluetooth/BluetoothHealth.java

BluetoothHealth
https://source.android.com/
/*
 * Copyright (C) 2011 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.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Binder;
import android.os.IBinder;
import android.os.ParcelFileDescriptor;
import android.os.RemoteException;
import android.util.Log;

import java.util.ArrayList;
import java.util.List;

Public API for Bluetooth Health Profile.
BluetoothHealth is a proxy object for controlling the Bluetooth
Service via IPC.
 How to connect to a health device which is acting in the source role.
 Use BluetoothAdapter.getProfileProxy to get the BluetoothHealth proxy object. 
 Create an BluetoothHealth callback and call registerSinkAppConfiguration to register an application configuration 
 Pair with the remote device. This currently needs to be done manually
from Bluetooth Settings 
 Connect to a health device using connectChannelToSource. Some devices will connect the channel automatically. The BluetoothHealth callback will inform the application of channel state change. 
 Use the file descriptor provided with a connected channel to read and
write data to the health channel. 
 The received data needs to be interpreted using a health manager which
implements the IEEE 11073-xxxxx specifications.
 When done, close the health channel by calling disconnectChannel and unregister the application configuration calling unregisterAppConfiguration /**
 * Public API for Bluetooth Health Profile.
 *
 * <p>BluetoothHealth is a proxy object for controlling the Bluetooth
 * Service via IPC.
 *
 * <p> How to connect to a health device which is acting in the source role.
 * <li> Use {@link BluetoothAdapter#getProfileProxy} to get
 * the BluetoothHealth proxy object. </li>
 * <li> Create an {@link BluetoothHealth} callback and call
 * {@link #registerSinkAppConfiguration} to register an application
 * configuration </li>
 * <li> Pair with the remote device. This currently needs to be done manually
 * from Bluetooth Settings </li>
 * <li> Connect to a health device using {@link #connectChannelToSource}. Some
 * devices will connect the channel automatically. The {@link BluetoothHealth}
 * callback will inform the application of channel state change. </li>
 * <li> Use the file descriptor provided with a connected channel to read and
 * write data to the health channel. </li>
 * <li> The received data needs to be interpreted using a health manager which
 * implements the IEEE 11073-xxxxx specifications.
 * <li> When done, close the health channel by calling {@link #disconnectChannel}
 * and unregister the application configuration calling
 * {@link #unregisterAppConfiguration}
 */
public final class BluetoothHealth implements BluetoothProfile {
    private static final String TAG = "BluetoothHealth";
    private static final boolean DBG = true;
    private static final boolean VDBG = false;

    Health Profile Source Role - the health device.
/**
     * Health Profile Source Role - the health device.
     */
    public static final int SOURCE_ROLE = 1 << 0;

    Health Profile Sink Role the device talking to the health device.
/**
     * Health Profile Sink Role the device talking to the health device.
     */
    public static final int SINK_ROLE = 1 << 1;

    Health Profile - Channel Type used - Reliable
/**
     * Health Profile - Channel Type used - Reliable
     */
    public static final int CHANNEL_TYPE_RELIABLE = 10;

    Health Profile - Channel Type used - Streaming
/**
     * Health Profile - Channel Type used - Streaming
     */
    public static final int CHANNEL_TYPE_STREAMING = 11;

    @hide /**
     * @hide
     */
    public static final int CHANNEL_TYPE_ANY = 12;

    @hide /** @hide */
    public static final int HEALTH_OPERATION_SUCCESS = 6000;
    @hide /** @hide */
    public static final int HEALTH_OPERATION_ERROR = 6001;
    @hide /** @hide */
    public static final int HEALTH_OPERATION_INVALID_ARGS = 6002;
    @hide /** @hide */
    public static final int HEALTH_OPERATION_GENERIC_FAILURE = 6003;
    @hide /** @hide */
    public static final int HEALTH_OPERATION_NOT_FOUND = 6004;
    @hide /** @hide */
    public static final int HEALTH_OPERATION_NOT_ALLOWED = 6005;

