Android 实现电话来去自动录音的功能

我们在使用android手机打电话时，有时可能会需要对来去电通话自动录音，本文就详细讲解实现android来去电通话自动录音的方法，大家按照文中的方法编写程序就可以完成此功能。

       来去电自动录音的关键在于如何监听手机电话状态的转变：

       1）来电的状态的转换如下（红色标记是我们要用到的状态）

       空闲（idel）——> 响铃（ringing）——> 接听（active）——> 挂断（经历disconnecting——disconnected）——> 空闲（idel）

       或者  空闲（idel）——> 响铃（ringing）——> 拒接 ——> 空闲（idel）

       2）去电状态的转换如下

       空闲（idel）——> 拨号 （dialing）——> （对方）响铃（alerting） ——> 建立连接（active）—— 挂断（经历disconnecting——disconnected）——> 空闲（idel）

       或者 空闲（idel）——> 拨号 （dialing）——> （对方）响铃（alerting）——> 挂断/对方拒接 ——> 空闲（idel）

       下面就分别就来电和去电这两种状态分析并实现。

       1、先进行来电的分析和实现。

       相对去电来说，来电状态的转换检测要简单些。android api 中的phonestatelistener 类提供了相应的方法，但我们需要覆盖其中的 oncallstatechanged(int state, string incomingnumber) 方法即可实现来电状态的检测，并在此基础上添加录音功能即可。其中 state 参数就是各种电话状态，到时我们将它跟下面我们要用到的状态进行比较，若是电话处在我们想要的状态上，则进行一系列操作，否则就不管他。想要获取这些状态，还需要另一个电话相关类，那就是 telephonymanager， 该类 提供了一些电话状态，其中我们要用到的是：telephonymanager.call_state_idle（空闲）、telephonymanager.call_state_offhook（摘机）和 telephonymanager.call_state_ringing（来电响铃）这三个状态。判别这三种状态，可以继承 android.telephony.phonestatelistener 类，实现上面提到的 oncallstatechanged(int state, string incomingnumber) 方法，请看如下代码：

public class tellistener extends phonestatelistener {  
  
 @override  
 public void oncallstatechanged(int state, string incomingnumber) {  
  super.oncallstatechanged(state, incomingnumber);  
  
  switch (state) {  
  case telephonymanager.call_state_idle: // 空闲状态，即无来电也无去电  
   log.i("telephonestate", "idle");  
   //此处添加一系列功能代码 
   break;  
  case telephonymanager.call_state_ringing: // 来电响铃  
   log.i("telephonestate", "ringing");  
   //此处添加一系列功能代码 
   break;  
  case telephonymanager.call_state_offhook: // 摘机，即接通 
   log.i("telephonestate", "offhook");  
   //此处添加一系列功能代码 
   break;  
  }  
  
  log.i("telephonestate", string.valueof(incomingnumber));  
 }  
  
} 

有了以上来电状态监听代码还不足以实现监听功能，还需要在我们的一个activity或者service中实现监听，方法很简单，代码如下：

/** 
* 在activity 或者 service中加入如下代码，以实现来电状态监听 
*/ 
telephonymanager telmgr = (telephonymanager)context.getsystemservice( 
    context.telephony_service); 
  telmgr.listen(new tellistener(), phonestatelistener.listen_call_state); 

这样就实现了来电状态监听功能，但要能够在设备中跑起来，这还不够，它还需要两个获取手机电话状态的权限：

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

这样的话就可以跑起来了。

       说到这，我想如果你可以实现录音功能的话，在此基础上实现来电自动录音就应该没什么问题了，不过请容我简单罗嗦几句。既然是来电，那么要想录音的话，那么应该就是在监听到 telephonymanager.call_state_offhook 的状态时开启录音机开始录音， 在监听到telephonymanager.call_state_idle 的状态时关闭录音机停止录音。这样，来电录音功能就完成了，不要忘记录音功能同样需要权限：

<uses-permission android:name="android.permission.record_audio"/>  
  
<!-- 要存储文件或者创建文件夹的话还需要以下两个权限 -->  
<uses-permission android:name="android.permission.mount_unmount_filesystems"/>  
<uses-permission android:name="android.permission.write_external_storage"/> 

