flex要高亮数据一般可以使用选中效果或者设置背景,选中效果只能是高亮一条,多条高亮只能设置背景来达到效果。但是原生的DataGrid根本无法达到所要的效果,目前一般就是来改写原生的DataGrid,只需重新写一个类来重写drawRowBackground方法就可以了,代码如下
复制代码 代码如下:
package org.lxh  
{     
    import flash.display.Sprite;  
    import mx.controls.DataGrid;  
    public class SpecialDataGrid extends DataGrid  
    {  
        private var _rowColorFunction:Function;   //用于在外部能通过指定一个方法 去实现改变列的背景色  
        public function SpecialDataGrid()  
        {  
            super();  
        }  
        public function set rowColorFunction(f:Function):void  
        {  
            this._rowColorFunction = f;  
        }  
        public function get rowColorFunction():Function  
        {  
            return this._rowColorFunction;  
        }  
        //复写该方法  
        override protected function drawRowBackground(s:Sprite,rowIndex:int,y:Number, height:Number, color:uint, dataIndex:int):void  
        {  
            if( this.rowColorFunction != null ){  
                if( dataIndex < this.dataProvider.length ){  
                    var item:Object = this.dataProvider.getItemAt(dataIndex);  
                    color = this.rowColorFunction.call(this, item, color);  
                }  
            }             
            super.drawRowBackground(s, rowIndex, y, height, color, dataIndex);  
        }  
    }  
} 
用的时候先引入名称空间 xmlns:control="org.lxh.*",把原来的DataGrid改成下面这样 
复制代码 代码如下:
<control:SpecialDataGrid   alternatingItemColors="[0xe3eaf2,0xe8f1f8]" dataProvider="{strArray}" rowColorFunction="colorFunction" doubleClick="planDataGrid_doubleClickHandler(event)" doubleClickEnabled="true">  
                        <control:columns>  
                            <mx:DataGridColumn dataField="选择" sortable="false" resizable="false"  showDataTips="true">  
                                <mx:itemRenderer>  
                                    <fx:Component>  
                                        <mx:CheckBox change="outerDocument.checkChangeHandlerForPlan(event)"/>  
                                    </fx:Component>  
                                </mx:itemRenderer>  
                            </mx:DataGridColumn>  
                        <mx:DataGridColumn dataField="id" headerText="主键" visible="false"/>  
                        </control:columns>  
                    </control:SpecialDataGrid> 
rowColorFunction属性用来设置高亮的效果,例如那一列需要高亮,对应的function如下
复制代码 代码如下: