Flex :: Flash Builder - Datagrid Within Repeater - Data Bind Warning?
Jul 8, 2010
In my Flex app I am using a repeater to show a report on my database data. On this report the user can "drill-down" on the data to show more detail. In order to make this easier on the eye I have a header label and then a datagrid within the repeater.Whilst this works perfectly, because the dataprovider for the datagrid comes from an array in the repeaters dataprovider, it is causing the following warning:Data binding will not be able to detect assignments to "report"The warning is for this line:
<mx:DataGrid id="dgReport" dataProvider="{rptReport.currentItem.report}" rowCount="{rptReport.currentItem.report.length}">
<mx:Script>
[code].....
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Nov 28, 2009
I have a DataGrid component that I would like to update every 5 seconds. As rows are being added to this DataGrid I noticed that every update causes it to reset the scroll bar position to the top. How can I manage to keep the scroll bar at its previous position?
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Jun 13, 2011
I have a form that consists of two data grids and a button. Datagrid 1, "myStaticDataGrid", has values I have added for the user to select from. I want the button's click event to send the current selection of myStaticDataGrid to the second datagrid, "myDataGrid". I have been able to accomplish this if I use a text box and a datagrid but I am having trouble finding the right syntax to grab the selection data from myStaticDataGrid.This is my attempt using the two datagrid approach:
<s:Form id="myForm">
//The values from this grid are determined once the button is clicked.
<s:FormItem id="myDataGrid">
[code].....
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Apr 7, 2011
I am getting the error: warning: unable to bind to property 'Description' on class 'Object' (class is not an IEventDispatcher)
this is only when the data is bound to a List as an ArrayList, though. I had it in a Datagrid before (just as an Array) and it did not cause any issue. I'm not expecting to be able to bind any data back to the class 'object' not even sure which object exactly it's referring to.
My list data-provider is an ArrayList.. populated by a result event from an SQL query contained in another class:
private function loadDayComplete():void
{
var Meals:Array = _day.MealResults;
[Code].....
The day class I have is a data holder to get all the data (from several tables) for a 24 hour span.. I have classes for each individual datatype for editing them. But I'm not sure do I even need to worry about the warning if I don't plan on editing the values? it completely spams the console though whenever I touch anything, so I really would like to get rid of it. I tried an object proxy as I saw described elsewhere but nothing changed. The text is in label fields right now anyway, which can't even be edited.
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Oct 20, 2011
I am reading dynamic data from the MySQL using JSP and it's forwarding the details in the form of XML to the Flex. I would like to bind this XML data to the datagrid. Am able to bind the data if the datagrid has only one column but don't know how to bind data which contains 2-3 columns.
[Code]...
Using HTTP Service am able to display this as an Alert message in the Flex but don't know how to bind this to a datagrid.
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Feb 14, 2010
I've added an eventListener to the COLLECTION_CHANGE event that is fired when the grid is finished resorting the items in its dataProvider, after the user clicks on a column header:MyType (myDataGrid.dataProvider).addEventListener(CollectionEvent.COLLECTION_CHANGE,onDataGridResort);
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Oct 20, 2009
warning: unable to bind to property 'image' on class 'XML' (class is not an IEventDispatcher)Is there a way I can turn off this type of warning (but keep the others) as it is driving me crazy when I try to trace something else.
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Jul 19, 2009
Usually when I run my application Flex Builder creates a file in a directory on my local PC and then opens a browser and points to it. Everything was fine, but when I decided to link django server to flex applications via xml data providers I started to get security errors. (Related to absence of crossdomain.xml). When I created the file and put it on the server[code]...
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Feb 4, 2010
I am attempting to style the headers in a flex datagrid and I keep getting the warning:
Type DataGrid in CSS selector 'DataGrid' must be qualified with a namespace
What does this mean? I have gone through a bunch of tutorials and none of them have worked. It seems like changing a the colors in a datagrid should be relatively simple.
Here is a code sample:
<mx:Style>
.headerCustomStyle
{
fontWeight: "bold";
[code]....
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Jun 15, 2009
I am trying to bind a datagrid item to a combox, so that when the user selects the item in the datagrid the form displays the selected data for editing, however one of my items is a combobox using a dataprovider.
I would like the item selected in the datagrid to match the selected item in the combobox, this part is fine however if my datagrid item is null then I cannot get the combox to set the selected index to -1?(the same happens if you use the CRUD wizard in Flex builder 3 for ColdFusion)I am using the following code for my custom combobox:
<mx:ComboBox
xmlns:mx="http://www.adobe.com/2006/mxml"
xmlns="*"
creationComplete="componentInit()"
[code].....
