LinkButton

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2023-12-01

介绍 (Introduction)

LinkButton控件是一个无边框Button控件，当用户将鼠标悬停在其上时，其内容会突出显示。您必须为LinkButton控件指定单击事件处理程序，以执行类似于按钮的某些操作。

Class 声明 (Class Declaration)

以下是mx.controls.LinkButton类的声明 -

public class LinkButton 
   extends Button

公共方法 (Public Methods)

S.No	方法和描述
1	LinkButton() 构造函数。

方法继承 (Methods Inherited)

该类继承以下类中的方法 -

mx.controls.Button
mx.core.UIComponent
mx.core.FlexSprite
flash.display.Sprite
flash.display.DisplayObjectContainer
flash.display.InteractiveObject
flash.display.DisplayObject
flash.events.EventDispatcher
Object

Flex LinkButton控件示例

让我们按照以下步骤通过创建测试应用程序来检查Flex应用程序中LinkButton控件的用法 -

步	描述
1	在cn.xnip.client包下创建一个名为HelloWorld的项目，如Flex - Create Application一章中所述。
2	修改HelloWorld.mxml ，如下所述。保持其余文件不变。
3	编译并运行应用程序以确保业务逻辑按照要求运行。

以下是修改后的mxml文件src/cn.xnip/HelloWorld.mxml

<?xml version = "1.0" encoding = "utf-8"?>
<s:Application xmlns:fx = "http://ns.adobe.com/mxml/2009"
   xmlns:s = "library://ns.adobe.com/flex/spark"
   xmlns:mx = "library://ns.adobe.com/flex/mx"
   width = "100%" height = "100%" minWidth = "500" minHeight = "500">	
   <fx:Style source = "/com/xnip/client/Style.css" />
   <fx:Script>
      <![CDATA[
         import mx.controls.Alert;
         protected function clickMe_clickHandler(event:MouseEvent):void {
            var linkButton:LinkButton =  event.target as LinkButton;
            Alert.show("LinkButton "+linkButton.id+" Clicked");
         }
      ]]>
   </fx:Script>
   <s:BorderContainer width = "550" height = "500" id = "mainContainer" 
      styleName = "container">
      <s:VGroup width = "100%" height = "100%" gap = "50" horizontalAlign = "center"
         verticalAlign = "middle">
         <s:Label id = "lblHeader" text = "Basic Controls Demonstration" 
            fontSize = "40" color = "0x777777" styleName = "heading" />
         <s:Panel title = "Using LinkButton" width = "420" height = "100" >
            <s:layout>
               <s:HorizontalLayout paddingTop = "10" paddingLeft = "10" />
            </s:layout>					
            <mx:LinkButton label = "Link 1" id = "clickMe"
               click = "clickMe_clickHandler(event)" />
            <mx:LinkButton label = "Link 2" id = "clickMe1" 
               click = "clickMe_clickHandler(event)" />
            <mx:LinkButton label = "Link 3" id = "clickMe2" 
               click = "clickMe_clickHandler(event)" />
         </s:Panel>			      
      </s:VGroup>	 
   </s:BorderContainer>	
</s:Application>

一旦准备好完成所有更改，让我们像在Flex - Create Application章节中那样在正常模式下编译和运行应用程序。