Event listeners overall for all views in a ViewNavigatorApplication

Hello

As the subject says, I have a ViewNavigatorApplication and I'm trying to set up a 'global' event listener for all views. Which I am able to do, however I have problems...

In my first review, I attribute this listening port:

NativeApplication.nativeApplication.addEventListener(KeyboardEvent.KEY_DOWN, handleKeys);

And I also have this feature:

public void handleKeys(event:KeyboardEvent):void {}

If (event.keyCode == Keyboard.MENU) {}

trace '(menu press');

navigator.pushView (MainMenuView);

}

}

It works very well from the first sight. But when I change the view, I get an exception on pushView (navigator is null). I think I understand why, so what's the best practice for something like this? How can I have access to the browser component spark of this function when it is called from a different view? Or is there a better way to go about this?

Thank you!

Try to put the code in the main mxml:

http://ns.Adobe.com/MXML/2009.

xmlns:s = "library://ns.adobe.com/flex/spark".

xmlns:MX = "library://ns.adobe.com/flex/mx".

firstView = 'Home'

applicationComplete = "init ()" > "

private function init (): void {}

this.addEventListener (KeyboardEvent.KEY_DOWN, handleKeys);

}

private void handleKeys(event:KeyboardEvent):void {}

Tags: Flex

Similar Questions

  • Is there a way to clear all event listeners, to stop all the video clips, etc.?

    Is there a syntax for that?

    I have a movie that has 15 images. Each image has integrated video clips in video clips, tons of entertainment and event listeners. None is needed except when they are on the scene, on the frame. However, the animations continue even when the frame is left.

    For example, I have a framework that shows a rendered animation dynamically the leaves that fall from the tree. When the frame is left, the leaves continue to decline.

    There are many cases of this kind of thing happens.


    Ideally, I'd like to just be able to erase everything when a new image is loaded, since no animations or postponed event from one image to the other listeners.


    Is it possible to do it without the thousands of lines of code it would take to manually remove all single animation and event listener and sounds, etc., of the scene?

    Thank you very much!

    Amber

    You must do it manually.

    or, you can convert each image into a swf file.  load each swf when necessary and, if you're publishing to fp 10 +, you can apply unloadAndStop() to kill all the flows in the SWF loaded and ready these assets to gc.

  • callback method vs event listeners

    I'm developing a game in AS 3 with the MVC pattern. In my document class, I created around 15 event listeners to refresh the view of the game.

    My question is that event listeners can I use function call back?.

    I tested the sample file by replacing the addeventlisteners with the callback function. It works very well.

    I think that compared to eventlisteners, call will be back took less memory only ().

    Any suggestion please?

    Thanks in advance

    Callback functions are more efficient. Event listeners allow a greater degree of decoupling in some cases, because you don't need often to know where the thing is that you're listening and the thing to send the event has no need to know or care that if everyone is to listen. And as soon as you need more of a thing to listen to, reminders become more complex (see AS3 signals).

    With callbacks or event listeners, keep to are you the spirit given a reference to the purpose of listening to the sender object. Make sure you clean all upward when the object that listens is no longer in use, or you can end up with leaks memory.

  • Creation of all-day event that works for OS 4.2.1 4.5 device

    I am trying to create all day calendar events using the following code snippet:

            protected void insertOneIntoCalendar(EventList el, DateField thisField) {
    
                    if (el == null) {                        return;                }
    
                    BlackBerryEvent bbe = (BlackBerryEvent) el.createEvent();
    
                    if (bbe == null) {                        return;                }
    
                    //                bbe.addString(Event.SUMMARY, 0, thisField.getLabel().substring(0, thisField.getLabel().length() - 1));
    
                    //                bbe.addString(Event.NOTE, 0, thisField.getLabel() + " " + thisField.toString());
    
                    bbe.addDate(Event.START, 0, thisField.getDate() + ltz.getRawOffset());                bbe.addDate(Event.END, 0, thisField.getDate() + ltz.getRawOffset());
    
                    // Checks the Event List to determine if the ALLDAY field is supported                if(el.isSupportedField(BlackBerryEvent.ALLDAY)) {
    
                            // Checks the event to determine if ALLDAY attribute as already be set                        if (bbe.countValues(BlackBerryEvent.ALLDAY) > 0) {                                bbe.setBoolean(BlackBerryEvent.ALLDAY,0,Event.ATTR_NONE,true);                        } else {                                bbe.addBoolean(BlackBerryEvent.ALLDAY,Event.ATTR_NONE,true);                        }                } else {                        System.out.println("*** ALLDAY not supported");                }
    
