Android Open Source - wiki-contacts-android Call State Listener

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License

The source code is released under:
Apache License
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Java Source Code

package com.kahkong.wikicontacts.subcontroller;
/*from  w  ww. j a  v  a 2s .  c o m*/
import com.kahkong.wikicontacts.callback.OnCompleteListener;
import com.kahkong.wikicontacts.modal.Contact;
import com.kahkong.wikicontacts.service.ContactService;
import com.kahkong.wikicontacts.service.ContactServiceImpl;
import com.kahkong.wikicontacts.service.PhoneBookService;
import com.kahkong.wikicontacts.service.PhoneBookServiceImpl;
import com.kahkong.wikicontacts.service.WebService;
import com.kahkong.wikicontacts.service.WebServiceImpl;

import android.content.Context;
import android.graphics.PixelFormat;
import android.os.Handler;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;

/**
 * 
 * @author Poh Kah Kong
 *
 */
public class CallStateListener extends PhoneStateListener {
  private Context context;
  private PhoneBookService phoneBookService = PhoneBookServiceImpl.getInstance();
  private ContactService contactService = ContactServiceImpl.getInstance();
  private WebService webService = WebServiceImpl.getInstance();
  private TelephonyManager telephonyManager;
  private WindowManager windowManager;
  private LayoutParams windowManagerParams;
  private IncomingContactLayout incomingContactLayout;

  public CallStateListener(Context context) {
    this.context = context;
    telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);  
    windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    windowManagerParams = new WindowManager.LayoutParams(
        LayoutParams.MATCH_PARENT,
        LayoutParams.MATCH_PARENT, 
        WindowManager.LayoutParams.TYPE_SYSTEM_ALERT |
        WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
        WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL|
        WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
        PixelFormat.TRANSLUCENT);
  }

  public void register() {
    if (telephonyManager==null) {
      return;
    }
    telephonyManager.listen(this, PhoneStateListener.LISTEN_CALL_STATE);
  }

  public void unregister() {
    if (telephonyManager==null) {
      return;
    }
    telephonyManager.listen(this, PhoneStateListener.LISTEN_NONE);
  }

  @Override
  public void onCallStateChanged(int state, final String number) {
    super.onCallStateChanged(state, number);
    switch (state) {
    case TelephonyManager.CALL_STATE_RINGING:
      final Handler handler = new Handler();
          handler.postDelayed(new Runnable() {
              @Override
              public void run() {                              
                addContactView(number);
              }
          }, 1000);              
      break;
    case TelephonyManager.CALL_STATE_IDLE:
    case TelephonyManager.CALL_STATE_OFFHOOK:
      cancel();
      break;
    }        
  }

  private void addContactView(final String number) {
    if (phoneBookService.isContactExists(number)) { // contact in phonebook
      return;
    }    
    incomingContactLayout = new IncomingContactLayout(context);    
    windowManager.addView(incomingContactLayout, windowManagerParams);    
    incomingContactLayout.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View view) {            
        cancel();            
      }          
    });
    
    contactService.getContact(number, new OnCompleteListener() {
      @Override
      public void onComplete(Object[] objects) {
        Contact contact = (Contact) objects[0];
        if (contact==null) { // contact not in database
          cancel();
          return;
        }          
        incomingContactLayout.setContact(contact, number);            
      }      
    });
  }

  private void cancel() {
    webService.svcCancel();
    if (incomingContactLayout==null) {
      return;
    }
    windowManager.removeView(incomingContactLayout);
    incomingContactLayout = null;
  }
}
Java Source Code List
