Question of enforcement without head

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• App without head: how to check the status

  1. I read this on the BB site:

  Criticism	Process that must be running at all times (for example, system processes)
  In the foreground	Processes that are running in the foreground
  Background	Processes that run in the background
  Stop	Process involved in RAM without running

  The question is can we write the code to check the States of the app to trigger certain activities?

  I also want to know the other possible States of the life cycle such as: "application started", "closed app"...

  A problem critical of the app without head is memory management, and we can only until BB have a better explanation on the life cycle of the app without a head.

  2. for an application in the short-term, event after 20 years, the app is still listed on memory and CPU usage. That seems abnormal, because I guess that after 20 years, the application will be stopped and not be able to use the memory and CPU more.

  Can someone explain?

  Thank you very much!

  Would you like to take a look at this app, I wrote that has a component without head and uses QLocalSocket to communicate between the headless and the (https://github.com/blackberry/Cascades-Community-Samples/tree/master/wakemebybeacon) user interface process. There is also a blog explaining how it works here: http://devblog.blackberry.com/2014/07/wake-my-beacon/.

  You can detect changes in status of process on the part without head like this (https://github.com/blackberry/Cascades-Community-Samples/blob/master/wakemebybeacon/WakeMeByBeaconSe...) and manipulate them like this (https://github.com/blackberry/Cascades-Community-Samples/blob/master/wakemebybeacon/WakeMeByBeaconSe...).

  When a component without a head (process) is distributed will be passable for 20 seconds, after which it is moved to a queue where it receives no processor, but can be awakened (marked as executable) of certain classes of events. While stopped the headless process always retains a memory footprint, but is not available.

• Left without head does not start from the phone.

  Hello

  I have a problem with the part without a head.

  When I try to launch the app to Eclips, the app will be charged for phone and rotate the UI and parts without a head.

  Now if I restart the phone, headless part does not start even when I open the UI part,

  The headless part is to call the block function.

  Any idea will be very appreciated!

  Thank you!

  Your HL will start automatically in these two scenarios:
  (1) the application is installed on the device (there is no front)
  (2) the phone is restarted-> which is the magical part where your file bar - descriptor.xml is to record your target without head to call when the OS up bb.action.system.STARTED action.

  If you want your HL to be launched at the start of the user interface, you must manually call.

  Look here for an example of coding:
  https://github.com/RodgerLeblanc/HeadlessLight/BLOB/master/HeadlessLight/src/applicationui.cpp#L34-L...

• Memory, databases and applications without head

  I've been struggling with this problem for some time now so let's go.

  As many of you know headless apps allowances of bunch of limit of 3 MB, which is fine, except when using Qt/Cascades objects that don't care much to consumption of memory, two examples are QNetwork and QtSql, who will blow easily your budget of memory in a single operation.

  I have simple ' SELECT * from Table' queries that consume more than 6MB, which then effectively disables the component without a head. More precise, I do the query the heap more than it consumes. So I tried libsqlite3, results were similar. It was however the promise to provide a chunck of mmap would or memory of static array for substitute of the bunch, but I can not:

  sqlite3_config(SQLITE_CONFIG_HEAP,...)

  to work correctly, it returns an error (1) every time.

  Unfortunately, I'm at the point where it seems that a component without head who uses SQL can be impossible with the current memory limit. Can anyone offer a solution to the use of SQL with headless while maintaining a service that runs reliably?

  -Are there when even to provide a static heap memory for QtSql use?

  -Are there a way to limit the memory used by QtSql?

  Thank you!

  EI

  The solution was to restructure my database, as awkward as this has been significantly reduced the memory required for the information necessary to satisfy the query of data in the buffer. In others, rather than have a huge database of the 8 column I broke it into several two databases colum - when the part without head wants just a little information is exactly what he will get so surprise elimination memory usage spikes.

  The problem still exists: as the database develops for a query memory requirements. Has no way to control the maximum limits memory use for QtSql complicating an app without elastic, even theoretically impossible to write head.

