检测拨出电话何时开始播放回铃音

【问题标题】：Detect when the outgoing call starts playing ringback tone检测拨出电话何时开始播放回铃音
【发布时间】：2019-01-07 17:22:12
【问题描述】：

我正在尝试检测拨出电话在开始播放回铃音时的状态。我尝试了各种方法来检测这种状态。以下是其中一些：

1。使用PhoneStateListener:

(Cannot detect when outgoing call is answered in Android)

import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;

public class CustomPhoneStateListener extends PhoneStateListener {

    public void onCallStateChanged(int state, String num) {
        Log.d(CallStatusPlugin.TAG, ">>>state changed" + state);
    }
}

但是像TelephonyManager.CALL_STATE_IDLE、TelephonyManager.CALL_STATE_OFFHOOK 这样的状态并没有给我们这些状态。

2。使用READ_PRECISE_PHONE_STATE:

将方法添加到上述同一个手机状态监听器

public void onPreciseCallStateChanged() {
    Log.d(CallStatusPlugin.TAG, "onPreciseCallStateChanged");
}

但根据我的研究，读取精确状态要求应用必须是系统应用。

3。使用NotificationListener:

public class CustomNotificationListener extends NotificationListenerService {

    public static final String TAG = "CallStatusPlugin";

    public CustomNotificationListener() {
        Log.v(TAG, ">>> CustomNotificationListener");
    }

    public void onNotificationPosted(StatusBarNotification sbn) {
        Log.i(TAG, "New Notification");

        Bundle extras = sbn.getNotification().extras;

        if ("Ongoing call".equals(extras.getString(Notification.EXTRA_TEXT))) {
            Log.v(TAG, "outgoing call");
        } else if ("Dialing".equals(extras.getString(Notification.EXTRA_TEXT))) {
            Log.v(TAG, "dialling call");
        }
    }
}

但这无济于事，因为当拨出电话开始播放回铃音时，操作系统不会更改通知。

4。使用BroadcastReceiver:

public class CallBroadcastReceiver extends BroadcastReceiver {

    public static final String TAG = "CallStatusPlugin";

    public void onReceive(Context context, Intent intent) {
        String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);

        Log.i(TAG, "CallBroadcastReceiver state: " + state);

        // TelephonyManager.EXTRA_FOREGROUND_CALL_STATE = "foreground_state"
        Log.d(TAG, "new state >>>>" + intent.getIntExtra("foreground_state", -2));
    }
}

但也没有用。

5。使用反射：

我还尝试使用反射获取默认拨号程序的实例，但没有成功：

    //com.samsung.android.incallui
    Reflections reflections = new Reflections("com.samsung.android.contacts", new SubTypesScanner(false));

    final ClassLoader classLoader = this.getClass().getClassLoader();
    ClassLoader[] loaders = { classLoader };

    ConfigurationBuilder configurationBuilder = (ConfigurationBuilder) reflections.getConfiguration();
    configurationBuilder.setClassLoaders(loaders);

    Log.d(TAG, "cl" + classLoader.toString());
    Set<Class<? extends Object>> allClasses = reflections.getSubTypesOf(Object.class);
    Log.d(TAG, "allclasses" + allClasses.toString());

我无法获得任何课程（也许我没有正确使用反射）

6。使用InCallService:

通过将默认拨号器（我不想使用）替换为自定义拨号器来获得Call 状态。

import android.os.Bundle;
import android.telecom.Call;
import android.telecom.InCallService;
import android.util.Log;

public class CustomInCallService extends InCallService {

    public static final String TAG = "CallStatusPlugin";

    @Override
    public void onCallAdded(Call call) {
        Log.d(TAG, "onCallAdded: " + call.getState());

        call.registerCallback(
                new Call.Callback() {
                    @Override
                    public void onConnectionEvent (Call call, String event, Bundle extras) {
                        Log.d(TAG, "Call.Callback.onConnectionEvent: " + event + ", " + call.getState());
                    }

                    @Override
                    public void onStateChanged (Call call, int state) {
                        Log.d(TAG, "Call.Callback.onStateChanged: " + state + ", " + call.getState());
                    }
                }
        );
    }
}

onStateChanged 终于给了我一些东西：

通话状态 -> 9 (STATE_CONNECTING) -> 1 (STATE_DIALING) -> 4 (STATE_ACTIVE)（应答时）-> 7 (STATE_DISCONNECTING)

但是，当拨出电话出现无法接通或电话关机等问题时，通话状态也会更改为STATE_DIALING。所以这意味着我们不能说DIALING state 是拨出电话开始播放回铃音的状态。

7。从反射中使用CallManager：

（2018 年 8 月 3 日添加）

public class OutCallLogger extends BroadcastReceiver {

    public static final String TAG = "CallStatusPlugin";

    public OutCallLogger() {
        Log.e(TAG, "\n\n\nOutCallLogger Instance Created\n\n\n");
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
        Log.i(TAG, "OutCallLogger state: " + state);

        String number = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
        Log.i(TAG, "Outgoing Number: " + number);

