I'm getting the "Error #1009: Cannot access a property or method of a null object reference." error on my application. Is there a function I can use to detect this before it causes an error... maybe something like:
isValid(variableName);
I know there's one, because i've used it before, but i can't remember what it is right now.
In flex, how to check if a variable exists? I have tried using
if (this['some_variable'] != undefined) {
//do something
}
There is a run time error saying the property some_variable does not exists. I have checked with null instead of undefined, still the same error.
Based on the replies I have used this.hasOwnProperty('variable_name'). I found that its returning true if variable_name is a public but false if its private/protected. How to check for a private variable?
I've created a custom textInput componenet that handles it's own validation using a private validator. The validation is enabled depending on the state of the component i.e. validation is enable when the components state is "edit".However, when the state changes from edit the internal validator is set to not enabled but the validation errors on the textbox do not clear - the textInput still has the red border and on mouseover the validation errors come up. What I want to happen is that when a validator is disabled the error formatting and error messages clear from the text input control.
Does anyone have any idea how to do this I tried setting the internal validator instance to enabled = false and dispatching a new focusOutEvent as below but the validation error formatting is still applied to the textInput contrl.
_validatorInstance.enabled = false;
//clear the validation errors if any
dispatchEvent(new FocusEvent(FocusEvent.FOCUS_OUT));
[code].....
I am putting together a Flash Form. I had it all finished and posted it on a testing site, then I realized there was a problem.I have form validation that works like this. If a user hits the submit button but has not entered information in all of the required fields, the user will get an error message telling them to input all required information. However, there is a workaround. It seems that Flash sees the value of the "spacebar" as a positive value and lets users get past my validation.I need to assign the "spacebar" a value, make it a variable, or something along those lines. Then tell it to be equal to "0", which is not an acceptable number to pass my form validation.
View 5 RepliesI made a login form using flash and made it pass it's variable to php for validation. I have two (2) variables from my php file that I want to pass to flash so it can control my movie. When I pass those two (2) variables, the first one has no problem. My dynamic textfield displays the value that the php sends but when I pass the second variable from my php to flash and displays it in my other dynamic text field, it displays the value but it appears to have html tags i.e.,
1<br /><b>Notice</b>: Undefined index: userLoggedIn in
<b>C:wampwwwestfernwoodestDisplayClients.php </b> on line <b>83</b><br />.
The value of my variable from php is 1 and as you can see, it contains html tags. How can I remove these tags?
I'm trying to check to see if a variable exisits using:
if (_root.displayCurrentvar.length > 0)
is there a function I could use like isNull ?
if (XMLData.product[i].image[0].thumb) {thumbURL = XMLData.product[i].image[0].thumb;}Returns: TypeError: Error #1010: A term is undefined and has no properties.Same withif (XMLData.product[i].image[0].thumb!=undefined) {thumbURL = MLData.product[i].image[0].thumb;}
View 2 RepliesI'm attempting to make a platform game. Each level is contained within it's own MovieClip, which has it's own class. Each of these classes extend the Level class, which provides basic functionality for all levels.
Each individual level has a numPlatforms variable which stores the number of platforms in that particular level. I currently have a for loop that runs from 1-numPlatforms and sets the level area (the image, more or less) the platform contains:
[Code]....
Is there any way to check if a variable exists within a MoveClip? I've trying comparing it to null and also to undefined, but neither works.
Wanted to know if it is possible to make a bool-variable in flash that is set to 'false' by default. It then checks if a file exists at a certain location, and if so, the bool-variable is set to 'true' ?
Something like:
if (c:/myTextfile.txt == true){*do stuff here*;}
What would be the correct code?
1- Variable Scope : Accessibility and existence are used almost interchangeably in various documents I've read. I'd like to know if a local variable physically exists (in memory) outside of the function it was declared in, and is not accessible from other methods, or if its existence ceases outside the function.
2- Classes : When do you create an instance of a class versus importing it only, specifically in the case of classes used only as say, calculators ?
I am new in flex and recently read about Validation and Invalidation in components.
View 2 Repliesi have a problem while username and password validation.i retrieved data (username and password)from an xml doc using http service but the problem is that i have to verify the username and password entered by he user with the username and password of the xml doc...
my xml doc is as follows:
<employees>
<employee>[code]....
I have a XLSX file which contain 2 columns 1 being a formatted date, time or datetime field and other being the relavant format string of type FLEX. So this file contains Flex date format string with formatted value. This files can be contain more than one thousand such combination records. [code]What i need to know is, is there anyway that i can validate this given date , time or date time values at right side are formmated according to given FLEX format in the left side.
View 2 Repliesin my variable i am getting error private var friendsList:VBox; "conflict exists with definition friendlist in namespace internal" what it is?
View 1 RepliesI have a Flex 3 app with a view in a viewstack, and that view must only be created when requested. I have declared validators for each of the controls on the view and I have created a method called checkAllValid() which runs Validator.validateAll(). This works great when I'm actually using the controls (using the change or focusOut events), but how can I get checkAllValid() to run when the view is first displayed to the user, so that they are immediately shown what is invalid once the data is populated in the controls?
I have tried putting the call in various events on the view itself (e.g. creationComplete, updateComplete, show, activate, etc.) but it always shows the following error when I start the application:
'The source attribute must be specified when the property attribute is specified.'
I have also tried setting the creationPolicy on the view to "all" but this does not help.
