I'm making a quiz in flash for my tech class and I get that error, and "1061: Call to a possibly undefined method addEventListener through a reference with static type Class.". Here is my code
black_mc.buttonMode = true;
red_mc.buttonMode = true;
purple_mc.buttonMode = true;
black_mc.addEventListener(MouseEvent.CLICK, feedback);
red_mc.addEventListener(MouseEvent.CLICK, feedback);
purple_mc.addEventListener(MouseEvent.CLICK, feedback);
function feedback(event:MouseEvent):void
{ if (event.target.name == "black_mc")
{
feedback_txt.text = "Bruh thats a black rectangle lmao";
}
else if(event.target.name=="red_mc")
{
feedback_txt.text = "You flaggin man thats a red square lolol";
event.target.parent.removeChild(event.target);
}
else if(event.target.name=="purple_mc")
feedback_txt.text = "Ayyyy you got it bruh!"
event.target.parent.removeChild(event.target);
}
I checked the linkage for all the symbols and they're fine. No idea why this error is there
Related
I have an issue with some code that looks like this. In this form I have an error
The expression here has a type of 'void', and therefore can't be used.
Try checking to see if you're using the correct API; there might be a function or call that returns void you didn't expect. Also check type parameters and variables which might also be void.dart(use_of_void_result).
If I remove the .onDone() the error goes away. Why? ELI5 please :-)
I was looking at https://api.dart.dev/stable/2.7.0/dart-async/Stream/listen.html but seem to still be misundertanding something.
I also read https://api.dart.dev/stable/2.7.0/dart-async/StreamSubscription/onDone.html
serviceName.UploadThing(uploadRequest).listen((response) {
uploadMessageOutput = response.message;
if (response.uploadResult) {
showSuccess();
} else {
showError();
}
getUploadFileList(event);
isSaveInProgress = false;
}).onError((error) {
isSaveInProgress = false;
_handleFileUploadError(uploadRequest, error);
}).onDone(() {
isSaveInProgress = false;
});
Your code is almost right, but will only require a simple change to work correctly.
You would be seeing the same error if you swapped the ordering of onError and onDone, so the issue has nothing to do with your stream usage. However, you're attempting to chain together calls to onError and then onDone which won't work since both of these methods return void.
What you're looking for is cascade notation (..), which will allow for you to chain calls to the StreamSubscription returned by listen(). This is what your code should look like:
serviceName.UploadThing(uploadRequest).listen((response) {
uploadMessageOutput = response.message;
if (response.uploadResult) {
showSuccess();
} else {
showError();
}
getUploadFileList(event);
isSaveInProgress = false;
})..onError((error) { // Cascade
isSaveInProgress = false;
_handleFileUploadError(uploadRequest, error);
})..onDone(() { // Cascade
isSaveInProgress = false;
});
I want to validate input corresponding to the following grammar snippet:
Declaration:
name = ID "=" brCon=BracketContent
;
BracketContent:
decCon=DecContent (comp+=COMPARATOR content+=DecContent)*
;
DecContent:
(neg=("!"|"not"))? singleContent=VarContent (op+=OPERATOR nextCon+=VarContent)*
;
My validation looks like that:
#Check
def checkNoCycleInHierarchy(Declaration dec) {
if(dec.decCon.singleContent.reference == null) {
return
}
var names = newArrayList
var con = dec.decCon.singleContent
while(con.reference != null) {
con = getThatReference(con).singleContent
if(names.contains(getParentName(con))) {
val errorMsg = "Cycle in hierarchy!"
error(errorMsg,
SQFPackage.eINSTANCE.bracketContent_DecCon,
CYCLE_IN_HIERARCHY)
return
}
names.add(getParentName(con))
}
}
But when I test this validation with a testCaseit returns me an error message:
Expected ERROR 'raven.sqf.CycleInHierarchy' on Declaration at [-1:-1] but got
ERROR (org.eclipse.emf.ecore.impl.EClassImpl#5a7fe64f (name: Declaration) (instanceClassName: null) (abstract: false, interface: false).0) 'Error executing EValidator', offset null, length null
ERROR (org.eclipse.emf.ecore.impl.EClassImpl#5a7fe64f (name: Declaration) (instanceClassName: null) (abstract: false, interface: false).0) 'Error executing EValidator', offset null, length null
I just can't figure out what's wrong with it so I hope that someone of you might have an idea.
Greetings Krzmbrzl
You test utility tells you that the validator did not produce the expected validation error ("CycleInHierarchy").
Instead, the validator produced the error "Error executing EValidator".
Which means an exception has been thrown when your validator was executed.
It turned out it was an internal error...I'm still not exactly sure what went wrong but I have rewritten my validation method and now it works as expected.
Now the method looks like this:
enter code here#Check
def checkNoCycleInHierarchy(Declaration dec) {
if(dec.varContent.reference == null) {
//proceed only if there is a reference
return
}
var content = dec.varContent
var names = newArrayList
while(content.reference != null && !names.contains(getParentName(content))) {
names.add(getParentName(content))
content = content.reference.varContent
if(names.contains(getParentName(content))) {
val errorMsg = "Cycle in hierarchy!"
error(errorMsg,
SQFPackage.eINSTANCE.declaration_BrCon,
CYCLE_IN_HIERARCHY)
return
}
}
}
I have the suspicion that there was a problem with the usage of my "getThatReference" in this case.
