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我有几个datagrids（从某些地图服务中检索数据）。Flex Datagrid + Tab导航器
我想将这些数据网格放置在标签导航器的单独选项卡中。所有的工作都很好，除了第一个标签总是没有任何数据网格。
我已经尝试过创建策略=“全部”和东西，但第一个标签总是空的。有没有人有任何想法，为什么第一个标签总是空的。
任何解决方法。
感谢
var box:HBox=new HBox();
var dg:DataGrid = new DataGrid();
dg.dataProvider = newAC;
box.label=title.text;
box.addChild(dg);
tabNaviId.addChild(box);
tabNaviId.selectedIndex=2;
resultsArea.addChild(tabNaviId);
DG是填充了数据网格。上面的代码是在一个循环中，在每个循环中我创建一个Hbox +数据网格。然后我将Hbox添加到导航器中，最后将导航器添加到resultsArea（这是一个画布）。
上面的代码与第一次相比效果很好。
我得到的最终结果是，有一个没有任何数据网格的第一个选项卡的选项卡导航器，但其余选项卡都有数据网格。任何想法，为什么发生这种情况。
呼叫到一个名为createDatagrid功能是由：
dgCollection.addItem(parentApplication.resultsPanel.createDatagrid(token.name.toString() + " (" + recAC.length + " selected)", recAC, false, callsToMake));
在另一个MXML组件此功能存在
public function createDatagrid(titleText:String, recACAll:ArrayCollection, showContent:Boolean, callsToMake:Number):DataGrid
{
var dg:DataGrid = new DataGrid();
var newAC:ArrayCollection = new ArrayCollection();
var newDGCols:Array = new Array();
for(var i:Number = 0; i < recACAll.length; i ++)
{
var contentStr:String = recACAll[i][CONTENT_FIELD];
var featureGeo:Geometry = recACAll[i][GEOMETRY_FIELD];
var iconPath:String = recACAll[i][ICON_FIELD];
var linkStr:String = recACAll[i][LINK_FIELD];
var linkNameStr:String = recACAll[i][LINK_NAME_FIELD];
var featurePoint:MapPoint = recACAll[i][POINT_FIELD];
var titleStr:String = recACAll[i][TITLE_FIELD];
if(contentStr.length > 0)
{
var rows:Array = contentStr.split("\n");
var tmpObj:Object = new Object();
if(!showContent)
{
for(var j:Number = 0; j < rows.length; j++)
{
var tmpStr:String = rows[j] as String;
var header:String = tmpStr.substring(0,tmpStr.indexOf(":"));
var val:String = tmpStr.substring(tmpStr.indexOf(":") + 2);
if(header.length > 0)
{
tmpObj[header] = val;
if(newDGCols.length < rows.length - 1)
{
newDGCols.push(new DataGridColumn(header));
}
}
}
}
else
{
if(newDGCols.length == 0)
{
newDGCols.push(new DataGridColumn(CONTENT_FIELD));
newDGCols.push(new DataGridColumn(GEOMETRY_FIELD));
newDGCols.push(new DataGridColumn(ICON_FIELD));
newDGCols.push(new DataGridColumn(LINK_FIELD));
newDGCols.push(new DataGridColumn(LINK_NAME_FIELD));
newDGCols.push(new DataGridColumn(POINT_FIELD));
newDGCols.push(new DataGridColumn(TITLE_FIELD));
}
}
tmpObj[CONTENT_FIELD] = contentStr;
tmpObj[GEOMETRY_FIELD] = featureGeo;
tmpObj[ICON_FIELD] = iconPath;
tmpObj[LINK_FIELD] = linkStr;
tmpObj[LINK_NAME_FIELD] = linkNameStr;
tmpObj[POINT_FIELD] = featurePoint;
tmpObj[TITLE_FIELD] = titleStr;
newAC.addItem(tmpObj);
}
if(showHidePic.source == minSourceI)
{
showHidePic.source = minSource;
}
else if(showHidePic.source == maxSourceI)
{
showHidePic.source = maxSource;
}
curResults = curResults + recACAll.length;
if (curResults == 1)
{
showInfoWindow(tmpObj);
if(showContent)
{
parentApplication.maps.map.extent = featureGeo.extent;
}
}
else
{
showInfoWindow(null);
// Added to avoid the overview button problem (needs checking)
this.removeEventListener(MouseEvent.MOUSE_OVER, handleMouseOver, false);
this.removeEventListener(MouseEvent.MOUSE_MOVE,handleMouseOver,false);
this.removeEventListener(MouseEvent.MOUSE_OUT,handleMouseOut,false);
this.removeEventListener(MouseEvent.MOUSE_DOWN,handleMouseDrag,false);
this.removeEventListener(MouseEvent.MOUSE_UP,handleMouseDragStop,false);
this.parent.removeEventListener(MouseEvent.MOUSE_MOVE,handleParentMove,false);
this.parent.removeEventListener(MouseEvent.MOUSE_UP,handleMouseDragStop2,false);
maximizePanel();
