Android 實現(xiàn)電話來去自動錄音的功能

更新時間：2016年08月11日 10:13:48 投稿：lqh

本文主要介紹Android 電話自動錄音功能的開發(fā)，這里提供實現(xiàn)代碼和實現(xiàn)效果圖，有需要的小伙伴可以參考下

我們在使用Android手機打電話時，有時可能會需要對來去電通話自動錄音，本文就詳細講解實現(xiàn)Android來去電通話自動錄音的方法，大家按照文中的方法編寫程序就可以完成此功能。

來去電自動錄音的關(guān)鍵在于如何監(jiān)聽手機電話狀態(tài)的轉(zhuǎn)變：

1）來電的狀態(tài)的轉(zhuǎn)換如下（紅色標記是我們要用到的狀態(tài)）

空閑（IDEL）——> 響鈴（RINGING）——> 接聽（ACTIVE）——> 掛斷（經(jīng)歷DISCONNECTING——DISCONNECTED）——> 空閑（IDEL）

或者空閑（IDEL）——> 響鈴（RINGING）——> 拒接 ——> 空閑（IDEL）

2）去電狀態(tài)的轉(zhuǎn)換如下

空閑（IDEL）——> 撥號（DIALING）——> （對方）響鈴（ALERTING） ——> 建立連接（ACTIVE）—— 掛斷（經(jīng)歷DISCONNECTING——DISCONNECTED）——> 空閑（IDEL）

或者空閑（IDEL）——> 撥號（DIALING）——> （對方）響鈴（ALERTING）——> 掛斷/對方拒接 ——> 空閑（IDEL）

下面就分別就來電和去電這兩種狀態(tài)分析并實現(xiàn)。

1、先進行來電的分析和實現(xiàn)。

相對去電來說，來電狀態(tài)的轉(zhuǎn)換檢測要簡單些。android api 中的PhoneStateListener 類提供了相應的方法，但我們需要覆蓋其中的 onCallStateChanged(int state, String incomingNumber) 方法即可實現(xiàn)來電狀態(tài)的檢測，并在此基礎(chǔ)上添加錄音功能即可。其中 state 參數(shù)就是各種電話狀態(tài)，到時我們將它跟下面我們要用到的狀態(tài)進行比較，若是電話處在我們想要的狀態(tài)上，則進行一系列操作，否則就不管他。想要獲取這些狀態(tài)，還需要另一個電話相關(guān)類，那就是 TelephonyManager，該類提供了一些電話狀態(tài)，其中我們要用到的是：TelephonyManager.CALL_STATE_IDLE（空閑）、TelephonyManager.CALL_STATE_OFFHOOK（摘機）和 TelephonyManager.CALL_STATE_RINGING（來電響鈴）這三個狀態(tài)。判別這三種狀態(tài)，可以繼承 android.telephony.PhoneStateListener 類，實現(xiàn)上面提到的 onCallStateChanged(int state, String incomingNumber) 方法，請看如下代碼：

public class TelListener extends PhoneStateListener {  
  
 @Override  
 public void onCallStateChanged(int state, String incomingNumber) {  
  super.onCallStateChanged(state, incomingNumber);  
  
  switch (state) {  
  case TelephonyManager.CALL_STATE_IDLE: // 空閑狀態(tài)，即無來電也無去電  
   Log.i("TelephoneState", "IDLE");  
   //此處添加一系列功能代碼 
   break;  
  case TelephonyManager.CALL_STATE_RINGING: // 來電響鈴  
   Log.i("TelephoneState", "RINGING");  
   //此處添加一系列功能代碼 
   break;  
  case TelephonyManager.CALL_STATE_OFFHOOK: // 摘機，即接通 
   Log.i("TelephoneState", "OFFHOOK");  
   //此處添加一系列功能代碼 
   break;  
  }  
  