2、介绍完了来电自动录音，下面就来介绍去电自动录音的实现方法。

       上面说过，相比来电状态的监听，去电的要麻烦些，甚至这种方法不是通用的，这个主要是因为android api 中没有提供去电状态监听的相应类和方法（也许我刚接触，没有找到）。刚开始网上搜索了一通也没有找到对应的解决方法，大多是 来电监听的，也就是上面的方法。不过中途发现一篇博文（后来就搜不到了），记得是查询系统日志的方式，从中找到去电过程中的各个状态的关键词。无奈之中，最终妥协了此方法。

       我的（联想a65上的）去电日志内容如下：

       过滤关键词为 mforeground

01-06 16:29:54.225: d/incallscreen(251): onphonestatechanged: mforegroundcall.getstate() : dialing 
01-06 16:29:54.245: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mforegroundcall.getstate() : dialing 
01-06 16:29:54.631: d/incallscreen(251): onphonestatechanged: mforegroundcall.getstate() : dialing 
01-06 16:29:54.645: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mforegroundcall.getstate() : dialing 
01-06 16:29:54.742: d/incallscreen(251): onphonestatechanged: mforegroundcall.getstate() : dialing 
01-06 16:29:54.766: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mforegroundcall.getstate() : dialing 
01-06 16:29:54.873: d/incallscreen(251): onphonestatechanged: mforegroundcall.getstate() : dialing 
01-06 16:29:54.877: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mforegroundcall.getstate() : dialing 
01-06 16:29:55.108: d/incallscreen(251): onphonestatechanged: mforegroundcall.getstate() : dialing 
01-06 16:29:55.125: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mforegroundcall.getstate() : dialing 
01-06 16:29:57.030: d/incallscreen(251): onphonestatechanged: mforegroundcall.getstate() : active 
01-06 16:29:57.155: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mforegroundcall.getstate() : active 
01-06 16:29:57.480: d/incallscreen(251): onphonestatechanged: mforegroundcall.getstate() : active 
01-06 16:29:57.598: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mforegroundcall.getstate() : active 
01-06 16:29:59.319: d/incallscreen(251): onphonestatechanged: mforegroundcall.getstate() : disconnecting 
01-06 16:29:59.373: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mforegroundcall.getstate() : disconnecting 
01-06 16:30:00.392: d/incallscreen(251): - ondisconnect: currentlyidle:true ; mforegroundcall.getstate():disconnected 
01-06 16:30:00.399: v/loginfo outgoing call(2492): d/incallscreen( 251): - ondisconnect: currentlyidle:true ; mforegroundcall.getstate():disconnected 
01-06 16:30:01.042: d/incallscreen(251): onphonestatechanged: mforegroundcall.getstate() : idle 
01-06 16:30:01.070: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mforegroundcall.getstate() : idle 
01-06 16:30:01.558: d/incallscreen(251): onphonestatechanged: mforegroundcall.getstate() : idle 
01-06 16:30:01.572: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mforegroundcall.getstate() : idle 

            过滤关键词  mbackground

01-06 16:29:54.226: d/incallscreen(251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:54.256: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:54.638: d/incallscreen(251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:54.652: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:54.743: d/incallscreen(251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:54.770: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:54.875: d/incallscreen(251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:54.882: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:55.109: d/incallscreen(251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:55.142: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:57.031: d/incallscreen(251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:57.160: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:57.481: d/incallscreen(251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:57.622: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:59.319: d/incallscreen(251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:29:59.373: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:30:01.042: d/incallscreen(251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:30:01.070: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:30:01.559: d/incallscreen(251): onphonestatechanged: mbackgroundcall.getstate() : idle 
01-06 16:30:01.573: v/loginfo outgoing call(2492): d/incallscreen( 251): onphonestatechanged: mbackgroundcall.getstate() : idle 

从上面的日志可以看到，每一行的末尾的大写英文词就是去电的状态，状态说明如下：

1.        dialing 拨号，对方还未响铃
2.        active   对方接通，通话建立
3.        disconnecting 通话断开时
4.        disconnected  通话已断开，可以认为是挂机了