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Nov 4, 2011
If user change the value of the TextInput, then click refresh button to retrieve the data model from backend again, the GUI value will not change back. Re-binding not happen, Since the value of data model not changed, no propertyChanged event fired.In this case, I must Programmatically set the model value to the GUI after data refreshing done.I know bi-directional binding can solve this problem(when user change value on GUI, set the new value to data model immediately). But sometimes I cannot use bi-directional binding, for example, the data model is a int, but user input a non-int value, I cannot set the value to data model. So the value in data model do not change, when refresh data, rebinding still not happen.
This will make the data binding useless. How to resolve this?I put pseudo-code here for now, I will put real code later:1. retrieve a data model from server, via blazeds or something else.2. bind the model to a TextInput on GUI.3. user change the TextInput text.4. User click a refresh button, triger retrieve the model value again.5. Now since the model value do not change, no PropertyChanged event fired.6. GUI value still is the user's input, not the value from the model. can clear the model value before set the velue back, make re-binding happen.(but sometimes you do not know how to clean the model value, take int for example, you may do not know the original value and happen set the same value). Or I can manually set the model value to GUI. But both are not good looking.
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Feb 19, 2012
I thought I could use...
studentID = myDataGid.selectedItem.studentID
Does not want to work for me. Tracing the expression in debug it is returning "XMLList (@11e55e8d1)".
The datasource is an XMLListCollection. tracing the expression myDataGid.selectedItem I can see the studentID node and it has a value.
I see that starting with Flex 4.5, Adobe recommends that we use the spark.components.DataGrid class as an alternative to the mx:dataGrid which I am not at all familiar with or where to start to learn. I have this mx:dataGrid all setup and otherwise working and would prefer not to have to learn something new.
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Sep 2, 2010
I have a problem when creating a ViewStack, with a repeater along with other components (i.e. vBox) inside the ViewStack. The repeaters get placed at the bottom of the view. Despite the repeater is listed before other components, it is placed at the bottom.Is there a workaround where I can get the repeater drawn before the other components?Here is an example:
<mx:ViewStack id="viewStack" width="100%" height="100%" backgroundColor="#FFFFFF"
backgroundAlpha="1" paddingLeft="5" paddingRight="5" paddingBottom="5">
<mx:Repeater id="editorsRP" dataProvider="{dynamicFields}" [code].....
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Jan 11, 2012
I'm getting a Flash Builder warning message for multiple variable declarations of variable arr1 in the following AS3 [code]...
I could eliminate this warning with a few more if/else statements, but the code runs fine and I can't see why I should add complexity if the warning is acceptable. Would like to hear anyone else's opinion though if you think differently.
Assuming the warning is fine to live with, how to suppress the warning manually in Flash Builder? That is, only the warning for this example; other warnings must still be displayed.
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Sep 8, 2010
I'm fetching some data from a PHP application using Zend AMF. However I can't get the data to bind to a simple DropDownList control. The PHP method is:
[Code]...
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Nov 2, 2010
I have an XML object like this[code]...
but how to add the id attribute as the 'data' field of the dropdown so when an item is selected, it returns that field?
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May 4, 2011
I have a repeater component with custom event. My repeater components fires custom event holding data. My need is to dispatch event so other repeater components can access data from dispatching component.
Edit: Added whole stuff here.
<!-- AttributeMapping.mxml -->
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:fx="http://ns.adobe.com/mxml/2009"
[Code].....
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Jul 24, 2011
i would be glad if anyone can answer this.
i have an actionscript class as follows:
package
{
[code].....
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Jun 8, 2009
I want to insert a bezier spline into my Canvas by this code
<mx:Canvas
id="graphCanvas"
width="100%"
[code].....
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Jul 31, 2009
From a video on AdobeTV, I tried to play with example empWeb (LiveCycle Data Services).In Flex Builder 3 (FB3) everything works fine. When I tried this on Flash Builder 4.0 Beta (FB4) it doesn't work. When I replaced original xmlns declarations (2009, spark, halo)with declarations from FB3 (2006) it works. Could you explain why?I'm using the default SDKs (Flex 3.2 for FB3 and Flex 4.0 for FB4). I investigated this (please see 3 source code examples). Source #1 works OK in FB3 and FB4, Source #2 gives a FB4 compilation error message: [code]
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Apr 1, 2012
I have the following code:
<fx:Script>
<![CDATA[
import shared.GlobalsManager;
[code].....
