android 通话录音实现

因受系统限制，只能录自已麦的声音，录不到对方的声音，可能需要改内核才能实现双向录音；

接通电话和挂断电话时，震动一下；

使用广播接收者实现自启动； 

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();
            }
        }        
    }
}

通过广播接收者实现自启动，代码：

package com.eboy.phoneListener;

import android.content.Context;
import android.content.Intent;

public class BroadcastReceiver extends android.content.BroadcastReceiver {

    @Override
    public void onReceive(Context arg0, Intent arg1) {
        Intent service = new Intent(arg0, phoneService.class);
        arg0.startService(service);
    }
}

main.xml：

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.eboy.phoneListener"
    android:versionCode="1"
    android:versionName="1.0">

    <uses-sdk android:minSdkVersion="7" android:targetSdkVersion="15" />

    <application android:label="@string/app_name"
        android:icon="@drawable/ic_launcher"
        android:theme="@style/AppTheme">
        
        <service android:name=".phoneService"></service>
        <receiver android:name=".BroadcastReceiver">
            <intent-filter >
                
                <action android:name="android.intent.action.BOOT_COMPLETED"/>
            </intent-filter>
        </receiver>

    </application>
    
    <!-- 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"/>

</manifest>