android/android_api/base/src/main/java/org/iotivity/ca/CaBtPairingInterface.java

   1 /******************************************************************
   2  *
   3  * Copyright 2016 Samsung Electronics All Rights Reserved.
   4  *
   5  *
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  ******************************************************************/
  20
  21 package org.iotivity.ca;
  22
  23 import android.bluetooth.BluetoothAdapter;
  24 import android.bluetooth.BluetoothDevice;
  25 import android.content.BroadcastReceiver;
  26 import android.content.Context;
  27 import android.content.Intent;
  28 import android.content.IntentFilter;
  29
  30 public class CaBtPairingInterface {
  31     private static Context mContext;
  32     private static volatile boolean isBtInitialized = false;
  33
  34     private CaBtPairingInterface(Context context) {
  35         synchronized(CaBtPairingInterface.class) {
  36             mContext = context;
  37         }
  38         if (!isBtInitialized) {
  39             registerIntentFilter();
  40             isBtInitialized = true;
  41         }
  42     }
  43
  44     private static IntentFilter registerIntentFilter() {
  45         IntentFilter filter = new IntentFilter();
  46         filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
  47         filter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
  48         filter.addAction(BluetoothDevice.ACTION_FOUND);
  49         mContext.registerReceiver(mReceiver, filter);
  50         return filter;
  51     }
  52
  53     public static void destroyEdrInterface() {
  54         if (isBtInitialized) {
  55             mContext.unregisterReceiver(mReceiver);
  56             isBtInitialized = false;
  57         }
  58     }
  59
  60     private native static void oicEdrStateChangedCallback(int state);
  61
  62     private native static void oicEdrBondStateChangedCallback(String addr);
  63
  64     private native static void oicEdrFoundDeviceCallback(BluetoothDevice device);
  65
  66     private static final BroadcastReceiver mReceiver = new BroadcastReceiver() {
  67
  68         @Override
  69         public void onReceive(Context context, Intent intent) {
  70
  71             String action = intent.getAction();
  72
  73             if (action != null && action.equals(BluetoothDevice.ACTION_FOUND)) {
  74                 BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
  75
  76                 // if found device is not paired with this device
  77                 if (device.getBondState() != BluetoothDevice.BOND_BONDED)
  78                 {
  79                     oicEdrFoundDeviceCallback(device);
  80                 }
  81             }
  82
  83             if (action != null && action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
  84
  85                 int state =
  86                         intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
  87
  88                 // STATE_ON:12, STATE_OFF:10
  89                 if (state == BluetoothAdapter.STATE_ON || state == BluetoothAdapter.STATE_OFF)
  90                 {
  91                     oicEdrStateChangedCallback(state);
  92                 }
  93             }
  94
  95             if (action != null && action.equals(BluetoothDevice.ACTION_BOND_STATE_CHANGED)) {
  96
  97                 int bondState = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE,
  98                                                    BluetoothDevice.ERROR);
  99
 100                 // unpairing event
 101                 if (bondState == BluetoothDevice.BOND_NONE) {
 102                     if ((intent.getIntExtra(BluetoothDevice.EXTRA_PREVIOUS_BOND_STATE,
 103                                             BluetoothDevice.ERROR)
 104                                                 == BluetoothDevice.BOND_BONDED)) {
 105                         BluetoothDevice device
 106                             = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
 107
 108                         oicEdrBondStateChangedCallback(device.getAddress());
 109                     }
 110                 }
 111             }
 112         }
 113     };
 114 }