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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_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
}
}
PhoneStateListener的onCallStateChanged方法监听来电状态
@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; }
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
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原文地址:http://www.cnblogs.com/popfisher/p/5650969.html