       由于我拨打的是10010，没有响铃过程（电脑自动接通的够快），还少了一个状态，状态是alerting ，这个就是对方正在响铃的状态。

       有了这几个去电状态就好办了，现在我们要做的就是读取系统日志，然后找到这些状态，提取的关键词就是上面提到的 mforeground（前台通话状态） 和 mbackground （后台通话状态）（可能不一样的设备生成的不一样，根据自己具体设备设置，这里只提取前台的），如果读取的这一行日志中 包含 mforground ，再看看是否包含上面的状态的单词。既然说的如此，那么看看读取系统日志的代码吧。

package com.sdvdxl.phonerecorder; 
 
import java.io.bufferedreader; 
import java.io.ioexception; 
import java.io.inputstream; 
import java.io.inputstreamreader; 
 
import com.sdvdxl.outgoingcall.outgoingcallstate; 
 
import android.content.context; 
import android.content.intent; 
import android.util.log; 
 
/** 
 * 
 * @author sdvdxl 
 * 找到 日志中的 
 * onphonestatechanged: mforegroundcall.getstate() 这个是前台呼叫状态 
 * mbackgroundcall.getstate() 后台电话 
 * 若 是 dialing 则是正在拨号，等待建立连接，但对方还没有响铃， 
 * alerting 呼叫成功，即对方正在响铃， 
 * 若是 active 则已经接通 
 * 若是 disconnected 则本号码呼叫已经挂断 
 * 若是 idle 则是处于 空闲状态 
 *  
 */ 
public class readlog extends thread { 
 private context ctx; 
 private int logcount; 
  
 private static final string tag = "loginfo outgoing call"; 
  
 /** 
  * 前后台电话 
  * @author sdvdxl 
  *  
  */ 
 private static class callviewstate { 
  public static final string fore_ground_call_state = "mforeground"; 
 } 
  
 /** 
  * 呼叫状态 
  * @author sdvdxl 
  * 
  */ 
 private static class callstate { 
  public static final string dialing = "dialing"; 
  public static final string alerting = "alerting"; 
  public static final string active = "active"; 
  public static final string idle = "idle"; 
  public static final string disconnected = "disconnected"; 
 } 
  
 public readlog(context ctx) { 
  this.ctx = ctx; 
 } 
  
 /** 
  * 读取log流 
  * 取得呼出状态的log 
  * 从而得到转换状态 
  */ 
 @override 
 public void run() { 
  log.d(tag, "开始读取日志记录"); 
   
  string[] catchparams = {"logcat", "incallscreen *:s"}; 
  string[] clearparams = {"logcat", "-c"}; 
   
  try { 
   process process=runtime.getruntime().exec(catchparams); 
   inputstream is = process.getinputstream(); 
   bufferedreader reader = new bufferedreader(new inputstreamreader(is)); 
    
   string line = null; 
   while ((line=reader.readline())!=null) { 
    logcount++; 
    //输出所有 
   log.v(tag, line); 
     
    //日志超过512条就清理 
    if (logcount>512) { 
     //清理日志 
     runtime.getruntime().exec(clearparams) 
      .destroy();//销毁进程，释放资源 
     logcount = 0; 
     log.v(tag, "-----------清理日志---------------"); 
    }  
     
    /*---------------------------------前台呼叫-----------------------*/ 
    //空闲 
    if (line.contains(readlog.callviewstate.fore_ground_call_state) 
      && line.contains(readlog.callstate.idle)) { 
     log.d(tag, readlog.callstate.idle); 
    } 
     
    //正在拨号，等待建立连接，即已拨号，但对方还没有响铃， 
    if (line.contains(readlog.callviewstate.fore_ground_call_state) 
      && line.contains(readlog.callstate.dialing)) { 
     log.d(tag, readlog.callstate.dialing); 
    } 
     
    //呼叫对方 正在响铃 
    if (line.contains(readlog.callviewstate.fore_ground_call_state) 
      && line.contains(readlog.callstate.alerting)) { 
     log.d(tag, readlog.callstate.alerting); 
    } 
     
    //已接通，通话建立 
    if (line.contains(readlog.callviewstate.fore_ground_call_state) 
      && line.contains(readlog.callstate.active)) { 
     log.d(tag, readlog.callstate.active); 
    } 
     