                    // Checks the Event List to determine if the FB_FREE field is supported                if(el.isSupportedField(BlackBerryEvent.FREE_BUSY)) {                        if (bbe.countValues(BlackBerryEvent.FREE_BUSY) > 0) {                                bbe.setInt(BlackBerryEvent.FREE_BUSY, 0, Event.ATTR_NONE, BlackBerryEvent.FB_FREE);                        } else {                                bbe.addInt(BlackBerryEvent.FREE_BUSY, Event.ATTR_NONE, BlackBerryEvent.FB_FREE);                        }                } else {                        System.out.println("*** FB_FREE not supported");                }
    
                    try {                        bbe.commit();                } catch (PIMException pe) {                        System.out.println("*** Could not commit event");                }        }
    

    Including this code is compiled under JDE 4.2.1

    Run the application on a device running 4.7 (on a 9630), it will generate events throughout the day that are visible in all views of the calendar (works as expected for me).

    Run the application on a device running 4.5 or earlier (as 4.2.1) it will generate all day events which are visible in the view of the order of the day, visible temporarily week view (but if you scroll far they 'disappear') and never visible in the day view.

    Can someone comment on why this code does not work with the OS 4.5 and earlier versions?  All the assumptions have been broken in the code?  Do the specific dates and times assigned at the BEGINNING and END of question even though I'm this assigning an ALLDAY event?

    Thanks for any help.

    By experimentation, the apparent solution must normalize dates at midnight and check the date of the end one day later, as follows:

                    Calendar startCal = Calendar.getInstance(ltz);                startCal.setTime(new Date(thisField.getDate()));                startCal.set(Calendar.HOUR_OF_DAY, 0);                startCal.set(Calendar.MINUTE, 0);                startCal.set(Calendar.SECOND, 0);                startCal.set(Calendar.MILLISECOND, 0);
    
                    bbe.addDate(Event.START, 0, startCal.getTime().getTime());//              bbe.addDate(Event.START, 0, thisField.getDate() + ltz.getRawOffset());
    
                    Calendar endCal = Calendar.getInstance(ltz);                endCal.setTime(new Date(thisField.getDate()));                endCal.set(Calendar.DAY_OF_MONTH,endCal.get(Calendar.DAY_OF_MONTH) + 1);                endCal.set(Calendar.HOUR_OF_DAY, 0);                endCal.set(Calendar.MINUTE, 0);                endCal.set(Calendar.SECOND, 0);                endCal.set(Calendar.MILLISECOND, 0);
    
                    bbe.addDate(Event.END, 0, endCal.getTime().getTime());//              bbe.addDate(Event.END, 0, thisField.getDate() + ltz.getRawOffset());
    
  • Security event log getting the message "local computer maybe not the files of the necessary registry information or message DLL to display messages from a remote computer" for all entries. System and application logs do not receive messages

    PC is Windows XP.  The server is Windows 2000.  I have administrative rights on both machines.

    On getting PC security event log do message "local computer, maybe not the files of the necessary registry information or message DLL to display messages from a remote computer" for all entries.  System and application logs do not receive messages

    Hi carmol,.

    Your question of Windows is more complex than what is generally answered in the Microsoft Answers forums. It is better suited to the audience on TechNet forum.

    Please post your question in the Sub forum. Link: http://social.technet.microsoft.com/Forums/en-us/winserverManagement/threads

    With regard to:

    Samhrutha G S - Microsoft technical support.

    Visit our Microsoft answers feedback Forum and let us know what you think.

  • When I open a folder with pictures an icon shows for all content, it allows to view the actual image

    When I open a folder with pictures an icon shows for all content, it allows to view the actual image

    Button start, in the search box, type folder options... Enter... click on view tab... turn off always show icons, never thumbnails... OK when finished.

  • settings for all PDB files in a view

    Hello

    Is it possible to see values for all files PDB and the CBD in a point of view? v$ parameters, v parameter $2 and system_v$ list only the settings of the current container even if I am connected to root$ CBD.

    I have it. It was just a bad join (using con_id = 1 for containers $ v but con_id = 0 for the gv$ system_parameters)

  • Even if I put a null componet and remove parent... again for important to remove event listeners?

    I'm confused about something. My Essential Action Script book mentions that you should really remove all registry event listeners when you use is no longer the component when it is defined. It applies even if its parent container is removed and you set the null object? The garbage collector should not take care to destroy the event listener registered as well since it was registered in the component that you have set to null?

    When you set a component to null, what you are defining this particular reference to null, is no no not the object itself null. The event listener maintains a reference to the component, and given that the number of references so that the object is greater than zero, it is not the garbage collector.

