[AS3编程教学]Flash组件之单选按钮CheckBox使用

1、首先我们新建一个空白文档，在文档上方写上“年龄选择”几个字，如图所示：

3、新建一个文档类TextCheckBox.as，我们输入以下代码，旨在先动态创建我们需要数量的单选组件在舞台上。package{i罪焐芡拂mport flash.display.Sprite;import fl.controls.CheckBox;/*** CheckBox组件测试使用* @author Tiger* 2012/3/16 15:05*/public class TextCheckBox extends Sprite{private var ageList:Array = ["小于18岁", "18岁至28岁", "29岁至39岁", "40岁至50岁","50岁至60岁", "60岁以上"];private var checkList:Array = [];public function TextCheckBox(){createCheckList();}private function createCheckList():void{var len:int = ageList.length;for (var i:int = 0; i < len; i++){var mCB:CheckBox = new CheckBox ();mCB.label = ageList[i];mCB.x = 210mCB.y = 80 + i * (mCB.height + 10);this.addChild(mCB);checkList[i] = mCB;}}}}

5、一个人的年龄只可能满足上面的某一个条件，不可能同时满足，所以说我们要给这些组件添加选中事件处理，选中某一个时，同时取消别的被选项目，继续晚上创建函数如下：private function createCheckList():void{var len:int = ageList.length;for (var i:int = 0; i < len; i++){var mCB:CheckBox = new CheckBox ();mCB.label = ageList[i];mCB.x = 210mCB.y = 80 + i * (mCB.height + 10);mCB.addEventListener(Event.CHANGE, selectCBHandler);this.addChild(mCB);checkList[i] = mCB;}}private function selectCBHandler(e:Event):void{var mCB:CheckBox = e.target as CheckBox;var len:int = checkList.length;for (var i:int = 0; i < len; i++){if (checkList[i] == mCB) continue;checkList[i].selected = false;}}

7、现在的问题是，我们单选了某个年龄，但是没有任何地方显示出来单选的内容提示，同时单选按钮鼠标移上去没有鼠标手出现，而且单选按钮的文字太小，看不大清除...所以我们继续把代码完善到如下所示：//创建单选按钮private function createCheckList():void{var len:int = ageList.length;for (var i:int = 0; i < len; i++){var mCB:CheckBox = new CheckBox ();mCB.label = ageList[i];mCB.x = 210mCB.y = 80 + i * (mCB.height + 10);mCB.setSize(120, 25);mCB.useHandCursor = true;mCB.addEventListener(Event.CHANGE, selectCBHandler);setFormat(mCB);this.addChild(mCB);checkList[i] = mCB;}}//设置外观private function initParms():void{mForMat = new TextFormat();mForMat.align = TextFieldAutoSize.CENTER;mForMat.font = "微软雅黑";mForMat.size = 14;txtInfo = new TextField();txtInfo.x = 150;txtInfo.y = 300;txtInfo.autoSize = TextFieldAutoSize.LEFT;this.addChild(txtInfo);}private function setFormat(cb:CheckBox):void{cb.setStyle("textFormat", mForMat);}//处理点击事件private function selectCBHandler(e:Event):void{var mCB:CheckBox = e.target as CheckBox;var len:int = checkList.length;for (var i:int = 0; i < len; i++){if (checkList[i] == mCB) continue;checkList[i].selected = false;}txtInfo.text = "我的年龄：" + mCB.label;}