Android来电监听和去电监听

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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

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// phoneServiceName是服务名,一般是 “phone” –> Context.TELEPHONY_SERVICE
TelephonyManager 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
}
}
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  PhoneStateListener的onCallStateChanged方法监听来电状态

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@Override
public 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;
}
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  三种状态源码解释

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/* 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
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2、去电监听(通过广播来实现)

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// OutgoingCallListener继承一个BroadcastReceiver






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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

复制代码
public ArrayList 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 phoneServerList = new ArrayList();
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;

}
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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

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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;

}
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3、挂断电话需要权限

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

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