I have an SWF loading in an SWF containing a papervision scene.
I've done it before yet problem is, I get an error - I'm not sure what the issue really is.
private function downloadSWF(url:String):void
{
trace(url);
var urlRequest:URLRequest = new URLRequest(url);
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loaderProgressEventHandler);
loader.load(urlRequest);
}
private function loaderProgressEventHandler(ev:ProgressEvent):void
{
loader.preloaderCircle.percent = ev.bytesLoaded / ev.bytesTotal;
}
When the application runs the code - I get the error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at com.dehash.pv3d.examples.physics::WowDemo()
Why am I getting this if the loading hasn't even complete yet?
Thanks in advance guys.
Edit: Try a blank child swf, see if the other one was trying access something in the parent. – Jorge
I did this, it seems, even with a simple SWF with a mouse click listener causes the Error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at simple_fla::MainTimeline/frame1()
My code for that is:
import flash.events.MouseEvent;
this.stage.addEventListener(MouseEvent.CLICK, onClick);
function onClick(ev:MouseEvent):void
{
trace("MouseClick");
}
Am I missing something blatantly obvious??
The problem is that the loaded swf starts running without it being added to the stage. So stage is null, resulting in that error.
The second example with the addedToStageEventHandler works because there stage is only referenced after the object was added to the stage, so stage is not null anymore.
A possible solution for the first error is adding the loader to the stage. That way, when the swf is loaded and starts, it already has a stage reference.
It won't even load if there's an error. You're accessing an unreferenced object on the WowDemo() class...did you instantiate correctly the class?
this seems to work inside my child SWF:
this.addEventListener(Event.ADDED_TO_STAGE, addedToStageEventHandler);
function onClick(ev:MouseEvent):void
{
trace("MouseClick");
var event:Event = new Event("END", true, false);
this.dispatchEvent(event);
}
function addedToStageEventHandler(ev:Event):void
{
this.stage.addEventListener(MouseEvent.CLICK, onClick);
}
does anyone know Why?
Related
I'm setting up a button on the first frame which when clicked will transfer the user to the 2nd frame using this code:
stop();
Btn_1.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndPlayFromFrame_2);
function fl_ClickToGoToAndPlayFromFrame_2(event:MouseEvent):void
{
gotoAndPlay(2);
}
and on the second frame, I set up a dynamic text that will perform a countdown using this code:
var myTimer:Timer = new Timer(1000,60); // every second for 60 seconds
myTimer.addEventListener(TimerEvent.TIMER, onTimer);
myTimer.addEventListener(TimerEvent.TIMER_COMPLETE, onComplete);
myTimer.start();
function onTimer(e: TimerEvent):void {
countdown_text.text = String(myTimer.repeatCount - myTimer.currentCount);
}
function onComplete(e: TimerEvent):void{
gotoAndStop(3);
}
the thing is keep getting TypeError: Error #1009 message after debugging it. I know the fault is in line 7 of the 2nd code but I have no idea what is wrong with it. Pls help!
I should see your source fla, but it is most likely related to countdown_text not being accessible in that frame. Error description is "Cannot access a property or method of a null object reference", that means it cannot find the reference which is "countdown_text".
It is very very bad practice to write AS directly in frames. Convert code into a class and assign it as a document class.
You can find Adobe documentation for document class here: https://helpx.adobe.com/animate/using/actionscript-publish-settings.html
I have this piece of code that's suppose to add a swf file (homePage.swf) inside my main file (skeleton.fla).
Code:
var mcHome:MovieClip;
var newPage:Loader = new Loader();
newPage.load(new URLRequest("homePage.swf"));
newPage.contentLoaderInfo.addEventListener(Event.COMPLETE, homeLoaded);
function homeLoaded(event:Event):void {
mcHome = MovieClip(newPage.contentLoaderInfo.content);
newPage.contentLoaderInfo.removeEventListener(Event.COMPLETE, homeLoaded);
addChild(mcHome);
}
I keep getting this error:
TypeError: Error #2007: Parameter child must be non-null. at
flash.display::DisplayObjectContainer/addChild() at
skeleton_fla::MainTimeline/homeLoaded()
I don't know how to solve it, or what to change!
Help please, I'm a bit desperate.
Is better to add to the displayList the Loader object instead its contentLoaderInfo.content. The Loader is a DisplayObject by itself. There is not need to access to the MovieClip inside of the Loader object although it is possible in the most of environments.
If you try to load an SWF that resides in other domain, you could add the Loader object to the displayList but you can't access to the content property if you don't create a crossdomain.xml file.
var newPage:Loader = new Loader();
newPage.load(new URLRequest("homePage.swf"));
newPage.contentLoaderInfo.addEventListener(Event.COMPLETE, homeLoaded);
function homeLoaded(event:Event):void {
newPage.contentLoaderInfo.removeEventListener(Event.COMPLETE, homeLoaded);
addChild(newPage);
}
Here you have an example.
So heres the code:
function playSound():void
{
var channel:SoundChannel = sound.play();
channel.addEventListener(Event.SOUND_COMPLETE, onComplete);
}
function onComplete(event:Event):void
{
SoundChannel(event.target).removeEventListener(event.type, onComplete);
playSound();
}
I get the error on channel.addEventListener(Event.SOUND_COMPLETE, onComplete);
but I dont get it at the start, as a game runs for some time without the error, so Im suggesting theres a problem in a onComplete function or an event listener, however, all I tried had failed and Im stuck here for some time now.
I just decided to post it here and see if anybody can see the problem.
Thanks in advance!
EDIT:
Sorry I havent included this right away.