  Log.i("TelephoneState", String.valueOf(incomingNumber));  
 }  
  
}

有了以上來電狀態(tài)監(jiān)聽代碼還不足以實現(xiàn)監(jiān)聽功能，還需要在我們的一個Activity或者Service中實現(xiàn)監(jiān)聽，方法很簡單，代碼如下：

/** 
* 在activity 或者 service中加入如下代碼，以實現(xiàn)來電狀態(tài)監(jiān)聽 
*/ 
TelephonyManager telMgr = (TelephonyManager)context.getSystemService( 
    Context.TELEPHONY_SERVICE); 
  telMgr.listen(new TelListener(), PhoneStateListener.LISTEN_CALL_STATE);

這樣就實現(xiàn)了來電狀態(tài)監(jiān)聽功能，但要能夠在設(shè)備中跑起來，這還不夠，它還需要兩個獲取手機電話狀態(tài)的權(quán)限：

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

這樣的話就可以跑起來了。

說到這，我想如果你可以實現(xiàn)錄音功能的話，在此基礎(chǔ)上實現(xiàn)來電自動錄音就應該沒什么問題了，不過請容我簡單羅嗦幾句。既然是來電，那么要想錄音的話，那么應該就是在監(jiān)聽到 TelephonyManager.CALL_STATE_OFFHOOK 的狀態(tài)時開啟錄音機開始錄音，在監(jiān)聽到TelephonyManager.CALL_STATE_IDLE 的狀態(tài)時關(guān)閉錄音機停止錄音。這樣，來電錄音功能就完成了，不要忘記錄音功能同樣需要權(quán)限：

<uses-permission android:name="android.permission.RECORD_AUDIO"/>  
  
<!-- 要存儲文件或者創(chuàng)建文件夾的話還需要以下兩個權(quán)限 -->  
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>  
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

2、介紹完了來電自動錄音，下面就來介紹去電自動錄音的實現(xiàn)方法。

上面說過，相比來電狀態(tài)的監(jiān)聽，去電的要麻煩些，甚至這種方法不是通用的，這個主要是因為android api 中沒有提供去電狀態(tài)監(jiān)聽的相應類和方法（也許我剛接觸，沒有找到）。剛開始網(wǎng)上搜索了一通也沒有找到對應的解決方法，大多是來電監(jiān)聽的，也就是上面的方法。不過中途發(fā)現(xiàn)一篇博文（后來就搜不到了），記得是查詢系統(tǒng)日志的方式，從中找到去電過程中的各個狀態(tài)的關(guān)鍵詞。無奈之中，最終妥協(xié)了此方法。

我的（聯(lián)想A65上的）去電日志內(nèi)容如下：

過濾關(guān)鍵詞為 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

過濾關(guān)鍵詞 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

從上面的日志可以看到，每一行的末尾的大寫英文詞就是去電的狀態(tài)，狀態(tài)說明如下：

DIALING 撥號，對方還未響鈴
ACTIVE 對方接通，通話建立
DISCONNECTING 通話斷開時
DISCONNECTED 通話已斷開，可以認為是掛機了

由于我撥打的是10010，沒有響鈴過程（電腦自動接通的夠快），還少了一個狀態(tài)，狀態(tài)是ALERTING ，這個就是對方正在響鈴的狀態(tài)。

有了這幾個去電狀態(tài)就好辦了，現(xiàn)在我們要做的就是讀取系統(tǒng)日志，然后找到這些狀態(tài)，提取的關(guān)鍵詞就是上面提到的 mforeground（前臺通話狀態(tài)）和 mbackground （后臺通話狀態(tài)）（可能不一樣的設(shè)備生成的不一樣，根據(jù)自己具體設(shè)備設(shè)置，這里只提取前臺的），如果讀取的這一行日志中包含 mforground ，再看看是否包含上面的狀態(tài)的單詞。既然說的如此，那么看看讀取系統(tǒng)日志的代碼吧。