    You can work around this problem by setting the useWeakReference flag in the call addEventListener() to true. Be careful with this, however. If you use a weak reference, and do not remove the event listener, you can always react to events lifted between the time when it is removed and when he is recovered by garbage collected. It is generally safe, but if there are events that are triggered by a timer, that could be a problem.

  • Remove all event listeners

    If you have several running events listeners, is there a way to delete all at once rather than one at a time?

    Thank you

    Jeff

    Towards the end of the article below is an approach that someone has used a picture involving:

    http://www.almogdesign.net/blog/ActionScript-3-event-listeners-tips-tricks/

  • How to set an initial view for all documents

    I use Adobe Acrobat 9 Pro.  I would like to first full page for all my documents. I know that I can specify the initial view of a document (File - Preferences - view initial - magnification - Fit Page) but I want to Adobe Acrobat 9 Pro to open any document in Fit Page view initial no matter how it has been specified in the file.

    I can't find a setting that will allow me to do.  Is there a way to do this?

    You can not force it to all PDF documents. You set your app "-online-online Page view editing preferences" settings, to behave as you want to a file PDF who do not have an initial display assigns a different parameter of "Default". This is done because Adobe thinks that the author of the PDF knows better.

  • How to search for a keyword in all views in a database?

    Hi all:

    I'm trying to search for a keyword in all views in a database. Can someone share me a query that I can reuse?

    Kind regards

    BMP

    Published by: BMP on January 8, 2010 14:55

    Select owner, name from dba_dependencies where referenced_link_name = 'XXX ';

    Or something like: -.

    Select view_name, dba_views text where text like 'XXX % ';

  • Removing event listeners - are they need all the time

    My goal is to increase the performance of my project, so I would like to know if it's always a good idea to remove event listeners. Specifically, let's say I have a movie with several scenes and several frames in these scenes. Each image has an event listener:

    Example:

    Scene 1

    Image 1 (EventListener)

    Frame 2 (EventListener)

    Frame 3 (EventListener)

    Framework 4 (EventListener)

    Scene 2

    Image 1 (EventListener)

    Frame 2 (EventListener)

    Frame 3 (EventListener)

    Framework 4 (EventListener)

    Questions:

    1. Flash continues to listen to an event in the scene 1/frame 1 when the playhead on stage 1 / 2 frame?
    2. Or Flash just listening events when the playhead is in a particular frame only?
    3. Should I remove the event listener once I leave a specific frame (should there be event listeners remove on each image)?

    You must remove event if listeners is no longer necessary.

    scenes do not yet exist in your published swf file.  they exist only in the ide to help you organize your project, but the more advanced flash users avoid using scenes because they do nothing useful, once you get a deeper understanding of flash.

    so, it makes no difference what the read head scene is because the flash player doesn't know which scene is that.  those who are righteous (marked) frames on scenario main and each scene begins with a keyframe void (unless and until you put something in that keyframe).

  • Global events and global event listeners does not work!

    I don't know who to ask if I have questions about knowledge base articles so I'll post here.

    I want to push the alert as how dialog box integrated calendar alerts to users. I understand that I need to use the globalevents and listeners, so I studied it in the knowledge base article below:

    http://supportforums.BlackBerry.com/T5/Java-development/global-events-and-global-event-listeners/TA-...

    However, when I run the code, it does nothing. The way it is set up, it should display messages ("received event, sending accused of receipt and acknowledgement received"), but nothing happens on my Simulator, once I have 'fire' of the global event. Help, please!

    No problem. We were all there at one point.

    Each of these files has a main method that is your entry point to the application. Since everyone has one, they all have two need to have their own projects.

    For example, to create a new project for each of these files in Eclipse (or JDE; Eclipse preferred) and drop the code in., and then run the two projects on the Simulator.

    Once both applications on the sim card, you can then view the interaction between the two applications.

  • my pc CPU running at 100% for all the programs I opened / what is the problem and how to solve?

    my pc CPU fan runs very strongly & the processor running at 100% for all the programs I opened. DO NOT KNOW IF IT IS A VIRUS IN THE PC WAS WORKING FINE A FEW DAYS AGO. How can I solve this issue?

    Hello

    You did changes to the computer before this problem?

    Step 1: Check if the problem persists in the clean boot state.

    From your computer by using a minimal set of drivers and startup programs so that you can determine if a background program is interfering with your game or program. This type of boot is known as a "clean boot".

    Reference:
    How to configure Windows XP to start in a "clean boot" State
    http://support.Microsoft.com/kb/310353

    When you are finished troubleshooting, follow these steps to reset the computer to start as usual:

    1. click on start and then click Run.
    2. type msconfig and click OK.

