这期内容当中小编将会给大家带来有关Android应用中怎么实现一个通话录音功能,文章内容丰富且以专业的角度为大家分析和叙述,阅读完这篇文章希望大家可以有所收获。

服务代码:
package com.eboy.phoneListener;
import java.io.File;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.media.MediaRecorder;
import android.os.Environment;
import android.os.IBinder;
import android.os.Vibrator;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.widget.Toast;
public class phoneService extends Service {
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
telephonyManager.listen(new PhoneListener(), PhoneStateListener.LISTEN_CALL_STATE);
}
private final class PhoneListener extends PhoneStateListener{
private MediaRecorder mediaRecorder;
private File file;
private Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
@Override
public void onCallStateChanged(int state, String incomingNumber) {
try {
switch (state){
case TelephonyManager.CALL_STATE_RINGING: //来电
break;
case TelephonyManager.CALL_STATE_OFFHOOK: //接通电话
file = new File(Environment.getExternalStorageDirectory(), incomingNumber + System.currentTimeMillis() + ".3gp");
mediaRecorder = new MediaRecorder();
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mediaRecorder.setOutputFile(file.getAbsolutePath());
mediaRecorder.prepare();
mediaRecorder.start();
Toast.makeText(getApplicationContext(), "电话已接通,开始录音。", Toast.LENGTH_SHORT).show();
//震动一下
vibrator.vibrate(100);
break;
case TelephonyManager.CALL_STATE_IDLE: //挂断电话
if (mediaRecorder != null){
mediaRecorder.stop();
mediaRecorder.release();
mediaRecorder = null;
Toast.makeText(getApplicationContext(), "电话已挂断,录音停止。", Toast.LENGTH_SHORT).show();
//震动一下
vibrator.vibrate(100);
}
break;
}
}catch (Exception e) {
e.printStackTrace();
}
}
}
}