我正在尝试在呼叫开始播放回铃音时检测该呼叫的状态。我尝试了各种方法来检测此状态。以下是其中一些方法：
1. 使用 PhoneStateListener：
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这样的状态并不能给我们提供那些状态。
2. 使用READ_PRECISE_PHONE_STATE：
将该方法添加到以上相同的手机状态监听器中。
public void onPreciseCallStateChanged() {
Log.d(CallStatusPlugin.TAG, "onPreciseCallStateChanged");
}
但根据我的研究，读取精确状态需要应用程序必须是系统应用程序。
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");
}
}
}
但这并没有帮助，因为操作系统在呼出电话播放振铃音时不会改变通知。
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));
}
}
但是也没有起到任何帮助。
5. 使用反射：
我也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());
我没有得到任何类（也许我没有正确使用反射）
6. 使用InCallService：
通过用自定义拨号器替换默认拨号器（我不想使用），来获取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回调函数最终给我返回的是:
通话状态 -> 9 (STATE_CONNECTING) -> 1 (STATE_DIALING) -> 4 (STATE_ACTIVE)(当接听电话时) -> 7 (STATE_DISCONNECTING)
但是，如果拨打的号码无法连接或手机已关机等导致呼出电话出现问题时，通话状态也会变为 STATE_DIALING。因此，这意味着我们不能说DIALING状态是呼出电话开始播放摇铃音的状态。
7. 使用反射从CallManager进行操作:
(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());
}
}
}
但我得到的所有背景/前景调用和电话都是空结果：
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: []
我不确定操作系统是否正在使用CallManager。
经过2-3周的研究，我了解到：
- 隐藏的 API 可以为我们提供更深入的与操作系统的集成（但是Google 可能会在 Android P 中限制访问隐藏的 API）；
呼出电话的振铃声 == 回铃音；拨号状态 !== 播放回铃音的状态；- 但是我没有得出结论，可以确定这是获取一个呼出电话开始播放回铃音的状态的方法。
我通过读取所有操作系统日志进行调试，使用命令adb logcat '*:V'，并注意到在听到回铃声时打印了一条日志（adb logcat -b system '*:V'）：
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
我开始搜索与io stats events android和gsm connection events相关的内容，但是我无法找到获取呼出电话播放回铃声时的特定状态的任何方法。
我查看了各种Android代码以寻找一些提示：
有什么提示或方向可以让我实现这个目标吗？像GSM连接、ConnectionService、ConnectivityManager、ConnectionService或ConnectionRequest之类的东西？
Edit 1:
阅读更多的日志让我找到了SipManager，我阅读了SIP基本呼叫流程示例，我认为Android用于进行呼入或呼出电话。
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
这个有用吗？