  EI

• E-mail without head & BES12 events

  Hello

  I'm working on an application that must manage the incoming e-mails / outgoing. Point of entry without head added with bb.action.email.RECEIVED and bb.action.email.SENT filters. Everything works fine in userspace, but in work is not space.

  1. is it possible to manage email triggers in the workspace? Are there special settings/permission to do this?

  2 if not, is it possible to archive the same goal with the MessageService events in long app without a head?

  Thank you

  Anton

  I was able to reproduce the same behavior you see, e-mail headless triggers do not shoot when a device is turned on in the mode single workspace.  They do not work in the scope of the work and personal perimeter when a device is turned on in BlackBerry Balance mode.

  I have logged a bug for this with our in-house development team and reflected in the Issue Tracker here: Headless email triggers don't trigger mode single workspace

  You will need to use the solution using the messaging APIs until this problem is corrected.

• App without head

  Hello guys what changes do I need to change in the CPC or hpp files to convert my simple app in app without head
  I have already added

  LIBS += -lbbplatform
  

  in my .pro file and take a permission to Run in backround (_sys_run_headless) & (sys_headless_nonstop) also... bar - descriptor.xml

  I suggest that you either look at the example app without head or just start with that and add your own code.

• Using C++ in QML classes in app without head: refers to 'bb::device:VibrationController:staticMetaObject' the undefined

  Hi, I've been weeks of work on the BB and had a lot of problems. Some of them have been resolved, some were not without the support of the forum.

  Now I have a great difficulty that I can't find answer by Googling.

  I am grateful to some body can help.

  Here's a simple case that make the big problem for me:

  1. create an app without head with Momentics. 2 project will be generated HeadlessApp and HeadlessAppService.

  Without modification, this code works well.

  2. I'm link below to use VibrationController in HeadlessAppService: https://developer.blackberry.com/native/documentation/dev/integrating_cpp_qml/index.html#usingcclass...

  below the code has been added:

  -Add codes below to main.cpp HeadlessAppService

  #include 
  using namespace bb::device;
  

  then add qmlRegisterType as below

  Q_DECL_EXPORT int main(int argc, char **argv)
  {
  
     Application app(argc, argv);
  
     qmlRegisterType("bb.vibrationController", 1, 0, "VibrationController");
     ApplicationUI appui;
     return Application::exec();
  }
  

  3. to confirm the new code, I just right click on the project and select build project.

  Bang! I got several error I don't understand. (red lines are errors)

