在FLEX4中创建复杂数据源（一）

第一种方式： 

<mx:DataGrid id="dg" horizontalCenter="0" verticalCenter="0">
        <mx:columns>
            <mx:DataGridColumn dataField="firstName" />
            <mx:DataGridColumn dataField="lastName" />
            <mx:DataGridColumn dataField="address.town" />
            <mx:DataGridColumn dataField="address.state" />
            <mx:DataGridColumn dataField="address.zipCode" />
        </mx:columns>
        <mx:dataProvider>
            <mx:ArrayCollection>
                <fx:Object firstName="Carol" lastName="F.">
                    <fx:address>
                        <fx:Object town="Waltham" state="MA" zipCode="02452" />
                    </fx:address>
                </fx:Object>
                <fx:Object firstName="Darrell" lastName="L.">
                    <fx:address>
                        <fx:Object town="Waltham" state="MA" zipCode="02452" />
                    </fx:address>
                </fx:Object>
                <fx:Object firstName="Hans" lastName="M.">
                    <fx:address>
                        <fx:Object town="San Francisco" state="CA" zipCode="94103" />
                    </fx:address>
                </fx:Object>
                <fx:Object firstName="Kevin" lastName="L.">
                    <fx:address>
                        <fx:Object town="San Francisco" state="CA" zipCode="94103" />
                    </fx:address>
                </fx:Object>
            </mx:ArrayCollection>
        </mx:dataProvider>
    </mx:DataGrid>
第二种方式：

 <fx:Script>
        <![CDATA[
            import mx.collections.ArrayCollection;
            import mx.controls.DataGrid;
            import mx.controls.dataGridClasses.DataGridColumn;
 
            protected var dg:DataGrid;
 
            protected function init():void {
                var cols:Array = [];
                cols.push(new DataGridColumn("firstName"));
                cols.push(new DataGridColumn("lastName"));
                cols.push(new DataGridColumn("address.town"));
                cols.push(new DataGridColumn("address.state"));
                cols.push(new DataGridColumn("address.zipCode"));
 
                var arr:Array = [];
                arr.push({firstName:"Carol", lastName:"F.", address:{town:"Waltham", state:"MA", zipCode:"02452"}});
                arr.push({firstName:"Darrell", lastName:"L.", address:{town:"Waltham", state:"MA", zipCode:"02452"}});
                arr.push({firstName:"Hans", lastName:"M.", address:{town:"San Francisco", state:"CA", zipCode:"94103"}});
                arr.push({firstName:"Kevin", lastName:"L.", address:{town:"San Francisco", state:"CA", zipCode:"94103"}});
 
                dg = new DataGrid();
                dg.columns = cols;
                dg.dataProvider = new ArrayCollection(arr);;
                dg.horizontalCenter = dg.verticalCenter = 0;
                addElement(dg);
            }
        ]]>
    </fx:Script>