    //断开连接，即挂机 
    if (line.contains(readlog.callviewstate.fore_ground_call_state) 
      && line.contains(readlog.callstate.disconnected)) { 
     log.d(tag, readlog.callstate.disconnected); 
    } 
     
   } //end while 
    
  } catch (ioexception e) { 
   e.printstacktrace(); 
  } //end try-catch 
 } //end run 
} //end class readlog 

以上代码中，之所以用线程，是为了防止读取日志过程中阻滞主方法的其他方法的执行，影响到程序捕捉对应的电话状态。

       好了，捕捉到了去电过程中各个状态的转变，那么，如何通知给程序呢，我采用的方法是捕获后立马给系统发送广播，然后程序进行广播接收，接收后再处理录音事件。要发送广播，就要发送一个唯一的广播，为此，建立如下类：

package com.sdvdxl.outgoingcall; 
 
import com.sdvdxl.phonerecorder.readlog; 
 
import android.content.context; 
import android.util.log; 
 
public class outgoingcallstate { 
 context ctx; 
 public outgoingcallstate(context ctx) { 
  this.ctx = ctx; 
 } 
  
 /** 
  * 前台呼叫状态 
  * @author sdvdxl 
  * 
  */ 
 public static final class foregroundcallstate { 
  public static final string dialing =  
    "com.sdvdxl.phonerecorder.fore_ground_dialing"; 
  public static final string alerting =  
    "com.sdvdxl.phonerecorder.fore_ground_alerting"; 
  public static final string active =  
    "com.sdvdxl.phonerecorder.fore_ground_active"; 
  public static final string idle =  
    "com.sdvdxl.phonerecorder.fore_ground_idle"; 
  public static final string disconnected =  
    "com.sdvdxl.phonerecorder.fore_ground_disconnected"; 
 } 
  
 /** 
  * 开始监听呼出状态的转变， 
  * 并在对应状态发送广播 
  */ 
 public void startlisten() { 
  new readlog(ctx).start(); 
  log.d("recorder", "开始监听呼出状态的转变，并在对应状态发送广播"); 
 } 
  
} 

 程序需要读取系统日志权限：

xml/html代码

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

       然后，在读取日志的类中检测到去电各个状态的地方发送一个广播，那么，读取日志的完整代码如下：

package com.sdvdxl.phonerecorder; 
 
import java.io.bufferedreader; 
import java.io.ioexception; 
import java.io.inputstream; 
import java.io.inputstreamreader; 
 
import com.sdvdxl.outgoingcall.outgoingcallstate; 
 
import android.content.context; 
import android.content.intent; 
import android.util.log; 
 
/** 
 * 
 * @author mrloong 
 * 找到 日志中的 
 * onphonestatechanged: mforegroundcall.getstate() 这个是前台呼叫状态 
 * mbackgroundcall.getstate() 后台电话 
 * 若 是 dialing 则是正在拨号，等待建立连接，但对方还没有响铃， 
 * alerting 呼叫成功，即对方正在响铃， 
 * 若是 active 则已经接通 
 * 若是 disconnected 则本号码呼叫已经挂断 
 * 若是 idle 则是处于 空闲状态 
 *  
 */ 
public class readlog extends thread { 
 private context ctx; 
 private int logcount; 
  
 private static final string tag = "loginfo outgoing call"; 
  
 /** 
  * 前后台电话 
  * @author sdvdxl 
  *  
  */ 
 private static class callviewstate { 
  public static final string fore_ground_call_state = "mforeground"; 
 } 
  