  08:44:30 **** Incremental Build of configuration Device-Debug for project headlessTest ****
  make -j4 Device-Debug
  make -C .//translations -f Makefile update
  make[1]: Entering directory 'D:/BB-dev/momentics-workspace/headlessTest/translations'
  C:/bbndk/host_10_3_1_12/win32/x86/usr/bin/lupdate headlessTest.pro
  Updating 'headlessTest.ts'...
      Found 2 source text(s) (0 new and 2 already existing)
  make[1]: Leaving directory 'D:/BB-dev/momentics-workspace/headlessTest/translations'
  make -C .//translations -f Makefile release
  make[1]: Entering directory 'D:/BB-dev/momentics-workspace/headlessTest/translations'
  C:/bbndk/host_10_3_1_12/win32/x86/usr/bin/lrelease headlessTest.pro
  Updating 'D:/BB-dev/momentics-workspace/headlessTest/translations/headlessTest.qm'...
      Generated 0 translation(s) (0 finished and 0 unfinished)
      Ignored 2 untranslated source text(s)
  make[1]: Leaving directory 'D:/BB-dev/momentics-workspace/headlessTest/translations'
  make -C ./arm -f Makefile debug
  make[1]: Entering directory 'D:/BB-dev/momentics-workspace/headlessTest/arm'
  make -f Makefile.Debug
  make[2]: Entering directory 'D:/BB-dev/momentics-workspace/headlessTest/arm'
  qcc -Vgcc_ntoarmv7le -lang-c++ -Wl,-rpath-link,C:/bbndk/target_10_3_1_995/qnx6/armle-v7/lib -Wl,-rpath-link,C:/bbndk/target_10_3_1_995/qnx6/armle-v7/usr/lib -Wl,-rpath-link,C:/bbndk/target_10_3_1_995/qnx6/armle-v7/usr/lib/qt4/lib -Wl,-rpath-link,C:/bbndk/target_10_3_1_995/qnx6/armle-v7/usr/lib/qt4/lib -o o.le-v7-g/headlessTest o.le-v7-g/.obj/applicationui.o o.le-v7-g/.obj/main.o o.le-v7-g/.obj/moc_applicationui.o    -LC:/bbndk/target_10_3_1_995/qnx6/armle-v7/usr/lib/bb1 -LC:/bbndk/target_10_3_1_995/qnx6/armle-v7/lib -LC:/bbndk/target_10_3_1_995/qnx6/armle-v7/usr/lib -LC:/bbndk/target_10_3_1_995/qnx6/armle-v7/usr/lib/qt4/lib -LC:/bbndk/target_10_3_1_995/qnx6//usr/lib/qt4/lib -lbb -lbbsystem -lbbcascades -lQtDeclarative -lQtScript -lQtSvg -lQtSql -lsqlite3 -lz -lQtXmlPatterns -lQtGui -lQtNetwork -lsocket -lQtCore -lm -lbps
  o.le-v7-g/.obj/main.o: In function `int qmlRegisterType(char const*, int, int, char const*)':
  c:/bbndk/target_10_3_1_995/qnx6/usr/include/qt4/QtDeclarative/qdeclarative.h:191: undefined reference to `bb::device::VibrationController::staticMetaObject'
  o.le-v7-g/.obj/main.o: In function `QDeclarativeElement':
  c:/bbndk/target_10_3_1_995/qnx6/usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87: undefined reference to `bb::device::VibrationController::VibrationController(QObject*)'
  o.le-v7-g/.obj/main.o:(.data.rel.ro._ZTVN19QDeclarativePrivate19QDeclarativeElementIN2bb6device19VibrationControllerEEE[_ZTVN19QDeclarativePrivate19QDeclarativeElementIN2bb6device19VibrationControllerEEE]+0x8): undefined reference to `bb::device::VibrationController::metaObject() const'
  o.le-v7-g/.obj/main.o:(.data.rel.ro._ZTVN19QDeclarativePrivate19QDeclarativeElementIN2bb6device19VibrationControllerEEE[_ZTVN19QDeclarativePrivate19QDeclarativeElementIN2bb6device19VibrationControllerEEE]+0xc): undefined reference to `bb::device::VibrationController::qt_metacast(char const*)'
  o.le-v7-g/.obj/main.o:(.data.rel.ro._ZTVN19QDeclarativePrivate19QDeclarativeElementIN2bb6device19VibrationControllerEEE[_ZTVN19QDeclarativePrivate19QDeclarativeElementIN2bb6device19VibrationControllerEEE]+0x10): undefined reference to `bb::device::VibrationController::qt_metacall(QMetaObject::Call, int, void**)'
  o.le-v7-g/.obj/main.o:(.data.rel.ro._ZTIN19QDeclarativePrivate19QDeclarativeElementIN2bb6device19VibrationControllerEEE[_ZTIN19QDeclarativePrivate19QDeclarativeElementIN2bb6device19VibrationControllerEEE]+0x8): undefined reference to `typeinfo for bb::device::VibrationController'
  o.le-v7-g/.obj/main.o: In function `~QDeclarativeElement':
  c:/bbndk/target_10_3_1_995/qnx6/usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:91: undefined reference to `bb::device::VibrationController::~VibrationController()'
  c:/bbndk/target_10_3_1_995/qnx6/usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:91: undefined reference to `bb::device::VibrationController::~VibrationController()'cc: C:/bbndk/host_10_3_1_12/win32/x86/usr/bin/ntoarm-ld caught signal 1
  Makefile.Debug:103: recipe for target 'o.le-v7-g/headlessTest' failed
  make[2]: *** [o.le-v7-g/headlessTest] Error 1make[2]: Leaving directory 'D:/BB-dev/momentics-workspace/headlessTest/arm'
  make[1]: *** [debug] Error 2
  Makefile:50: recipe for target 'debug' failed
  make: *** [Device-Debug] Error 2make[1]: Leaving directory 'D:/BB-dev/momentics-workspace/headlessTest/arm'
  mk/cs-base.mk:31: recipe for target 'Device-Debug' failed
  08:44:31 Build Finished (took 1s.47ms)
  

  I give up!

