手把手教你Android来去电通话自动录音的方法
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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:
- <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) {
-  
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