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() 這個是前臺呼叫狀態(tài) 
 * mBackgroundCall.getState() 后臺電話 
 * 若 是 DIALING 則是正在撥號，等待建立連接，但對方還沒有響鈴， 
 * ALERTING 呼叫成功，即對方正在響鈴， 
 * 若是 ACTIVE 則已經(jīng)接通 
 * 若是 DISCONNECTED 則本號碼呼叫已經(jīng)掛斷 
 * 若是 IDLE 則是處于 空閑狀態(tài) 
 *  
 */ 
public class ReadLog extends Thread { 
 private Context ctx; 
 private int logCount; 
  
 private static final String TAG = "LogInfo OutGoing Call"; 
  
 /** 
  * 前后臺電話 
  * @author sdvdxl 
  *  
  */ 
 private static class CallViewState { 
  public static final String FORE_GROUND_CALL_STATE = "mForeground"; 
 } 
  
 /** 
  * 呼叫狀態(tài) 
  * @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; 
 } 
  
 /** 
  * 讀取Log流 
  * 取得呼出狀態(tài)的log 
  * 從而得到轉(zhuǎn)換狀態(tài) 
  */ 
 @Override 
 public void run() { 
  Log.d(TAG, "開始讀取日志記錄"); 
   
  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++; 
    //輸出所有 
   Log.v(TAG, line); 
     
    //日志超過512條就清理 
    if (logCount>512) { 
     //清理日志 
     Runtime.getRuntime().exec(clearParams) 
      .destroy();//銷毀進程，釋放資源 
     logCount = 0; 
     Log.v(TAG, "-----------清理日志---------------"); 
    }  
     
    /*---------------------------------前臺呼叫-----------------------*/ 
    //空閑 
    if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE) 
      && line.contains(ReadLog.CallState.IDLE)) { 
     Log.d(TAG, ReadLog.CallState.IDLE); 
    } 
     
    //正在撥號，等待建立連接，即已撥號，但對方還沒有響鈴， 
    if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE) 
      && line.contains(ReadLog.CallState.DIALING)) { 
     Log.d(TAG, ReadLog.CallState.DIALING); 
    } 
     
    //呼叫對方 正在響鈴 
    if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE) 
      && line.contains(ReadLog.CallState.ALERTING)) { 
     Log.d(TAG, ReadLog.CallState.ALERTING); 
    } 
     
    //已接通，通話建立 
    if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE) 
      && line.contains(ReadLog.CallState.ACTIVE)) { 
     Log.d(TAG, ReadLog.CallState.ACTIVE); 
    } 
     
    //斷開連接，即掛機 
    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

以上代碼中，之所以用線程，是為了防止讀取日志過程中阻滯主方法的其他方法的執(zhí)行，影響到程序捕捉對應的電話狀態(tài)。

好了，捕捉到了去電過程中各個狀態(tài)的轉(zhuǎn)變，那么，如何通知給程序呢，我采用的方法是捕獲后立馬給系統(tǒng)發(fā)送廣播，然后程序進行廣播接收，接收后再處理錄音事件。要發(fā)送廣播，就要發(fā)送一個唯一的廣播，為此，建立如下類：

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; 
 } 
  
 /** 
  * 前臺呼叫狀態(tài) 
  * @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"; 
 } 
  
 /** 
  * 開始監(jiān)聽呼出狀態(tài)的轉(zhuǎn)變， 
  * 并在對應狀態(tài)發(fā)送廣播 
  */ 
 public void startListen() { 
  new ReadLog(ctx).start(); 
  Log.d("Recorder", "開始監(jiān)聽呼出狀態(tài)的轉(zhuǎn)變，并在對應狀態(tài)發(fā)送廣播"); 
 } 
  