  Why adding simple code can be a problem? Please help me!

  Thank you very much!

  You must add this code into main.cpp to your HeadlessApp, not HeadlessAppService. Your spare part cannot run any UI stuff, trying to save an object any for QML is part of the things in the user interface.

  But anyway, reading your newspaper from the console, you seem to put in the right place anyway. Did you add this to your headlessTest.pro file:
  LIBS +=-lbbdevice

• WebWorks app with part without head

  I'm devolopping a webworks SDK-based application.

  I want to develop a plugin that communicate with a native service without a head.

  I used the sample of The Headless Service sample that shows how to create a long service life without a head.

  Also, I used the model of the creation of a plugin of cordova for communication between JavaScript and native part.

  2 samples of separately work fine, I have not found how to configure make them work together. I mean How to invoke the service without a head form Javascript side.

  As BlackBerry Webworks Extension Native and native headless service project have the same structure of project, I don't have how to configure my Webworks and my native project without head to communicate with each other.

  Help please?

  Hello

  WebWorks 2.1 has a «create headless» CLI command This operation generates a sample application in which the momentics project built directly in the project WebWorks. It illustrates invocation of WebWorks for headless.

  http://developer.BlackBerry.com/HTML5/documentation/v2_1/creating_a_ww_app_with_headless_app.html

• Application crash without head

  I have a headless application that consists of a user interface that displays information and a background process that manages the communication networks and raise important data notifications should be retrieved as the user needs to know.

  Looks like what they describe the background process has ended, although I'm waiting to hear if this is indeed the case, and it is not just a bug in my code.

  As I need this service running at all times to manage the network connection is a way to define the process restarts on release without requiring the user interface to get involved or restart the phone?

  You can send a message to hub or NotificationDialog in your app without head destructive code, but chances are that if the app without head has stopped working, it is due to a failure and your Shredder could never be called.

  I know a dev that used a second application without head who would conduct sporadic inspections to see if headless app 1 is running and he would invoke if it no longer exists. This solution is not for everyone, the user will install 2 apps.

  Best solution is to check your code, try to catch the dump if possible user's telephone logs, there is probably an error somewhere that gives the crash without head or your application gets terminated by the operating system when it exceeds the limit of 3 MB heap (check for memory use).

• Get a Push notification on app without head and application

  Hello

  I have included an app without a head for my current application, because I am handling becomes class PushService when push comes this application without a head. But I pushservice in running my application also to get called when comes to push, and my request for traffic not called when the push... How can I get push notifications in both without head and noraml app.

  You can take a look at the documentation
  https://developer.BlackBerry.com/native/documentation/Cascades/device_platform/headless_apps/

• Call the function in the UI part without head

  I develop some app with no head.

  When I change the code in the head part and build - launch. But nothing changes in the part without a head.

  I have another solution call the function in the UI part headless. But whatever it is called.

  Please help me solution?

  The part without head of a long walk without head application is still running in the background. It will not update until you stop the part without a head.

  To stop the game without leading the race, you have three choices:
  (1) build increment in the bar file version - descriptor.xml. This will force the part without head to stop and restart with the new code.

  (2) use the monitor of the device to manually stop your application from running. Then, new launch and your game without head will run the new code.

  3) to implement your own way without a head, like a button that would send a personalized call to headless with (say) action "com.myDomain.myAppName.SHUTDOWN" and when headless receive this invocation, operate you this line:
  BB::application::instance()-> quit()
  This will make the part without head stop, then you run and your part without head will take place the new code.

  I prefer the #3 method, but if you do, don't forget to hide this feature before releasing to the public.