}
}
dg.dataProvider = newAC;
dg.columns = newDGCols;
dg.rowCount = newAC.length;
var totalDGCWidth:Number = 0;
for(var m:Number = 0; m < dg.columns.length; m++)
{
var dgc2:DataGridColumn = dg.columns[m];
/*if(dgc2.headerText.toUpperCase()==LINK_FIELD.toUpperCase()){
//dgc.itemRenderer=new ClassFactory(CustomRenderer);
dgc2.itemRenderer=new ClassFactory(CustomRenderer);
}*/
var dgcWidth2:Number = dgc2.headerText.length * CHAR_LENGTH;
for(var l:Number = 0; l < newAC.length; l++)
{
var row2:Object = newAC.getItemAt(l) as Object;
var rowVal2:String = row2[dgc2.headerText];
if(rowVal2 != null)
{
var tmpLength2:Number = rowVal2.length * CHAR_LENGTH;
if(tmpLength2 < CHAR_MAX_LENGTH)
{
if(tmpLength2 > dgcWidth2)
{
dgcWidth2 = tmpLength2;
}
}
else
{
dgcWidth2 = CHAR_MAX_LENGTH
break;
}
}
}
// Added by FT:to change the item renderer for link field
if(dgc2.headerText == GEOMETRY_FIELD || dgc2.headerText == CONTENT_FIELD ||
dgc2.headerText == ICON_FIELD || dgc2.headerText == LINK_FIELD ||
dgc2.headerText == POINT_FIELD || dgc2.headerText == TITLE_FIELD ||
dgc2.headerText == LINK_NAME_FIELD)
{
if(dgc2.headerText == CONTENT_FIELD && showContent)
{
//something
}
else
{
dgcWidth2 = 0;
}
}
totalDGCWidth += dgcWidth2;
}
dg.width = totalDGCWidth;
for(var k:Number = 0; k < dg.columns.length; k++)
{
var dgc:DataGridColumn = dg.columns[k];
var dgcWidth:Number = dgc.headerText.length * CHAR_LENGTH;
for(var n:Number = 0; n < newAC.length; n++)
{
var row:Object = newAC.getItemAt(n) as Object;
var rowVal:String = row[dgc.headerText];
if(rowVal != null)
{
var tmpLength:Number = rowVal.length * CHAR_LENGTH;
if(tmpLength < CHAR_MAX_LENGTH)
{
if(tmpLength > dgcWidth)
{
dgcWidth = tmpLength;
}
}
else
{
dgcWidth = CHAR_MAX_LENGTH
break;
}
}
}
if(dgc.headerText == GEOMETRY_FIELD || dgc.headerText == CONTENT_FIELD ||
dgc.headerText == ICON_FIELD || dgc.headerText == LINK_FIELD ||
dgc.headerText == POINT_FIELD || dgc.headerText == TITLE_FIELD ||
dgc.headerText == LINK_NAME_FIELD)
{
if(dgc.headerText == CONTENT_FIELD && showContent)
{
dgc.visible = true;
}
else
{
dgc.visible = false;
dgcWidth = 0;
}
}
if(dgc.headerText == LINK_COL_NAME)
{
dgcWidth = LINK_COL_WIDTH;
}
dgc.width = dgcWidth;
}
dg.addEventListener(ListEvent.ITEM_CLICK,rowClicked);
dg.addEventListener(ListEvent.ITEM_ROLL_OVER,mouseOverRow);
dg.addEventListener(ListEvent.ITEM_ROLL_OUT,mouseOutRow);
var title:Text = new Text();
title.text = titleText;
title.setStyle("fontWeight","bold");
//resultsArea.addChild(title);
return dg;
//tabNaviId.selectedIndex=2;
}
public function populateGrid(dgCollection:ArrayCollection):void{
for(var k:Number = 0; k < dgCollection.length; k++)
{
var box:HBox=new HBox();
var dg2:DataGrid=dgCollection.getItemAt(k) as DataGrid;
box.label="some";
box.addChild(dg2);
tabNaviId.addChild(box);
}
resultsArea.addChild(tabNaviId);
}
和标签导航声明
<mx:Image id="showHidePic" click="toggleResults()"/>
<mx:VBox y="20" styleName="ResultsArea" width="100%" height="100%">
<mx:HBox>
<mx:Button label="Export to Excel" click="downloadExcel()"/>
<mx:Button label="Clear" click="clear()" />
</mx:HBox>
<mx:VBox id="resultsArea" styleName="ResultsContent" paddingTop="10" paddingLeft="10" paddingRight="10" verticalScrollPolicy="off" horizontalScrollPolicy="off">
<mx:TabNavigator id="tabNaviId" width="622" height="274" creationPolicy="all">
</mx:TabNavigator>
</mx:VBox>
</mx:VBox>
发布源代码会很有用！没有它，我们将很难帮助你。 – sean 2011-03-28 18:01:25
同意，请提供代码，并且不要使用creationPolicy =“all” – 2011-03-28 18:09:07
谢谢你们，请看原始帖子的代码。 – Abstract 2011-03-28 18:16:47