    private final IBluetoothStateChangeCallback mBluetoothStateChangeCallback =
            new IBluetoothStateChangeCallback.Stub() {
                public void onBluetoothStateChange(boolean up) {
                    if (DBG) Log.d(TAG, "onBluetoothStateChange: up=" + up);
                    if (!up) {
                        if (VDBG) Log.d(TAG, "Unbinding service...");
                        synchronized (mConnection) {
                            try {
                                mService = null;
                                mContext.unbindService(mConnection);
                            } catch (Exception re) {
                                Log.e(TAG, "", re);
                            }
                        }
                    } else {
                        synchronized (mConnection) {
                            try {
                                if (mService == null) {
                                    if (VDBG) Log.d(TAG, "Binding service...");
                                    doBind();
                                }
                            } catch (Exception re) {
                                Log.e(TAG, "", re);
                            }
                        }
                    }
                }
            };


    Register an application configuration that acts as a Health SINK. This is the configuration that will be used to communicate with health devices which will act as the SOURCE_ROLE. This is an asynchronous call and so the callback is used to notify success or failure if the function returns true. Requires BLUETOOTH.BLUETOOTH permission. 
Params: name – The friendly name associated with the application or configuration.
dataType – The dataType of the Source role of Health Profile to which the sink wants to
connect to.
callback – A callback to indicate success or failure of the registration and all
operations done on this application configuration.
Returns: If true, callback will be called./**
     * Register an application configuration that acts as a Health SINK.
     * This is the configuration that will be used to communicate with health devices
     * which will act as the {@link #SOURCE_ROLE}. This is an asynchronous call and so
     * the callback is used to notify success or failure if the function returns true.
     *
     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
     *
     * @param name The friendly name associated with the application or configuration.
     * @param dataType The dataType of the Source role of Health Profile to which the sink wants to
     * connect to.
     * @param callback A callback to indicate success or failure of the registration and all
     * operations done on this application configuration.
     * @return If true, callback will be called.
     */
    public boolean registerSinkAppConfiguration(String name, int dataType,
            BluetoothHealthCallback callback) {
        if (!isEnabled() || name == null) return false;

        if (VDBG) log("registerSinkApplication(" + name + ":" + dataType + ")");
        return registerAppConfiguration(name, dataType, SINK_ROLE,
                CHANNEL_TYPE_ANY, callback);
    }

    Register an application configuration that acts as a Health SINK or in a Health
SOURCE role.This is an asynchronous call and so
the callback is used to notify success or failure if the function returns true.
Requires BLUETOOTH.BLUETOOTH permission. 
Params: name – The friendly name associated with the application or configuration.
dataType – The dataType of the Source role of Health Profile.
channelType – The channel type. Will be one of CHANNEL_TYPE_RELIABLE or CHANNEL_TYPE_STREAMING
callback – - A callback to indicate success or failure.
Returns: If true, callback will be called.
@hide /**
     * Register an application configuration that acts as a Health SINK or in a Health
     * SOURCE role.This is an asynchronous call and so
     * the callback is used to notify success or failure if the function returns true.
     *
     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
     *
     * @param name The friendly name associated with the application or configuration.
     * @param dataType The dataType of the Source role of Health Profile.
     * @param channelType The channel type. Will be one of {@link #CHANNEL_TYPE_RELIABLE}  or {@link
     * #CHANNEL_TYPE_STREAMING}
     * @param callback - A callback to indicate success or failure.
     * @return If true, callback will be called.
     * @hide
     */
    public boolean registerAppConfiguration(String name, int dataType, int role,
            int channelType, BluetoothHealthCallback callback) {
        boolean result = false;
        if (!isEnabled() || !checkAppParam(name, role, channelType, callback)) return result;

        if (VDBG) log("registerApplication(" + name + ":" + dataType + ")");
        BluetoothHealthCallbackWrapper wrapper = new BluetoothHealthCallbackWrapper(callback);
        BluetoothHealthAppConfiguration config =
                new BluetoothHealthAppConfiguration(name, dataType, role, channelType);

        final IBluetoothHealth service = mService;
        if (service != null) {
            try {
                result = service.registerAppConfiguration(config, wrapper);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString());
            }
        } else {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
        }
        return result;
    }

