Actionscript 3 单击按钮时如何删除组合框组件flash as3
我在flash cs5中的组合框有问题。 我按照这里的指南创建了一个组合框 我的AS3代码如下:Actionscript 3 单击按钮时如何删除组合框组件flash as3,actionscript-3,flash,combobox,flash-cs5,Actionscript 3,Flash,Combobox,Flash Cs5,我在flash cs5中的组合框有问题。 我按照这里的指南创建了一个组合框 我的AS3代码如下: import fl.controls.ComboBox; import fl.data.DataProvider; import flash.net.navigateToURL; var sfUniversities:Array = new Array( {label:"University of California, Berkeley", d
import fl.controls.ComboBox;
import fl.data.DataProvider;
import flash.net.navigateToURL;
var sfUniversities:Array = new Array(
{label:"University of California, Berkeley",
data:"http://www.berkeley.edu/"},
{label:"University of San Francisco",
data:"http://www.usfca.edu/"},
{label:"San Francisco State University",
data:"http://www.sfsu.edu/"},
{label:"California State University, East Bay",
data:"http://www.csuhayward.edu/"},
{label:"Stanford University", data:"http://www.stanford.edu/"},
{label:"University of Santa Clara", data:"http://www.scu.edu/"},
{label:"San Jose State University", data:"http://www.sjsu.edu/"}
);
var aCb:ComboBox = new ComboBox();
aCb.dropdownWidth = 210;
aCb.width = 200;
aCb.move(150, 50);
aCb.prompt = "San Francisco Area Universities";
aCb.dataProvider = new DataProvider(sfUniversities);
aCb.addEventListener(Event.CHANGE, changeHandler);
addChild(aCb);
function changeHandler(event:Event):void {
var request:URLRequest = new URLRequest();
request.url = ComboBox(event.target).selectedItem.data;
navigateToURL(request);
aCb.selectedIndex = -1;
}
我还有一个简单的后退按钮,它与组合框位于同一帧上,单击该按钮时,会将您带到上一帧
我的按钮:
btnBack.addEventListener(MouseEvent.CLICK, clickBack);
function clickBack(event:MouseEvent):void
{
gotoAndStop(333);
}
问题是,当单击按钮时,组合框会停留在屏幕上。我希望组合框仅在单个帧中可见
单击按钮后,如何摆脱组合框
感谢您的帮助:)在这种情况下,请使用:
removeChild(aCb);
如果希望垃圾收集器清理事件侦听器(或使用弱事件侦听器),请记住删除事件侦听器