BluetoothLeService.java

package org.androidtown.identifyinglocation;
/**
 * Created by user on 2015-05-06.
 */
/*
 * Copyright (C) 2013 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.
 */
import android.app.Service;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothGatt;
import android.bluetooth.BluetoothGattCallback;
import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothGattDescriptor;
import android.bluetooth.BluetoothGattService;
import android.bluetooth.BluetoothManager;
import android.bluetooth.BluetoothProfile;
import android.content.Context;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;

import java.util.List;
import java.util.UUID;

/**
 * Service for managing connection and data communication with a GATT server hosted on a
 * given Bluetooth LE device.
 */
public class BluetoothLeService extends Service {
    private final static String TAG = BluetoothLeService.class.getSimpleName();

    private BluetoothManager mBluetoothManager;
    private BluetoothAdapter mBluetoothAdapter;
    private String mBluetoothDeviceAddress;
    private BluetoothGatt mBluetoothGatt;
    private int mConnectionState = STATE_DISCONNECTED;


    private static final int STATE_DISCONNECTED = 0;
    private static final int STATE_CONNECTING = 1;
    private static final int STATE_CONNECTED = 2;

    public final static String ACTION_GATT_CONNECTED =
            "com.example.bluetooth.le.ACTION_GATT_CONNECTED";
    public final static String ACTION_GATT_DISCONNECTED =
            "com.example.bluetooth.le.ACTION_GATT_DISCONNECTED";
    public final static String ACTION_GATT_SERVICES_DISCOVERED =
            "com.example.bluetooth.le.ACTION_GATT_SERVICES_DISCOVERED";
    public final static String ACTION_DATA_AVAILABLE =
            "com.example.bluetooth.le.ACTION_DATA_AVAILABLE";
    public final static String EXTRA_DATA =
            "com.example.bluetooth.le.EXTRA_DATA";
    public final static String EXTRA_DATA2 =
            "com.example.bluetooth.le.EXTRA_DATA2";

    /* 수정1 */
    public final static UUID UUID_RSSI_VALUE = UUID.fromString("0000ffe1-0000-1000-8000-00805f9b34fb");

    int sequence = 0;
    // Implements callback methods for GATT events that the app cares about.  For example,
    // connection change and services discovered.
    private final BluetoothGattCallback mGattCallback = new BluetoothGattCallback() {
        @Override
        public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
            String intentAction;
            if (newState == BluetoothProfile.STATE_CONNECTED) {
                intentAction = ACTION_GATT_CONNECTED;
                mConnectionState = STATE_CONNECTED;
                broadcastUpdate(intentAction);
                Log.i(TAG, "Connected to GATT server.");
                // Attempts to discover services after successful connection.
                Log.i(TAG, "Attempting to start service discovery:" +
                        mBluetoothGatt.discoverServices());

            } else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
                intentAction = ACTION_GATT_DISCONNECTED;
                mConnectionState = STATE_DISCONNECTED;
                Log.i(TAG, "Disconnected from GATT server.");
                broadcastUpdate(intentAction);
            }
        }

        @Override
        public void onServicesDiscovered(BluetoothGatt gatt, int status) {
            if (status == BluetoothGatt.GATT_SUCCESS) {
                broadcastUpdate(ACTION_GATT_SERVICES_DISCOVERED);

            } else {
                Log.w(TAG, "onServicesDiscovered received: " + status);
                Toast.makeText(getApplicationContext(), "click", Toast.LENGTH_LONG).show();
            }
        }

        @Override
        public void onCharacteristicRead(BluetoothGatt gatt,
                                         BluetoothGattCharacteristic characteristic,
                                         int status) {
            Log.d("mo", "onCharacteristicREAD BEFORE");
            if (status == BluetoothGatt.GATT_SUCCESS) {
                Log.d("mo", "onCharacteristicREAD");
                broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
            }
        }

        @Override
        public void onCharacteristicChanged(BluetoothGatt gatt,
                                            BluetoothGattCharacteristic characteristic) {
            Log.d("mo", "onCharacteristicChanged");
            broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
        }

        @Override
        public void onCharacteristicWrite(BluetoothGatt gatt,
                                          BluetoothGattCharacteristic characteristic, int status) {

            if (status == BluetoothGatt.GATT_SUCCESS) {
                Log.d("mo", "onCharacteristicREAD");
                broadcastUpdate(ACTION_DATA_AVAILABLE, characteristic);
            }
        }

    };

    private void broadcastUpdate(final String action) {
        final Intent intent = new Intent(action);
        sendBroadcast(intent);
    }

    private void broadcastUpdate(final String action,
                                 final BluetoothGattCharacteristic characteristic) {
        final Intent intent = new Intent(action);

