我已经为两种不同的传感器开发了应用程序。它们单独工作正常，但是当我尝试将它们组合在一起并创建两个不同的总线时，Alljoyn 给出了这个异常。
org.alljoyn.services.common.BusAlreadyExistException: The object has been set previously with a BusAttachment.
下面是我的连接源代码。谁能告诉我为什么会遇到这个问题。
private void connect()
{ org.alljoyn.bus.alljoyn.DaemonInit.PrepareDaemon(getApplicationContext());
bus = new BusAttachment("ControlPanelBrowser", BusAttachment.RemoteMessage.Receive);
bus.registerBusListener(new BusListener());
Status status = bus.registerBusObject(mControlPanelSignalInterface, Constants.SERVICE_PATH);
if (status != Status.OK) {
Log.d(TAG, "Problem while registering bus object");
}
SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
srpPassword = settings.getString(PREFS_PASSWORD, DEFAULT_SECURED_SRP_PASSWORD);
SrpAnonymousKeyListener authListener = new SrpAnonymousKeyListener(this, logger, AUTH_MECHANISMS);
Status authStatus = bus.registerAuthListener(authListener.getAuthMechanismsAsString(),
authListener, getKeyStoreFileName());
if ( authStatus != Status.OK ) {
Log.e(TAG, "Failed to register AuthListener");
}
status = bus.connect();
if (Status.OK == status){
String daemonName = Constants.DAEMON_NAME_PREFIX + ".ControlPanelBrowser.G" +
bus.getGlobalGUIDString();
int flag = BusAttachment.ALLJOYN_REQUESTNAME_FLAG_DO_NOT_QUEUE;
Status reqStatus = bus.requestName(daemonName, flag);
if (reqStatus == Status.OK) {
Status adStatus = bus.advertiseName(Constants.DAEMON_QUIET_PREFIX +
daemonName, SessionOpts.TRANSPORT_ANY);
if (adStatus != Status.OK){
bus.releaseName(daemonName);
Log.e(TAG, "Failed to advertise daemon name: '" + daemonName + "', Error: '" + status + "'");
}
else{
Log.d(TAG, "Succefully advertised daemon name: '" + daemonName + "'");
}
}
else {
Log.e(TAG, "Failed to request daemon name: '" + daemonName + "', Error: '" + status + "'");
}
}
status = bus.registerSignalHandlers(mControlPanelSignalInterface);
if (status != Status.OK) {
Log.d(TAG, "Problem while registering signal handlers");
}
// Initialize AboutService
aboutClient = AboutServiceImpl.getInstance();
aboutClient.setLogger(logger);
try {
aboutClient.startAboutClient(bus);
for (String iface : ANNOUNCE_IFACES) {
aboutClient.addAnnouncementHandler(this, new String[] {iface});
}
} catch (Exception e) {
logger.error(TAG, "Unable to start AboutService, Error: " + e.getMessage());
}
}
最佳答案
使用 registerBusObject 两次，然后你可以制作一个总线附件
关于安卓 AllJoyn : Connection with second machine gives error of BusAttachement，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35627204/