 /** 
  * 呼叫状态 
  * @author sdvdxl 
  * 
  */ 
 private static class callstate { 
  public static final string dialing = "dialing"; 
  public static final string alerting = "alerting"; 
  public static final string active = "active"; 
  public static final string idle = "idle"; 
  public static final string disconnected = "disconnected"; 
 } 
  
 public readlog(context ctx) { 
  this.ctx = ctx; 
 } 
  
 /** 
  * 读取log流 
  * 取得呼出状态的log 
  * 从而得到转换状态 
  */ 
 @override 
 public void run() { 
  log.d(tag, "开始读取日志记录"); 
   
  string[] catchparams = {"logcat", "incallscreen *:s"}; 
  string[] clearparams = {"logcat", "-c"}; 
   
  try { 
   process process=runtime.getruntime().exec(catchparams); 
   inputstream is = process.getinputstream(); 
   bufferedreader reader = new bufferedreader(new inputstreamreader(is)); 
    
   string line = null; 
   while ((line=reader.readline())!=null) { 
    logcount++; 
    //输出所有 
   log.v(tag, line); 
     
    //日志超过512条就清理 
    if (logcount>512) { 
     //清理日志 
     runtime.getruntime().exec(clearparams) 
      .destroy();//销毁进程，释放资源 
     logcount = 0; 
     log.v(tag, "-----------清理日志---------------"); 
    }  
     
    /*---------------------------------前台呼叫-----------------------*/ 
    //空闲 
    if (line.contains(readlog.callviewstate.fore_ground_call_state) 
      && line.contains(readlog.callstate.idle)) { 
     log.d(tag, readlog.callstate.idle); 
    } 
     
    //正在拨号，等待建立连接，即已拨号，但对方还没有响铃， 
    if (line.contains(readlog.callviewstate.fore_ground_call_state) 
      && line.contains(readlog.callstate.dialing)) { 
     //发送广播 
     intent dialingintent = new intent(); 
     dialingintent.setaction(outgoingcallstate.foregroundcallstate.dialing); 
     ctx.sendbroadcast(dialingintent); 
      
     log.d(tag, readlog.callstate.dialing); 
    } 
     
    //呼叫对方 正在响铃 
    if (line.contains(readlog.callviewstate.fore_ground_call_state) 
      && line.contains(readlog.callstate.alerting)) { 
     //发送广播 
     intent dialingintent = new intent(); 
     dialingintent.setaction(outgoingcallstate.foregroundcallstate.alerting); 
     ctx.sendbroadcast(dialingintent); 
      
     log.d(tag, readlog.callstate.alerting); 
    } 
     
    //已接通，通话建立 
    if (line.contains(readlog.callviewstate.fore_ground_call_state) 
      && line.contains(readlog.callstate.active)) { 
     //发送广播 
     intent dialingintent = new intent(); 
     dialingintent.setaction(outgoingcallstate.foregroundcallstate.active); 
     ctx.sendbroadcast(dialingintent); 
      
     log.d(tag, readlog.callstate.active); 
    } 
     
    //断开连接，即挂机 
    if (line.contains(readlog.callviewstate.fore_ground_call_state) 
      && line.contains(readlog.callstate.disconnected)) { 
     //发送广播 
     intent dialingintent = new intent(); 
     dialingintent.setaction(outgoingcallstate.foregroundcallstate.disconnected); 
     ctx.sendbroadcast(dialingintent); 
      
     log.d(tag, readlog.callstate.disconnected); 
    } 
     
   } //end while 
    
  } catch (ioexception e) { 
   e.printstacktrace(); 
  } //end try-catch 
 } //end run 
} //end class readlog 

发送了广播，那么就要有接收者，定义接收者如下（关于录音机的代码可以先忽略）：

package com.sdvdxl.phonerecorder; 
 
import android.content.broadcastreceiver; 
import android.content.context; 
import android.content.intent; 
import android.util.log; 
 
import com.sdvdxl.outgoingcall.outgoingcallstate; 
 
public class outgoingcallreciver extends broadcastreceiver { 
 static final string tag = "recorder"; 
 private myrecorder recorder; 
  
 public outgoingcallreciver() { 
  recorder = new myrecorder(); 
 } 
  
 public outgoingcallreciver (myrecorder recorder) { 
  this.recorder = recorder; 
 } 
  
