Android Open Source - SmartNotify Call State Tracker

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License

The source code is released under:

Copyright (c) 2014, Sergey Parshin All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: ...

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Java Source Code

/*
 * Copyright (c) 2014, Sergey Parshin, quarck@gmail.com
 * All rights reserved./*from  w w  w  . j a  va 2s . c o  m*/
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of developer (Sergey Parshin) nor the
 *       names of other project contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.github.quarck.smartnotify;

import android.content.Context;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;

public class CallStateTracker extends PhoneStateListener
{
  private static final String TAG = "CallStateTracker";
  
  private static CallStateTracker instance = null;

  private GlobalState global = null;
  
  @Override
  public void onCallStateChanged(int state, String incomingNumber)
  {
    boolean isOnCall = false;
    
    Lw.d(TAG, "onCallStateChanged, new state: " + state );
    
    switch (state)
    {
    case TelephonyManager.CALL_STATE_RINGING:
      isOnCall = true;
      Lw.d(TAG, "CALL_STATE_RINGING");
      break;
    case TelephonyManager.CALL_STATE_OFFHOOK:
      isOnCall = true;
      Lw.d(TAG, "CALL_STATE_OFFHOOK");
      break;
      
    case TelephonyManager.CALL_STATE_IDLE:
      isOnCall = false;
      Lw.d(TAG, "CALL_STATE_IDLE");
      break;
    }

    if (incomingNumber != null)
      Lw.d(TAG, "incomingNumber = " + incomingNumber);

    if (global != null)
      global.setIsOnCall(isOnCall);
    else
      Lw.e(TAG, "Can't access global state");

  }
  
  private void register(Context ctx)
  {
    Lw.d(TAG, "Registering listener");
    
    TelephonyManager tm = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE);
    tm.listen(this, PhoneStateListener.LISTEN_CALL_STATE);
    
    global = GlobalState.instance(ctx);
  }

  @SuppressWarnings("unused")
  private void unregister(Context ctx)
  {
    Lw.d(TAG, "Unregistering listener");
    
    TelephonyManager tm = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE);
    tm.listen(this, PhoneStateListener.LISTEN_NONE);
  }
  
  public static void start(Context ctx)
  {
    Lw.d(TAG, "start()");
    synchronized(CallStateTracker.class)
    {
      if (instance == null)
        instance = new CallStateTracker();
      
      instance.register(ctx);      
    }
  }
}

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