FLEX4 List代码触发选择

在Flex4中需要触发list的选择事件，代码如下:

<s:List id="groupContainer" width="160" height="100%" itemRenderer="components.group.GroupItemRenderer" dataProvider="{Managers.getGroupManager().groups}" change="groupItemChange(event)" alpha="0.9" ></s:List>private function initUI():void {groupContainer.selectedIndex = 0;var event:IndexChangeEvent = new IndexChangeEvent(IndexChangeEvent.CHANGE, false, false, -1, 0);groupContainer.dispatchEvent(event);//Managers.getPacketManager().addListener(onGroupCallResponse, new PacketFilterType(PacketType.GROUP_CALL));}

对象groupContainer为组列表，initUI（）函数为界面加载完成后触发的函数。