FlexData 行 上移 下移动，置顶，置底
private function orderDataGrid(evt:FilterOrderEvent):void{ var selectedObj:Object = dg.selectedItem; var selectIndex:int = dg.selectedIndex; var tempObj:Object; var dgData:ArrayCollection = ArrayCollection(dg.dataProvider); if(evt.movePosition == FilterOrderEvent.FILTER_MOVE_UP && selectIndex > 0) {//上移selectedObj.ORDER = String(selectIndex);dgData.getItemAt(selectIndex - 1).ORDER = String(selectIndex+1);dgData.addItemAt(selectedObj,selectIndex - 1);dgData.removeItemAt(selectIndex + 1);dg.selectedIndex = selectIndex;}else if(evt.movePosition == FilterOrderEvent.FILTER_MOVE_DOWN && selectIndex < dgData.length -1){//下移selectedObj.ORDER = String(selectIndex+2);dgData.getItemAt(selectIndex + 1).ORDER = String(selectIndex+1);dgData.addItemAt(selectedObj,selectIndex + 2); dgData.removeItemAt(selectIndex);dg.selectedIndex = selectIndex; }else if(evt.movePosition == FilterOrderEvent.FILTER_MOVE_TOP && selectIndex > 0){//置顶for(var i:int = 0; i <= selectIndex; i++){tempObj = dgData.getItemAt(i);tempObj.ORDER = String(i+2);}selectedObj.ORDER = "1"dgData.addItemAt(selectedObj,0);dgData.removeItemAt(selectIndex + 1);dg.scrollToIndex(0);dg.selectedIndex = 0;}else if(evt.movePosition == FilterOrderEvent.FILTER_MOVE_BUTTOM && selectIndex < (dgData.length - 1)){//置底for(var j:int = selectIndex; j < dgData.length; j++){tempObj = dgData.getItemAt(j);tempObj.ORDER = String(j);}selectedObj.ORDER = String(dgData.length);dgData.addItemAt(selectedObj,dgData.length); dgData.removeItemAt(selectIndex); dg.scrollToIndex(dgData.length-1);dg.selectedIndex = dgData.length-1; }}