Flex DataGrid not Displaying Data
- by asawilliams
I have a custom dataGrid that acts more like a 2D list (if that makes sense at all). I am dynamically creating the columns and recreating the dataProvider to suit my needs. While debugging I can see that I am creating the columns and setting them to the dataGrid and creating and setting the dataProvider, but for some reason I am able to see the dataGrid and the columns but not the data.
[Bindable]
private var mockData:ArrayCollection = new ArrayCollection([
{value: "425341*"},
{value: "425341*"},
{value: "425341*"},
{value: "425341*"},
{value: "425341*"},
{value: "425341*"},
{value: "425341*"},
{value: "425341*"},
{value: "425341*"}]);
...
<TwoDimensionalList
width="100%" height="100%"
numColumns="7" numRows="7"
dataField="value"
dataProvider="{mockData}"/>
The snippet of code from the object only contains the important functions, everything else is not important (getters, setters, etc ...).
While debugging I checked all the variables in the functions to make sure they were assigned and a value that I was expecting.
[Snippet]
public class TwoDimensionalList extends DataGrid
{
...
/**
* Creates and sets properties of columns
*/
private function createColumns():void
{
var column:DataGridColumn;
var cols:Array = this.columns;
for(var i:uint=0; i < numColumns; i++)
{
column = new DataGridColumn("column"+i.toString());
column.dataField = "column"+i.toString();
cols[i]=column;
}
this.columns = cols;
// go to the current
gotoPage(this._currentPageNum);
}
/**
* Sets the data for the dataprovider based on the
* number of columns, rows, and page number.
*
* @param pageNum the page number of the data to be viewed in the DataGrids.
*/
private function gotoPage(pageNum:uint):void
{
_currentPageNum = pageNum;
var startIndex:uint = (pageNum-1)*numColumns*numRows;
var data:ArrayCollection = new ArrayCollection();
for(var i:uint=0; i < numRows; i++)
{
var obj:Object = new Object();
for(var j:uint=0; j < numColumns; j++)
{
if((i+(j*numRows)+startIndex) < _dataProvider.length)
obj["column"+j.toString()] = String(_dataProvider.getItemAt(i+(j*numRows)+startIndex)["value"]);
}
data.addItem(obj);
}
this.dataProvider = data;
}
}
