在企業級應用開發中AdvancedDataGrid 和DataGrid 使用的非常廣。當然最基本的也是最常用的就是數據的直接綁定，固定列頭和固定數據的列數。而這往往不能滿足需求，企業應用的開發常常是以數據爲中心，數據會經常變化比如增加了列頭，刪除某列的數據，羣組子類的新增等等。這裏就要根據後臺數據完全的自動化生成了，也就是完全使用ActionScript來寫,其實也很簡單，flex的每段mxml標記都對應了相同的AS類，只是在某些細節上的實現有些不同.下面簡單的例子供大家參考，相信能解決開發中的大部分問題。
[Bindable]
public var dgSource:ArrayCollection = new ArrayCollection();
private var adDG:AdvancedDataGrid = new AdvancedDataGrid();
[Bindable]
public var newSource:ArrayCollection = new ArrayCollection();
protected function httpservice1_resultHandler(event:ResultEvent):void
{
dgSource = event.result.root.Item;
//遍歷數據源
var ss:int = 0;
while(ss < ((dgSource.getItemAt(0).value.string) as ArrayCollection).length)
{
var newObj:Object=new Object();
for(var s:int=0;s<dgSource.length;s++)
{
newObj[dgSource.getItemAt(s).duName] = dgSource.getItemAt(s).value.string[ss];
}
ss ++;
newSource.addItem(newObj);
}
adDG.dataProvider = newSource;
adDG.groupedColumns = getColumnGroupNames(dgSource);
adDG.sortableColumns = false;
adDG.sortExpertMode = false;
adDG.showInAutomationHierarchy = false;
adDG.height = 400;
adDG.percentWidth = 100;
adDG.horizontalScrollPolicy = ScrollPolicy.AUTO;
this.addElement(adDG);
}
//根據數據源格式生成相應的Column和ColumnGroup
private function getColumnGroupNames(columnsSource:ArrayCollection):Array
{
var columnGrouNames:Array=new Array();
if (columnsSource && columnsSource.length > 0)
{
for (var i:int=0; i < columnsSource.length; i++)
{
var obj:Object=columnsSource.getItemAt(i);
var column:AdvancedDataGridColumn=new AdvancedDataGridColumn();
column.headerText=obj.duName;
column.dataField=obj.duName;
column.width = 130;
if (obj.hasOwnProperty("duOwner"))
{
//檢測當前是否存在羣組
var column_index:int=judgeGroupNameIfExist(columnGrouNames, obj.duOwner);
//判斷當前羣組是否存在
//如果存在則添加子列
if (column_index > -1)
{
columnGrouNames[column_index].children.push(column)
}
else
{
var groupName:AdvancedDataGridColumnGroup=new AdvancedDataGridColumnGroup();
groupName.headerText=obj.duOwner;
groupName.children=[column];
columnGrouNames.push(groupName);
}
}
else //如果當前列不是羣組列則直接添加
{
columnGrouNames.push(column);
}
}
}
return columnGrouNames;
}
//判斷羣組是否存在
//不存在則添加
//存在則返回當前下標
private function judgeGroupNameIfExist(groupSource:Array, name:String):int
{
for (var i:int=0; i < groupSource.length; i++)
{
if (groupSource[i].headerText == name)
{
return i;
}
}
return -1;
}
xml數據源
<?xml version="1.0" encoding="utf-8"?>
<root>
<Item>
<duName>Name</duName>
<value>
<string>Name 1</string>
<string>Name 2</string>
<string>Name 3</string>
<string>Name 4</string>
<string>Name 5</string>
</value>
</Item>
<Item>
<duName>Owner</duName>
<value>
<string>HR 1</string>
<string>HR 2</string>
<string>HR 3</string>
<string>HR 4</string>
<string>HR 5</string>
</value>
</Item>
<Item>
<duName>Type</duName>
<value>
<string>Labor 1</string>
<string>Labor 2</string>
<string>Labor 3</string>
<string>Labor 4</string>
<string>Labor 5</string>
</value>
</Item>
<Item>
<duName>Department One</duName>
<duOwner>Zhang San</duOwner>
<value>
<string>13.0000</string>
<string>14.0000</string>
<string>15.0000</string>
<string>16.0000</string>
<string>17.0000</string>
</value>
</Item>
<Item>
<duName>Department Two</duName>
<duOwner>Li Shi</duOwner>
<value>
<string>4.0000</string>
<string>5.0000</string>
<string>6.0000</string>
<string>7.0000</string>
<string>8.0000</string>
</value>
</Item>
<Item>
<duName>Department Three</duName>
<duOwner>Wang Wu</duOwner>
<value>
<string>9.0000</string>
<string>10.0000</string>
<string>11.0000</string>
<string>12.0000</string>
<string>13.0000</string>
</value>
</Item>
<Item>
<duName>Department Four</duName>
<duOwner>Zhang San</duOwner>
<value>
<string>5.0000</string>
<string>6.0000</string>
<string>7.0000</string>
<string>8.0000</string>
<string>9.0000</string>
</value>
</Item>
<Item>
<duName>Department Five</duName>
<duOwner>Wang Wu</duOwner>
<value>
<string>11.0000</string>
<string>12.0000</string>
<string>13.0000</string>
<string>14.0000</string>
<string>15.0000</string>
</value>
</Item>
</root>
