import java.io.IOException;import android.app.Service;import android.content.Context;import android.content.Intent;import android.media.MediaRecorder;import android.os.IBinder;import android.telephony.PhoneStateListener;import android.telephony.TelephonyManager;import android.util.Log;public class RecordService extends Service{@Overridepublic IBinder onBind(Intent intent) {// TODO Auto-generated method stubreturn null;}@Overridepublic void onCreate() {super.onCreate();//创建一个电话管理器对象TelephonyManager manager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);/创建电话状态的一个监听器MyPhoneStateListener listener = new MyPhoneStateListener();//调用电话管理器的listen方法注册监听//参数：1.监听器，2.要监听打电话的状态manager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);}private class MyPhoneStateListener extends PhoneStateListener{private MediaRecorder recorder;@Overridepublic void onCallStateChanged(int state, String incomingNumber) {switch (state) {case TelephonyManager.CALL_STATE_IDLE:Log.e("TAG", "空闲状态"+"录音结束");(recorder != null) {try {recorder.stop();//停止录音} catch (Exception e) {e.printStackTrace();finally{recorder.reset();   //重置recorder.release(); //释放}}break;case TelephonyManager.CALL_STATE_RINGING:Log.e("TAG","响铃"+incomingNumber+",准备一个录音机");recorder = new MediaRecorder();//设置音频的输入源  MIC只能录自己的声音 ；VOICE_CALL可以录双方的声音recorder.setAudioSource(MediaRecorder.AudioSource.MIC);//设置音频输出的格式.3gp(体积小 ，效果差 ，压缩狠)recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);//设置音频的编码，AMR是早期彩屏彩铃手机上使用的音频格式，一般用做手机铃声//NB(窄带)   WB(宽带)recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);//设置输入之后文件保存的路径recorder.setOutputFile(getCacheDir()+"/"+incomingNumber+".3gp");//录音机开始准备{recorder.prepare();} catch (IllegalStateException e) {/ TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}break;case TelephonyManager.CALL_STATE_OFFHOOK:Log.e("TAG","接电话了"+incomingNumber + ",开始录音");recorder.start();   // 开始录音default:break;}super.onCallStateChanged(state, incomingNumber);}}}