        String str1, str2;

        str1 = characteristic.getUuid().toString();
        str2 = UUID_RSSI_VALUE.toString();
        Log.d("mo", "broadcastUpdate 1,2 " + str1 + " ? " + str2);
        /*if (UUID_HEART_RATE_MEASUREMENT.equals(characteristic.getUuid())) {
            /*
            int flag = characteristic.getProperties();
            int format = -1;
            if ((flag & 0x01) != 0) {
                format = BluetoothGattCharacteristic.FORMAT_UINT16;
                Log.d(TAG, "Heart rate format UINT16.");
            } else {
                format = BluetoothGattCharacteristic.FORMAT_UINT8;
                Log.d(TAG, "Heart rate format UINT8.");
            }
            final int heartRate = characteristic.getIntValue(format, 1);
            Log.d(TAG, String.format("Received heart rate: %d", heartRate));
            intent.putExtra(EXTRA_DATA, String.valueOf(heartRate));

        } else {*/
        // For all other profiles, writes the data formatted in HEX.

        final byte[] data = characteristic.getValue();

        if (data != null && data.length > 0) {
            if(data[0] != (byte)0x77 && data[0] !=(byte)0x78 &&data[0] !=(byte)0x79 && data[0] !=(byte)0x7A && data[0]!=(byte)0x76){
                final StringBuilder stringBuilder = new StringBuilder(data.length);

                for (byte byteChar : data)
                    stringBuilder.append(String.format("%02X ", byteChar));

                Log.d("step", "brodcastupdate in " + new String(data));
                intent.putExtra(EXTRA_DATA, new String(data));
                //intent.putExtra(Extra)
               // intent.putExtra(EXTRA_DATA2, state);
            }
            else Log.d("mo","brodcastupdate in : Same Write String");
        }
        Log.d("mo","brodcastupdate out");
        //  }
        sendBroadcast(intent);
    }

    public class LocalBinder extends Binder {
        BluetoothLeService getService() {
            return BluetoothLeService.this;
        }
    }

    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
    }

    @Override
    public boolean onUnbind(Intent intent) {
        // After using a given device, you should make sure that BluetoothGatt.close() is called
        // such that resources are cleaned up properly.  In this particular example, close() is
        // invoked when the UI is disconnected from the Service.
        close();
        return super.onUnbind(intent);
    }

    private final IBinder mBinder = new LocalBinder();

    /**
     * Initializes a reference to the local Bluetooth adapter.
     *
     * @return Return true if the initialization is successful.
     */
    public boolean initialize() {
        // For API level 18 and above, get a reference to BluetoothAdapter through
        // BluetoothManager.
        if (mBluetoothManager == null) {
            mBluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
            if (mBluetoothManager == null) {
                Log.e(TAG, "Unable to initialize BluetoothManager.");
                return false;
            }
        }

        mBluetoothAdapter = mBluetoothManager.getAdapter();
        if (mBluetoothAdapter == null) {
            Log.e(TAG, "Unable to obtain a BluetoothAdapter.");
            return false;
        }
        return true;
    }

    /**
     * Connects to the GATT server hosted on the Bluetooth LE device.
     *
     * @param address The device address of the destination device.
     *
     * @return Return true if the connection is initiated successfully. The connection result
     *         is reported asynchronously through the
     *         {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)}
     *         callback.
     */
    public boolean connect(final String address) {
        if (mBluetoothAdapter == null || address == null){
            Log.w(TAG, "BluetoothAdapter not initialized or unspecified address.");
            return false;
        }
        // Previously connected device.  Try to reconnect.
        if (mBluetoothDeviceAddress != null && address.equals(mBluetoothDeviceAddress)
                && mBluetoothGatt != null) {
            Log.d(TAG, "Trying to use an existing mBluetoothGatt for connection.");
            if (mBluetoothGatt.connect()) {
                mConnectionState = STATE_CONNECTING;
                return true;
            } else {
                return false;
            }
        }
        final BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
        if (device == null) {
            Log.w(TAG, "Device not found.  Unable to connect.");
            return false;
        }
        // We want to directly connect to the device, so we are setting the autoConnect
        // parameter to false.
        mBluetoothGatt = device.connectGatt(this, false, mGattCallback);
        Log.d(TAG, "Trying to create a new connection.");
        mBluetoothDeviceAddress = address;
        mConnectionState = STATE_CONNECTING;
        return true;
    }
    /**
     * Disconnects an existing connection or cancel a pending connection. The disconnection result
     * is reported asynchronously through the
     * {@code BluetoothGattCallback#onConnectionStateChange(android.bluetooth.BluetoothGatt, int, int)}
     * callback.
     */
    public void disconnect() {
        if (mBluetoothAdapter == null || mBluetoothGatt == null) {
            Log.w(TAG, "BluetoothAdapter not initialized");
            return;
        }
        mBluetoothGatt.disconnect();
    }

