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[操作系统]Android来电监听和去电监听


我觉得写文章就得写得有用一些的,必须要有自己的思想,关于来电去电监听将按照下面三个问题展开

1、监听来电去电有什么用?

2、怎么监听,来电去电监听方式一样吗?

3、实战,有什么需要特别注意地方?

 

监听来电去电能干什么

1、能够对监听到的电话做个标识,告诉用户这个电话是诈骗、推销、广告什么的

2、能够针对那些特殊的电话进行自动挂断,避免打扰到用户

 

来电去电的监听方式(不一样的方式)

1、来电监听(PhoneStateListener)

  来电监听是使用PhoneStateListener类,使用方式是,将PhoneStateListener对象(一般是自己继承PhoneStateListener类完成一些封装)注册到系统电话管理服务中去(TelephonyManager

然后通过PhoneStateListener的回调方法onCallStateChanged(int state, String incomingNumber) 实现来电的监听 (详细实现可以参考后面给出的拓展阅读部分)

  注册监听

// phoneServiceName是服务名,一般是 "phone" --> Context.TELEPHONY_SERVICETelephonyManager telephonyManager = (TelephonyManager) mContext.getSystemService(phoneServiceName);if(telephonyManager != null) {  try {    // 注册来电监听    telephonyManager.listen(mTelephonyListener, PhoneStateListener.LISTEN_CALL_STATE);  } catch(Exception e) {    // 异常捕捉  }}

  PhoneStateListener的onCallStateChanged方法监听来电状态

@Overridepublic void onCallStateChanged(int state, String incomingNumber) {  switch (state) {    case TelephonyManager.CALL_STATE_IDLE:      // 电话挂断      break;    case TelephonyManager.CALL_STATE_OFFHOOK:      // 来电响铃      break;    case TelephonyManager.CALL_STATE_RINGING:      // 来电接通      break;    default:      break;  }  mCallState = state;}

  三种状态源码解释

/** Device call state: No activity. */public static final int CALL_STATE_IDLE = 0;  // 电话挂断/** Device call state: Ringing. A new call arrived and is * ringing or waiting. In the latter case, another call is * already active. */public static final int CALL_STATE_RINGING = 1;  // 来电响铃/** Device call state: Off-hook. At least one call exists * that is dialing, active, or on hold, and no calls are ringing * or waiting. */public static final int CALL_STATE_OFFHOOK = 2;  // 来电接通

 

2、去电监听(通过广播来实现)

// OutgoingCallListener继承一个BroadcastReceiver<receiver android:name="com.test.OutgoingCallListener" >  <intent-filter>    <action android:name="android.intent.action.PHONE_STATE"/>    <action android:name="android.intent.action.NEW_OUTGOING_CALL" />  </intent-filter></receiver>

 

实战,有什么需要特别注意地方

1、双卡双待的手机怎么获取

  对于双卡手机,每张卡都对应一个Service和一个FirewallPhoneStateListener,需要给每个服务注册自己的FirewallPhoneStateListener,服务的名称还会有点变化,厂商可能会修改

public ArrayList<String> getMultSimCardInfo() {  // 获取双卡的信息,这个也是经验尝试出来的,不知道其他厂商有什么坑  ArrayList<String> phoneServerList = new ArrayList<String>();  for(int i = 1; i < 3; i++) {    try {      String phoneServiceName;      if (MiuiUtils.isMiuiV6()) {        phoneServiceName = "phone." + String.valueOf(i-1);      } else {        phoneServiceName = "phone" + String.valueOf(i);      }      // 尝试获取服务看是否能获取到      IBinder iBinder = ServiceManager.getService(phoneServiceName);      if(iBinder == null) continue;      ITelephony iTelephony = ITelephony.Stub.asInterface(iBinder);      if(iTelephony == null) continue;      phoneServerList.add(phoneServiceName);    } catch(Exception e) {      e.printStackTrace();    }  }  // 这个是默认的  phoneServerList.add(Context.TELEPHONY_SERVICE);  return phoneServerList;}

2、挂断电话

  挂断电话使用系统服务提供的接口去挂断,但是挂断电话是个并不能保证成功的方法,所以会有多种方式挂断同时使用,下面提供

public boolean endCall() {  boolean callSuccess = false;  ITelephony telephonyService = getTelephonyService();  try {    if (telephonyService != null) {      callSuccess = telephonyService.endCall();    }  } catch (RemoteException e) {    e.printStackTrace();  } catch (Exception e){    e.printStackTrace();  }  if (callSuccess == false) {    Executor eS = Executors.newSingleThreadExecutor();    eS.execute(new Runnable() {      @Override      public void run() {        disconnectCall();      }    });    callSuccess = true;  }  return callSuccess;}private boolean disconnectCall() {    Runtime runtime = Runtime.getRuntime();  try {    runtime.exec("service call phone 5 \n");  } catch (Exception exc) {    exc.printStackTrace();    return false;  }  return true;}// 使用endCall挂断不了,再使用killCall反射调用再挂一次public static boolean killCall(Context context) {  try {    // Get the boring old TelephonyManager    TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);    // Get the getITelephony() method    Class classTelephony = Class.forName(telephonyManager.getClass().getName());    Method methodGetITelephony = classTelephony.getDeclaredMethod("getITelephony");    // Ignore that the method is supposed to be private    methodGetITelephony.setAccessible(true);    // Invoke getITelephony() to get the ITelephony interface    Object telephonyInterface = methodGetITelephony.invoke(telephonyManager);    // Get the endCall method from ITelephony    Class telephonyInterfaceClass = Class.forName(telephonyInterface.getClass().getName());    Method methodEndCall = telephonyInterfaceClass.getDeclaredMethod("endCall");    // Invoke endCall()    methodEndCall.invoke(telephonyInterface);  } catch (Exception ex) { // Many things can go wrong with reflection calls    return false;  }  return true;}

 

3、挂断电话需要权限

<uses-permission android:name="android.permission.CALL_PHONE" />

 

拓展阅读:

这篇文章重点从整体框架机制方面来介绍电话监听

http://www.cnblogs.com/bastard/archive/2012/11/23/2784559.html

这篇文章重点介绍一些api方法已经变量的含义

http://blog.csdn.net/skiffloveblue/article/details/7491618