    Unregister an application configuration that has been registered using registerSinkAppConfiguration Requires BLUETOOTH.BLUETOOTH permission. 
Params: config – The health app configuration
Returns: Success or failure./**
     * Unregister an application configuration that has been registered using
     * {@link #registerSinkAppConfiguration}
     *
     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
     *
     * @param config The health app configuration
     * @return Success or failure.
     */
    public boolean unregisterAppConfiguration(BluetoothHealthAppConfiguration config) {
        boolean result = false;
        final IBluetoothHealth service = mService;
        if (service != null && isEnabled() && config != null) {
            try {
                result = service.unregisterAppConfiguration(config);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString());
            }
        } else {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
        }

        return result;
    }

    Connect to a health device which has the SOURCE_ROLE. This is an asynchronous call. If this function returns true, the callback associated with the application configuration will be called. Requires BLUETOOTH.BLUETOOTH permission. 
Params: device – The remote Bluetooth device.
config – The application configuration which has been registered using registerSinkAppConfiguration(String, int, BluetoothHealthCallback)
Returns: If true, the callback associated with the application config will be called./**
     * Connect to a health device which has the {@link #SOURCE_ROLE}.
     * This is an asynchronous call. If this function returns true, the callback
     * associated with the application configuration will be called.
     *
     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
     *
     * @param device The remote Bluetooth device.
     * @param config The application configuration which has been registered using {@link
     * #registerSinkAppConfiguration(String, int, BluetoothHealthCallback) }
     * @return If true, the callback associated with the application config will be called.
     */
    public boolean connectChannelToSource(BluetoothDevice device,
            BluetoothHealthAppConfiguration config) {
        final IBluetoothHealth service = mService;
        if (service != null && isEnabled() && isValidDevice(device) && config != null) {
            try {
                return service.connectChannelToSource(device, config);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString());
            }
        } else {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
        }
        return false;
    }

    Connect to a health device which has the SINK_ROLE. This is an asynchronous call. If this function returns true, the callback associated with the application configuration will be called. Requires BLUETOOTH.BLUETOOTH permission. 
Params: device – The remote Bluetooth device.
config – The application configuration which has been registered using registerSinkAppConfiguration(String, int, BluetoothHealthCallback)
Returns: If true, the callback associated with the application config will be called.
@hide /**
     * Connect to a health device which has the {@link #SINK_ROLE}.
     * This is an asynchronous call. If this function returns true, the callback
     * associated with the application configuration will be called.
     *
     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
     *
     * @param device The remote Bluetooth device.
     * @param config The application configuration which has been registered using {@link
     * #registerSinkAppConfiguration(String, int, BluetoothHealthCallback) }
     * @return If true, the callback associated with the application config will be called.
     * @hide
     */
    public boolean connectChannelToSink(BluetoothDevice device,
            BluetoothHealthAppConfiguration config, int channelType) {
        final IBluetoothHealth service = mService;
        if (service != null && isEnabled() && isValidDevice(device) && config != null) {
            try {
                return service.connectChannelToSink(device, config, channelType);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString());
            }
        } else {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
        }
        return false;
    }

    Disconnect a connected health channel.
This is an asynchronous call. If this function returns true, the callback
associated with the application configuration will be called.
Requires BLUETOOTH.BLUETOOTH permission. 
Params: device – The remote Bluetooth device.
config – The application configuration which has been registered using registerSinkAppConfiguration(String, int, BluetoothHealthCallback)
channelId – The channel id associated with the channel
Returns: If true, the callback associated with the application config will be called./**
     * Disconnect a connected health channel.
     * This is an asynchronous call. If this function returns true, the callback
     * associated with the application configuration will be called.
     *
     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
     *
     * @param device The remote Bluetooth device.
     * @param config The application configuration which has been registered using {@link
     * #registerSinkAppConfiguration(String, int, BluetoothHealthCallback) }
     * @param channelId The channel id associated with the channel
     * @return If true, the callback associated with the application config will be called.
     */
    public boolean disconnectChannel(BluetoothDevice device,
            BluetoothHealthAppConfiguration config, int channelId) {
        final IBluetoothHealth service = mService;
        if (service != null && isEnabled() && isValidDevice(device) && config != null) {
            try {
                return service.disconnectChannel(device, config, channelId);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString());
            }
        } else {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
        }
        return false;
    }