    /**
     * After using a given BLE device, the app must call this method to ensure resources are
     * released properly.
     */
    public void close(){
        if (mBluetoothGatt == null) {
            return;
        }
        mBluetoothGatt.close();
        mBluetoothGatt = null;
    }
    /**
     * Request a read on a given {@code BluetoothGattCharacteristic}. The read result is reported
     * asynchronously through the {@code BluetoothGattCallback#onCharacteristicRead(android.bluetooth.BluetoothGatt, android.bluetooth.BluetoothGattCharacteristic, int)}
     * callback.
     *
     * @param characteristic The characteristic to read from.
     */
    public void readCharacteristic(BluetoothGattCharacteristic characteristic) {
        if (mBluetoothAdapter == null || mBluetoothGatt == null) {
            Log.w(TAG, "BluetoothAdapter not initialized");
            return;
        }
        mBluetoothGatt.readCharacteristic(characteristic);
    }

    /**
     * Enables or disables notification on a give characteristic.
     *
     * @param characteristic Characteristic to act on.
     * @param enabled If true, enable notification.  False otherwise.
     */
    public void setCharacteristicNotification(BluetoothGattCharacteristic characteristic,
                                              boolean enabled) {
        Log.d("step1","setCharacteristicNotification Start");
        if (mBluetoothAdapter == null || mBluetoothGatt == null) {
            Log.w(TAG, "BluetoothAdapter not initialized");
            return;
        }
        mBluetoothGatt.setCharacteristicNotification(characteristic, enabled);

        // This is specific to Heart Rate Measurement.
        if (UUID_RSSI_VALUE.equals(characteristic.getUuid())) {
            BluetoothGattDescriptor descriptor = characteristic.getDescriptor(UUID.fromString("00002902-0000-1000-8000-00805f9b34fb"));
            descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
            mBluetoothGatt.writeDescriptor(descriptor);
        }
        Log.d("step1","setCharacteristicNotification finish");
    }

    public void writeRemoteCharacteristic(BluetoothGattCharacteristic characteristic, char ch){

        Log.d("step1","write start");
        if(mBluetoothAdapter == null || mBluetoothGatt==null){
            Log.w(TAG,"BluetoothAdapter not initialized");
            return;
        }

        if(characteristic.getUuid().toString().equals("0000ffe1-0000-1000-8000-00805f9b34fb")){
            byte[]data = new byte[1];

            if(ch=='w') data[0] = (byte)0x77;
            else if(ch=='x') data[0] = (byte)0x78;
            else if(ch=='y') data[0] = (byte)0x79;
            else if(ch=='z') data[0] = (byte)0x7A;
            //      else if(ch=='v') data[0] = (byte)0x76;

            characteristic.setValue(data);
            mBluetoothGatt.writeCharacteristic(characteristic);
            //Log.d("step","Write beacon :" + ch + "!!");
        }
        mBluetoothGatt.writeCharacteristic(characteristic);
        Log.d("step1","write finish");
        //mMainActivity.sequence = ch;

    }
    //수정요망
    public void writeButtonCharacteristic(BluetoothGattCharacteristic characteristic){

        if(mBluetoothAdapter == null || mBluetoothGatt==null){
            Log.w(TAG,"BluetoothAdapter not initialized");
            return;
        }

        if(characteristic.getUuid().toString().equals("0000ffe1-0000-1000-8000-00805f9b34fb")){
            byte[]data = new byte[1];

            if(sequence==0) data[0] = (byte)0x77;
            else if(sequence==1) data[0] = (byte)0x78;
            else if(sequence==2) data[0] = (byte)0x79;
            else if(sequence==3) data[0] = (byte)0x7A;
            //else if(sequence==4) data[0] = (byte)0x76;

            characteristic.setValue(data);
            mBluetoothGatt.writeCharacteristic(characteristic);
        }
        mBluetoothGatt.writeCharacteristic(characteristic);
        sequence++;
        if(sequence == 4) sequence=0;
    }

    /**
     * Retrieves a list of supported GATT services on the connected device. This should be
     * invoked only after {@code BluetoothGatt#discoverServices()} completes successfully.
     *
     * @return A {@code List} of supported services.
     */
    public List<BluetoothGattService> getSupportedGattServices() {
        if (mBluetoothGatt == null) return null;

        return mBluetoothGatt.getServices();
    }
}