016_01Service的应用--拨打电话自动录音

package com.example.day16_03phonerecorder;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        Intent intent = new Intent(this, MyPhoneRecordService.class);
        startService(intent);    
    }     
}

package com.example.day16_03phonerecorder;

import java.io.IOException;

import android.app.Service;
import android.content.Intent;
import android.media.MediaRecorder;
import android.media.MediaRecorder.AudioEncoder;
import android.media.MediaRecorder.AudioSource;
import android.media.MediaRecorder.OutputFormat;
import android.os.IBinder;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;

public class MyPhoneRecordService extends Service {

    MediaRecorder mMediaRecorder;
    boolean recordflag =false;
    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onCreate() {
        // TODO Auto-generated method stub
        super.onCreate();
        System.out.println("MyPhoneRecordService.onCreate()");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // TODO Auto-generated method stub
        System.out.println("MyPhoneRecordService.onStartCommand()");

        //服务里要监听电话的状态
        //  1，如果发现电话接通--》就是开始录音
        //  2.如果发现电话挂断 --》就停止录音        
        TelephonyManager telephonyManager = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
        telephonyManager.listen(new MyphoneStateListener(), PhoneStateListener.LISTEN_CALL_STATE);        
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        System.out.println("MyPhoneRecordService.onDestroy()");
    }
    
    class MyphoneStateListener extends PhoneStateListener{
       /*    
       *//** Device call state: No activity. *//*
        public static final int CALL_STATE_IDLE = 0;
        *//** Device call state: Ringing. A new call arrived and is
         *  ringing or waiting. In the latter case, another call is
         *  already active. *//*
        public static final int CALL_STATE_RINGING = 1;
        *//** Device call state: Off-hook. At least one call exists
          * that is dialing, active, or on hold, and no calls are ringing
          * or waiting. *//*
        public static final int CALL_STATE_OFFHOOK = 2;*/
        
        
        @Override
        public void onCallStateChanged(int state, String incomingNumber) {
            // TODO Auto-generated method stub
            super.onCallStateChanged(state, incomingNumber);            
            switch (state) {
            case 0:            
                if (recordflag) {
                    //停止录音
                    // 8. 停止录音 
                    mMediaRecorder.stop(); 
                    // 9. 释放资源 
                    mMediaRecorder.release();
                    recordflag=false;
                }    
                System.out
                        .println("MyPhoneRecordService.MyphoneStateListener.onCallStateChanged()电话挂断");
                break;
            case 1:
                System.out
                        .println("MyPhoneRecordService.MyphoneStateListener.onCallStateChanged()正在响铃");
                
                break;
            case 2:
                //开始录音
            // 1. 创建一个MediaRecorder对象 
                  mMediaRecorder = new MediaRecorder(); 
            // 2. 设置音频源
                 mMediaRecorder.setAudioSource(AudioSource.MIC); 
            // 3. 设置输出格式
                 mMediaRecorder.setOutputFormat(OutputFormat.THREE_GPP);                  
            // 4. 设置输出文件的名字
                 mMediaRecorder.setOutputFile(getFilesDir()+"/record.3pg"); 
            // 5. 设置音频编码
                 mMediaRecorder.setAudioEncoder(AudioEncoder.DEFAULT); 
            // 6. 准备以下, 马上开始录音
                 try {
                    mMediaRecorder.prepare();
                } catch (IllegalStateException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } 
            // 7. 开始录音 
                 mMediaRecorder.start(); // 录音开始了...         
                 recordflag=true;
                 
                 System.out
                        .println("MyPhoneRecordService.MyphoneStateListener.onCallStateChanged()正在通话");
                
                break;

            default:
                break;
            }
        }    
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.day16_03phonerecorder"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="19" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <uses-permission android:name="android.permission.RECORD_AUDIO"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service  android:name=".MyPhoneRecordService"></service>
    </application>

</manifest>

录音文件保存在/data/data/com.example.day16_03phonerecorder 下