    Get the file descriptor of the main channel associated with the remote device
and application configuration.
Requires BLUETOOTH.BLUETOOTH permission. 
 Its the responsibility of the caller to close the ParcelFileDescriptor
when done.
Params: device – The remote Bluetooth health device
config – The application configuration
Returns: null on failure, ParcelFileDescriptor on success./**
     * Get the file descriptor of the main channel associated with the remote device
     * and application configuration.
     *
     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
     *
     * <p> Its the responsibility of the caller to close the ParcelFileDescriptor
     * when done.
     *
     * @param device The remote Bluetooth health device
     * @param config The application configuration
     * @return null on failure, ParcelFileDescriptor on success.
     */
    public ParcelFileDescriptor getMainChannelFd(BluetoothDevice device,
            BluetoothHealthAppConfiguration config) {
        final IBluetoothHealth service = mService;
        if (service != null && isEnabled() && isValidDevice(device) && config != null) {
            try {
                return service.getMainChannelFd(device, config);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString());
            }
        } else {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
        }
        return null;
    }

    Get the current connection state of the profile.
Requires BLUETOOTH.BLUETOOTH permission. This is not specific to any application configuration but represents the connection state of the local Bluetooth adapter with the remote device. This can be used by applications like status bar which would just like to know the state of the local adapter. 
Params: device – Remote bluetooth device.
Returns: State of the profile connection. One of BluetoothProfile.STATE_CONNECTED, BluetoothProfile.STATE_CONNECTING, BluetoothProfile.STATE_DISCONNECTED, BluetoothProfile.STATE_DISCONNECTING/**
     * Get the current connection state of the profile.
     *
     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
     *
     * This is not specific to any application configuration but represents the connection
     * state of the local Bluetooth adapter with the remote device. This can be used
     * by applications like status bar which would just like to know the state of the
     * local adapter.
     *
     * @param device Remote bluetooth device.
     * @return State of the profile connection. One of {@link #STATE_CONNECTED}, {@link
     * #STATE_CONNECTING}, {@link #STATE_DISCONNECTED}, {@link #STATE_DISCONNECTING}
     */
    @Override
    public int getConnectionState(BluetoothDevice device) {
        final IBluetoothHealth service = mService;
        if (service != null && isEnabled() && isValidDevice(device)) {
            try {
                return service.getHealthDeviceConnectionState(device);
            } catch (RemoteException e) {
                Log.e(TAG, e.toString());
            }
        } else {
            Log.w(TAG, "Proxy not attached to service");
            if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
        }
        return STATE_DISCONNECTED;
    }

    Get connected devices for the health profile.
 Return the set of devices which are in state BluetoothProfile.STATE_CONNECTED 
Requires BLUETOOTH.BLUETOOTH permission. This is not specific to any application configuration but represents the connection state of the local Bluetooth adapter for this profile. This can be used by applications like status bar which would just like to know the state of the local adapter. 
Returns: List of devices. The list will be empty on error./**
     * Get connected devices for the health profile.
     *
     * <p> Return the set of devices which are in state {@link #STATE_CONNECTED}
     *
     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
     *
     * This is not specific to any application configuration but represents the connection
     * state of the local Bluetooth adapter for this profile. This can be used
     * by applications like status bar which would just like to know the state of the
     * local adapter.
     *
     * @return List of devices. The list will be empty on error.
     */
    @Override
    public List<BluetoothDevice> getConnectedDevices() {
        final IBluetoothHealth service = mService;
        if (service != null && isEnabled()) {
            try {
                return service.getConnectedHealthDevices();
            } catch (RemoteException e) {
                Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
                return new ArrayList<BluetoothDevice>();
            }
        }
        if (service == null) Log.w(TAG, "Proxy not attached to service");
        return new ArrayList<BluetoothDevice>();
    }

