Flex - LinkButton 控件

介绍

LinkButton 控件是一个无边框的 Button 控件，当用户将鼠标悬停在其上时，其内容会高亮显示。您必须为 LinkButton 控件指定一个点击事件处理程序才能执行类似于按钮的操作。

类声明

以下是mx.controls.LinkButton类的声明：

public class LinkButton 
   extends Button

公共方法

继承的方法

此类继承自以下类的方法：

• 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，通过创建一个测试应用程序来检查 LinkButton 控件在 Flex 应用程序中的用法：

以下是修改后的 mxml 文件src/com.tutorialspoint/HelloWorld.mxml的内容：

<?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/tutorialspoint/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>

完成所有更改后，让我们像在Flex - 创建应用章节中所做的那样，以普通模式编译并运行应用程序。如果您的应用程序一切正常，这将产生以下结果：[ 在线试用 ]