I have some code from a CS3 app composed of the .FLA file with an .AS file for the class that had definitions for two private classes in it. Yesterday I brought the files into CS4 and noticed that they did not compile. Gives an 1120, access of undefined property and names a constant. I have reduced this problem down to bare bones and it still occurs, so it is a bug in CS4.
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Okay so you've got your private vars in your AS2 Class, you think they're all safe right? Wrong.
Doing a trace(MyClass.myvar); will spit out an error that the var is private and you can't touch it.
But a trace(MyClass["myvar"]); will work perfectly fine. You can use it normal, without any setters getters outside the class.
Is there a way to protect against this? I think this is a huge security flaw. I know it's simple OOP, but a private var in an object should have rules.
ActionScript Code:
class Vector2d extends Math {
private var x:Number;
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I can't seem to get my private variable, x, to be private. From my understanding of private variables, tracing n.x should throw an error, and adding 150 should throw an error. I've tried changing the variable's name, and the cast type, to no avail. The first trace goes through, the addition goes through, and the second trace goes through.
I'm new to classes, so I could easily be overlooking something vital. But the vars need to be private, because I want to use get/set to update the variables when one or another changes. For instance, if 50 is added to the y value, the magnitude and unit vectors would change, so I want to update them using getMag and getUnit. That whole system would be thrown off if the user had direct access to the properties.
my understanding of extending classes is that you gain all the functions and methods of that class thus You could over ride any one of them. How ever I am confused on weather or not you inherit and can over ride private methods of the class you are extending or if you have to have all methods public in an extended class.
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How do you go about creating a Class that just holds constants such as the StageScaleMode or StageAlign classes. I tried just making a class with just public static constants and an empty contractor but I get errors.
View 2 RepliesI am working on a Flash site template for which I am implementing the possibility for the users to change the theme dynamically while the site is opened.Basically, the site will have a few themes available and when the user selects a new theme, all of the site objects will change their properties (colors, alpha, fonts, etc) to fit the new theme.
And my questions is what is the best approach to sending the theme information to all of the objects in the site.I was thinking of making a static class called "Theme" and when the objects need a property, they will call a static getter of the Theme class that will return the appropriate property value for the object.But, from my understanding, static properties are quite slow and seeing that I may need quite a lot of them, maybe more that 100 for the whole site, will this approach be too slow ?
I am working on a Flash site template for which I am implementing the possibility for the users to change the theme dynamically while the site is opened.Basically, the site will have a few themes available and when the user selects a new theme, all of the site objects will change their properties (colors, alpha, fonts, etc) to fit the new theme.And my questions is what is the best approach to sending the theme information to all of the objects in the site.I was thinking of making a static class called "Theme" and when the objects need a property, they will call a static getter of the Theme class that will return the appropriate property value for the object.
But, from my understanding, static properties are quite slow and seeing that I may need quite a lot of them, maybe more that 100 for the whole site, will this approach be too slow ?
Flash UI Components have many different styles to set, which require passing a string name to the setter method.while this certainly is not challenging, the use of a constants class would be beneficial but i can't find one.is there no constants class available with all of the possible style settings?
View 1 RepliesI'd like to make an object that has it's properties named by constants from another class but can't quite get it to work. I'd essentially like to do something like this:
var myObject:Object = {Event.OPEN:"value", Event.COMPLETE:"value2"};
This syntax causes compiler errors.
I have a class ErrorMessages which holds all my error messages as static constants. So I could access them like ErrorMessages.PASSWORD_INVALID or ErrorMessage.PASSWORD_TOO_SHORT. I want to know if it is possible to have separate classes that hold subset of these constants and access them like ErrorMessages.PASSWORD.INVALID or ErrorMessages.PASSWORD.TOO_SHORT, etc. This way I can more structured static structure and makes it much easier to use autocomplete. I tried few different ways and couldn't figure out if this was possible..
View 3 Replieshere is a snippet of my code in an as file
ActionScript Code:
class PoolBall extends MovieClip {
private var poolBall:MovieClip;
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i have created a Vehicle.as file and a Car.as file which are in the same project. The problem i am having is trying to use the properties in my Car.as from my Vehicle.as file.Vehicle.as
Code:
package
{
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I've heard it's considered best practice to keep all class properties private and to change them using getter and setter methods.
View 5 RepliesI try to serialize objects with their private attributes, in Flex.
The introspection API does not seem to allow it:
"The describeType() method returns only public members. The method does not return private members of the caller's superclass or any other class where the caller is not an instance."
Is there another way for an instance to know the name of its private members?
I have a class which deals with a lot of visuals, which essentially are movieclips. So I have around 50 privately declared movieclips in the class. Would it be a good idea to put them in a dictionary and retrieve them by their name (as key) , put them in an array or just leave them as they are?
My issue is the visual look of my class right now with that many private members, looks like a mess visually.
I am writing class that extends adobe air PNGEncoder,
I want to use the writeChunk method, but it seems to be private static and i cant seems to use it with my code But it gives the error as below
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there are classes definitions where all their methods are private my question is why are they private, because i've tried a code wherein i changed all the private access modifier to public and nothing changed!
what if you make an instance of that class with all its method private, how are you be able to access that on another class. coz i know private methods are only accessible to the class where they are declared! will the instance of that class be able to access the superclass's private methods!
on private variables, it's still not clear to me as to why make a private variable and then use a getter and setter, when you can simply make it public! are these variables called static?cause on the way i understand it private functions and private variables are static?