        // TelephonyManager.EXTRA_FOREGROUND_CALL_STATE = "foreground_state"
        Log.d(TAG, "new state >>>>" + intent.getIntExtra("foreground_state", -2));
        Log.d(TAG, "new state >>>>" + intent.getIntExtra("ringing_state", -2));
        Log.d(TAG, "new state >>>>" + intent.getIntExtra("background_state", -2));
        Log.d(TAG, "new state >>>>" + intent.getIntExtra("disconnect_cause", -2));

        final ClassLoader classLoader = this.getClass().getClassLoader();

        try {
            Class<?> callManagerClass = classLoader.loadClass("com.android.internal.telephony.CallManager");
            Log.e(TAG, "CallManager: Class loaded " + callManagerClass.toString());

            Method[] methods = callManagerClass.getDeclaredMethods();
            for (Method m : methods) {
                Log.e(TAG, "Methods: " + m.getName());
            }

            Method getInstanceMethod = callManagerClass.getDeclaredMethod("getInstance");
            getInstanceMethod.setAccessible(true);
            Log.e(TAG, "CallManager: Method loaded " + getInstanceMethod.getName());

            Object callManagerObject = getInstanceMethod.invoke(null);
            Log.e(TAG, "CallManager: Object loaded " + callManagerObject.getClass().getName());

            Method getAllPhonesMethod = callManagerClass.getDeclaredMethod("getAllPhones");
            Log.e(TAG, "CallManager: Method loaded " + getAllPhonesMethod.getName());

            Method getForegroundCallsMethod = callManagerClass.getDeclaredMethod("getForegroundCalls");
            Log.e(TAG, "CallManager: Method loaded " + getForegroundCallsMethod.getName());
            List foregroundCalls = (List) getForegroundCallsMethod.invoke(callManagerObject);
            Log.e(TAG, "Foreground calls: " + foregroundCalls + ", " + foregroundCalls.size());

            Method getBackgroundCallsMethod = callManagerClass.getDeclaredMethod("getBackgroundCalls");
            Log.e(TAG, "CallManager: Method loaded " + getForegroundCallsMethod.getName());
            List backgroundCalls = (List) getBackgroundCallsMethod.invoke(callManagerObject);
            Log.e(TAG, "Background calls: " + backgroundCalls + ", " + backgroundCalls.size());

            Timer timer = new Timer();

            // keep printing all the for 20 seconds to check if we got one
            TimerTask doAsynchronousTask = new TimerTask() {
                long t0 = System.currentTimeMillis();

                @Override
                public void run() {
                    // cancel the timer after 20 seconds
                    if (System.currentTimeMillis() - t0 > 20 * 1000) {
                        cancel();
                        return;
                    }

                    try {
                        List phonesObject = (List) getAllPhonesMethod.invoke(callManagerObject);
                        Log.e(TAG, "All phones " + phonesObject + ", " + phonesObject.size());

                        List foregroundCalls = (List) getForegroundCallsMethod.invoke(callManagerObject);
                        Log.e(TAG, "Foreground calls: " + foregroundCalls + ", " + foregroundCalls.size());

                        Object backgroundCalls = getBackgroundCallsMethod.invoke(callManagerObject);
                        Log.e(TAG, "Background calls: " + backgroundCalls);

                        String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
                        Log.i(TAG, "New state: " + state);
                    } catch (Exception e) {
                        Log.e(TAG, ">>>1. " + e.getMessage());
                    }
                }
            };

            timer.schedule(doAsynchronousTask, 0, 1000); //execute in every 1000 ms
        } catch (ClassNotFoundException e) {
            Log.e(TAG, ">>>2. " + e.getMessage());
        } catch (NoSuchMethodException e) {
            Log.e(TAG, ">>>3. " + e.getMessage());
        } catch (InvocationTargetException e) {
            Log.e(TAG, ">>>4. " + e.getMessage());
        } catch (IllegalAccessException e) {
            Log.e(TAG, ">>>5. " + e.getMessage());
        }
    }
}

但我将所有后台/前台呼叫和电话作为 emty 结果：

08-03 15:19:22.638  2586  4636 E CallStatusPlugin: All phones [], 0
08-03 15:19:22.639  2586  4636 E CallStatusPlugin: Foreground calls: [], 0
08-03 15:19:22.639  2586  4636 E CallStatusPlugin: Background calls: []

不确定操作系统是否使用CallManager。

经过 2-3 周的研究，我了解到：

  1. 隐藏的 API 为我们提供了与操作系统更深层次的集成（但 Google may remove access to hidden API in Android P）
  2. Ringing sound of an outgoing call == Ringback tone
  3. State dialing !== State of playing ringback tone
  4. 但是我没有得出结论，我可以说这是我们可以获得拨出电话开始播放回铃音的状态的方式

我通过阅读adb logcat '*:V' 的所有操作系统日志来继续调试，并看到在我听到回铃音 (adb logcat -b system '*:V') 时正在打印日志：

