I'm using this to show the callstack:
throw new Error("show me");
But I'd like to print a longer (deeper) stack because the current one do not show me what I need.
If you don't see more with Error.getStackTrace(), it's probably because there is nothing more in the stack. Except for private internal player calls like [Render] etc.
Look at the deepest item in the call stack, it's probably an event handler of some sort. If so, you can't dig deeper than that.
You can get the stack trace as a string and log it to a file or show it in a text field.
var e:Error = new Error();
var trace:String = e.getStackTrace();
someTextField.text = trace;
Edit:
Using Flash Develop I threw an error and was able to see more than 17 steps of the stack trace :
Error
at Main/func14()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:100]
at Main/func13()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:93]
at Main/func12()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:88]
at Main/func11()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:83]
at Main/func10()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:78]
at Main/func9()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:73]
at Main/func8()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:68]
at Main/func7()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:63]
at Main/func6()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:58]
at Main/func5()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:53]
at Main/func4()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:49]
at Main/func3()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:44]
at Main/func2()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:39]
at Main/func1()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:34]
at Main/onCreationComplete()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:29]
at Main/___Main_Application1_creationComplete()[C:\Users\SGU\Desktop\barisu\misc\flex4test\src\Main.mxml:5]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:13152]
at mx.core::UIComponent/set initialized()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:1818]
at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\LayoutManager.as:842]
at mx.managers::LayoutManager/doPhasedInstantiationCallback()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\LayoutManager.as:1180]
Related
Hey so I am trying to create an air app that generates a PDF for the user to save but am running into issues with PurePDF. Whenever I run the ImageElement.getInstance() method I am returned a runtime error:
Error: Error #2030: End of file was encountered. at flash.utils::ByteArray/readUnsignedByte()
I am still just in the testing stage and am not evening doing anything crazy. This is what my code looks like:
var bd:BitmapData = new BitmapData( 1024,768 );
bd.draw(pdfClip); //A simple movieclip on the stage containing an image
var bytes:ByteArray = bd.getPixels(new Rectangle(1024,768));
var image:ImageElement = ImageElement.getInstance( bytes );
I would be grateful if anyone that has used purePDF can offer any advice, the documentation is extremely limiting.
You should use the "getBitmapDataInstance" instead, because the "getInstance" method is expecting a png encoded bytearray.
ImageElement.getBitmapDataInstance( bitmap );
see also this example:
https://code.google.com/p/purepdf/source/browse/examples/src/ImageBitmapData.as
So I got a very basic class
package {
import flash.display.MovieClip;
public class XmlLang extends MovieClip {
public function XmlLang(num:int) {
trace(num);
}
}
}
and an object at frame one:
var teste:XmlLang = new XmlLang(1);
I'm getting this error:
ArgumentError: Error #1063: Argument count mismatch on XmlLang(). Expected 1, got 0
What am I doing wrong?
Thank you very much for you help.
Something is up with your setup. I took your code and implemented it and it worked.
Here's what I did. I created a new test.fla file in AS3 and put the following code on frame 1 - no object on the stage, just code in frame 1.
import XmlLang;
var teste:XmlLang = new XmlLang(1);
stop();
Created a XmlLang.as file, copying your code exactly and saved it in the same folder as the test.fla. Compiled and got a trace of 1
So I'm not exactly sure what's going on. What version of Flash are you running?
Not sure if this was your case, but for future googlers: you get this error message when you're trying to initialize a vector but then forget the new keyword.
So this:
var something:Vector.<Something> = Vector.<Something>();
Will give you an error saying that Something had an argument count mismatch. The correct line is:
var something:Vector.<Something> = new Vector.<Something>();
Difficult error to get at a glance. Took me a few minutes to find it in my code, especially because it doesn't really give you the error line.
I expect you have an instance of XmlLang located on stage, that will be constructed using a constructor with 0 parameters, like an ordinary MovieClip. To check for this, change the constructor header to this:
public function XmlLang(num:int = 0) {
This way, if something will instantiate an XmlLang without a parameter supplied, the new instance will receive a 0 (the default value) as parameter. And then you check your trace output, I am expecting one or more zeroes appear, followed by an 1.
UPDATE: Now I've moved the AMFConnection var declaration to outside the functions in Main, and commented out some trace() commands, and now it gives new errors:
Error #2044: Unhandled NetStatusEvent:. level=error, code=NetConnection.Call.BadVersion
at AMFConnection/init()[/Users/Jan/Downloads/amfphp1/AMFConnection.as:32]
at AMFConnection()[/Users/Jan/Downloads/amfphp1/AMFConnection.as:23]
at Main/testConnection()[/Users/Jan/Downloads/amfphp1/Main.as:14]
at Main()[/Users/Jan/Downloads/amfphp1/Main.as:10]
All of these essentially point to AMFConnection's NetConnection initialisation: _netConnection = new NetConnection(); (where _netConnection is declared at the beginning of the class)
I'm trying to connect to AMFPHP on a server (with Flash AS3), and the swf borks when it reaches the .connect() stage. To make things easier (?) and more reusable (?), I've put all the NetConnection mechanics into a separate class, AMFConnection, which I call from the Main document class like this (details changed):
public function testConnection(e:*=null):void {
var conn:AMFConnection = new AMFConnection();
conn.table = "some_table";
conn.selections = "*";
conn.conditionals = "WHERE something = 'something'";
conn.service = "QueryAMF";
conn.method = "makeQuery";
conn.displayText = txt;
conn.gogogo("http://www.someplace.com/Amfphp");
}
AMFConnection actually starts the connection and calls the AMFPHP service with the function gogogo(), and here's where the connect() NetConnection function just won't work. Here's the main section of the AMFConncection class
private var _netConnection:NetConnection;
private var _responder:Responder;
function AMFConnection()
{
init();
}
private function init(e:* = null)
{
_netConnection = new NetConnection();
_responder = new Responder(uponResult);
}
public function gogogo(url:String):void {
trace(url);
_netConnection.connect(url);
_netConnection.call(String(service+"/"+method), new Responder(onResult, null), table, selections, conditionals);
}
A quick debug session reveals the below errors:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at AMFConnection/gogogo()[AMFConnection.as:44]
at Main/testConnection()[Main.as:20]
at Main()[Main.as:8]
Where: Main.as:20 = conn.gogogo(...), and AMFConnection.as:44 = _netConnection.connect(url);
It also fails to display the stage, instead showing the loading dots. Now, eventually I'm going to move this application to the same server as the AMFPHP service, but even when I try it there with a relative url, instead of an absolute one, it still breaks down at connect(). I've tried changing the publish settings from local only to network only, to no avail.