    Get a list of devices that match any of the given connection
states.
 If none of the devices match any of the given states,
an empty list will be returned.
Requires BLUETOOTH.BLUETOOTH permission. This is not specific to any application configuration but represents the connection state of the local Bluetooth adapter for this profile. This can be used by applications like status bar which would just like to know the state of the local adapter. 
Params: states – Array of states. States can be one of BluetoothProfile.STATE_CONNECTED, BluetoothProfile.STATE_CONNECTING, BluetoothProfile.STATE_DISCONNECTED, BluetoothProfile.STATE_DISCONNECTING,
Returns: List of devices. The list will be empty on error./**
     * Get a list of devices that match any of the given connection
     * states.
     *
     * <p> If none of the devices match any of the given states,
     * an empty list will be returned.
     *
     * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
     * This is not specific to any application configuration but represents the connection
     * state of the local Bluetooth adapter for this profile. This can be used
     * by applications like status bar which would just like to know the state of the
     * local adapter.
     *
     * @param states Array of states. States can be one of {@link #STATE_CONNECTED}, {@link
     * #STATE_CONNECTING}, {@link #STATE_DISCONNECTED}, {@link #STATE_DISCONNECTING},
     * @return List of devices. The list will be empty on error.
     */
    @Override
    public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
        final IBluetoothHealth service = mService;
        if (service != null && isEnabled()) {
            try {
                return service.getHealthDevicesMatchingConnectionStates(states);
            } catch (RemoteException e) {
                Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
                return new ArrayList<BluetoothDevice>();
            }
        }
        if (service == null) Log.w(TAG, "Proxy not attached to service");
        return new ArrayList<BluetoothDevice>();
    }

    private static class BluetoothHealthCallbackWrapper extends IBluetoothHealthCallback.Stub {
        private BluetoothHealthCallback mCallback;

        public BluetoothHealthCallbackWrapper(BluetoothHealthCallback callback) {
            mCallback = callback;
        }

        @Override
        public void onHealthAppConfigurationStatusChange(BluetoothHealthAppConfiguration config,
                int status) {
            mCallback.onHealthAppConfigurationStatusChange(config, status);
        }

        @Override
        public void onHealthChannelStateChange(BluetoothHealthAppConfiguration config,
                BluetoothDevice device, int prevState, int newState,
                ParcelFileDescriptor fd, int channelId) {
            mCallback.onHealthChannelStateChange(config, device, prevState, newState, fd,
                    channelId);
        }
    }

    Health Channel Connection State - Disconnected /** Health Channel Connection State - Disconnected */
    public static final int STATE_CHANNEL_DISCONNECTED = 0;
    Health Channel Connection State - Connecting /** Health Channel Connection State - Connecting */
    public static final int STATE_CHANNEL_CONNECTING = 1;
    Health Channel Connection State - Connected /** Health Channel Connection State - Connected */
    public static final int STATE_CHANNEL_CONNECTED = 2;
    Health Channel Connection State - Disconnecting /** Health Channel Connection State - Disconnecting */
    public static final int STATE_CHANNEL_DISCONNECTING = 3;

    Health App Configuration registration success /** Health App Configuration registration success */
    public static final int APP_CONFIG_REGISTRATION_SUCCESS = 0;
    Health App Configuration registration failure /** Health App Configuration registration failure */
    public static final int APP_CONFIG_REGISTRATION_FAILURE = 1;
    Health App Configuration un-registration success /** Health App Configuration un-registration success */
    public static final int APP_CONFIG_UNREGISTRATION_SUCCESS = 2;
    Health App Configuration un-registration failure /** Health App Configuration un-registration failure */
    public static final int APP_CONFIG_UNREGISTRATION_FAILURE = 3;

    private Context mContext;
    private ServiceListener mServiceListener;
    private volatile IBluetoothHealth mService;
    BluetoothAdapter mAdapter;

    Create a BluetoothHealth proxy object.
/**
     * Create a BluetoothHealth proxy object.
     */
    /*package*/ BluetoothHealth(Context context, ServiceListener l) {
        mContext = context;
        mServiceListener = l;
        mAdapter = BluetoothAdapter.getDefaultAdapter();
        IBluetoothManager mgr = mAdapter.getBluetoothManager();
        if (mgr != null) {
            try {
                mgr.registerStateChangeCallback(mBluetoothStateChangeCallback);
            } catch (RemoteException e) {
                Log.e(TAG, "", e);
            }
        }

        doBind();
    }

    boolean doBind() {
        Intent intent = new Intent(IBluetoothHealth.class.getName());
        ComponentName comp = intent.resolveSystemService(mContext.getPackageManager(), 0);
        intent.setComponent(comp);
        if (comp == null || !mContext.bindServiceAsUser(intent, mConnection, 0,
                mContext.getUser())) {
            Log.e(TAG, "Could not bind to Bluetooth Health Service with " + intent);
            return false;
        }
        return true;
    }