07-31 13:34:13.487  3738 29960 I Telephony: AsyncConnectTonePlayer : play
07-31 13:34:13.784  3273  7999 D SSRM:p  : SIOP:: AP = 330, PST = 313 (W:26), BAT = 294, USB = 0, CHG = 0
07-31 13:34:13.902  3738 29960 I Telephony: AsyncConnectTonePlayer : onCompletion
07-31 13:34:14.304  3273 15438 D CustomFrequencyManagerService: releaseDVFSLockLocked : Getting Lock type frm List : DVFS_MIN_LIMIT  frequency : 1352000  uid : 1000  pid : 3273  tag : com.samsung.android.incallui@2
07-31 13:34:14.639  3273  7999 D AudioService: getStreamVolume 0 index 10
07-31 13:34:16.449  4175  4175 D io_stats: !@ 179,0 r 264349 9232882 w 465999 10111332 d 42634 3418440 f 235485 235449 iot 468730 459107 th 51200 0 0 pt 0 inp 0 0 104823.814

然后我开始在谷歌上搜索与 io stats events android 和 gsm connection events 相关的内容，但我无法找到任何方法来获取特定状态呼叫开始播放回铃音的拨出电话。

我查看了各种 Android 代码以找出一些提示：

  1. TelephonyConnection
  2. GsmConnection

我应该寻求实现这一目标的任何提示或方向？比如 GSM 连接，ConnectionService、ConnectivityManager、ConnectionService 或 ConnectionRequest 什么？

编辑 1：

阅读更多日志后，我找到了SipManager，我读到了SIP Basic Call Flow Examples，我认为它是Android 用来拨打或接听电话的。

07-31 16:29:55.335  4076  5081 I reSIProcate: INFO | RESIP:TRANSACTION | TuSelector.cxx:131 | Start add(alm)
07-31 16:29:55.335  4076  5081 I reSIProcate: INFO | RESIP:TRANSACTION | TuSelector.cxx:138 | AlarmMsg is not null
07-31 16:29:55.335  4076  5081 I reSIProcate: INFO | RESIP:TRANSACTION | TuSelector.cxx:140 | Sending AlarmMessage 0 to TUs
07-31 16:29:55.335  4076  5081 I reSIProcate: INFO | RESIP:TRANSACTION | TuSelector.cxx:145 | End add(alm)
07-31 16:29:55.335  4076  5081 I reSIProcate: INFO | RESIP:DNS | DnsResult.cxx:240 | Whitelisting 2405:200:380:1581::42(28): 2405:200:380:1581::42
07-31 16:29:55.335  4076  5081 I reSIProcate: INFO | RESIP:DNS | RRVip.cxx:128 | updating an existing vip: 2405:200:380:1581::42 with 2405:200:380:1581::42
07-31 16:29:55.335  4076  5081 I reSIProcate: INFO | RESIP:TRANSACTION | TuSelector.cxx:71 | Send to TU: TU: CALL-SESSION(8) size=0 
07-31 16:29:55.335  4076  5081 I reSIProcate: 
07-31 16:29:55.335  4076  5081 I reSIProcate: SipResp: 180 tid=935e2afa889bdcad cseq=1 INVITE contact=xxxx@10.56.68.219:5070 / 1 from(wire)
07-31 16:29:55.336  4076  5081 D StackIF : readMessage: messageType 2 tid 0 pduLength 920
07-31 16:29:55.336  4076  5081 D SECIMSJ[0]: [UNSL]< NOTIFY_SIP_MESSAGE
07-31 16:29:55.336  4076  5081 D StackIF[0]: processNotify: id NOTIFY_SIP_MESSAGE
07-31 16:29:55.340  4076  5081 D SIPMSG[0]: [<--] SIP/2.0 180 Ringing [CSeq: 1 INVITE]
07-31 16:29:55.340  4076  4896 D ResipRawSipHandler: handleMessage: event: 100
07-31 16:29:55.340  4076  5082 D OpenApiServiceModule: handleMessage: what 100
07-31 16:29:55.341  4076  4896 D ResipVolteHandler: handleMessage: evt 114
07-31 16:29:55.341  4076  5081 D CpAudioEngineClient: SAE_NotiInfo: SAE_NotiInfo string: 16:29:55.341<180 Ringing:1 INVITE
07-31 16:29:55.341  4076  5081 D VoIpEngineProxy: NotiInfo:Sending IPC_IMS_INFO Noti

这样有用吗？

【问题讨论】：

    标签： android android-activity sip gsm


    【解决方案1】：

    现在在 Android R 中，我们拥有 public api 的权限。

    READ_PRECISE_PHONE_STATE

    允许只读访问精确的电话状态。允许读取有关特殊用途应用程序（例如拨号器、运营商应用程序或 ims 应用程序）的电话状态的详细信息。

    也许你现在可以用它来做精确的通话状态，我已经在自定义Android系统中得到了精确的通话状态。

    【讨论】：

    • 那真是太好了。感谢您的更新，伙计！我会牢记这一点，并会在我遇到它时进行调查。
    【解决方案2】：

    您在上面看到的是一个 VoLTE 呼叫，其中 A 方发送 SIP 邀请消息。这会在他按下拨号按钮后立即发生。 180 Ringing 表示 B 方开始响铃，因此您也可以将此视为回铃音开始的时刻。 因为 VoLTE 很简单，但我也想知道如何在 CS 呼叫中找到它。

    【讨论】：

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