 @override 
 public void onreceive(context ctx, intent intent) { 
  string phonestate = intent.getaction(); 
   
  if (phonestate.equals(intent.action_new_outgoing_call)) { 
   string phonenum = intent.getstringextra(intent.extra_phone_number);//拨出号码 
   recorder.setphonenumber(phonenum); 
   recorder.setiscommingnumber(false); 
   log.d(tag, "设置为去电状态"); 
   log.d(tag, "去电状态 呼叫：" + phonenum); 
  } 
   
  if (phonestate.equals(outgoingcallstate.foregroundcallstate.dialing)) { 
   log.d(tag, "正在拨号..."); 
  } 
   
  if (phonestate.equals(outgoingcallstate.foregroundcallstate.alerting)) { 
   log.d(tag, "正在呼叫..."); 
  } 
   
  if (phonestate.equals(outgoingcallstate.foregroundcallstate.active)) { 
   if (!recorder.iscommingnumber() && !recorder.isstarted()) { 
    log.d(tag, "去电已接通 启动录音机"); 
    recorder.start(); 
     
   } 
  } 
   
  if (phonestate.equals(outgoingcallstate.foregroundcallstate.disconnected)) { 
   if (!recorder.iscommingnumber() && recorder.isstarted()) { 
    log.d(tag, "已挂断 关闭录音机"); 
    recorder.stop(); 
   } 
  } 
 } 
 
} 

      其中有这么一段代码：

string phonestate = intent.getaction();  
    
  if (phonestate.equals(intent.action_new_outgoing_call)) {  
   string phonenum = intent.getstringextra(intent.extra_phone_number);//拨出号码  
   recorder.setphonenumber(phonenum);  
   recorder.setiscommingnumber(false);  
   log.d(tag, "设置为去电状态");  
   log.d(tag, "去电状态 呼叫：" + phonenum);  
  } 

 这里是接收系统发出的广播，用于接收去电广播。这样，就获得了去电状态。

       3、有了以上主要代码，可以说，来去电监听功能算是完成了，下面创建一个service来运行监听：

package com.sdvdxl.service; 
 
import android.app.service; 
import android.content.context; 
import android.content.intent; 
import android.content.intentfilter; 
import android.os.ibinder; 
import android.telephony.phonestatelistener; 
import android.telephony.telephonymanager; 
import android.util.log; 
import android.widget.toast; 
 
import com.sdvdxl.outgoingcall.outgoingcallstate; 
import com.sdvdxl.phonerecorder.myrecorder; 
import com.sdvdxl.phonerecorder.outgoingcallreciver; 
import com.sdvdxl.phonerecorder.tellistener; 
 
public class phonecallstateservice extends service { 
 private outgoingcallstate outgoingcallstate; 
 private outgoingcallreciver outgoingcallreciver; 
 private myrecorder recorder; 
  
 @override 
 public void oncreate() { 
  super.oncreate(); 
   
  //------以下应放在onstartcommand中，但2.3.5以下版本不会因service重新启动而重新调用-------- 
  //监听电话状态，如果是打入且接听 或者 打出 则开始自动录音 
  //通话结束，保存文件到外部存储器上 
  log.d("recorder", "正在监听中..."); 
  recorder = new myrecorder(); 
  outgoingcallstate = new outgoingcallstate(this); 
  outgoingcallreciver = new outgoingcallreciver(recorder); 
  outgoingcallstate.startlisten(); 
  toast.maketext(this, "服务已启动", toast.length_long).show(); 
   
  //去电 
  intentfilter outgoingcallfilter = new intentfilter(); 
  outgoingcallfilter.addaction(outgoingcallstate.foregroundcallstate.idle); 
  outgoingcallfilter.addaction(outgoingcallstate.foregroundcallstate.dialing); 
  outgoingcallfilter.addaction(outgoingcallstate.foregroundcallstate.alerting); 
  outgoingcallfilter.addaction(outgoingcallstate.foregroundcallstate.active); 
  outgoingcallfilter.addaction(outgoingcallstate.foregroundcallstate.disconnected); 
   
  outgoingcallfilter.addaction("android.intent.action.phone_state"); 
  outgoingcallfilter.addaction("android.intent.action.new_outgoing_call"); 
   
  //注册接收者 
  registerreceiver(outgoingcallreciver, outgoingcallfilter); 
   
  //来电 
  telephonymanager telmgr = (telephonymanager)getsystemservice( 
    context.telephony_service); 
  telmgr.listen(new tellistener(recorder), phonestatelistener.listen_call_state); 
   