I have a class that creates an array from a config xml file. I set a private variable in that class and use a getter in other classes to access the array. The routine that uses the array does the following:
- Call the getter and assign the returned value to a local (private) variable tmpArray. the getter is a simple return() using a value that is established in the constructor.
- Uses a for loop to itterate over the contents
- Uses array.shift() to pop the item in tmpArray
The next time I run the routine, the contents of the array is empty. I'm using the same getter. I implemented the getter when I tried to manage both arrays in the same class figuring that as long as the original array was private (i also tried static), that the value would not change. I have since worked around the problem by moving the routine that fills up the original value from the constructor to the getter. So, consider the following code:
import flash.events.Event;
btn.addEventListener("click", btnHandler);
var myArray = new Array();
var myTmpArray = new Array()
myArray = ["one", "two", "three"];
myTmpArray = myArray;
function btnHandler(evt:Event) {
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If I create a variable myVar and set it to 1 then set myOtherVar = myVar, the both equal the same value. If I change the value of myOtherVar, myVar is not affected. But using the shift() method changes both the original and the copied array.
I have .fla file where I have instantiated an object of a class( testclass.as ) like this in frame 1
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Currently I have two classes which are "bullet" and "enemy".There are two instances of the enemy class.Code from an ENTER_FRAME event in the Bullet Class:
ActionScript Code:
try
{
for(var k:int=0; k<getEnemys.length; k++)
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The Enemy Class has a private variable called "hits".What do I have to do in order to reduce the hits of the instance of the enemy that was hit by the bullet?
These two functions are taken out of my as class file, even though the setInterval is never cleared it only calls generateParticles 1 time. Someone please help me figure this out. I have been messing around with it over an hour but still can find why its only called once. emit is a private var Number declared outside the function in the class.
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I have a Color class where all the data is stored in a single uint named "_value". However, the constructor for Color looks like this:
public function Color(r:uint = 0, g:uint = 0, b:uint = 0):void
{ _value = (makeChar(r) << 16 | makeChar(g) << 8 | makeChar(b)); }
If I want to create a clone() method, I have to first convert the "_value" variable to an RGB object, then, the constructor automatically converts the object back into a hexadecimal value. Blatent waste of efficiency! However, I would rather have the constructor be user friendly and allow them to type in each color value instead of one hex value (they can use the Color.fromHex() if they really want to, but it does the same as the clone() method and converts back and forth).
Is there any way to instantiate a class without going through the one single constructor function? Any way to set up a private constructor in addition to the public one? Most Visual Studio languages allowed you to have multiple constructors, and the chosen constructor is determined by the passed in arguments. This was really convenient, but sadly, AS3 only allows one constructor, right?
I'm setting up functions in a document class file, then from there I am going to call that function from a movieclip in flash. For some reason, maybe I have things set up wrong, but it is throwing me errors such as below: Line 37 1013: The private attribute may be used only on class property definitions. What am I doing wrong here and is there something I am not understanding? Here is my .as code. modal.as > package
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This error is just making me wanna commit where have i gone wrong? Help would be awesomepackage classes
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Why static method cant access private properties in the same class?
View 1 RepliesWhy I am losing scope on an array that i define as a private member in a class? I am able to access it from a couple of different functions but in one place inparticular it keeps coming up "undefined". What causes scope to be lost in a function for an array that is defined as a private class member?
View 4 RepliesI have this sample class
Code:
class TestPrivate{
public function TestPrivate(){};
private function getGo(){
trace("can execute");
}}
And then after instantiate I just calling the method...for testing the "public" and "private" keyword purposing only...
Code:
import TestPrivate;
var obj1 = new TestPrivate();
obj1.getGo();
The result is still can be execute even though I put the private keyword in front of the methods. So what's the private keyword stands for actually...I thought it prevent been get accessed from outside...
Here's my main class:
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in the timeline I have a dynamic text box named my_textbox: var my_test:main = new main(); my_test.check_DVBViewer(); my_textbox.text = ??Basically the class waits for the callback variable (my_msg). The problem is: I need to set the dynamic textbox text to my_msg variable. How can I access it? I know I can access a public var in the timeline with functioname.variable but I can't define a public var inside a function, right?
I'm building a drag and drop quiz. each draggable mc (drag#) has a base class of DragDrop. I want to detect when an drag mc has been dropped on a target
Code:
if(this.hitTestObject(target)) {}
And then add a new drag from the drops Array. so that each time a drag finds its target a new one appears. I tried to make a public var named dropped to switch from "yes" to "no" in the drop function. and even tried making the drop function public.
This code is on the timeline
stop();
var drag1:Drag1;
drag1 = new Drag1;
addChild(drag1);
drag1.x = 100;
drag1.y = 100;
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how to get a Class file up and going in Flash and that works fine but say I want to import other classes. I try "import testCass" above in my import statements section of my as file and that doesn't work. What do I have to do to get that to work?
View 6 Replies