whenever i insert an object to this datagrid it show this error
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at Forms::LessonPlan/addLesson_clickHandler()
this is my code
for inserting an object
var obj:Object = new Object();
var temp:Object = new Object();
obj.activityid = arrayNames.selectedItem.activityid;
[code]....
I am using flex with java.
I am fetching data from DB and put in object bean by setter and getter . and make list of beans.
this list i want to show in data grid in flex.
I'm currently working with the OLAPDataGrid component and got stuck at a relatively simple task: I want to style the last row of the grid differently from the rest, so my cell item renderer needs to know whether he's rendering the last row with content in the overall grid, including those rows currently not rendered because they are outside the visible grid space. AdvancedGridListData's rowIndex property only gets me the row index of the renderer relative to the range of visible grid rows, i.e. when I scroll down the grid, a data item with an index greater than 0 gets the rpw index = 0.
View 2 RepliesI'm trying to code the snap to grid functionality. The dragged object should snap to the grid if the distance between the object bounds and a grid line is less than 5px. I found a way to do it if the object's rotation is 0 but it doesn't work if I rotate the object. I need a different approach. Can you point me into the right direction with the algorythm or any source code?
View 3 RepliesI have to populate an Advanced Data Grid which have the following fields: Continent->State->Society-->Actual Value-->Estimate Value I want to simulate a financial market so i have to change some of the values by asynchronous request from an HTTPService; If necessary i'll post the .as file, but it is generated automatically by Flex Builder.
Here's the code of the client side Flex/Air application:
<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml"
layout="absolute"
[Code].....
I have a data grid who's data provider is set to an XML object.
Code:
<mx:DataGrid id="streamMonitorGrid" dataProvider="{_data.stream}" height="100%" width="100%">
[code].....
I am trying to drag and drop hierarchical data in the same advanced data grid, and I would like the data provider to updated when the ADG is updated. (I want to be able to save and load this tree, so it is important that drags and drops are saved.)
[URL]
The sample app has an ADG showing hierarchical data as well as flat data. The first column of each datagrid shows the rowindex of the underlying data.
If you rearrange the items on the left ADG, the row indexes become unordered. If you click traceTree you see that the data provider is not in order.
On the other hand if you do the same on the right, the row numbers stay ordered even when the objects move around and if you click traceFlat, the data provider is in the order shown on ADG
My goal is to have the data provider order match the ADG order for the left grid which is displaying hierarchical data.
need to load 10 records from database in advanced data grid. After i scroll the advanced data grid. it has to load 11 to 20 records etc.
View 1 RepliesI have a radio button group within a data grid, whenever I attempt to change the selected radio button the web page crashes. Below is how I put together the radio button in the data grid.
MXML
<mx:Accordion>
<fx:Declarations>
<s:RadioButtonGroup id="cover"/>
[Code]....
My data grid is displaying stale data, rather than the real time data available in it's data provider (array collection). I've tried refeshing the data in the collection, but that has no effect. Below is my code, does anyone see what could be the problem?
<mx:Accordion/>
<fx:Script>
<![CDATA[[code].....
I have paginated data grid having more than 5 pages (100 records/page) now i want to sort them all on just clicking on fields header
View 1 RepliesI want to display the same data in a chart and a data grid. I want to use the same data provider for both of them to reduce the amount of SQL queries.How do I transform the database structure into the chart structure and into the table structure using ActionScript?*
Database structure in JSON format:
[
{key:, year:, value:},
{key:, year:, value:}
]
Data provider structure required by a chart:
[
{series1:, series2:, year:},
{series1:, series2:, year:}
]
Data provider structure required by data grid:
[
{key:, year2000:, year2001:, ...},
{key:, year2000:, year2001:, ...}
]
Is it possible to have "Move-Up / Move-Down" buttons that can move a selected row in a dataGrid and move it to a different row in the database?
Where can I get more info or an example of this and what would this type of operation be called?
I am working on a grid example in flex using advanced grid control. I know we can easily group data by specifying the field name. At the group node level, other than the gorup name I want to be able to show data in the rest of the cells ( calculated data ) and I am looking for some dataRowBound event or similar to be able to hook some data in it.
Example: Grid displaying list of towns grouped by state. At the group level ( for each state) I want to show the total number of towns in each state. Here how can i show the total number in the town column.
How can you display a multi-line column header using the Flex Spark Data Grid for Flex 4.5?
View 5 RepliesI am working in Flex3. Here I have a datagrid which contains data. some columns are editable. when the user changes the column data web service is called. Here using function of focusOut, I am calling the web service by sending the data which comes from the datagrid through focusOut function. Now I want to call the web service when the user changes the column data and presses keyboard key 'Enter'. Here I can call function but the event does not carry datagrid's data to the function being called.
View 3 RepliesI want to render a very simple Flex data grid. How do I anchor the SWF flash file in the HTML? Do I need to compile a special .swf or can I use a 'standard' data grid .swf - and just pass the data to it?
View 1 Repliesany one send me the css file to have good look n feel for advance datagrid.
View 2 RepliesI am trying to create a dynamic datagrid in Flex 3, I have a list of columns a list of objects which correspond to datapoints for those columns which I fetch from a url. While the grid works perfectly fine the problem is that sorting on the columns is done in lexical order.[code]...
View 1 RepliesHow to make a computed column in Flex datagrid? example:
<mx:DataGrid dataProvider="{ConsoleDetails}" id="datagrid">
<mx:columns>
<mx:DataGridColumn headerText="Absent Hrs" dataField="absentHrs"/>
[code].....
when we use an advanced data grid, only when we click on the parent element the children details get populated in the corresponding columns, right?..SO now i have made the empty columns invisible(at design) now how do i make them visible at run time when the parent element is expanded..similarly once the columns are visible, how can i make them invisible again when the parent element is closed.
View 1 RepliesHow to get value of selected column form Advanced datagrid whose visble propery is false .
View 1 RepliesI need to select rows using key board up and down arrow buttons in the flex data grid.
View 1 RepliesI'm attempting to add an image to a datagrid item render dynamically in flex. Here is my DataGrid code The value of "str" in the getImagePath function is correct.
[Code]....
I am building an application in Flex Builder 3. Yes, I know that it has an auto-magic feature to build datasheet, but that will not work. I see many Flex controls, such as combo box, can take an array as a data source.
My question, therefore, is (1) How do I send the request from my action script to my PHP form to request a record set. (2) Presuming that my dataset is in a PHP assoc array, how do I format it to send it back to Action Script. (3) How do I take the data received from the recordset, and put it inot an actionscript array, suitable for use as a data source.
I can connect to my database in PHP, and query it just fine, so I don't need help with that. For consistency, and humor, lets presume that I have the following data in an assoc array that I pulled from a database.
[Code]...
I have data grid that measures the height according to the rows it has, but i need to disappear/ make invisible when i have no data, so the header will not just appear alone.
View 1 RepliesOn GridItem object there's a colIndex and on GridRow a rowIndex. But both are declared internal so I do not have acces on that information.
Is there another way to get the position of an object in a grid.
I am trying to implement the following :
1> First column of datagrid has a checkbox.
2> Select checkboxes, and then delete the datagrid column.
3> Dynamically, add checkbox when row is added dynamically.
4> Do not show check box if now data in row.
I have a flex data grid. It contains two column Maths Mark and English Mark. If Math Mark >English Mark for any row then it will set that particular row color as Green.
View 1 RepliesI have a flex data grid.I need to highlight the selected cell of the data grid.
View 3 Replies