Event listeners

Similar Questions

• 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.

• 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.

• 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.

• How to remove base class event listeners

  Guys, I have a base class (he is a clip) in which I added event listeners:

  addEventListener (MouseEvent.MOUSE_OVER, mouseOverHandler);

  OK, it works and everything is beautiful.

  But I have a subclass that clip in class 'regular ': as3

  class DifferentClass extends MyMovieClip

  {

  }

  you get the gist.

  Now, I want in my DifferentClass also have the MOUSE_OVER event, but without never to raise the base class event.

  No one knows how to do?

  Thank you.

  override protected function mouseOverHandler(e:MouseEvent):void {}

  do not call super. Instead, do your own thing custom

  }

  No need to call getQualifiedClassName. This is what has protected methods are for!

  Note You can also listen to a higher priority and the preventImmediatePropogation() on the event if for any reason any substitution does not work for you.

• 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).

• Problem of event listeners

  I have a problem with the firing of the event listeners.  I have 4 functions (see below). Function f1 is triggered when the user clicks button1 and function f3 is triggered when it is clicked on button3.  F1 calls getFileOperation (a Web service operation) and must call function f2, while the f3 function must call the function f4.

  the function f1 (event: MouseEvent): void
  {
  trace ("f1 triggered");
  getFileOperation.addEventListener (ResultEvent.RESULT, f2);
  }

  the function f2 (ev:ResultEvent): void {}
  trace ("f2 triggered");

  }

  the f3 function (event: MouseEvent): void
  {
  trace ("f3 triggered");
  getFileOperation.addEventListener (ResultEvent.RESULT, f4);
  }

  function f4(e:ResultEvent):void {}
  trace ("f4 triggered");

  }

  However, the output being given when I press followed button2 button1 is:

  F1 has triggered
  F2 triggered
  F3 triggered
  F2 triggered / / / repeated!
  F4 triggered

  Similarly, the output being given when I press button2 followed of button1 is:

  F3 triggered
  F4 triggered
  F1 has triggered
  F4 triggered / / / repeated!
  F2 triggered

  Why is f2 triggers again in the first case and f4 in the second case? How can I go about it to avoid this repetition.  Any help would be appreciated... Thank you!!

  Remove the first receiver before adding the second listening port if you do not want to call two functions of an event.

• Delete several event listeners.

  Hello

  In some cases, it is important to eliminate several event listeners in order to reduce the time CPU.

  Below is the code btn [i] .removeEventListener (event.type, arguments.callee); to //x doesn't seem to work.

  var btn:Array = (mc1, mc2);

  
  

  main.addEventListener (MouseEvent.CLICK, click);

  MC1.addEventListener (MouseEvent.Click, One);

  MC2.addEventListener (MouseEvent.Click, Two);

  
  

  function Click(event:MouseEvent):void

  {

  for (var i: uint = 0; i < btn.length; i ++)

       {

  event.currentTarget.removeEventListener (event.type, arguments.callee);

  x [i] BTN .removeEventListener (event.type, arguments.callee);

  trace(BTN[i]); [object MovieClip] twice, including mc1 and mc2 respectively.

       }

  }

  function one(event:MouseEvent):void

  {

  trace ("mc1", event.currentTarget + event.type); [object MovieClip] mc1 click.

  }

  function two(event:MouseEvent):void

  {

  trace ("mc2", event.currentTarget + event.type); mc2 click [object MovieClip].

  }

  Note that if we put code event.currentTarget.removeEventListener (event.type, arguments.callee), inside the Click function, it removes the listener very well.

  The problem may be with the table, but the trace in the loop of return [object MovieClip] twice.