Some of the validators are only enabled when the form is in a certain state, but I have eliminated that as being the potential problem by commenting out all of my validators except for this most simple one:
[Code]....
I have also tried calling the single validator directly rather than using validateAll and the result is the same.
There must be a way I can force the view to validate when it is shown....
(by the way it's in the Cairngorm MVC framework and I have data bound to the controls)
I want the validator for password text input.
At least one Upper case letter
At least one numeric character
At least one special character such as @, #, $, etc.
should be there in password how can i give it in action script or mxml.
How to remove validation programmatically from flex componentThis is my method
public static function validateRequired(txt:TextInput, errorMessage:String="This field is required"):Boolean
{
[code]....
I might be taking crazy pills but has anyone actually gotten the errorSkin feature to work? I am not doing anything crazy, just extending TextInput (spark) and setting the errorSkin property.I have tried creating a skin using SparkSkin, did nothing.I have tried creating a skin using ProgrammaticSkin, did nothing.TextInput is always a red border. I know you can set errorColor and errorString but I am obviously looking to do more than just change the color of the border. I am compiling using Flex 4.1.
Implimentation:
<components:PromptedTextInput id="txt"
width="200"
[code].....
is it possible to check if there is any item in a list?
View 3 RepliesI'd like to use tooltips with the same design as the error/validation tooltips (rounded box with a tip pointing to the mouse's position).Given the name "error/validation tooltips", it bothers me to use them as normal tooltips.I haven't found people having the same "principles" issue as myself..So, is it that bad to use the error/validation tooltips as normal tooltips? And, if yes, what would be the easiest way to re-use its design without rewriting much code?
View 2 RepliesThe examples I've seen seem to show how to change the color that shows when the user actually hovers over the textinput field.
However when the validation fails, a generic textInput border qill have a red line over it. My CSS file uses a border skin for the textInput, so I can't see this line.
I was hoping there was a way to highlight the text box when it failed validation, or re-enable the red line feature. I don't want to get rid of my CSS cos it'll totally blow my color-scheme, but any tweak allowing the error line
This is the CSS:
TextInput, TextArea
{
border-skin: Embed(source='/../assets/images/input_bg.png', scaleGridLeft=8, scaleGridRight=20, scaleGridTop=8,scaleGridBottom=9);
[Code]....
I am seeing a strange issue in flex. I need to reset all text input fields to 0 once the
user submits the values to be calculated. In the method
private function calculate():void {
resetToZero();
var num:Number = parseFloat(s21.text);
[code].....
I'm a new grad, so please be kind. I'm working on validating input in a Flex DataGrid cell that the user can edit. The rows in the DataGrid are backed by an mx.collections.ArrayCollection that includes a [Bindable]Model that I wrote. I want to validate against a custom client-side Validator, if-and-only-if that passes I want to validate the input on the server. If client-side validation fails, I want to display the normal validation error (see image below). If server-side validation fails, I want to use the same sort of UI components to notify the user. The solution should not include any external framework (Cairngorm or PureMVC).
[Code]...
How do Flex programmers validate on the server, immediately after the valid client-side validation passes?
I realize it seems silly to search out this "synchronous" design and I hope someone has an answer to solve my problem with best practices. In my defense, the reason I want to validate on the server immediately following client-side validation is so that I'm using Flex's validation framework. If I get an invalid response from the server, I want to leverage the built-in UI components that Flex has to tell the user something is incorrect about his/her input.
I am getting a number of spurious warnings in my CSS files within my Flex project. Any way to tweak which warnings are displayed in Eclipse like I do with Java?
View 1 RepliesI was creating a form. Certian fields of the form store all of those IDs to a single field separated by a comma or semicolon. how to send the mail id's for email validation which is providing by flex by default.
View 1 RepliesI have text input boxes. There is validation for each of the boxes using numberValidator. Now, the thing is that am using alert box to show if any error occurs.
Flowchart ::
1> Insert value in textBox.
2> NumberValidator validates the input on "trigger=change".
3> If error, alert message is displayed. The user clicks OK to go back to form.
4> Focus set back to the TextBox.
5> But, alert box makes the text input value blank / null. i.e. Both the previous error value entered by user and the default correct value will not be displayed now.
Display the most recent correct value that was entered in the text box. Not the default of any other, but the most recent correct value entered by the user.
I have a Rect object that I'd like to create and set its properties only once. After that, I want to just modify its properties since it already exists. This is my general idea
if(theRect == undefined){
Alert.show("creating");
var theRect:Rect = new Rect();[code].............
but can't get the desired effect. Everytime this code block runs, and depending on which version I've used, it either gives me a "can't access null object" error or the if statement always evaluates to true and creates a new Rect object and I get the "creating" Alert. What's the right way of creating that Rect but only if doesn't exist?
Is there a video player for Flex which allows me to play videos at slower or faster rates and reverse play it?
View 1 RepliesIn flex, How can I check if a component exists?
View 1 RepliesWhen a Validator (i.e. StringValidator, NumberValidator, etc) dispatches an invalid event due to validation failure, the errorString property of the source control (i.e. TextInput) is set to a non-empty string which creates a red border around the control and shows an toolTip (errorTip) ONLY when the mouse hovers over the control. Question: Can you force immediate display of the toolTip (errorTip) rather than waiting for the user to hover over the control? If so, how?
View 2 Replies