}

程序需要讀取系統(tǒng)日志權(quán)限：

XML/HTML代碼

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

然后，在讀取日志的類中檢測到去電各個狀態(tài)的地方發(fā)送一個廣播，那么，讀取日志的完整代碼如下：

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() 這個是前臺呼叫狀態(tài) 
 * mBackgroundCall.getState() 后臺電話 
 * 若 是 DIALING 則是正在撥號，等待建立連接，但對方還沒有響鈴， 
 * ALERTING 呼叫成功，即對方正在響鈴， 
 * 若是 ACTIVE 則已經(jīng)接通 
 * 若是 DISCONNECTED 則本號碼呼叫已經(jīng)掛斷 
 * 若是 IDLE 則是處于 空閑狀態(tài) 
 *  
 */ 
public class ReadLog extends Thread { 
 private Context ctx; 
 private int logCount; 
  
 private static final String TAG = "LogInfo OutGoing Call"; 
  
 /** 
  * 前后臺電話 
  * @author sdvdxl 
  *  
  */ 
 private static class CallViewState { 
  public static final String FORE_GROUND_CALL_STATE = "mForeground"; 
 } 
  
 /** 
  * 呼叫狀態(tài) 
  * @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; 
 } 
  
 /** 
  * 讀取Log流 
  * 取得呼出狀態(tài)的log 
  * 從而得到轉(zhuǎn)換狀態(tài) 
  */ 
 @Override 
 public void run() { 
  Log.d(TAG, "開始讀取日志記錄"); 
   
  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++; 
    //輸出所有 
   Log.v(TAG, line); 
     
    //日志超過512條就清理 
    if (logCount>512) { 
     //清理日志 
     Runtime.getRuntime().exec(clearParams) 
      .destroy();//銷毀進程，釋放資源 
     logCount = 0; 
     Log.v(TAG, "-----------清理日志---------------"); 
    }  
     
    /*---------------------------------前臺呼叫-----------------------*/ 
    //空閑 
    if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE) 
      && line.contains(ReadLog.CallState.IDLE)) { 
     Log.d(TAG, ReadLog.CallState.IDLE); 
    } 
     
    //正在撥號，等待建立連接，即已撥號，但對方還沒有響鈴， 
    if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE) 
      && line.contains(ReadLog.CallState.DIALING)) { 
     //發(fā)送廣播 
     Intent dialingIntent = new Intent(); 
     dialingIntent.setAction(OutgoingCallState.ForeGroundCallState.DIALING); 
     ctx.sendBroadcast(dialingIntent); 
      
     Log.d(TAG, ReadLog.CallState.DIALING); 
    } 
     
    //呼叫對方 正在響鈴 
    if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE) 
      && line.contains(ReadLog.CallState.ALERTING)) { 
     //發(fā)送廣播 
     Intent dialingIntent = new Intent(); 
     dialingIntent.setAction(OutgoingCallState.ForeGroundCallState.ALERTING); 
     ctx.sendBroadcast(dialingIntent); 
      
     Log.d(TAG, ReadLog.CallState.ALERTING); 
    } 
     
    //已接通，通話建立 
    if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE) 
      && line.contains(ReadLog.CallState.ACTIVE)) { 
     //發(fā)送廣播 
     Intent dialingIntent = new Intent(); 
     dialingIntent.setAction(OutgoingCallState.ForeGroundCallState.ACTIVE); 
     ctx.sendBroadcast(dialingIntent); 
      
     Log.d(TAG, ReadLog.CallState.ACTIVE); 
    } 
     
    //斷開連接，即掛機 
    if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE) 
      && line.contains(ReadLog.CallState.DISCONNECTED)) { 
     //發(fā)送廣播 
     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

發(fā)送了廣播，那么就要有接收者，定義接收者如下（關(guān)于錄音機的代碼可以先忽略）：

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);//撥出號碼 
   recorder.setPhoneNumber(phoneNum); 
   recorder.setIsCommingNumber(false); 
   Log.d(TAG, "設(shè)置為去電狀態(tài)"); 
   Log.d(TAG, "去電狀態(tài) 呼叫：" + phoneNum); 
  } 
   
  if (phoneState.equals(OutgoingCallState.ForeGroundCallState.DIALING)) { 
   Log.d(TAG, "正在撥號..."); 
  } 
   
