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>

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