Android电话录音


Android电话录音
本例是一个通用的电话录音方案，先创建一个广播接收，

package zhangphil.phonerecorder;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class PhoneBroadcastReceiver extends BroadcastReceiver {// BroadcastReceiver

@Override
public void onReceive(Context context, Intent intent) {
// 外拨电话
if (intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)) {
System.out.println(Intent.ACTION_NEW_OUTGOING_CALL);

// 获得外拨号码
String EXTRA_PHONE_NUMBER = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
Log.d(this.getClass().getName(), EXTRA_PHONE_NUMBER);

// 开始启动后台服务录音
Intent service = new Intent(context, PhoneService.class);
context.startService(service);
}
}
}


注册到AndroidManifest.xml里面，然后开机启动（通过设置广播过滤器）：

<action android:name="android.intent.action.BOOT_COMPLETED" />

同时增加外拨电话的广播过滤器：

<action android:name="android.intent.action.NEW_OUTGOING_CALL" />

只要有外拨电话就启动后台服务，然后录制通话录音。录音文件存放在SD卡的根目录下。全程将使用PhoneStateListener监听电话通话状态，通话开始然后就开启MediaRecorder录音，通话结束，然后就使MediaRecorder停止录音。

package zhangphil.phonerecorder;

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;

public class PhoneService extends Service {

private File file;

// 录音的格式
private String fileName = "zhangphil.3gp";

@Override
public IBinder onBind(Intent intent) {
return null;
}

@Override
public void onCreate() {
super.onCreate();

String path = Environment.getExternalStorageDirectory().getAbsolutePath();
file = new File(path, fileName);

TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
telephonyManager.listen(new MyPhoneListener(), PhoneStateListener.LISTEN_CALL_STATE);
}

private class MyPhoneListener extends PhoneStateListener {
private MediaRecorder mediaRecorder;

// 震动
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
startRecordPhoneSound();
break;

// 没有通话（通话结束）
case TelephonyManager.CALL_STATE_IDLE:
if (mediaRecorder != null) {
mediaRecorder.stop();
mediaRecorder.release();
mediaRecorder = null;

// 震动
vibrator.vibrate(100);
}

break;
}

} catch (Exception e) {
e.printStackTrace();
}
}

private void startRecordPhoneSound() {
mediaRecorder = new MediaRecorder();

// 这里选麦克风作为录音的声源
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);

mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

// 录音文件的存放位置
mediaRecorder.setOutputFile(file.getAbsolutePath());

try {
mediaRecorder.prepare();
} catch (Exception e) {
e.printStackTrace();
}

mediaRecorder.start();

// 震动
vibrator.vibrate(100);
}
}
}

需要注意的是，这个电话录音，是通过麦克风录制通话录音的，录制的效果一般。

AndroidManifest.xml文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="zhangphil.phonerecorder"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="23" />

<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >

<service android:name=".PhoneService" >
</service>

<receiver android:name=".PhoneBroadcastReceiver" >
<intent-filter>
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>

</application>

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

<!-- 拨打电话权限 -->
<uses-permission android:name="android.permission.CALL_PHONE" />
<!-- 读取电话状态权限 -->
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<!-- SD卡读写权限 -->
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!-- 录音权限 -->
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<!-- 震动权限 -->
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" />

</manifest>