    /*package*/ void close() {
        if (VDBG) log("close()");
        IBluetoothManager mgr = mAdapter.getBluetoothManager();
        if (mgr != null) {
            try {
                mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback);
            } catch (Exception e) {
                Log.e(TAG, "", e);
            }
        }

        synchronized (mConnection) {
            if (mService != null) {
                try {
                    mService = null;
                    mContext.unbindService(mConnection);
                } catch (Exception re) {
                    Log.e(TAG, "", re);
                }
            }
        }
        mServiceListener = null;
    }

    private final ServiceConnection mConnection = new ServiceConnection() {
        public void onServiceConnected(ComponentName className, IBinder service) {
            if (DBG) Log.d(TAG, "Proxy object connected");
            mService = IBluetoothHealth.Stub.asInterface(Binder.allowBlocking(service));

            if (mServiceListener != null) {
                mServiceListener.onServiceConnected(BluetoothProfile.HEALTH, BluetoothHealth.this);
            }
        }

        public void onServiceDisconnected(ComponentName className) {
            if (DBG) Log.d(TAG, "Proxy object disconnected");
            mService = null;
            if (mServiceListener != null) {
                mServiceListener.onServiceDisconnected(BluetoothProfile.HEALTH);
            }
        }
    };

    private boolean isEnabled() {
        BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();

        if (adapter != null && adapter.getState() == BluetoothAdapter.STATE_ON) return true;
        log("Bluetooth is Not enabled");
        return false;
    }

    private static boolean isValidDevice(BluetoothDevice device) {
        return device != null && BluetoothAdapter.checkBluetoothAddress(device.getAddress());
    }

    private boolean checkAppParam(String name, int role, int channelType,
            BluetoothHealthCallback callback) {
        if (name == null || (role != SOURCE_ROLE && role != SINK_ROLE)
                || (channelType != CHANNEL_TYPE_RELIABLE && channelType != CHANNEL_TYPE_STREAMING
                    && channelType != CHANNEL_TYPE_ANY)
                || callback == null) {
            return false;
        }
        if (role == SOURCE_ROLE && channelType == CHANNEL_TYPE_ANY) return false;
        return true;
    }

    private static void log(String msg) {
        Log.d(TAG, msg);
    }
}
Params:	name – The friendly name associated with the application or configuration. dataType – The dataType of the Source role of Health Profile to which the sink wants to connect to. callback – A callback to indicate success or failure of the registration and all operations done on this application configuration.
Returns:	If true, callback will be called.
Params:	config – The health app configuration
Returns:	Success or failure.
Params:	device – The remote Bluetooth device. config – The application configuration which has been registered using `registerSinkAppConfiguration(String, int, BluetoothHealthCallback)`
Returns:	If true, the callback associated with the application config will be called.
Params:	device – The remote Bluetooth health device config – The application configuration
Returns:	null on failure, ParcelFileDescriptor on success.
Params:	device – Remote bluetooth device.
Returns:	State of the profile connection. One of `BluetoothProfile.STATE_CONNECTED`, `BluetoothProfile.STATE_CONNECTING`, `BluetoothProfile.STATE_DISCONNECTED`, `BluetoothProfile.STATE_DISCONNECTING`
Params:	states – Array of states. States can be one of `BluetoothProfile.STATE_CONNECTED`, `BluetoothProfile.STATE_CONNECTING`, `BluetoothProfile.STATE_DISCONNECTED`, `BluetoothProfile.STATE_DISCONNECTING`,
Returns:	List of devices. The list will be empty on error.
/

android/ android-9.0.0_r35/ android/bluetooth/BluetoothHealth.java