   
 } 
  
 @override 
 public ibinder onbind(intent intent) { 
  // todo auto-generated method stub 
  return null; 
 } 
 
 @override 
 public void ondestroy() { 
  super.ondestroy(); 
  unregisterreceiver(outgoingcallreciver); 
  toast.maketext( 
    this, "已关闭电话监听服务", toast.length_long) 
    .show(); 
  log.d("recorder", "已关闭电话监听服务"); 
 } 
 
 @override 
 public int onstartcommand(intent intent, int flags, int startid) { 
   
  return start_sticky; 
 } 
 
} 

注册以下service：

xml/html代码

<service android:name="com.sdvdxl.service.phonecallstateservice" />  

       到此为止，来去电状态的监听功能算是完成了，剩下一个录音机，附上录音机代码如下：

package com.sdvdxl.phonerecorder; 
 
import java.io.file; 
import java.io.ioexception; 
import java.text.simpledateformat; 
import java.util.date; 
 
import android.media.mediarecorder; 
import android.os.environment; 
import android.util.log; 
 
public class myrecorder { 
 private string phonenumber; 
 private mediarecorder mrecorder; 
 private boolean started = false; //录音机是否已经启动 
 private boolean iscommingnumber = false;//是否是来电 
 private string tag = "recorder"; 
  
  
 public myrecorder(string phonenumber) { 
  this.setphonenumber(phonenumber); 
 } 
  
 public myrecorder() { 
 } 
 
 public void start() { 
  started = true; 
  mrecorder = new mediarecorder(); 
   
  file recordpath = new file( 
    environment.getexternalstoragedirectory() 
    , "/my record");  
  if (!recordpath.exists()) { 
   recordpath.mkdirs(); 
   log.d("recorder", "创建目录"); 
  } 
   
  string calldir = "呼出"; 
  if (iscommingnumber) { 
   calldir = "呼入"; 
  } 
  string filename = calldir + "-" + phonenumber + "-"  
    + new simpledateformat("yy-mm-dd_hh-mm-ss") 
     .format(new date(system.currenttimemillis())) + ".mp3";//实际是3gp 
  file recordname = new file(recordpath, filename); 
   
  try { 
   recordname.createnewfile(); 
   log.d("recorder", "创建文件" + recordname.getname()); 
  } catch (ioexception e) { 
   e.printstacktrace(); 
  } 
   
  mrecorder.setaudiosource(mediarecorder.audiosource.default); 
  mrecorder.setoutputformat(mediarecorder.outputformat.default); 
  mrecorder.setaudioencoder(mediarecorder.audioencoder.default); 
   
  mrecorder.setoutputfile(recordname.getabsolutepath()); 
   
  try { 
   mrecorder.prepare(); 
  } catch (illegalstateexception e) { 
   e.printstacktrace(); 
  } catch (ioexception e) { 
   e.printstacktrace(); 
  } 
  mrecorder.start(); 
  started = true; 
  log.d(tag , "录音开始"); 
 } 
  
 public void stop() { 
  try { 
   if (mrecorder!=null) { 
    mrecorder.stop(); 
    mrecorder.release(); 
    mrecorder = null; 
   } 
   started = false; 
  } catch (illegalstateexception e) { 
   e.printstacktrace(); 
  } 
   
   
  log.d(tag , "录音结束"); 
 } 
  
 public void pause() { 
   
 } 
 
 public string getphonenumber() { 
  return phonenumber; 
 } 
 
 public void setphonenumber(string phonenumber) { 
  this.phonenumber = phonenumber; 
 } 
 
 public boolean isstarted() { 
  return started; 
 } 
 
 public void setstarted(boolean hasstarted) { 
  this.started = hasstarted; 
 } 
 
 public boolean iscommingnumber() { 
  return iscommingnumber; 
 } 
 
 public void setiscommingnumber(boolean iscommingnumber) { 
  this.iscommingnumber = iscommingnumber; 
 } 
 
} 

       到此，来去电通话自动录音的所有功能就完成了，大家可以自己试着编写并实现。

       以上就是对android 电话录音的开发，希望能帮助有需要的朋友，谢谢大家对本站的支持！