Any clues? Know a better way to connect to AMFPHP locally?
Cheers in advance!
JB
P.S. Post updated, see top of page.
first, i prefer to use a php file which contains my sql and params. but hey...
The most obvious reason why you might get this error would be a fault in the url i guess. I believe that the standaard gateway.php is written without a capital G. and does not situate itself in the core folder but in the amfphp folder. but then again I don't know what you have altered.
Your _netConnection must be null, and you call connect() method on null reference, so you finish with NullPointerException. Show us how you initialize _netConnnection :).
Ok, I basically remade the thing, and after a couple of hours, it decided to work. I'm not sure how, but... eh.
Thanks all for your help
I cobbled together some code from here and there for a trace I like... it generates an error to get a stack trace and picks out the traced routine name, I like that detail in the trace log.
Problem: it fails in an installed AIR file. I wonder why? I don't expect it to do anything as is... just, I'd prefer it not cause the program to fail!
tx
artie
enter code here
static public function XTRACE( ... traceArgs ):void {
try {
throw new Error(); // make a stack
} catch (e:Error) {
var stack:String = e.getStackTrace();
var frames:Array = stack.split("\n");
var myFrame:String = String(frames[2]);
myFrame = myFrame.replace("\t", "");
// "at " can be followed by some part of the package
// you don't want to see. E.g., if your code is all in
// com.foo.bar, you can put "at com.foo.bar." so as not
// to crowd the display
myFrame = myFrame.substr("at ".length);
myFrame = myFrame.substring(0, myFrame.indexOf("["));
var now:Date = new Date();
trace(new Date().toLocaleTimeString() + ":" + myFrame + ": " + traceArgs.join(" "));
}
}
In what way is your app failing?
1) Trace routines are for debugging, so your trace won't do anything in an installed app.
2) I'm not sure when you call this routine, but it seems weird that you have a routine that only throws an error. I think in this code the 'catch' is only going to get entered if there's an error throwing the error. Normally you would try to perform some useful action, and catch errors when something goes wrong.
Within the trace function your attempting to invoke the Date().toLocaleTimeString() statically before it becomes instantiated by the new keyword. Try the following instead:
trace((new Date()).toLocaleTimeString() + ":" + myFrame + ": " + traceArgs.join(" "));
thanks for your input Fergal. The XTRACE function works fine running with the debug player, and fails only when running with the release player. So I assume the code line I use must associate values in the right order... I settled on using a function I didn't know about before:
enter code here
static public function XTRACE( ... traceArgs ):void {
if ( Capabilities.isDebugger ) {
With that, XTRACE does nothing unless it is executing in a debug environment. So it works around the issue. I'll still use your brackets though, I like to make order of association obvious too ;-)
I realize you've probably grown old and forgot what flash is since you asked this question. But, you're getting an NPE because e.getStackTrace() returns null in the release player.
A couple other things:
You don't need to throw the error to get a stack trace; new Error().getStackTrace() works fine.
Since this is debug code, and the calling code probably isn't expecting errors, you should wrap the whole thing in a try catch.
The compiler won't resolve 'at '.length, so it will be called every time at runtime. Unless you're really paranoid, you can just hard code it to 3.
Both the substrs can be combined into 1
The now variable isn't used.
I am trying to serialize & deserialize Vector. using ByteArray
Here is my code:
public static function serializeToString(value:Object):String{
if(value==null){
throw new Error("null isn't a legal serialization candidate");
}
var bytes:ByteArray = new ByteArray();
bytes.writeObject(value);
bytes.position = 0;
return Base64.encodeByteArray( bytes ).toString();
}
public static function readObjectFromStringBytes(value:String):Object{
var result:ByteArray= Base64.decodeToByteArray(value);
result.position=0;
return result.readObject();
}
No matter what I do, I keep having this error:
RangeError: Error #2006: The supplied index is out of bounds.
at flash.utils::ByteArray/readObject()
I am dipertly looking for a solution ..
Thanks in advance
Sameer
I found the problem reason after days of frustration ..
The loader SWF published for player 9, the content SWF published for player 10,
I simply republished the loader for player 10, and the Error #2006 disappeared from the loaded SWF
What I wonder about, is that the content uses Vector. type, which is player 10 feature,
how come it played correctly inside an older loader ?! Why there is no descriptive regarding different player versions ??
Try getting rid of the .position = 0 lines. They aren't necessary and the second one may be what is causing your issue. Also note that toString() is unecessary, as encodeByteArray already returns a String.
In case you want to send or receive the serialized object graph to server-side code without converting to a string first, see this link.