  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, "去電已接通 啟動錄音機"); 
    recorder.start(); 
     
   } 
  } 
   
  if (phoneState.equals(OutgoingCallState.ForeGroundCallState.DISCONNECTED)) { 
   if (!recorder.isCommingNumber() && recorder.isStarted()) { 
    Log.d(TAG, "已掛斷 關(guān)閉錄音機"); 
    recorder.stop(); 
   } 
  } 
 } 
 
}

其中有這么一段代碼：

String phoneState = intent.getAction();  
    
  if (phoneState.equals(Intent.ACTION_NEW_OUTGOING_CALL)) {  
   String phoneNum = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);//撥出號碼  
   recorder.setPhoneNumber(phoneNum);  
   recorder.setIsCommingNumber(false);  
   Log.d(TAG, "設(shè)置為去電狀態(tài)");  
   Log.d(TAG, "去電狀態(tài) 呼叫：" + phoneNum);  
  }

這里是接收系統(tǒng)發(fā)出的廣播，用于接收去電廣播。這樣，就獲得了去電狀態(tài)。

3、有了以上主要代碼，可以說，來去電監(jiān)聽功能算是完成了，下面創(chuàng)建一個service來運行監(jiān)聽：

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(); 
   
  //------以下應放在onStartCommand中，但2.3.5以下版本不會因service重新啟動而重新調(diào)用-------- 
  //監(jiān)聽電話狀態(tài)，如果是打入且接聽 或者 打出 則開始自動錄音 
  //通話結(jié)束，保存文件到外部存儲器上 
  Log.d("Recorder", "正在監(jiān)聽中..."); 
  recorder = new MyRecorder(); 
  outgoingCallState = new OutgoingCallState(this); 
  outgoingCallReciver = new OutgoingCallReciver(recorder); 
  outgoingCallState.startListen(); 
  Toast.makeText(this, "服務已啟動", Toast.LENGTH_LONG).show(); 
   
  //去電 
  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"); 
   
  //注冊接收者 
  registerReceiver(outgoingCallReciver, outgoingCallFilter); 
   
  //來電 
  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, "已關(guān)閉電話監(jiān)聽服務", Toast.LENGTH_LONG) 
    .show(); 
  Log.d("Recorder", "已關(guān)閉電話監(jiān)聽服務"); 
 } 
 
 @Override 
 public int onStartCommand(Intent intent, int flags, int startId) { 
   
  return START_STICKY; 
 } 
 
}

注冊以下service：

XML/HTML代碼

到此為止，來去電狀態(tài)的監(jiān)聽功能算是完成了，剩下一個錄音機，附上錄音機代碼如下：

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; //錄音機是否已經(jīng)啟動 
 private boolean isCommingNumber = false;//是否是來電 
 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", "創(chuàng)建目錄"); 
  } 
   
  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";//實際是3gp 
  File recordName = new File(recordPath, fileName); 
   
  try { 
   recordName.createNewFile(); 
   Log.d("recorder", "創(chuàng)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 , "錄音開始"); 
 } 
  
 public void stop() { 
  try { 
   if (mrecorder!=null) { 
    mrecorder.stop(); 
    mrecorder.release(); 
    mrecorder = null; 
   } 
   started = false; 
  } catch (IllegalStateException e) { 
   e.printStackTrace(); 
  } 
   
   
  Log.d(TAG , "錄音結(jié)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，來去電通話自動錄音的所有功能就完成了，大家可以自己試著編寫并實現(xiàn)。

以上就是對Android 電話錄音的開發(fā)，希望能幫助有需要的朋友，謝謝大家對本站的支持！

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