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Mar 4, 2012
I am trying to assign a value from my database to a variable inside my Flex application. So far I read up a few ideas and I have at the moment the following code using a PHP web service:
protected function btnSubmitUser_clickHandler(event:MouseEvent):void
{
username = txtUsername.text;
[code].....
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Feb 12, 2011
I'm giving it a try and it happens that I'm having a hard time figuring out how to pass data between ViewNavigator in a TabbedMobileApplication.
<s:TabbedMobileApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">
<fx:Declarations>
[Code]....
How can I pass data between nav1 and nav2? I know how to do it in between navigation views.
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Mar 12, 2011
I'm using the data/services in Flash Builder 4 to access the php functions of a site within an Air based Crud, and figuring out the most efficient ways to work with the data objects that come back.
[Code]...
The data comes back as an associative array, which is fine if I want everything from it to be treated the same. But I'm not sure how I am supposed to pull a particular column from the array without having to go through a for loop to parse through it.. since right now the contact name would be at allContacts[i].name.
Basically I want to make a list of the names from the allContacts, so I want an array of allContacts[i].name to set as the data provider for a element. Is there any way to get that done without having to write a for loop to convert it into a new array or writing a new php function?
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Feb 22, 2012
I have a SplitViewNavigator with two split views. In one of the views I have a list and in another one I have questions. User must solve the question and when user click send button, he will see another question.
But when user click to send button in one view, how can i know this in the other view? I'm a newbie in Flash Builder and I'm searching for this for hours.
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May 20, 2010
i get this error when i retrieve an XML that only has 1 node (no repeating nodes) and i try to store in an ArrayCollection. -When I have MORE than 1 "name" nodes...i do NOT get an error. My test show that XMLListCollection does NOT work either.
TypeError: Error #1034: Type Coercion failed: cannot convert "XXXXXX" to mx.collections.ArrayCollection.
this error occurs as the line of code:
myList= e.result.list.name;
Why can't ArrayCollection work with a single node? I'm using this ArrayCollection as a dataprovider for a Component -is there an alternative I can use that will take BOTH single and repeating nodes as well as work as a dataprovider?
code:
[Bindable]
private var myList:ArrayCollection= new ArrayCollection();
private function getList(e:Event):void{
var getStudyLoungesService:HTTPService = new HTTPService();
[Code]....
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Jan 10, 2012
I've got a Gridcolumn in a Datagrid (Spark). The Column's dataprovider is a Number value that gets updated via Binding.Now, without an item renderer the cell displays the correct values.If I set an item renderer, I can't access the values in this renderer.My renderer looks like this, so nothing really do here (for now) but to trace the value, but the value is always NaN.
<?xml version="1.0" encoding="utf-8"?>
<s:GridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark" width="100%" height="100%" >[code].......
without the renderer, the column displays the correct values, so apparently the DefaultGridItemRenderer works fine.As requested, here is my Datagrid;
<s:DataGrid id="dataGrid" dataProvider="{_listItems}">
<s:columns>
<s:ArrayList>[code]..........
_listItems is an ArrayList with instances of a model class, which has (amongst others) a property called change of type Number.
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Dec 4, 2009
I have a DataGrid whose dataProvider is an Array of int Arrays (each with different lengths). Since each row has variable size (and I want to display all the data), I decided to extend DataGridColumn and overwrite the itemToLabel function to be able to display the data. The problem is that I also need to display the data differently depending on the int value.
I believe the only solution is to write an itemRenderer, but the only input the itemRenderer.set(data) function receives is the entire int Array. I believe I need either the exact string returned by itemToLabel or the column index of the cell the itemRenderer is for (to basically do the same parsing I implemented in itemToLabel).
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Apr 21, 2010
Does anyone know if there is a way to make the new Package Explorer window in Flash Builder emulate Flex Builders 'Flex navigator' window?
Bottom line is I don't always need to peer into SWC's, and I don't like having a 'default package' automatically created for me. Not sure why the interface wasn't made simpler, allowing access to more power and complexity only if necessary. I want to focus on the code, not on how to navigate and use the bells and whistles in the coding environment.
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Oct 6, 2009
I just upgraded to Flash Builder 4 (beta 2) from Flex Builder 3 which I have been using since it came out. Problem: All the projects that were in my workspace from Flex Builder 3 did not carry over into Flash Builder 4 (e.g. in the "Flex Navigator" view if FB3). Flash Builder 4 now uses the .FXP format to manage projects, but Flex Builder 3 did not. Is there an easy way to get all my projects back into Flash Builder 4?
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