Greeting Krzmbrzl
Trying to get the space bar to do an action in ActionScript.
Here is bits of the code that are relative.
var space:Boolean = false;
.
stage.addEventListener(KeyboardEvent.SPACE, kSpace);
.
function kSpace(e:KeyboardEvent)
{
if (e.keyCode == 40)
{
down = false;
}
if (e.keyCode == 38)
{
up = false;
}
if (e.keyCode == 32)
{
shoot = true;
}
}
function shootBullet()
{
var bullet1:bullet = new bullet();
bullet1.x = ship.x + ship.height / 2;
bullet1.y = ship.y;
bulletContainer.addChild(bullet1);
}
Getting the error Scene 1, Layer 'Actions', Frame 2, Line 17 1119: Access of possibly undefined property SPACE through a reference with static type Class.
Line 17 being stage.addEventListener(KeyboardEvent.SPACE, kSpace);
Would love to get this sorted :)
KeyboardEvent.SPACE is not an event. Try listening to either KeyboardEvent.KEY_DOWN or KeyboardEvent.KEY_UP
I'm trying to build a streaming .mp3 player to run various sound files on my web site. To do that, I followed a tutorial that includes a code template at:
http://blog.0tutor.com/post.aspx?id=202&title=Mp3%20player%20with%20volume%20slider%20using%20Actionscript%203
However, whether I preserve the template's direction to the author's own sound file or insert my own direction to my online sound file, I keep on running into glitches in the ActionScript that I can't fathom.
Those errors are:
1084: Syntax error: expecting rightparen before _.
1086: Syntax error: expecting semicolon before rightparen.
When I try to correct them, I get new errors. I can't determine whether the sound file is loading; it certainly never plays. The volume slider does not work.
I did find one line that looked like it should have been commented out, the one that reads
to start at the same place
So I tried commenting that out. No dice. Same errors.
Thanks in advance for any suggestions. Code follows:
var musicPiece:Sound = new Sound(new URLRequest _
("http://blog.0tutor.com/JeffWofford_Trouble.mp3"));
var mySoundChannel:SoundChannel;
var isPlaying:Boolean = false;
to start at the same place
var pos:Number = 0;
play_btn.addEventListener(MouseEvent.CLICK, play_);
function play_(event:Event):void {
if (!isPlaying) {
mySoundChannel = musicPiece.play(pos);
isPlaying = true;
}
}
pause_btn.addEventListener(MouseEvent.CLICK, pause_);
function pause_(event:Event):void {
if (isPlaying) {
pos = mySoundChannel.position;
mySoundChannel.stop();
isPlaying = false;
}
}
stop_btn.addEventListener(MouseEvent.CLICK, stop_);
function stop_(event:Event):void {
if (mySoundChannel != null) {
mySoundChannel.stop();
pos = 0;
isPlaying = false;
}
}
var rectangle:Rectangle = new Rectangle(0,0,100,0);
var dragging:Boolean = false;
volume_mc.mySlider_mc.addEventListener(MouseEvent.MOUSE_DOWN, startDragging);
function startDragging(event:Event):void {
volume_mc.mySlider_mc.startDrag(false,rectangle);
dragging = true;
volume_mc.mySlider_mc.addEventListener(Event.ENTER_FRAME, adjustVolume);
}
function adjustVolume(event:Event):void {
var myVol:Number = volume_mc.mySlider_mc.x / 100;
var mySoundTransform:SoundTransform = new SoundTransform(myVol);
if (mySoundChannel != null) {
mySoundChannel.soundTransform = mySoundTransform;
}
}
stage.addEventListener(MouseEvent.MOUSE_UP, stopDragging);
function stopDragging(event:Event):void {
if (dragging) {
dragging = false;
volume_mc.mySlider_mc.stopDrag();
}
}
Syntax errors are just what it says they are, the code is not properly written. For instance , you shouldn't have an underscore after URLREquest
var musicPiece:Sound =
new Sound(new URLRequest("http://blog.0tutor.com/JeffWofford_Trouble.mp3"));
to start at the same place should be commented out, simply because it's a comment, it's not a variable or a function.
to call a function "play_" is not really good practice either. Call it soundPlay, if you're concern about conflicts.
same comment for pause_ and stop_
Like shown here I want to use the validationResolver to dynamically validate user inputs in my App. Therefore I want to proove, if a condition is true in my controller. If the condition is true, I want to validate with an own validator.
For that I tried that:
public function createAction(Object $newObject) {
$TS = $newObject->getSomeProperty();
$ABT = $newObject->getSomeOtherProperty();
if ($TS === 'specialvalue') {
$validatorResolver->createValidator('Your.Package:Foo'));
}
But I get (of course) an 500-exception:
#1: Notice: Undefined variable: validatorResolver in /var/www...
Please give me a hint how to use the $validatorResolver.
I did it now this way:
public function createAction(Object $newObject) {
$TS = $newObject->getSomeProperty();
$ABT = $newObject->getSomeOtherProperty();
if ($ABT === 'specialvalue') {
$validatorResolver = new \TYPO3\Flow\Validation\ValidatorResolver();
$customValidator = $validatorResolver->createValidator('Your.Package:Foo');
$result = $customValidator->validate($TS);
if ($result->hasErrors()) {
$this->flashMessageContainer->addMessage(new \TYPO3\Flow\Error\Error('Here you can type in the error message!'));
$this->errorAction()->forwardToReferringRequest();
}
}
....
....
}