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：
DIALING 拨号，对方还未响铃 ACTIVE 对方接通，通话建立 DISCONNECTING 通话断开时 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！