android 电话状态的监听(来电和去电） PhoneStateListener和TelephonyManager

今天的程序可以实现电话状态改变时启动（来电、接听、挂断、拨打电话），但是暂时没法实现拨打电话时判断对方是否接听、转语音信箱等。Android在电话状态改变是会发送action为android.intent.action.PHONE_STATE的广播，而拨打电话时会发送action为android.intent.action.NEW_OUTGOING_CALL的广播，但是我看了下开发文档,暂时没发现有来电时的广播。知道这个就好办了，我们写个BroadcastReceiver用于接收这两个广播就可以了。

package com.pocketdigi.phonelistener;

import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;

public class PhoneReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
System.out.println("action"+intent.getAction());
if(intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)){
//如果是去电（拨出）
System.out.println("拨出");
}else{
//查了下android文档，貌似没有专门用于接收来电的action,所以，非去电即来电
System.out.println("来电");
TelephonyManager tm = (TelephonyManager)context.getSystemService(Service.TELEPHONY_SERVICE);
tm.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
//设置一个监听器
}
}
PhoneStateListener listener=new PhoneStateListener(){

@Override
public void onCallStateChanged(int state, String incomingNumber) {
// TODO Auto-generated method stub
//state 当前状态 incomingNumber,貌似没有去电的API
super.onCallStateChanged(state, incomingNumber);
switch(state){
case TelephonyManager.CALL_STATE_IDLE:
System.out.println("挂断");
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
System.out.println("接听");
break;
case TelephonyManager.CALL_STATE_RINGING:
System.out.println("响铃:来电号码"+incomingNumber);
//输出来电号码
break;
}
}

};
}

要在AndroidManifest.xml注册广播接收器:

<receiver android:name=".PhoneReceiver">
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE"/>
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
</receiver>

还要添加权限:

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

转自 ：http://www.pocketdigi.com/20110725/417.html