    The System Configuration Utility dialog box appears.

    3. click on the tab general, click Normal Startup - load all services and device drivers and then click OK.
    4. When prompted, click on restart to restart the computer.

    Step 2: Also, look for error messages in the event viewer. If you find error messages after return the exact error message so that we can help you better.

    Reference:
    Using the event viewer
    http://www.Microsoft.com/resources/documentation/Windows/XP/all/proddocs/en-us/snap_event_viewer.mspx?mfr=true
    Understanding of event viewer
    http://www.Microsoft.com/resources/documentation/Windows/XP/all/proddocs/en-us/event_overview_01.mspx?mfr=true
    Procedure to view and manage event logs in Event Viewer in Windows XP
    http://support.Microsoft.com/kb/308427

    I would also refer the below article which may be useful.

    The CPU utilization reaches 100 percent when you run programs after you install Windows XP Service Pack 2
    http://support.Microsoft.com/kb/890582

  • Event listeners generate errors while the modal windows are shown.

    Hi all

    I have an interface in ui script that relies on headphones for events initialized as follows:

    var button = palette.add ('image', rect);
    button.onDraw = buttonDraw;
    button.addEventListener ('mouseover', onMouse, false);
    button.addEventListener (onMouse, 'mouseout/mouseouthandler()', false);
    button.addEventListener ("mousedown", onMouse, false);
    button.addEventListener ("mouseup", onMouse, false ");

    I need these events if I change images (false buttons) when the user moves the mouse over them or click on one of them. Everything works as it should, until I decided to give something back. Although made in After Effects, a window or something is open somewhere and it makes all the unnecessary scripts, they do not meet the entry to any user, and it is very good for me. It works the same for all of the scripts that I tested.

    The real problem is with event listeners. The scripts that use will generate them a substantive error if no listener is enabled. And when rendering finished, AE will display a pop-up allowing you to know these errors. Also the interface script stops turning completely until you close open again.

    The error message is:

    "Cannot run a script so that a modal dialog box is waiting for answer".

    I thought to replace all the headphones by the other type of reminder like 'onClick', but it seems that there is no work around to "mouseover" or "mouseout/mouseouthandler()".

    It is a real problem for my user interface, as if the user has my Panel anchored somewhere in the interface and simply move the mouse on one of the buttons, it will end with the error at the end to make it. There are also I can't do anything to avoid the listeners to run, because once the script is loaded, we lose all control of what goes with it, no way to temporarily remove listeners.

    Any ideas on how to solve this problem?

    I found a solution to my problem.

    I had to remove the listenerer of the 'mouseout/mouseouthandler()' event when my custom onDraw function has been executed as a result of the actual mouse out (in other words drawing my picture in the iddle version). Then I just reinstall the event "mouseout/mouseouthandler()" at the "mouseover" event is triggered.

    I also tried to remove the "mouseout/mouseouthandler()" in my function onMouseOut listener, but it did not work very well, the only way was to remove it in the custom onDraw.

    Another thing, I discovered, is that the "mouseout/mouseouthandler()" event is actually fired 2 times... every time! That's probably a bug.

    I'll mark this as answered even if it's more as a workaround that dirty a real difficulty. I think it's a bug in After Effects (at least).

    UQg about your question, do you have a thread for it? Otherwise, you need to create one, I also have this problem and I'll look into it.

Maybe you are looking for

  • IMovie: video inside images

    Before in my Ipad, it was possible to put the video inside the images in the movie, but now I don't know how to do Mac. Help. Thank you

  • Migrate the site and master passwords and logins for Firefox to light

    To expedite my USB mobile browser, I want Firefox v.30 a light v.30.Only now I noticed I still signons3.txt instead of key4.db and cert8.db instead of cert9.db in the Firefox profile. https://support.Mozilla.org/en-us/KB/recovering%20important%20data

  • HP laptop 11 Stream: windows 10

    I want to know, when Windows 10 comes out July 29 I will be able to update on this unit. I have 2 GB of RAM. So should I increase my RAM 3 GB for windows 10 to work properly. Thank you Lamont

  • order of the opposite chain

    Hi all I first want to reverse the order of the string first e.g. the string is 9200 FDE7 I want to change it to E7FD 0092. further, I want to change this string of hexadecimal value to a decimal string...... I implemented them in my vi... .well the

  • MTS file extension

    I use Vista 64 and Windows Media 11.    Cannot display all of the MTS files with this combination, but can view the MTS files and video on a Windows 7/Windows Media 12 combination.   Is it possible that I can see these films/videos on my Vista/WMP 11