  No, except if you know or can derive listener functions references:

  var btn:Array = (mc1, mc2);

  var f: Array = [1, 2]

  
  

  main.addEventListener (MouseEvent.CLICK, click);

  MC1.addEventListener (MouseEvent.Click, One);

  MC2.addEventListener (MouseEvent.Click, Two);

  
  

  function Click(event:MouseEvent):void

  {

  for (var i: uint = 0; i

  {

  event.currentTarget.removeEventListener (event.type, arguments.callee);

  BTN [i] .removeEventListener (event.type, f [i]);

  trace(BTN[i]); [object MovieClip] twice, including mc1 and mc2 respectively.

  }

  }

  function one(event:MouseEvent):void

  {

  trace ("mc1", event.currentTarget + event.type); [object MovieClip] mc1 click.

  }

  function two(event:MouseEvent):void

  {

  trace ("mc2", event.currentTarget + event.type); mc2 click [object MovieClip].

  }

• 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.

• removeChild removes the object event listeners?

  Hello

  If you dynamically create a parent movieclip, dynamically add a selector of color of each element and add an event listener for each color picker, a removeChild on the parent movieClip removes event listeners belonging to one of her children?

  Thank you

  Shaun

  It should not.  You only delete the object from the display list, not existence.  It's still there, you don't see it, but you can bring it to life too fast that reuse addChild.

• New in AS3: stupid question about event listeners...

  Hi all

  I am a newbie in Flash and have a question about event listeners. I have a site I'm developing with a movie clip navigation which is composed of several buttons. What is the right way to write the event listener?

  Here's a sample of what I have:

  I have a clip called 'buttons_mc' that contains the symbols of individual button with various names such as "btn_history". So far, I don't have an instance name for the clip of the film itself.

  My event listener:

  btn_history.addEventListener (MouseEvent.CLICK, history);

  I have to put something before the "btn_history" which refers to the video? I get this error message:

  1120: access of undefined property btn_history.

  Thank you!!!

  Julia

  Yes, it is preferable to have at least one layer dedicated to actionscript.  I often use a couple... one for code shared (functions and variables) and a level of the frame code (stop(), etc.).

  The code must be in a scenario where the button is directly accessible.  If your button is accessible in frame 1, which means that it does not animate in place such that it is not really intended to be used until you get somewhere near the bottom of the timeline, then you can target the button of the timeline that holds the buttons_mc movieclip.  So as I described earlier, if you give this movieclip an instance name of "buttons", and then to assign a code to the button on the inside you should use...

  Buttons.btn_history.addEventListener (MouseEvent.CLICK, history);

  But if the button exists somewhere down the timeline inside the buttons_mc due to the animation of the button, which means that there is more than one key image for the button, then you must place the code that you have initially shown in the last keyframe to the bottom of the timeline where he set the button in place.

  .

• 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/

• To access the event listeners in the custom class

  I am a construction and film using the classes customized for the first time. I built a custom class and bound a clip in my film for her so that the color of the text in the video will change when he is overthrown. I have 10 occurrences of this clip in the film, so it saves me a lot of code. Instead of writing 10 to ROLL_OVER event listeners and 10 more for ROLL_OUT (as I have done in the past), one for each instance of the clip on the scene, I wrote now event listeners and the corresponding functions in the custom class. So far, so good, everything works fine. When I ride above and outside on one of the 10 instances of the clip on the stage it changes color. See code attached.
  
  However, according to what is happening in the film, that I sometimes need to turn off the headphones of events on one or more video clips. So, I wrote the code in the movie itself to remove event listeners of the instance of the clip that I need to disable. See code attached.
  
  But, alas, it does not work.
  
  I get this error:
  ReferenceError: Error #1065: Variable turnWhite is not defined.
  
  I thought that by the 'public' method in the custom class, I would be able to call from the film, but I do not. Any help or advice would be greatly appreciated. Thank you very much.

  Ned, thanks for your help. I was able to understand. Your code has been helpful, and I've used something similar to what you suggested.

• Make several event listeners to perform the same function

  I have a block of code. I have attached two different event listeners, one on the scene and the other to a button. I want him out when the event triggers, the event handler should run. Look at the code. Thank you.

  Try this...