• Citing the part of the user interface of the game without head in an app without head

  Hello

  I try to call my interface section user app without head of service class (part long term without a head), as shown below:

  application of BB::System:InvokeRequest;

  request.setTarget ("com.myDomain.myAppName");

  request.setAction ("com.myDomain.myAppName.START");

  InvokeTargetReply * response = m_invokeManager-> invoke (request);

  {if (Reply)}

  QObject::connect (response, SIGNAL (finished (()), this, SLOT (onInvokeResult ()));

  _invokeTargetReply = response;

  }

  else {}

  qDebug()< "failed="" to="" start="" invocation:="">

  }

  the error response is always "not objective". I double checked that the id of the target is my id app (user interface section) and that it is registered as target to call in the xml file bar

  
  application
  myAppName
  
  Icon.PNG
  
  myAppName
  

  I don't know why he keeps giving me the error response target?

  Made a typo, the Notification and NotificationDialog are part of the bb: platform.

  Here are their respective documents:
  Notification https://developer.blackberry.com/native/reference/cascades/bb__platform__notification.html#function-...

  NotificationDialog https://developer.blackberry.com/native/reference/cascades/bb__platform__notificationdialog.html#fun...

• Problem with app without head

  I have an app without very simple head with a spare part which can be summed up like this:

  int main()

  {

  While (true)

  {

  appendToLogFile();

  Sleep (5);

  }

  }

  He manages to write twice in the logfile on Simulator 10.3 after the system starts and then it dies (nothing is printed, process went from "pidin").

  Is there something I need to do to ensure that the system does not not kill us after a few seconds?

  I have the following 2 lines in bar - descriptor.xml:

  _sys_run_headless

  _sys_headless_nostop

  I can zip from the project and set up somewhere if anyone wants. It is based on the project template that Momentics puts apps headless.

  TIA.

  I did some experiments. It seems that headless apps work pretty much as advertised during the development of a device but not very well at all in the development on the Simulator.

  Use a device to develop applications without head, not the Simulator.

  Perhaps future simulators will correct the current problems.

• Problem with conversion of a normal app in app without head

  "I made an example of code where you respond to messages (email, PIN) without user intervention is possible." The application is started and when a new message is received it respond and delete the new message.

  I need the app to start as soon as the phone is started. This is why I want to convert an application without the app. But he is not able to link the API if I set them in the part without the app. The reason is that in the .pro file of the game without head cascades10 should be removed to make headless (it's just one of the requirements). I fully meet all other requirements too for example: no assets etc.

  CONFIG += qt warn_on (cascades10) deleted

  But I must add

  LIBS +=-lbbpim which gives following error.

  /usr/lib/libbbpim.so: reference to 'QSqlDatabase::rollback()' the undefined

  /usr/lib/libbbpim.so: reference to 'QDomDocument::~QDomDocument()' the undefined

  When I add cascades10 then it compiles, but now it does not entirely the requirements of the app without a head.

  If I set the code part user interface of the application without a head, then it can compile and I can run the application. But in this case when I re - turn the phone on or off the UI of the application does not work.

  I do not understand how to convert a normal app in app without a head. I have read the example and followed all the instructions.  http://developer.BlackBerry.com/native/documentation/Cascades/device_platform/headless_apps/

  But I need for email, PIM messages. "How can you do it?

  LIBS +=-lbb - lbbsystem - lbbplatform - lbbdata - lbbpim
  QT += declarative sql
  QT += xml

  He then satisfied and I can run too

• service tag and nfc without head

  Is it possible assigned to an application when a service without head bed tag nfc with specific information?

  Just to add to the response from Marc that I would be interested to know what use cases you have in mind that you think would require you to have access to an NFC tag from an application without a head.

  The nature of the NFC as a short-range radio link forced use cases to those where the end-user must take physical measures to "tap" of the handset in a NFC tag, an NFC reader, or even another NFC device. NFC use cases generally require an element of interaction with an application through the user interface - for example, it would be unacceptable and illegal to allow an application to approve a purchase of credit card contactless without verifiable consent from the user. For this reason, NFC apis and radio, are usually fully accessible only when the application is in the foreground. NFC is also tightly integrated with the framework of the call that allows the OS to launch the appropriate application in the detection of an NFC event plan so the need to use an application without a head is not necessary.