Error:
TypeError: Error #1009: Cannot access a property or method of a null
object reference. at
projectSnowFlake_fla::MainTimeline/playSound()[projectSnowFlake_fla.MainTimeline::frame1:275]
at
projectSnowFlake_fla::MainTimeline/playGame()[projectSnowFlake_fla.MainTimeline::frame1:269]
at
projectSnowFlake_fla::MainTimeline/gameLoop()[projectSnowFlake_fla.MainTimeline::frame1:156]
[UnloadSWF] projectSnowFlake.swf Test Movie terminated.
And heres the sound :
var sound:Sound = new MainSound();
I read your code, the only potentially issue is sound variable, can be null.
Have you instantiated sound variable?
If sound is valued, the method play (of variable sound) can return a null value?
EDIT AFTER COMMENTS:
Hi, view this and this issue
I am getting this error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at Skool_fla::MainTimeline/frame1()[Skool_fla.MainTimeline::frame1:10]
at flash.display::MovieClip/gotoAndStop()
at Skool_fla::MainTimeline/goback()[Skool_fla.MainTimeline::frame2:22]
What is causing this error and how do I fix it?
This is my code for both the frames:
Frame 1: This is the main menu screen where you can access the credit section
import flash.events.MouseEvent;
//setting up the variables
//events
//stop the timeline
stop();
//the play button
play_btn.addEventListener(MouseEvent.CLICK, playani);
function playani(e:MouseEvent)
{
//asking it to progress to the load menu
gotoAndStop(3);
}
//the credits button
credit_btn.addEventListener(MouseEvent.CLICK, creditslide);
function creditslide(e:MouseEvent)
{
//asking it to go the credits frame
gotoAndStop(2);
}
Frame 2: This is where the credits appear
//
//
//all the imports
//events
var credit:credits_bck = new credits_bck ();
var credits_name: credit_nm = new credit_nm ();
var back_butn: back_button = new back_button ();
addChild (credit);
addChild (credits_name);
addChild (back_butn);
back_butn.addEventListener(MouseEvent.CLICK,goback);
function goback(G:MouseEvent)
{
removeChild (credit);
removeChild (credits_name);
gotoAndStop(1);
}
Either play_btn or back_butn is null. Your error message's line numbers don't correspond to your code so it's hard to say. But the gist is you're trying to access a property of something that isn't anything. Check to make sure you're initializing your variables/references properly.
Maybe your problem is Flash bug too.
In my FLA there was a layer with one empty keyframe. If I puted a vector graphics on it, the error was gone. If there was one or multiple MovieClips and there was no vector graphic - the error was there again.
Then I made a new layer and copy pasted all the objects from damaged layer to new and deleted the damaged layer. It solved the problem.
NOTE: Don't copy the keyframes. Only copy the contents.
Now my project is much more complicated and sadly the error came back again.
Test movie frequently and if the error comes back, check the last keyframes and layers you created.
please help i am getting this error and could not solve with any of the other methods described in all previous posts with similar topic.
Actually here i am loading a swf myMap onto another swf.
The swf loading works fine, but when try to remove this from stage i get the above said error...
ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
at flash.display::DisplayObjectContainer/removeChild()
at actions.classes::MapInteractionManager/unloadSWF()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
Here's my as3 code...
var _swfLoader:Loader;
var _swfContent:MovieClip;
loadSWF("myMap.swf"); //loading the swf file here
function loadSWF(path:String):void {
var _req:URLRequest = new URLRequest();
_req.url = path;
_swfLoader = new Loader();
setupListeners(_swfLoader.contentLoaderInfo);
_swfLoader.load(_req);
}
function setupListeners(dispatcher:IEventDispatcher):void {
dispatcher.addEventListener(Event.COMPLETE, addSWF);
dispatcher.addEventListener(ProgressEvent.PROGRESS, preloadSWF);
}
function preloadSWF(event:ProgressEvent):void {
var _perc:int = (event.bytesLoaded / event.bytesTotal) * 100;
// swfPreloader.percentTF.text = _perc + "%";
}
function addSWF(event:Event):void {
event.target.removeEventListener(Event.COMPLETE, addSWF);
event.target.removeEventListener(ProgressEvent.PROGRESS, preloadSWF);
_swfContent = event.target.content;
_swfContent.addEventListener("close", unloadSWF);
main.stage.addChild(_swfContent);
}
function unloadSWF(event:Event):void {
_swfLoader.unloadAndStop();
main.stage.removeChild(_swfContent); //getting error when trying to remove swf
_swfContent = null;
}
and close event is as,
_swfContent.dispatchEvent(new Event("close"));
Please help, I'm stuck.
here with some update,
i updated code as,
function unloadSWF(event:Event):void
{
if(main.stage.contains(_swfContent))
main.stage.removeChild(_swfContent);
}
Now the error is gone as it is not entering the if loop!!!???
But still i can see that swf on stage:( plz help
GOT SOLVED...
Thanks everyone for helping...
ToddBFisher did solve it:)
Simply added the _swfLoader to the stage, loaded it, and attached the close listener to it instead of even having a _swfContent. Cut out the middle man and it worked.... Hope this helps...
As I recall .unloadAndStop(); does a bunch of cleanup type things, which you are calling right before. It is possible part of the cleanup is removing it from the display list.
Try calling the removeChild() before calling unlodaAndStop()
function unloadSWF(event:Event):void {
stage.removeChild(_swfContent); //getting error when trying to remove swf
_swfLoader.unloadAndStop();
_swfContent = null;
}
EDIT
Try simply adding the _swfLoader to the stage, load it, and attach the close listener to it instead of even having a _swfContent. Cut out the middle man and see what happens.
The error means the child is already removed (or never added)
try to comment out
_swfLoader.unloadAndStop();
to see if it works.
main.stage.removeChild is already setting _swfContent to null because removeChild was fired so removing the line _swfContent = null might solve it.