我有几个datagrids（从某些地图服务中检索数据）。
我想将这些数据网格放在标签导航器的单独标签中。除了第一个选项卡之外，所有工作都很好，它总是在没有任何数据网格的情况下结束。
我尝试过创建策略=“全部”和东西，但第一个标签始终为空。有没有人想知道为什么第一个标签总是空的。
任何解决方法。
由于
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是正在填充的数据网格。上面的代码是循环的，在每个循环中我创建了一个Hbox + datagrid。然后我将Hbox添加到导航器并最终将导航器添加到resultsArea（这是一个画布）。
上述代码与第一次相比效果很好。
我得到的最终结果是，有一个标签导航器，第一个标签没有任何数据网格，但其余标签都有数据网格。关于为什么会发生这种情况的任何想法。
调用一个名为createDatagrid的函数：
dgCollection.addItem(parentApplication.resultsPanel.createDatagrid( token.name.toString() + " (" + recAC.length + " selected)", recAC, false, callsToMake ));
在另一个Mxml组件中，此函数存在
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);
}
并将标签导航器声明为
<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>
答案 0 :(得分：0)
摘要，我们可以获得包含您提到的循环的完整代码，以及创建TabNavigator的代码吗？
TabNavigator可能已经有一个初始子项，之后会添加您正在创建的所有子项。